Relevant bibliographies by topics / Blank coating

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Blank coating'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Blank coating"

1

Xu, Hao, Haijun Hu, Hongmei Wang, Yongjun Li, and Yun Li. "Corrosion resistance of graphene/waterborne epoxy composite coatings in CO 2 -satarated NaCl solution." Royal Society Open Science 7, no. 5 (May 2020): 191943. http://dx.doi.org/10.1098/rsos.191943.

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This study investigated the corrosion resistance of graphene/waterborne epoxy composite coatings in CO 2 -satarated NaCl solution. The coatings were prepared by dispersing graphene in waterborne epoxy with the addition of carboxymethylcellulose sodium. The structure and composition of the coatings were characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared and Raman spectroscopies. The corrosion resistance of the composite coatings was investigated by potentiodynamic polarization measurements and electrochemical impedance spectroscopy. Composite coatings with more uniform surfaces and far fewer defects than blank waterborne epoxy coatings were obtained on 1020 steel. The 0.5 wt% graphene/waterborne epoxy composite coating exhibited a much lower corrosion rate and provided better water resistance properties and long-term protection than those of the blank epoxy coating in CO 2 -satarated NaCl solution.
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Attia, Nour F., Mohamed H. Soliman, and Sahar S. El-Sakka. "Facile Route for Synthesis of Novel Flame Retardant, Reinforcement and Antibacterial Textile Fabrics Coatings." Coatings 10, no. 6 (June 19, 2020): 576. http://dx.doi.org/10.3390/coatings10060576.

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New and innovative textile fabrics coatings were facilely developed. The coating was developed based on synthesis of novel charring and antibacterial organic agent in conjunction with chitosan. N-[2,3-dibromo-4-(4-methoxy-3-methylphenyl)-4-oxobutanoyl]anthranilic acid was synthesized as organic antibacterial, reinforcement, and charring agent (OA) and then, dispersed in chitosan solution followed by coating on textile fabrics using immersion route forming new flame retardant coating layer. The developed organic molecule structure was elucidated using spectroscopic techniques. The mass loadings of developed organic agent dispersed in chitosan solution were varied between 20–60 wt.%. The coated textile fabrics have special surface morphology of fiber shape aligned on textile fibers surface. The thermal stability and charring residues of the coated textile fabrics were enhanced when compared to blank and organic agent free coated samples. Furthermore, the flammability properties were evaluated using LOI (limiting oxygen index) and UL94 tests. Therefore, the coated textile fabrics record significant enhancement in flame retardancy achieving first class flame retardant textile of zero mm/min rate of burning and 23.8% of LOI value compared to 118 mm/min. rate of burning and 18.2% for blank textile, respectively. The tensile strength of the coated textile fabrics was enhanced, achieving 51% improvement as compared to blank sample. Additionally, the developed coating layer significantly inhibited the bacterial growth, recording 18 mm of clear inhibition zone for coated sample when compared to zero for blank and chitosan coated ones.
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Anishchenko, Aleksandr, Volodymyr Kukhar, Viktor Artiukh, and Arkhipova Olga. "Superplastic forming of shells from sheet blanks with thermally unstable coatings." MATEC Web of Conferences 239 (2018): 06006. http://dx.doi.org/10.1051/matecconf/201823906006.

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The article is devoted to superplastic forming of non-uniformly heated sheet blanks from aluminum alloy AMg6M. To create an uneven temperature field over the surface of the blank, coatings made of sublimated substances were used from at temperatures 50…150°C below the superplastic forming temperature (450°C for AMg6M alloy). An aqueous solute of chloride and ammonium iodide having a sublimation temperature at normal pressure and a latent heat of conversion equal to 338 and 404°C, 330 and 355kJ/kg, respectively, was sprayed onto the central zones of the blanks. Superplastic forming of shells was carried out in two modes: 1) with simultaneous sublimation of the coating; 2) with the beginning of the sublimation of the coating upon reaching the height, which is formed by the workpiece, equal to 20-30% of the final shell height. The experiments showed a decrease in the thickness of the shells to be formed up to 4-10% on the working surface of the shells (without taking into account their flange zones) and the savings of sublimate during superplastic forming in the second mode. The optimal subliming coating for AMg6M alloy was ammonium chloride.
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Kachan, O., and S. Ulanov. "Features of the process of hot extrusion of blanks of the rotor blades of a GTE compressor." Innovative Materials and Technologies in Metallurgy and Mechanical Engineering, no. 1 (September 14, 2021): 41–46. http://dx.doi.org/10.15588/1607-6885-2021-2-7.

