Journal articles: 'Heat resistant material'

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Tukhareli, V. D., E. E. Gnedash, and A. V. Tukhareli. "Heat-Resistant Composite Materials Based on Secondary Material Resources." Solid State Phenomena 299 (January 2020): 287–92. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.287.

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Heat-resistant properties of the cement stone are provided by both high-temperature filler and the modified matrix on the basis of the Portland cement. For production of heat-resistant compositions as high-temperature filler, it is offered to use the secondary and accompanying products of production of carbide of silicon (SiC) and production wastes of the abrasive tools on a ceramic base. Increase in heat-resistant properties of the Portland cement knitting substance is offered to be solved by introduction to the structure of a cement composition of single substituted orthophosphate of calcium. The choice as an additive to the Portland cement a single substituted orthophosphate of calcium (double superphosphate) is proved by questions of safety measures and ecology, when using ortho-phosphoric acid and its salts for giving to cement compositions heat-resistant properties. The multicomponent composition of fine-grained concrete makes it possible to operate effectively the processes of forming the structure of cement stone at all stages of the technology, and to obtain materials with the most diverse set of properties. An introduction to the structure of a composite of 5% of filler of cyclonic dust of carbide of silicon, and a replacement of quartz filler by waste of abrasive production gave the increase of the compressive strength at 12%, bending strength for 36%. The thermal firmness increased by 3 times. An introduction to the structure of heat-resistant composition of single substituted orthophosphate of calcium (double superphosphate) in a number of 0.2% of the mass of cement allowed to increase the thermal firmness of structures to 20 heat exchanges (water, 800 oС).

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Wu, Guang Feng, Xiao Bin Zhang, and Wei Wu. "Microstructure and Corrosion Resistant Property Research of Super 304H and TP347H Heat-Resistant Steel Welding Joint." Advanced Materials Research 295-297 (July 2011): 1402–7. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.1402.

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Microstructure of Super 304H and TP347H austenitic heat resistance steel welding joint by handwork argon tungsten-arc welding and electro-chemical corrosion property of weld metal and two base materials were investigated by SEM and M273 constant potential rectifier. The results shows that microstructure of the weld metalwere austenitic matrix + δ ferrite; In 5% HCl Solution, corrosion resistant capabilities were super 304H base material＞ weld metal＞TP347H base material; in 9.8% H2SO4 Solution, corrosion resistant capabilities were Super 304H base material＞TP347H base material＞ weld metal; Super 304H and TP347H austenitic heat resistance steel welding joint has better corrosion resistant property in HCl solution than in H2SO4 solution; Inter-crystalline corrosion results were consistence to results electro-chemical corrosion experiment in 9.8% H2SO4 solution.

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KhLYSTOV, A. I., M. V. KONNOV, A. V. VLASOV, and E. A. ChERNOVA. "INORQANIC HIAT RESISTANT INDUSTRIALWORSES AS RAW WABERTAL BASE FOR MANUFACTUREOF FARE RESISTANT KILN MATERIALS." Urban construction and architecture 1, no. 4 (December 15, 2011): 87–92. http://dx.doi.org/10.17673/vestnik.2011.04.17.

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The question of usage of high-heat inorganic waste material of industry in the structure of heat-resistant binding agents, fillers and concretes is considered. It was established that physical and thermal properties of heat- resistant composites depend on the type of concrete used for chemical binding of anthropogenic raw material. The ways of an efficient choice of raw components and heat- resistant binding agents are suggested for optimization of the structures of refractory lining materials.

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Husarova, I. O., O. M. Potapov, B. M. Gorelov, T. A. Manko, and G. O. Frolov. "Model composition heat-resistant materials for multifunctioal coating." Kosmìčna nauka ì tehnologìâ 28, no. 1 (February 28, 2022): 43–50. http://dx.doi.org/10.15407/knit2022.01.043.

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A schematic diagram of composite material for a heat-resistant multifunctional coating providing radio invisibility and thermal protection of parts of missiles is proposed. Organosilicon binder KO-08K, inorganic binder НС-1A, and heat-resistant mastic NEOMID-TITANIUM were researched to select the materials of the heat-resistant matrix. Based on the analysis of the results of thermal desorption spectrometry of organosilicon binder and mastic NEOMID-TITANIUM with heat-resistant fillers, it was found that the thermal destruction is most effectively reduced by the matrix filler with perlite and aluminum. The efficiency of the selected composites at a high rate of temperature change was evaluated by the heat stroke method. It was revealed that samples based on the organosilicon binder with fillers failed to provide the required heat resistance of the material: NEOMID-TITANIUM mastic can be used in case of filling with 2 % of aluminum and aluminum-silicate binder HC-1A in the case of filling with 5 % aluminum and 10 % mullite. Selected materials were tested in a jet of a gas-dynamic burner. The results confirmed the need to reinforce the matrix with heat-resistant fabrics to increase its strength and erosion resistance. Heat-resistant silica fabric KT-11 and silica heat-resistant tape LKA-1200 were used as heat-resistant radio-transparent reinforcing fabric fillers. Thermo-erosion tests of reinforced samples in the jet of a gas-dynamic burner showed that the minimum linear removal was obtained on samples with a matrix based on NEOMID-TITANIUM mastic, which was reinforced with KT-11 fabric (outer layer) and LKA-1200 tape, which allows using these materials to create the multifunctional coating.

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Yan, Jun, Hong Lu Bai, Jiao Liu, and Da Jun Song. "Analyzing on the Reasonable Composition of High-Chromium Alloy Cast Iron to Make the Mud Pump Shell of Dredger." Advanced Materials Research 734-737 (August 2013): 2465–69. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.2465.

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Chose high-chromium cast iron as the material to make the mud pump shell, the composition of high-chromium alloy has been optimized and five kinds of alloy ( A, B, C, D and E) are designed. Furthermore, using the heat treatment method of air-cooled quenching of 1040°C + 260°C tempering, the relationship among material hardness, the impact toughness and the heating temperature is analyzed after heat treatment. Finally, the abrasion performance of wear-resistant materials is tested. The test result shows that all kinds of wear-resistant materials display well anti-abrasion performance, where the material E has the best relative wear resistance and 19.3% higher than the imported pump casing material. The results provide a scientific standard for selecting the practical wear-resistant materials and locating the piece casting bivalve pump of Cr26 high-chromium cast iron.

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Бессмертный, Василий, Vasiliy Bessmertnyy, Оксана Соколова, Oksana Sokolova, Надежда Бондаренко, Nadezhda Bondarenko, Диана Бондаренко, et al. "PLASMACHEMICAL MODIFICATION OF THERMAL INSULATED BLOCKS WITH DECORATIVE COATING." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 4, no. 3 (April 10, 2019): 85–92. http://dx.doi.org/10.34031/article_5ca1f6331ec888.51255959.