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Purpose. Improving the quality of manufacturing of blanks for compressor rotor blades by hot extrusion. Research methods and equipment. The research was carried out using a crank press with a force of 1000 kN, in split dies in accordance with a serial technological process. The dies were heated up to 150 ... 200 °С, to improve the work when extruding the blanks of the rotor blades made from the titanium alloy ВT8. The thickness of the copper coating was measured with an ИTMП-3 magnetic induction device with an error of ± 2 μm. X-ray spectral microanalysis was performed on an ISM-6360ALA scanning microscope. The billets were heated in an MП-2В furnace. Results. It has been established that the quality of blade blanks made of ВT8 titanium alloy obtained by hot extrusion is influenced by the state of the copper coating, which is preliminarily applied to the surface of the original blank. When the initial blanks are heated, copper is oxidized and in the temperature range of 250…700 °С the oxidation rate proceeds according to a linear pattern, and after 700…750 °С – according to a parabolic pattern. Oxidation of the copper coating occurs unevenly not only within one workpiece, but also within the batch, which leads to a decrease in durability and deterioration of the surface quality of the blade workpieces obtained by hot extrusion. Research carried out by X-ray spectral microanalysis of the copper coating revealed the presence of aluminum oxides of varying degrees of dispersion. The source of this material in the copper coating is caricature of corundum used in blowing into the surface of the billet, which is the reason for the appearance of scoring on the blade blank. It was also found that longitudinal marks on the blade are a consequence of the appearance of a matrix of tubercles (sagging) on the working surface of the die, caused by the adhesion of the deformable material of the blade to the base metal of the tool. Scientific novelty. The regularity of the influence of the heating temperature of the initial blank of the blade on the oxidation rate of the copper coating has been established. The mechanism of the influence of the oxidation of the copper coating and the adhesion of contacting materials during hot extrusion on the surface condition of the resulting blanks is disclosed. Practical value. The results obtained make it possible to improve the quality of the manufactured blanks of the compressor rotor blades by hot extrusion.
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Sun, Jie, and Gang Wang. "Preparation and characterization of a cerium conversion film on magnesium alloy." Anti-Corrosion Methods and Materials 62, no. 4 (June 1, 2015): 253–58. http://dx.doi.org/10.1108/acmm-12-2013-1336.

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Purpose – The purpose of this paper was to prepare the cerium-based conversion coating on AZ91D magnesium alloy, and its compositions, micro-morphology, corrosion resistance and the chemical valence state of the film elements were investigated. Design/methodology/approach – The methodology comprised preparation of coatings at different temperatures, which then were characterized using scanning electron microscopy coupled with energy dispersive X-ray spectroscopy, an electrochemistry workstation and by means of X-ray photoelectron spectroscopy. Findings – The conversion coating had a micro-cracked morphology. The conversion coatings were composed of MgO (or Mg-OH), CeO2 and Ce2O3. The best corrosion resistance of the cerium passivation film appeared when the treatment temperature was about 35°C. Originality/value – The corrosion current densities of conversion coatings were lower by one to two orders of magnitude than the corrosion current density of the blank sample. The rare earth passivation coating prepared under the best condition could reduce the corrosion current to 3.548 × 10−6 A/cm2.
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Winiarski, Juliusz, Anna Niciejewska, Jacek Ryl, Kazimierz Darowicki, Sylwia Baśladyńska, Katarzyna Winiarska, and Bogdan Szczygieł. "Ni/cerium Molybdenum Oxide Hydrate Microflakes Composite Coatings Electrodeposited from Choline Chloride: Ethylene Glycol Deep Eutectic Solvent." Materials 13, no. 4 (February 19, 2020): 924. http://dx.doi.org/10.3390/ma13040924.