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The impact of plasma of an arc plasmatron on plasmochemical modification of a two-layer heat-resistant decorative covering on the protecting foam glass blocks is investigated. The optimum technological parameters of plasma processing of such blocks with a preliminary basis of finely divided glass containers and high-quality glass breakage are determined. It is shown that the texture and quality of a two-layer heat-resistant decorative covering are affected by speed characteristics of the plasma torch. It is established experimentally that when the arc-plasma reflow rate is 5 mm /s, a continuous wavy coating is formed on the surface of the foam glass block, and at 10 mm /s – a continuous coating with even spill. Intermediate heat-resistant and basic compositions of decorative two-layer coating for plasma-chemical modification of enclosing blocks of heat-insulating materials have been developed. The intermediate heat-resistant structure includes the following ingredients: heat-resistant aluminous cement, crushed and fractioned high-aluminous refractory material, liquid glass. The basic structure includes mixture of fine ground glass powder of tare and high-quality glasses with the crushed high-aluminous refractory material. The following performance indicators are investigated: adhesion strength of the coating with the matrix, frost resistance, microhardness, acid resistance, water resistance, abrasion resistance, moisture resistance and resistance to neutral salt spray test.

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Tukhareli, V. D., O. Y. Pushkarskaya, and A. V. Tukhareli. "Methodological Approaches in Assessing the Possibility of Using Waste Electrocorundum Materials in Concrete Compositions." Solid State Phenomena 284 (October 2018): 1030–35. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.1030.

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Heat-resistant concretes have been successfully used in many heat units and building structures. Making concrete heat-resistant is possible through the development of a heat-resistant phosphate matrix, aluminophosphate binder. The compositions of high-refractory concretes on aluminophosphate binder with electrocorundum and chrome-aluminous slag have relatively high strength up to 70 MPa after heat treatment. Wastes generated as a result of technological activities of enterprises have several technical and economic advantages as industrial raw materials. After passing the production possibility frontier, the material not only has not lost its properties, but became more prepared with the position of the grain composition and growth of specific surface area, heat treatment for use in the technology of concrete and refractory concrete, in particular, as heat-resistant fillers. The methodological approach in the study of defective ceramic-bond abrasive wheels has been proposed herein. The chemical, grain and mineralogical analyses of the material after mechanical grinding allowed us to define it as an aggregate for concrete in order to give it heat-resistant properties. The obtained concrete composition has a tensile strength 2.5 times higher than conventional cement composition of concrete and thermal resistance (water, 800°C) of the composition with heat-resistant filler has increased in 5 times.

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Zhang, Lin Chun. "Assessment of Heat Resistant Concrete of Magnesia-Phosphate." Advanced Materials Research 800 (September 2013): 341–44. http://dx.doi.org/10.4028/www.scientific.net/amr.800.341.

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In this paper, we choose heat resistant material wollastonite and corundum to get the concrete which has heat resistance up to 600 centigrade. SEM reveals that at the temperature of 400 centigrade and 600 centigrade, the material is very dense. But when the temperature gets 800 centigrade and 1000 centigrade, the SEM reveals cracks. The refractory concrete made by magnesium potassium phosphate as the binder and wollastonite and corundum as aggregate has short setting time, early strength and rapid hardening. And it is suitable for emergency repair materials for the kiln.

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Baranova, T. F., and S. A. Valiakhmetov. "Ceramic Material for Making Heat-Resistant Products." Refractories and Industrial Ceramics 57, no. 1 (May 2016): 46–49. http://dx.doi.org/10.1007/s11148-016-9925-6.

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Chukhlanov, V. Yu, O. G. Selivanov, and M. E. Ilina. "Development of Heat-Resistant Composite Foam Material." Materials Science Forum 1082 (March 31, 2023): 141–45. http://dx.doi.org/10.4028/p-026s0w.

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The paper is devoted to the research results dealing with the development of heat-resistant composite cellularmaterial, where polymer matrix is based on10% polycarbosilanesolution in xylene, hollow microspheres and fibrous mineral material are used as fillers. In this study, the used hollow microspheres are corundum and aluminosilicate microspheres, and fibrous filler is quartz fiber. According to the experiments, the best results refer to thecomposite foam samples, containing hollow corundum microspheres as filler. The developed composite foam is characterized with low thermal conductivity and density, good physical and mechanical properties,when polymer binder content was 20-70% wt., corundum hollow microspheres - 20-60% wt., and quartz fiber material - 10-50% wt. Thus, the developed composite foam might be recommended for the applicationin high-tech industries, including heat and power engineering, nuclear power and aircraft construction as high-temperature thermal insulation material.

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Doroshenko, O. "Use of modified basalt fiber in transport construction." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies", no. 42 (December 12, 2023): 58–68. http://dx.doi.org/10.32703/2617-9059-2023-42-5.

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Basalt fiber is a promising material that can be used to create a new class of building materials. It has a number of advantages, including high strength, low weight and resistance to chemicals. One of the disadvantages of basalt fiber is its low alkali resistance. In an alkaline environment, the fiber is destroyed, which limits its use in building materials exposed to alkalis. The paper investigates the effect of heat treatment on the alkali resistance of basalt fiber. It was found that heat treatment at a temperature of 500 0C increases the alkali resistance of the fiber by 80%. This is due to the compaction of the fiber structure and the formation of iron-oxygen tetrahedra on its surface, which are resistant to alkalis. The authors of the article substantiate the feasibility of using heat-treated basalt fiber in transport construction. This material can be used to manufacture new types of building materials that are resistant to alkalis.

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Tang, Jin Jun, Liang Jun Fei, Zhao Hui Gong, Xiu Rong Zhu, and Hong Xia Shi. "Effect of Alloy Composition on the Microstructure and Mechanical Properties of Al-Fe-V-Si Heat-Resistant Aluminum Alloy." Applied Mechanics and Materials 433-435 (October 2013): 2072–75. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.2072.

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Heat-resistant aluminum alloy because of its low density, low price, good heat resistance and corrosion resistance, has been widely used in aviation, aerospace, weapons and other industrial fields. In this paper, preparation of Al-Fe-V-Si heat-resistant aluminum alloy materials is used in the RS/PM process, and studied the influence law of effect of alloy composition on the microstructure and mechanical properties of heat-resistant aluminum alloy. The results show that, Fe, V, Si element content and Fe/V ratio has great effect on the microstructure and mechanical properties. When the Fe content is too low, the content of Al12(Fe, V)3Si phase is less. Mechanics to improve material properties cannot be maximum; if the content of Fe is excessive, the strength of the material do not increase, but decrease the plastic. The addition of V element can be stabilized in Al12(Fe, V)3Si Si phase; and the addition of Si can inhibit the second-phase dispersion phase coarsening and decomposition, increase the high temperature stability of materials; Fe/V ratio affects the coarsening rate of second-phase particles, thus affecting the thermal stability of materials.

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TAKEDA, Nobuyuki, and Masao KAMEYAMA. "Heat-resistant polyimide resin as a base material for composite materials." Journal of the Japan Society for Composite Materials 12, no. 2 (1986): 56–64. http://dx.doi.org/10.6089/jscm.12.56.

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Tukhareli, V. D., T. F. Cherednichenko, and O. Y. Pushkarskaya. "New Unconventional Additives in Concrete Technology for Expansion its Functionality." Solid State Phenomena 265 (September 2017): 231–36. http://dx.doi.org/10.4028/www.scientific.net/ssp.265.231.

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Functional enhancement of concrete, giving it heat-resistant properties becomes possible while adding mill ground additions based on silicon carbide materials of the region. The selection of silicon carbide waste and secondary production materials as a filler for the production of concrete with heat-resistant properties was based on the following principles: dispersion, the chemical composition, phase composition that reflect the chemical activity of the material in relation to the concrete binder. The thermal resistance of concrete has increased fivefold. In forming concrete structures with addition of silicon carbide occurs embedding into the structure of hydrates fine powder silicon carbide cyclone dust, with the chemical processes behaviour in the boundary contact zone between binder and filler. The increase of thermal resistance can attribute the resulting concrete composition to the category of heat-resistant concretes, and that significantly expands the functionality of concrete.

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Dyatlova, Evgenia M., Fedor I. Panteleenko, Rostislav Yu Popov, and Alexandra S. Samsonova. "Obtaining heat-resistant ceramics based on various natural and synthetic materials." Transactions of the Kоla Science Centre of RAS. Series: Engineering Sciences 1, no. 1/2023 (March 29, 2023): 96–104. http://dx.doi.org/10.37614/2949-1215.2023.14.1.018.

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The paper presents the results of studies of the possibility of obtaining heat-resistant ceramic products based on natural clay raw materials of the Republic of Belarus of various mineral composition, Onotsky talc, as well as synthetic alumina-containing components. The processes occurring during the synthesis of ceramics for technical purposes, the change in the phase composition and properties of the material during heat treatment have been studied. The conditions for obtaining a heat-resistant material, as well as the parameters of its operation, are determined. On the basis of the obtained experimental data, laboratory and industrial tests, the prerequisites for organizing the production of heat-resistant ceramics in the Republic of Belarus based on domestic clay raw materials have been created.

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Zhigulina, Anna Yu, Sergey A. Mizuryaev, and Alexandr G. Chiknovoryan. "Fire-resistant Heat Insulating Material with Variable Rheology." IOP Conference Series: Materials Science and Engineering 661 (November 20, 2019): 012106. http://dx.doi.org/10.1088/1757-899x/661/1/012106.

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Su’udi, A., J. Akmal, N. Tanti, and Arizon . "USING GEOPOLYMER COMPOSITES FOR HEAT AND CORROSION RESISTANT PIPES." Materials and Corrosion Engineering Management 1, no. 1 (June 22, 2020): 17–20. http://dx.doi.org/10.26480/macem.01.2020.17.20.

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This research studied the use of carbon fiber reinforced geopolymer composites as corrosion resistant pipe material. Geopolymer material is a general term for material synthesized from fly ash. Fly ash is an industrial by-product (coal combustion residue) with high silica content (SiO2) and Alumina content (Al2O3). In addition, there are also other elements in a relatively small percentage. This material will compound like cement if activated with Sodium Silicate. This study aims to obtain the optimum composition for high quality mechanical properties. The method used is to synthesize material with various elemental compositions. Furthermore, a mechanical test (bending test) is performed to see the effect of each element to be optimized. Besides that, a physical test in the form of SEM-EDX was also conducted to see the microstructure. Materials with optimum composition have been fabricated as pipes with centrifugal casting process. Mechanical testing of pipe samples is done by hoop tensile strength test. The test results show that the strength of geopolymer composites can achieve 58 MPa.

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Huang, Fang. "Technology of Heat-Resistant & High Voltage-Resistant Insulation Materials Based on Polymer Composite." Advanced Materials Research 391-392 (December 2011): 340–44. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.340.

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High voltage insulation of the heat-resistant polymer composite material mainly composed of synthetic resin matrix, reinforcing materials, inorganic fillers, pigments and other components. In addition, according to the technical and performance requirements will be added in the resin matrix curing agent, thickener, mold release agents, solvents and so on. By different proportions of the resin matrix and filler and other additives, under conditions in certain insulating polymer composites were prepared to explore the relationship between components, the best formula and the ideal insulation material.

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Reva, Olga Vladimirovna, Nikolai Mikhailovich Dmitrakovich, and Evgeny Vladimirovich Matskevich. "Development of composite fire-resistant light-reflective materials on a textile basis and testing of their properties." Technology of technosphere safety, no. 101 (2023): 8–24. http://dx.doi.org/10.25257/tts.2023.3.101.8-24.

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Introduction. At present, a large set of requirements is imposed on protective clothing, which is difficult to achieve for a single material and is implemented in a multilayer composite product on a textile basis. One of the promising ways to obtain heat-reflecting fabrics is the application of a plastic heat-resistant polymer layer, either containing metal particles, or subsequently metallized, to a fire-resistant or fire-resistant textile material. In addition, there are a number of problems in complex testing of the obtained composites, which do not meet the characteristics of both textile and bulk or film polymers and metals. State standards, which set out test methods for firefighters' protective clothing, are regularly supplemented, but contain a number of difficult-to-combine requirements. To ensure a set of requirements for protective clothing, composite layers of heat-resistant polyorganosiloxane resins modified with flame retardants of various chemical nature were applied to oxodiazole and silica fabrics and their fire resistance, mechanical strength and ability to reflect light and heat fluxes were studied. The purpose of the study is to study in a complex the dependence of the physical-mechanical, fire-retardant and reflective properties of composite textile materials on nature and the concentration of a flame retardant and functional additives in a metal-containing polyorganosiloxane resin applied to a textile base. Research methods. To obtain the results, we used a comparative system analysis of literature data and experimental results, complex tests of composite fire-resistant reflective products on a textile basis according to the methods of state standard Р 53264-2019. Research results. The conditions for obtaining new textile-based composite materials and their optimal composition have been developed, providing the product with high mechanical strength, incombustibility (oxygen index 29-32 %), high ability to reflect radiation and heat fluxes (IR radiation reflection coefficient 75-80 %). New materials fully meet the requirements of state standard for protective clothing. Conclusion. The tests carried out on certified equipment make it possible to determine the optimal composition of the modified polymer resin and the method of processing oxodiazole and silica fabrics to obtain a heat-, fire-resistant, light- and heat-reflecting material for protective clothing. Keywords: oxodiazole and silica fabric; fire resistance; light and heat reflection; metal-containing polymer binders; flame retardants.

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Vereschaka, A. A., A. S. Vereschaka, and A. I. Anikeev. "Carbide Tools with Nano-Dispersed Coating for High-Performance Cutting of Hard-to-Cut Materials." Advanced Materials Research 871 (December 2013): 164–70. http://dx.doi.org/10.4028/www.scientific.net/amr.871.164.

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The problem of increasing performance of carbide too lin machining hard-to-machine materials has been studied. Composite material was developed comprising carbide with heat-resistant bond Co-Re, significantly increasing resistance of carbide to thermoplastic deformation, and nanodispersed multilayer composite coating, significantly reducing thermomechanical impact on cutting part of tool.Studies to find the performance of tool made of developed composite material in turning hardened steel40H and heat-resistant nickel alloy HN77TYUR have shown its superiority compared to commercial carbides with coatings of modern generation.Studies have found out practicability of using VRK-13 cobalt-rhenium carbides with reduced content of expensive rhenium from 9% (weight) Re to 6% (weight), and it is highly competitive by heat resistance with VRK-15 carbide and is significantly superior to it by its strength.Results of cutting properties research forultra-dispersed Re-added WC-Co-carbides with Ti-TiN-TiCrAlNnano-dispersed multilayer composite coating are presented at longitudinal turning of constructional steels and hard-to-machine alloys. It is shown that the combination of ultra-dispersedheat-resistant WC-(Co,Re)-carbides and wear-resistant Ti-TiN-TiCrAlN coatings increase cutting properties of tool in some times.