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Cerium molybdenum oxide hydrate microflakes are codeposited with nickel from a deep eutectic solvent-based bath. During seven days of exposure in 0.05 M NaCl solution, the corrosion resistance of composite coating (Ni/CeMoOxide) is slightly reduced, due to the existence of some microcracks caused by large microflakes. Multielemental analysis of the solution, in which coatings are exposed and the qualitative changes in the surface chemistry (XPS) show selective etching molybdenum from microflakes. The amount of various molybdenum species within the surface of coating nearly completely disappear, due to the corrosion process. Significant amounts of Ce3+ compounds are removed, however the corrosion process is less selective towards the cerium, and the overall cerium chemistry remains unchanged. Initially, blank Ni coatings are covered by NiO and Ni(OH)2 in an atomic ratio of 1:2. After exposure, the amount of Ni(OH)2 increases in relation to NiO (ratio 1:3). For the composite coating, the atomic ratios of both forms of nickel vary from 1:0.8 to 1:1.3. Despite achieving lower corrosion resistance of the composite coating, the applied concept of using micro-flakes, whose skeleton is a system of Ce(III) species and active form are molybdate ions, may be interesting for applications in materials with potential self-healing properties.
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Pardo L., E., S. E. Rodil, B. Campillo, I. Dominguez, J. G. González-Rodriguez, and H. Martinez. "Wear Behavior of a Ni/Co Bilayer Coating by Physical Vapor Deposition on AISI 1045 Steel." Journal of Nuclear Physics, Material Sciences, Radiation and Applications 8, no. 2 (February 10, 2021): 203–9. http://dx.doi.org/10.15415/jnp.2021.82027.

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Coatings by physical vapor deposition (PVD) have become highly relevant due to their wide range of applications and the rapid rate of coating formation. In this work, AISI steel 1045 was coated with two layers, Ni and Co using the PVD technique. Each coating was deposited with a thickness of 1 μm. After applying the coatings, a post-treatment was applied in an AC plasma reactor using a boron nitride blank in an Ar atmosphere at a pressure of 3 Torr, 0.3 A, and 460 V at 4, 8, and 12h. The post-treatment was characterized by optical emission spectroscopy (OES) in a range of 200-1100 nm. The main species observed by OES were Ar+, N2, N2+, and B+. The coatings on 1045 steel and posttreatment were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Also, were subjected to tribological tests to analyze wear resistance, using the Pin-on-Disk technique. The coatings on steel 1045 present remarkably better wear properties than the uncoated 1045 steel, being the sample post-treated at 4h that showed a lower wear rate.
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Yu, Rong Sheng, Hua Yan, Zhong Cheng Xu, Zhao Hui Liu, and Zi Di Gu. "Effect of the Content of Paraffin Microcapsule on the Thermal Performance of Infrared Camouflage Coatings." Advanced Materials Research 239-242 (May 2011): 441–44. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.441.

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As the phase change material, paraffin microcapsule thermal performance of infrared camouflage coatings were studied, With blank contrastive experiments and changing the content of paraffin microcapsule, it is studied the thermal performance of infrared camouflage coatings. This study has shown that there has a high performance of storing and retaining the caloric of the infrared camouflage coatings, with the temperature 7°C. The content of paraffin microcapsule has a great effect on the infrared thermal performance in coating, the higher content of paraffin microcapsule, the better thermal performance of storing and retaining the caloric. The difference of the temperature can reach the highest value at 7°C between 35% or 40% and 25% paraffin microcapsule in the coatings.
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Dastpak, Arman, Kirsi Yliniemi, Mariana de Oliveira Monteiro, Sarah Höhn, Sannakaisa Virtanen, Mari Lundström, and Benjamin Wilson. "From Waste to Valuable Resource: Lignin as a Sustainable Anti-Corrosion Coating." Coatings 8, no. 12 (December 8, 2018): 454. http://dx.doi.org/10.3390/coatings8120454.

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In this study, a waste of biorefinery—lignin—is investigated as an anticorrosion coating on stainless steel. Corrosion behavior of two lignin types (hardwood beech and softwood spruce) was studied by electrochemical measurements (linear sweep voltammetry, open circuit potential, potentiostatic polarization, cyclic potentiodynamic polarization, and electrochemical impedance measurements) during exposure to simulated body fluid (SBF) or phosphate buffer (PBS). Results from linear sweep voltammetry of lignin-coated samples, in particular, demonstrated a reduction in corrosion current density between 1 and 3 orders of magnitude cf. blank stainless steel. Furthermore, results from cross cut adhesion tests on lignin-coated samples demonstrated that the best possible adhesion (grade 0) of ISO 2409 standard was achieved for the investigated novel coatings. Such findings suggest that lignin materials could transform the field of organic coatings towards more sustainable alternatives by replacing non-renewable polymer coatings.
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Attia, Nour, Harby Ahmed, Dina Yehia, Mohamed Hassan, and Yassin Zaddin. "Novel synthesis of nanoparticles-based back coating flame-retardant materials for historic textile fabrics conservation." Journal of Industrial Textiles 46, no. 6 (July 28, 2016): 1379–92. http://dx.doi.org/10.1177/1528083715619957.

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Novel flame-retardant back coating layer for historic textile fabrics was developed. Silica nanoparticles originated from agriculture waste rice husk were prepared through one pot thermal method. The morphological and structure properties of nanoparticles were studied. The silica nanoparticles were further impregnated with organic borate producing flame-retardant composite. The obtained composite incorporated with the binder by mechanical mixing providing flame-retardant coating paste. The coating paste spread on the back surface of textile fabrics. Varied compositions of nanoparticles, binder and organic borate were studied in the back coating layer. The flammability, thermal stability and mechanical properties of the blank and treated samples of linen fabrics as an inner support to the historical textiles were investigated. Flame retardancy of the back-coated linen samples has improved achieved high class of flame-retardant textile fabrics of zero rate of burning compared to 80.3 mm/min for blank. The synergistic effect of flame retardancy between nanoparticles and organic borate was investigated. The tensile strength of the flame retardant fabrics was enhanced by 27% and elongation was improved. The effect of industrial aging on the flame retardancy and mechanical properties of flame-retardant back coating textiles was studied.
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Dissertations / Theses on the topic "Blank coating"

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Pallay, Krista Joy. "Surface Modifications to Mitigate Refractory Degradation in High-Temperature Black Liquor Gasifiers." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10488.

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Ceria (CeO2), chromia (Cr2O3), yttria-stabilized zirconia (Y2O3-ZrO2), and sodium cerium oxide (Na2CeO3) were used as barrier coatings on Ufala, an alumina-based ceramic refractory, to determine if they were effective at increasing the life of the refractory in a high-temperature black liquor gasification environment. The ceria, chromia, and yttria-stabilized zirconia coatings were applied at atmospheric pressure using a coating applicator at the Institute of Paper Science and Technology at the Georgia Institute of Technology. The sodium cerium oxide coatings in addition to the three other coating types were applied under atmospheric pressure at C3 International Technologies in Alpharetta, GA. The coated refractory, as well as a set of uncoated refractory used for baseline analysis, were tested using molten synthetic smelt at 1000C for 36 hours. Uncoated refractory samples were also tested for 12, 72, 120, and 168 hours in order to make a kinetic reaction rate determination. The refractory were analyzed using gravimetric and dimensional analysis, X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy to determine the severity of the physical changes that occurred after exposure to molten smelt. The data gathered from these experiments were not able to conclude that barrier coatings are sufficient to impede corrosion of the Ufala refractory material in molten smelt.
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Lanzon, Joseph, and kimg@deakin edu au. "EVALUATING LUBRICANTS IN SHEET METAL FORMING." Deakin University. Department of Science and Engineering, 1999. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20040428.095238.