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Aliev, Az A., V. N. Zimin, V. A. Tovstonog, and V. I. Tomak. "A Wedge witha Heat-Resistant Lining in a High-Speed Airflow: Comparative Estimate of the Thermal State." Herald of the Bauman Moscow State Technical University. Series Mechanical Engineering, no. 1 (140) (March 2022): 4–23. http://dx.doi.org/10.18698/0236-3941-2022-1-4-23.

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The efficiency and maximum height, speed and duration characteristics of the flight path of high-speed atmospheric aircraft are largely determined by the temperature regime of the most heat-stressed structural elements, suchas the edges of airframe airfoils. Their active thermal protection systems contribute to solving a number of complex scientific and technical problems, the most promising and simple solution being heat-resistant inorganic materials of the oxide class. However, their use for the structural design of the edge as a monolithic structural element is difficult both in terms of technology and strength characteristics, especially in the heat shock mode. In this regard, a promising solution is an edge in the form of a core made of heat-resistant and heat-conducting materials with a high-temperature oxide ceramic lining, which protects from the environmental oxidative effects and provides the permissible temperature regime of the core due to thermal resistance determined by the thickness of the lining. The study examines the temperature conditions of the wedge-shaped edge with a heat-conducting core and a heat-resistant ceramic lining. When choosing materials for the core and lining, it is important to preliminary calculate and estimate the parameters of the edge performance, taking into account the data on the thermophysical and physicomechanical properties of the materials. The study comparatively analyzes the thermal state of a prefabricated wedge with a heat-conducting core made of hafnium boride, which is an advanced heat-resistant material, and molybdenum and nickel, which are more technological and cheap metal materials, with a lining of oxide heat-resistant ceramics

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Li, Hong Bo, Hai Tao Li, Chun Jie Li, and Li Jie Qu. "The Effect of Cr Content on the Microstructure and Performance of Heat Resistant Nodular Cast Iron." Advanced Materials Research 430-432 (January 2012): 273–76. http://dx.doi.org/10.4028/www.scientific.net/amr.430-432.273.

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By way of alloying, a sort of low-chromium heat-resistant ductile iron material was developed. Through the observation of microstructure, testing of mechanical properties and process performance, heat-resistant test, the microstructure and properties of heat resistant ductile iron of low chromium was studied. The results show that microstructure of the developed heat-resistant ductile iron is spherical graphite distributed regularly on matrix of pearlite and a small amount of ferrite; mechanical properties, processing performance and high-temperature heat resistance of samples of different chrome composition are preferable, but 1.6% of chromium component possess the best performance.

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Wang, Xiaomin, Yang Su, Lili Guo, Yan Liu, Honggang Li, and Hailin Ren. "Research Progress of Heat Resistant Magnesium Alloys." Journal of Physics: Conference Series 2160, no. 1 (January 1, 2022): 012015. http://dx.doi.org/10.1088/1742-6596/2160/1/012015.

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Abstract Magnesium alloy has extremely excellent properties and is known as “21st Century Green Engineering Material”. This article mainly introduces the influence of the heat resistance and comprehensive performance of the three series of Mg-Al, Mg-Zn and Mg-RE heat-resistant magnesium alloys after adding rare earth elements, alkali metal elements and other elements. Three development directions of improving the heat resistance of magnesium alloys are prospected. These are: 1. Using cheap alloy elements (such as Ca, Si, etc.) to replace rare earth elements of the heat-resistant magnesium alloy, 2. Titanium element is added to improve heat-resistant magnesium alloy’s mechanical properties and its strength, 3. The new casting process and processing technology are used to improve the heat-resistant magnesium alloy’s properties. This article aims to provide technical reference for the development of my country’s magnesium alloy industry.

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Singh, Kanwal Jeet, Inderpreet Singh Ahuja, and Jathinder Kapoor. "Optimization of material removal rate in ultrasonic machining of polycarbonate bulletproof glass and acrylic heat-resistant glass by Taguchi method." Multidiscipline Modeling in Materials and Structures 13, no. 4 (November 13, 2017): 612–27. http://dx.doi.org/10.1108/mmms-04-2017-0019.

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Purpose The purpose of this paper, an original research paper, is to study the optimization of material removal rate (MRR) in ultrasonic machining of polycarbonate bulletproof glass and acrylic heat-resistant glass. The machining of these materials is a very tough job. There are so many constraints which need to be taken into account while machining, but without proper knowledge of material properties and machining parameters, machining is not possible. This paper gives basic knowledge about polycarbonate bulletproof and acrylic heat-resistant glass and provides ways as to how these types of materials are processed or machined. Design/methodology/approach The Taguchi method was utilized to optimize the ultrasonic machining parameters for drilling these advanced materials. The relationship between MRR and other controllable process parameters such as concentration of slurry, type of abrasive, abrasive grit size, power rating, concentration of HF acid and type of tool material has been analyzed by using the Taguchi approach. Findings Through the Taguchi analysis, it is concluded that types of abrasive and HF acid concentrations have a significant role to play in MRR for both materials; in which, type of abrasive have 72.91 and 72.96 percent contribution in MRR for polycarbonate bulletproof and acrylic heat-resistant glass, respectively. Similarly, HF acid concentration has 14.70 and 14.65 percent contribution in MRR for polycarbonate bulletproof and acrylic heat-resistant glass, respectively. The MRR was improved by 34.44 percent in polycarbonate bulletproof glass and 29.25 percent in acrylic heat-resistant glass. Originality/value After experimental investigation, the results of the Taguchi modal are validated.

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Yano, Yuki, Kazuya Wada, Takuya Aoki, Toshio Ogasawara, and Shinjiro Umezu. "Fabrication and Mechanical Properties of C/C-HfC-SiC Composites." Key Engineering Materials 625 (August 2014): 657–61. http://dx.doi.org/10.4028/www.scientific.net/kem.625.657.

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Reusable spacecraft/supersonic aircraft is research and development towards the realization of a new aerospace transportation system.Because these transport aircraft is to flight at a speed of more than Mach 5,are considering the use of scramjet engine.Because this engine uses air as an oxidant and liquid hydrogen as a fuel,the combustion gas temperature is more than 2500°C.So the combustor is required lightweight material and super-heat-resistant material.In the field of aerospace,SiC-based ceramics that is heat-resistant materials are well known as to maintain the mechanical properties at high temperatures and have a high oxidation resistance.However, this material limit as heat-resistant material is about 1600 °C .Therefore, it can not be used in an environment of scramjet engine combustor.There are the measures by metal structure to be force-cooled by refrigerant fuel,but apply is difficult because the system is complexity and very heavy. In this study use the hafnium-based super heat-resistant ceramics that is having a melting point more than 2000°C. Purpose is to develop a new technique for forming the ceramics mainly composed from Hafnium Carbide (Melting point:3950°C) that is very high melting point and have oxidation resistance by melt impregnation to inside C/C composite.In addition, implement the evaluation of changes in the organization after each process by the cross-sectional observation and strength assessment by three-point bending test.