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The sheet metal forming process basically involves the shaping of sheet metal of various thickness and material properties into the desired contours. This metal forming process has been extensively used by the automotive industry to manufacture both car panels and parts. Over the years numerous investigations have been conducted on various aspects of the manufacturing process with varied success. In recent years the requirements on the sheet metal forming industry have headed towards improved stability in the forming process while lowering environmental burdens. Therefore the overall aim of this research was to identify a technique for developing lubricant formulations that are insensitive to the sheet metal forming process. Due to the expense of running experiments on production presses and to improve time efficiency of the process the evaluation procedure was required to be performed in a laboratory. Preliminary investigations in the friction/lubricant system identified several laboratory tests capable of measuring lubricant performance and their interaction with process variables. However, little was found on the correlation between laboratory tests and production performance of lubricants. Therefore the focus of the research switched to identifying links between the performance of lubricants in a production environment and laboratory tests. To reduce the influence of external parameters all significant process variables were identified and included in the correlation study to ensure that lubricant formulations could be desensitised to all significant variables. The significant process variables were found to be sensitive to die position, for instance: contact pressure, blank coating of the strips and surface roughness of the dies were found significant for the flat areas of the die while no variables affected friction when polished drawbeads were used. The next phase was to identify the interaction between the significant variables and the main lubricant ingredient groups. Only the fatty material ingredient group (responsible for the formation of boundary lubricant regimes) was found to significantly influence friction with no interaction between the ingredient groups. The influence of varying this ingredient group was then investigated in a production part and compared to laboratory results. The correlation between production performance and laboratory tests was found to be test dependant. With both the Flat Face Friction test and the Drawbead Simulator unaffected by changes in the lubricant formulation, while the Flat Bottom Cup test showing similar results as the production trial. It is believed that the lack of correlation between the friction tests and the production performance of the lubricant is due to the absence of bulk plastic deformation of the strip. For this reason the Ohio State University (OSU) friction test was incorporated in the lubricant evaluation procedure along with a Flat Bottom Cup test. Finally, it is strongly believed that if the lubricant evaluation procedure highlighted in this research is followed then lubricant formulations can be developed confidently in the laboratory.
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Cakar, Ilknur. "Conductive Coating Materials." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607410/index.pdf.

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In this study, electrically conductive coating materials composed of epoxy resin and carbon black (CB) were prepared by applying two different mixing techniques (Grinding and Mechanical Mixing). The effect of carbon black addition, ultrasonication, mixing type and surface modification of carbon black on the morphologies, electrical and mechanical properties of the composites were investigated. According to test results, Grinding Method is much more efficient and for this method, percolation concentration was found as 2 vol %. The electrical resistivity value obtained at this composition is around 107 ohm.cm. Also, for the samples prepared by Grinding Method, the hardness increased by adding conductive filler, but the impact energy and adhesive strength decreased with increasing carbon black content. Ultrasonication was applied to the samples containing 2 vol % CB obtained by Grinding Method to reduce the electrical resistivity further. Three different ultrasonic mixing times were tried, however, no positive effect was observed on electrical and mechanical properties. Since the addition of carbon black has a negative effect on the processability of the mixture, it was aimed to obtain desired conductivity value at lower percolation concentration by modifying carbon black surface with different silane coupling agents and formamide. The best result in terms of electrical conductivity was obtained for the materials produced with formamide treated carbon black by Grinding Method. At 1 vol % concentration, the electrical resistivity was found as approximately 106 ohm.cm which is three orders smaller than the resistivity of materials prepared with untreated carbon black.
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Hopkins, Noel Paul. "Abradable coatings : from black art, to materials science." Thesis, Swansea University, 2007. https://cronfa.swan.ac.uk/Record/cronfa42844.

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Suck, squeeze, bang, blow! The efficiency and performance of a gas turbine engine relies on the ability to maintain high gas pressure ratios, throughout each stage of the compressor. To do this, engine manufacturers must minimise gas leakage over compressor blade and seal fin tips. Increasing the efficiency of the gas turbine engine is an area of enormous importance to engine manufacturers worldwide. The rewards are obvious when it is considered that a modest improvement of 0.5 to 1% to the Specific Fuel Consumption (SFC) can translate to huge savings on fuel costs. One way in which engine manufacturers are looking to do this is through the use of abradable seals, which are used to help seal the engine and reduce air leakage over blade tips. In an attempt to gain a fundamental understanding of abradable materials, this thesis discusses research carried out as part of an Engineering Doctorate. The research focuses on three key topic areas, identified as necessary for generating a robust understanding of the complete coating life. The research carried out within this EngD programme has helped to generate a fundamental understanding of abradable materials by focusing on three key topic areas: i) Development of Test Methodology ii) Definition of Performance Drivers iii) Implementation of Technology Within these topic areas programmes of work have been carried out, which aim to fill gaps in current knowledge and provide the knowledge and techniques for future coating development. Significant advances have been made in all aspects of abradable understanding and the knowledge generated is now being successfully implemented within the Rolls-Royce Abradable Strategy. As the demands from regulators and airlines for greater aero engine performance increase, the need for reliable and effective compressor sealing will become evermore critical. The knowledge and techniques developed within this EngD programme will enable further detailed understanding of the science of abradable materials.
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Jahan, F. "Characterization of molybdenum black coatings with reference to photothermal conversion of solar energy." Thesis, Brunel University, 1987. http://bura.brunel.ac.uk/handle/2438/5393.