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Panteleenko, F. I., V. A. Okovity, O. S. Devoino, A. A. Litvinko, V. V. Okovity, V. M. Astashinsky, and V. M. Blumenstein. "Aspects of Creating Multilayer Coatings by Plasma Spraying." Science & Technique 22, no. 3 (June 5, 2023): 179–85. http://dx.doi.org/10.21122/2227-1031-2023-22-3-179-185.

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In the work, taking into account the state of the issue in the field of applying multilayer heat-shielding and wear-resistant coatings, directions of research are substantiated. The objectives of the development are: improvement of powder materials containing zirconium dioxide partially stabilized with yttrium oxide for plasma deposition of heat-shielding coa-tings; improvement of powder materials containing oxide ceramics and nickel-based alloys for plasma deposition of wear-resistant coatings; development of technological parameters of plasma spraying and subsequent processing by the effects of compression plasma on the coating; analysis of the quality of protective coatings obtained using the optimal technology by studying their structure and physical and mechanical properties. The ZrO2 – 7 % Y2O3 particles contain the predominant tetragonal Y0.15Zr0.85O0.93 phase, monoclinic and cubic ZrO2 phases, and the Al2O3–TiO2–Ni–Cr–Al–Y–Ta composition contains the Cr1.12Ni2.88 phase of the nickel-based solid solution, the a-Al2O3, g-Al2O3 phases, and the orthorhombic phase of titanium oxide TiO2 that contribute to its wear resistance. subsequent optimization of technological parameters for the process of plasma spraying of multilayer heat-shielding and wear-resistant coatings. Technological parameters for the process of plasma spraying of multi-layer heat-shielding and wear-resistant coatings are investigated with subsequent optimization. The optimization criteria were the utilization factor of the sprayed powder material and the structure of the coatings. The influence of the spraying distance on the values of operational characteristics of the formed plasma coatings on Al2O3–TiO2–Ni–Cr–Al–Y–Ta has been studied. The obtained results of controlling the phase composition of coatings by varying the chemical composition of powder materials are presented. In the process of deposition, the differences in the phase composition of the formed material are the more significant, the more inhomogeneous the distribution of elements in the initial powder material. Tests have been carried out for cyclic testing in an oven at a maximum temperature within 1300 °C of heat-shielding coatings to determine their heat resistance. They proved the influence of the phase composition of the formed coatings on their ability to withstand high-temperature oxidation.

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Khlystov, Aleksey, Vladimir Shirokov, and Elena Vlasova. "Specific utilization methods of high-melting wastes from the enterprises of chemistry and non-ferrous metallurgy." MATEC Web of Conferences 196 (2018): 04010. http://dx.doi.org/10.1051/matecconf/201819604010.

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The article provides information on industrial waste generation at enterprises of the Samara region, suitable for use as raw materials components of such heat-resistant composites as solutions, concretes, gun mixes, coatings. The research indicates rational ways of some heat-resistant binders application for utilization of mineral high-melting and heat-resistant industrial wastes. It proves that the enrichment of certain types of industrial waste, i.e. bringing the chemical composition of their components to the required state, allowed to expand the raw material base for the synthesis of heat-resistant binders and concrete in general. The use of sludge waste in the processes of synthesizing liquid phosphate binders allowed to obtain such effective binders as aluminophosphates and aluminocalciumphosphates. The research proves that application of technogenic wastes of non-ferrous metallurgy enterprises allows to receive heat-resistant materials solutions, concretes, coatings, gun mixes which characteristics are similar to their industrial analogues.

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Yanwu, Yu, Ma Hui, Guo Jiahu, Meng Jingwei, Jing Suming, Cheng Guimin, and Wei Zihui. "Thermal Analysis of a New Heat-Resistant Energetic Material." Science of Advanced Materials 14, no. 1 (January 1, 2022): 147–54. http://dx.doi.org/10.1166/sam.2022.4177.

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4,4′-Dichloro-2,2′,3,3′,5,5′,6,6′-octanitroazobenzene (DCONAB) is a kind of new heat-resistant energetic material. In the paper, its thermal decomposition kinetics was investigated by means of the thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The properties of the DCONAB, such as geometry, theoretical density, enthalpy of formation, detonation parameters, were studied by using the density universal culvert theory at the B3LYP/6-31+G (d, p) level. The results indicated that the density distribution of the DCONAB was up to 1.99 g/cm3 and its detonation rate was close to 8851 m/s. We obtained thermal analysis curves of the DCONAB at different heating rates and we analyzed the kinetic parameters such as activation energy (Ea) and exponential factor (A) with Kissinger and Flynn-Wall-Ozawa methods. Meanwhile, we investigated the decomposition mechanism of the DCONAB with the Satava-Sestak method. The results indicated that the thermal decomposition mechanism of the DCONAB related to nucleation and growth, with the reaction order n being 1. The integral form of the kinetic function was g(α) = α. The activation energy was 131 kJ/mol and the pre-exponential factor 1.375×1012 min−1.

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Toturbiev, B. D., S. A. Mamaev, A. B. Toturbiev, and U. D. Toturbieva. "LOCAL NANODISPERSED SILICA RAW MATERIAL FOR HEAT RESISTANT COMPOSITION." PROCEEDINGS OF INSTITUTE OF GEOLOGY DAGESTAN SCIENTIFIC CENTER OF RAS, no. 3 (2021): 79–85. http://dx.doi.org/10.33580/2541-9684-2021-86-3-79-85.

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Artamonov, E. V., D. V. Vasil'yev, and M. O. Chernyshov. "Chip Breaking During Automated Processing by Cutting Hard-to-Work Steels by Integrated Use of Chip Breaking Tools and High-Temperature Embrittlement." Proceedings of the Southwest State University 24, no. 1 (June 23, 2020): 8–22. http://dx.doi.org/10.21869/2223-1560-2020-24-1-8-22.

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Purpose of research is to increase productivity when cutting hard-to-work steels by integrated use of chip breaking tool geometry and cutting modes, which reduce the viscous properties of the chips and the processed material. The article discusses the problems of mechanical processing of parts of oil production equipment at enterprises in Western Siberia. It is presented the main condition for ensuring chip crushing and revealed the problem of low efficiency of existing methods in modern industry, to one degree or another guiding, curling and chip-cutting method.Methods. Simulation modeling, calculation of chip direction and crushing were performed; effective methods for solving the problem of chip crushing during the machining of parts made of materials with corrosion-resistant, heat-resistant properties were identified; laboratory, persistent tests of the complex method were carried out.Results of studying the mechanism of chip formation during processing by cutting heat-resistant and corrosionresistant alloys are given here. To solve the problem, we have formulated two tasks that were solved using information taken from the theory of material resistance, tensile diagrams when testing samples of corrosionresistant, heat-resistant materials with high operational properties. A chip breaking exchangeable insert with a variable rake angle is designed and presented. The results and analysis of laboratory test data, in which a plate with chip breaking geometry of the front surface is used, are presented, the operating conditions of effective chip breaking are shown. The conclusions on the solution of the first problem are formulated, it is shown that the determining factor in chip breaking is the physical and mechanical characteristics of the processed material, which vary with different cutting conditions.Conclusion. The work shows that chip removal from the cutting zone prevents it from entering the cutting edge area, reducing impact loads on it and improving the quality of machining. It is possible to form stress concentrators in the chips, leading to chip self-destruction even when processing viscous heat-resistant alloys. The hypothesis is used that the temperature conditions for the maximum workability of heat-resistant and corrosion-resistant steels and alloys correspond to the conditions of high-temperature embrittlement, with the help of which it is possible to create conditions for effective chip crushing and conditions for maximum workability when cutting heat-resistant steels and alloys.

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Nikiforov, I. P. "Increasing machinability by cutting workpieces of parts made of heat-resistant stainless steels by high-temperature embrittlement." E3S Web of Conferences 402 (2023): 11017. http://dx.doi.org/10.1051/e3sconf/202340211017.

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Heat-resistant alloyed stainless steels are increasingly being used for critical machine parts. The limited scope of application of heat-resistant stainless steels is due to their high strength and toughness that make them difficult to machine, allowing these materials to be classified as difficult to machine. It is proposed to solve the problem of poor machinability by means of high-temperature embrittlement of material arising at achievement of a certain temperature interval in the machining zone. When high-temperature embrittlement phase appears, strength and toughness of heat-resistant stainless steels decrease, machinability of material improves, which is accompanied by reduction of cutting force and power consumption during machining, reduction of tool wear intensity and transformation of drain type of chips into element type.

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Byba, I. G., G. B. Levchenko, and O. O. Polehenko. "Heat-resistant intermetallic-based alloys and features of their alloying." Metaloznavstvo ta obrobka metalìv 30, no. 2 (June 28, 2024): 58–67. http://dx.doi.org/10.15407/mom2024.02.058.

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The work considers the prerequisites for the development of creep-resistant and heat-resistant alloys, based on intermetallics, taking into account the optimal combination of their physical and mechanical properties, as well as structural characteristics. It is shown that there is a sufficient number of intermetallics, which have a density lower than iron-based alloys, which, in combination with high melting temperatures and heat resistance, makes them promising materials for aerospace application, in particular, for gas turbine engine parts manufacturing. The most suitable creep-resistant and heat-resistant intermetallics can be called aluminides and silicides of titanium, nickel and molybdenum. For these compounds, it is possible to combine high values of specific strength with alloying-favorable types of crystal lattice. One of the most important and common creep-resistant alloys based on intermetallics is Ni3Al with FCC lattice. For this material, complex optimized alloying is the main way to increase creep resistance. The heat resistance of such alloys is significantly increased by applying ceramic coatings. Titanium aluminides Ti3Al and TiAl mainly have only a low density among the advantages. Their fragility at room temperatures and tendency to superplasticity at high temperatures significantly limits their application. The impact of disadvantages may be reduced by applying thermomechanical processing of such materials, which aims to change their structure. Alloying titanium aluminides with a large amount of niobium was chosen as a solution that significantly reduced marked week sides of Ti-Al intermetallic alloys. As a result, this led to the creation of a new alloy based on intermetallic Ti2AlNb with a high set of operational characteristics. Mo-Si and Mo-Si-B can be considered as one of the most perfect systems for creating heat-resistant intermetallic alloys. They combine an acceptable density, high creep and heat resistance, which can be additionally increased by reinforcing with ceramic particles. Keywords: intermetallic-based alloys, creep resistance, alloying, Ni-Al, Ti-Al, Mo-Si, Mo-Si-B.

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Zhou, Hua Xiang, Zheng Zhou, and Jing Ping Liu. "High Temperature Cylinder Sleeve Design Research Self-Lubricating Materials." Applied Mechanics and Materials 628 (September 2014): 53–58. http://dx.doi.org/10.4028/www.scientific.net/amm.628.53.

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Cylinder Liner design innovation goal is energy conservation. As the main friction parts engine cylinder liner, reducing friction energy is energy saving basic requirements. Materials research cylinder sleeve is one of the main cylinder liner saving research. Through the piston ring and cylinder liner surface friction dual material hard phase, self-lubricating phase, toughening phase analysis, select compatibility, high strength, heat resistance, good high temperature performance, ease of manufacture, price rational matrix material and an appropriate proportion of nanoscale hard material, self-lubricating materials, ductile materials, using appropriate methods cladding and processing, design developed high-temperature self-lubricating cylinder sets of advanced materials. The latest international high temperature, wear-resistant, self-lubricating materials research: modern nanoα-Al2O3+Ni-base alloy composite materials, Ti2B/Fe metal-ceramic composites, metals and ceramics NiCr-Cr3C2 particles CaF2 self-lubricating composite alloy powder material, NiCr/Cr3C2-WS2 self-lubricating wear-resistant materials were studied and found to TiC, Al2O3 is hard reinforcing phase, CaF self-lubricating phase, NiCr/TiC eutectic toughening phase, high-temperature self-lubricating wear-resistant nanocomposite, and Cr18Ni9 class alloy as base material, by laser cladding method enables conventional cylinder liners manufacturing technological breakthroughs, has practical value.

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Xu, Xing Wei, and Ji Yao. "Selection Research on Materials of Heat-Resistant Concrete Based on Range Theory." Advanced Materials Research 1015 (August 2014): 77–81. http://dx.doi.org/10.4028/www.scientific.net/amr.1015.77.

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Based on the technical performance index of heat-resistant concrete in a project, combined with local material performance and market supply and demand, based on the mix ratio for the concrete of strength C25, five factors as cementitious materials, admixtures, coarse aggregate, fine aggregate, admixtures were selected, every factor selected two levels, by orthogonal experiments, based on range theory, the heat-resistant concrete components that were the most suitable for the project were selected, and provided a research base for further preparation of different strength grade heat-resistant concrete.

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Willard, Johnson M. "Low-Density Resin-Based Ablative Heat Protection Materials." Science Insights 40, no. 6 (May 30, 2022): 541–44. http://dx.doi.org/10.15354/si.22.re063.

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The severe aerodynamic heating that occurs when a spacecraft reenters the atmosphere takes place. The material used for thermal protection is an essential part of the system used for thermal protection. A number of chemical and physical transformations take place in the ablation heat-resistant material that is based on resin. This material is an organic polymer. We herein briefly review the status quo of low-density resin-based ablative heat protection materials.

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Huang, Fang. "The Influence of Additives on the Heat-Resistant High Voltage-Resistant Insulation Material." Advanced Materials Research 391-392 (December 2011): 336–39. http://dx.doi.org/10.4028/www.scientific.net/amr.391-392.336.

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Typically, the resin matrix, glass fibers and fillers in the molding composition of about 80%, and other components including the initiator and inhibitor, chemical thickeners, low shrink / low waviness additives, coloring agents, release agents, etc. Although a small proportion of them, but to improve performance, processes, and molding compounds, such as SMC / BMC's performance has played a very important role.

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Varnagiris, S., S. Tuckute, M. Lelis, and D. Milcius. "SiO2 films as heat resistant layers for protection of expandable polystyrene foam from flame torch–induced heat." Journal of Thermoplastic Composite Materials 31, no. 5 (July 6, 2017): 657–67. http://dx.doi.org/10.1177/0892705717718238.