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A study of thermal, structural, electrical and optical characteristics of molybdenum black surface coatings on various substrates has been made. The suitability of these coatings for use as selective absorbers for solar collector applications has been assessed. Molybdenum black (Mo black) coatings were prepared by electrodeposition (on aluminium) and a chemcial conversion method (on zinc and electroplated cobalt on nickel plated copper substrates). The solar absorptancer (αs) and thermal emittances (εth) of the coatings were determined from room temperature spectral reflectance measurements in the solar (0.3 to 2.5μm) and infrared regions (2.5 to 50 μm) respectively. The effect of different preparation parameters and substrate pretreatments on the spectral selectivity has been investigated in order to optimize the thermal performance. The spectral selectivity is related to the Mo-black coating thickness and surface roughness together with the microstructure, of the substrate and the intermediate layer. Dip coatings on polished zinc have significant selectivity (αs/ εth = 8.4 when αs = 0.76). The absorptance of the dip coatings is increased to 0.87 with εth = 0.13 by chemical etching of zinc prior to coating deposition. For coatings on electroplated cobalt on nickel plated copper (cobalt (NC) substrate), an absorptance as high as 0.94 has been obtained with an emittance value 0.3. By using an addition agent in the plating solution of cobalt the high emittance can be reduced to 0.1 with αs = 0.91 giving a coating with a relatively high efficiency (82.5%) for photo-thermal energy conversion. A study of the surface composition and microstructure of the coatings has been made using scanning and transmission electron microscopy together with electron diffraction, X-ray diffraction and X-ray photoelectron spectroscopy. The structural investigations indicate that Mo-black coatings contain polycrystals of orthorhombic Mo4O11 with a small proportion of Ni(OH)2. Presence of water and also Mo4O11 in the coatings are evident from IR spectroscopy study. The bandgap of the coating has been determined from optical transmission spectra (1.66 eV) and also from reflectance spectra (0.85 eV). The discrepancy between these two values has been discussed. The refractive indices of the coatings have also been estimated. The band gaps and refractive indices are found to be related to the spectral selectivity of the coatings. The durability test of the coatings shows that the coatings on etched zinc are more resistant to heat treatment than the coatings on unetched zinc. The coatings on cobalt (NC) substrates also show good stability for relatively short periods at temperatures ~400ºC. A study of the electrical properties of Mo-black coatings suggests that at electrical field strengths (greater than 106v/m the dominant conduction process is of the Poole-Frenkel type. The activation energy of the conduction process has been estimated to be -0.56 eV at higher temperatures. The effect of heat treatment on the electrical properties of the coatings has been examined. The dielectric constant of Mo-black has been estimated from A. C. measurements. At high frequency (20 kHz) the value of the dielectric constant is about 4.0.
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Moosa, Naina Mohamed Lebbai. "Improvement of interfacial adhesion in plastic packages--dimples, metallic coatings and black oxide /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?MECH%202002%20MOOSA.

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Sjöberg, Josefin. "Validation and development of an electroplating process to deposit a black chromium coating from a trivalent chromium electrolyte." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302965.

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SAAB AB coats a part of their magnetron with black chromium to enhance its ability to radiate thermal radiation. Today an electrodeposition process that has hexavalent chromium as its main component is used, but hexavalent chromium is carcinogenic and will be prohibited. This project examines if an electrolyte based on trivalent chromium can result in a black chromium coating. The project was divided into in four experimental parts: investigation of the adhesion on copper, the effect on color if copper was added to the electrolyte and investigation of the process parameters with and without cooling of the electrolyte. It was concluded that a black chromium coating can be deposited from a trivalent electrolyte. Heating the sample after plating and addition of iron or copper in the electrolyte darkens the color but addition of copper can not produce a coating on copper substrates with good adhesion. To examine how the coating thickness and emissivity vary with the current density, electrolyte temperature and plating time, the coatings thickness and emissivity were measured for different settings. It was shown that the coating thickness increased with plating time and current density until a critical value was reached and the coating started to peel off. No correlation between the emissivity and process parameters could be shown. It is suggested that further experiment are conducted to investigate if a variation in pH- value effects the emissivity. Based on the results and conclusions it is recommended that the addition of iron to the electrolyte is further examined.
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Pham, Nhu Thao Lisa. "Structural characterization of spider coating petide [i.e., peptide] 1 and 2 of the black widow spider, Latrodectus hesperus." Scholarly Commons, 2013. https://scholarlycommons.pacific.edu/uop_etds/852.