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Currently, polymeric insulation materials are widely used for energy saving in buildings. Despite of all benefits, these materials are generally sensitive to heat and highly flammable. This work discusses possibility to improve heat resistance of expanded polystyrene (EPS) foam using thin silicon dioxide (SiO2) films deposited by magnetron sputtering technique. In order to increase surface energy and adherence of SiO2 thin films to substrate EPS was plasma pretreated before films’ depositions using pulsed DC plasma generator for 40 s in argon gas. SiO2 formation was done in reactive argon and oxygen gas atmosphere. Laboratory made equipment was used for flame torch–induced heat resistance experiments. Results showed that silicon oxide films remains stable during heat resistance experiments up to 5 s and fully protects polystyrene (PS) substrate. Films are relatively stable for 30 s and 60 s and partially protect PS from melting and ignition. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy analysis confirmed that SiO2 layer, which is distributed uniformly on the EPS surface, could work as a good heat resistant material.

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Sears, James, and Aaron Costello. "Hard, Wear Resistant Metal Surfaces for Industrial Applications through Laser Powder Deposition." Materials Science Forum 534-536 (January 2007): 1537–40. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1537.

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Most materials produced today are monolithic structures that are heat treated to perform a particular function. Laser Powder Deposition (LPD) is a technology capable of modifying a metallic structure by adding the appropriate material to perform a desired function (e.g., wear and corrosion resistance). LPD offers a unique fabrication technique that allows the use of soft (tough) materials as base structures. Through LPD a hard material can be applied to the base material with little thermal input (minimal dilution and heat-affected-zone {HAZ}), thus providing the function of a heat treatment or other surface modifications (e.g., carburizing, nitriding, thermal spray and electroplating). Several materials (e.g., Stellite 6 &21, 316 SS, 420 SS, M4, Rex 20, Rex 121, 10V, AeroMet 100, CCW+, IN 625 and IN 718) have been deposited on to carbon steel (4140, 4340, 1566, 1018) substrates to provide various functions for a number of industrial applications. These surface modifications have been evaluated through standard wear testing (ASTM G-65), surface hardness (Rc), micro-hardness (vickers), and optical microscopy. The results from these evaluations will be presented along with several industrial application case studies.

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Soupionis, George, and Loukas Zoumpoulakis. "Manufacture and Characterization of Heat-Resistant and Heat-Insulating New Composites Based on Resol Resin–Carbon Fibers–Perlite for the Built Heritage Protection." Scanning 2019 (February 21, 2019): 1–8. http://dx.doi.org/10.1155/2019/8791010.

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Composite materials were created for usage as reinforcement and to protect the building envelope based on today’s global conditions such as climate change. Composite materials were manufactured using phenol-formaldehyde resin (case of resol) as a matrix, carbon fiber as reinforcement (7.5%v/v), and perlite (10%w/w) as a low thermal conductivity component, to combine high mechanical properties with good heat resistance and good thermal insulation properties. The structure of these new materials was examined through scanning electron microscopy (SEM) and elemental analysis (SEM-EDS). The addition of perlite (10%w/w) in the resite matrix (without fibers) increased the flexural and shear strength of the composite materials. On the other hand, the composite materials with fiber reinforcement show that the perlite reduces the flexural and shear strength due to the additional interfaces which were created. During heat treatment at 473 K, carbon fibers had the smallest weight loss followed by perlite while the resite matrix (i.e., the cured resol) shows the greatest weight loss. It is noted that the role of perlite is to stabilize the mass of the resite matrix during heat treatment. The composite material with carbon fibers and perlite is a heat-resistant material with only 2% weight loss at 473 K for 1 hour and shows a low coefficient of thermal conductivity, making it a new material in the direction of heat-insulating materials.

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Ostapenko, Nataliia, Marina Kolosnichenko, Larysa Tretiakova, Tatyana Lutsker, Kalina Pashkevich, Alla Rubanka, and Halyna Tokar. "Definition of the Main Features of Material Assemblies for Thermal Protective Clothing During External High-temperature Effect Modelling." TEKSTILEC 64, no. 2 (March 27, 2021): 136–48. http://dx.doi.org/10.14502/tekstilec2021.64.136-148.

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A computational-experimental method of material selection for thermal protective clothing design is proposed in this article. The intended operating temperature of the garment lies within the range of 40−170 °С. The prereq¬uisite for the research was the lack of information regarding changes in the physical-mechanical and ergonomic characteristics of material assemblies during their use under high-temperature conditions. During the initial stage of research, there was a problem associated with the selection of the most important and the exclusion of the least significant indicators, in order to further reduce the number of experimental tests in laboratory and industrial conditions. The authors used the method of expert evaluations to solve the problems related to the selection of the most significant indicators for material assemblies. Material assemblies were formed by vary¬ing the combinations of heat-resistant, heat-insulation and lining layers of materials. Initial information for the proposed method was obtained from the experimental tests of sixteen material assemblies. According to the results of the ranking, the main parameters of material assemblies were identified as follows: the temperature range for which the use of clothing is intended, thickness, mass per unit density, rupture resistance, relative tear¬ing elongation, change in linear dimensions during mechanical loads, air permeability and change in assembly thickness during cyclic loads. It was established that the assembly that includes heat-resistant material of the Nomex comfort N.307 220 top, Nomex Serie 100 heat-insulation lining and Nomex TER 135 lining provides the necessary level of protection, reliability and ergonomics, and meets cost requirements.

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Oglezneva, Svetlana A., Maxim N. Kachenyuk, and Andrey A. Smetkin. "FGM Architecture with Heat-Resistant Properties." MATEC Web of Conferences 346 (2021): 02034. http://dx.doi.org/10.1051/matecconf/202134602034.

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A composite laminated heat-resistant material was manufactured by the method of spark plasma sintering. The architecture of a bonding layer between a substrate made of a heat-resistant superalloy and a ceramic coating containing sublayers of the intermetallic NiAl and a mixture of NiAl with 15 or 30 wt. % zirconia (8YSZ) is proposed. In a layered composite, the microhardness and thermal conductivity change monotonically on going from the substrate to the outer ceramic. The coefficient of linear thermal expansion of the bonding layer is close to that for ceramics in the operating temperature range.

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Zheng, Zhi Kai, Xiang Xiao, Hao Wu, Hong Ying Li, and Pi Zhi Zhao. "Effect of Boronizing Treatment on the Conductivity of a High-Conductivity and Heat-Resisting Al-Zr Alloy Conductor Material." Materials Science Forum 1035 (June 22, 2021): 83–88. http://dx.doi.org/10.4028/www.scientific.net/msf.1035.83.

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The effect of boronizing treatment on the conductivity of a high-conductivity and heat-resistant Al-Zr alloy conductor material was studied. The results showed that the conductivity of industrial pure Al containing transition element (Ti, V, Cr, Mn)>0.01 wt % (mass fraction, the same below) was improved to a certain extent by using boronizing treatment to remove transition metal elements through the formation of borides. Using the boronizing treatment, B can react with transition elements to form blocky (Ti, V, Fe)B2 and flocculent (Ti, V, Fe, Zr)B2. The boronizing treatment makes Ti and V out of the solid solution state, form borides and finally deposit to the bottom of the furnace, thus significantly improving the conductivity of the ingot. In addition, Cr and Mn were not found in the borides at the bottom of the furnace. However, for the high-conductivity and heat-resisting Al-Zr alloy conductor material, B will have poison effects on Zr during boronizing treatment, thus reducing the heat-resistance of the alloy. Therefore, in the preparation process of high-conductivity and heat-resistant Al-Zr alloy conductor material, the converter process should be added after boronizing treatment to ensure that the Al-Zr alloy conductor material has good heat-resistance and conductivity at the same time.

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Shishelova, Tamara I., Vadim V. Fedchishin, and Mikhail A. Khramovskih. "Heat-Resistant Composite Materials on the Base of Mica and Glass." Solid State Phenomena 316 (April 2021): 46–50. http://dx.doi.org/10.4028/www.scientific.net/ssp.316.46.

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Present-day materials science requires development of compositions and technologies for production of composites with enhanced physical and technical properties. One of requirements towards such materials is an elevated heat strength. Materials, earlier used in electrothermy (ceramics, porcelain, asbestos and items made of them), have operating temperature of 400-500°С, high cost, low mechanical strength and a number of other drawbacks. Therefore, development of heat-resistant, mechanically strong and inexpensive insulation materials is an immediate problem. Mica’s characteristics to the maximum extent meet the requirements to a filler for the composite materials. Its use would enhance electric and physical properties of composites, contribute to development of waste-free technology, thus favoring the environment. Objectives of the paper: development of technology for production of heat-resistant materials on the base of heat-proof mica and special glass with elevated softening point; study of the interaction between composite components and high-temperature medium; giving recommendations on technology for fabricating heat-resistant composites with enhanced physical and technical properties. Objects of study: specimens of heat-proof mica (phlogopite), wastes of abrasive production, modifiers, glasses with high softening point. Methods of investigation: methods of thermodynamic and quantum-chemical studies were used with involvement of a complex of state-of-art physical and chemical methods. Results of study: development of theoretical grounds for forming the heat-resistant composite materials on the base of experimental studies and scientific generalizations. The technology for production of new heat-resistant materials on the base of rational use of mineral raw material and production wastes is proposed.

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Rowe, M. D., V. R. Ishwar, and D. L. Klarstrom. "Properties, Weldability, and Applications of Modern Wrought Heat-Resistant Alloys for Aerospace and Power Generation Industries." Journal of Engineering for Gas Turbines and Power 128, no. 2 (March 1, 2004): 354–61. http://dx.doi.org/10.1115/1.2056527.

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Alloy selection and alloy design both require consideration of an array of material attributes, including in-service properties, weldability, and fabricability. Critical properties of modern heat-resistant alloys for gas turbine applications include high-temperature strength, thermal stability, oxidation resistance, and fatigue resistance. In this paper, the properties of 12 solid-solution-strengthened and six age-hardenable heat-resistant alloys are compared. Weldability is an important attribute and can be a major limiting factor in the use of certain alloys. Weldability test methods are discussed, and the resistance of alloys to solidification cracking and strain-age cracking is compared. The use of weldability testing in the development of modern heat-resistant alloys is discussed with several examples cited. Finally, alloy selection for gas turbine components is outlined, taking into account both alloy properties and fabricability.

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Bespalov, A. S., V. V. Kuzmin, and V. G. Babashov. "DAMPING FIBROUS MATERIAL ON BASIS OF HEAT-RESISTANT SYNTHETIC FIBERS." Proceedings of VIAM, no. 1 (2015): 4. http://dx.doi.org/10.18577/2307-6046-2015-0-1-4-4.

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ITOH, Koji. "Development of new material for aerospace uses "heat resistant composites"." Journal of the Japan Welding Society 59, no. 6 (1990): 446–52. http://dx.doi.org/10.2207/qjjws1943.59.446.

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Yastrebinsky, R. N., A. A. Karnauhov, L. V. Denisova, and E. O. Pilavidou. "Heat-resistant structural composite material based on modified titanium hydride." IOP Conference Series: Materials Science and Engineering 945 (October 27, 2020): 012080. http://dx.doi.org/10.1088/1757-899x/945/1/012080.

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Hu, Guang, Huasi Hu, Weiqiang Sun, Yihong Yan, Mingfei Yan, and Zhongliang Li. "Lightweight and heat resistant resin-based composite neutron shielding material." AIP Advances 9, no. 7 (July 2019): 075024. http://dx.doi.org/10.1063/1.5110267.

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Baranov, D. A., E. I. Shchedrin, S. S. Zhatkin, and K. V. Nikitin. "Analysis of structure and strength properties of heat‑resistant iron‑chromium‑nickel (Inconel 718) alloy obtained using secondary metal powder composition in direct laser deposition." Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), no. 2 (June 11, 2024): 57–62. http://dx.doi.org/10.21122/1683-6065-2024-2-57-62.

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This work presents investigations on the structure, chemical analysis, and strength properties of deposited metal using two types of metal powder compositions, namely the primary powder and the residuals (secondary) of the heat‑resistant ironchromium‑nickel alloy Inconel 718.Based on the obtained results, the causes of the formation of a fine‑cellular‑dendritic directional structure with needle and dendritic morphology were determined, as well as the decrease in heat resistance of the deposited material from the secondary powder of the heat‑resistant iron‑chromium‑nickel alloy Inconel 718 at elevated temperatures.

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Němečková, Irena, Šárka Havlíková, Tereza Gelbíčová, Lucie Pospíšilová, Eliška Hromádková, Jana Lindauerová, Alžběta Baráková, and Renáta Karpíšková. "Heat-resistance of suspect persistent strains of Escherichia coli from cheesemaking plants." Czech Journal of Food Sciences 38, No. 5 (October 30, 2020): 323–29. http://dx.doi.org/10.17221/193/2020-cjfs.

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Besides its health and spoilage hazards, Escherichia coli is a process hygiene indicator for cheeses made from milk that has undergone heat treatment. Hence, its ability to persist in cheesemaking plant environment and equipment is important. In total, 120 samples from two producing plants were analysed and 72 E. coli isolates were obtained. The target was to find out whether there is a difference in heat-resistance between persistent and non-persistent E. coli strains. The strains were selected using macrorestriction analysis and recurrent detection in cheesemaking plants hereby: one strain persisting in brine for blue-veined cheeses, two strains persisting in brine for hard cheeses and one non-persistent strain from raw material. Their D(50)-values were 196; 417; 370 and 182 min, respectively, D(59)-values ranged from 20 to 32 min and z-values were 7.5; 6.6; 8.1 and 9.0 °C, respectively. The non-persistent strain was the least resistant to heating to 50 °C but it was not the least resistant generally. All tested strains were highly heat-resistant and carried genes of the heat resistance locus LHR1 and/or LHR2. Our results emphasise the need to screen for the presence of LHR genes and the occurrence of heat-resistant E. coli in cheese production where they could survive sub-pasteurisation temperatures and contaminate the manufacturing environment and finished products.

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Journal articles on the topic 'Heat resistant material'

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