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Spider silk is one of the most versatile material.s in nature with great mechanical properties, exceeding some of the best man made materials. Native and synthetically produced silk has been used in a wide array of applications throughout the history of mankind including nets, bandages and cloths. It is recognized that spider silk can be a suitable replacement material for many existing materials such as ropes, body armor, parachutes and biodegradable bottles - all of which could show cost and environmental 4 benefits relative to other currently used man made materials. An added advantage to these types of applications is the potential for the products to have intrinsic antimicrobial activity. Studies have demonstrated a level of antimicrobial activity in native silk, a property that may have evolved in order to resist microbial decomposition, to protect developing eggs, and to resist decomposition or destruction by predators, parasites, or fluctuations in the environment. In this study, the novel aqueous glue coating peptides found on the silk fiber of the black widow spider, spider coating peptide 1 and 2, were investigated. Using circular dichroism, it was determined that SCP-1 and SCP-2 display predominantly alpha-helical secondary structures. In temperature gradient studies, SCP-1 is structurally stable at high temperatures while SCP-2 unfolded and lost its alpha-helical structure. The two peptides remained structurally stable both in an acidic and basic environment. This study was the first to characterize the secondary structure of the peptides found coating various silk fibers in Latrodectus hesperus, the black widow spider. The function of the SCPs is unknown but has-been hypothesized to potentially have antimicrobial properties. We investigated this role and found no significant antibacterial activity of the peptides against Escherichia coli and Bacillus subtitlis in growth studies. This study is the first to investigate the functional role of SCPs.
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Pham, Nhu Thao Lisa. "Structural characterization of spider coating petide [i.e., peptide] 1 and 2 of the black widow spider, Latrodectus hesperus : a thesis." Scholarly Commons, 2001. https://scholarlycommons.pacific.edu/uop_etds/852.

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Spider silk is one of the most versatile material.s in nature with great mechanical properties, exceeding some of the best man made materials. Native and synthetically produced silk has been used in a wide array of applications throughout the history of mankind including nets, bandages and cloths. It is recognized that spider silk can be a suitable replacement material for many existing materials such as ropes, body armor, parachutes and biodegradable bottles - all of which could show cost and environmental 4 benefits relative to other currently used man made materials. An added advantage to these types of applications is the potential for the products to have intrinsic antimicrobial activity. Studies have demonstrated a level of antimicrobial activity in native silk, a property that may have evolved in order to resist microbial decomposition, to protect developing eggs, and to resist decomposition or destruction by predators, parasites, or fluctuations in the environment. In this study, the novel aqueous glue coating peptides found on the silk fiber of the black widow spider, spider coating peptide 1 and 2, were investigated. Using circular dichroism, it was determined that SCP-1 and SCP-2 display predominantly alpha-helical secondary structures. In temperature gradient studies, SCP-1 is structurally stable at high temperatures while SCP-2 unfolded and lost its alpha-helical structure. The two peptides remained structurally stable both in an acidic and basic environment. This study was the first to characterize the secondary structure of the peptides found coating various silk fibers in Latrodectus hesperus, the black widow spider. The function of the SCPs is unknown but has-been hypothesized to potentially have antimicrobial properties. We investigated this role and found no significant antibacterial activity of the peptides against Escherichia coli and Bacillus subtitlis in growth studies. This study is the first to investigate the functional role of SCPs.
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Cortright, Emily Celia. "Microfluidics of DNA Suspensions." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1242236618.

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Books on the topic "Blank coating"

1

Safi, Iyad. The photoelectrochemical response of molybdenum black coatings. Uxbridge: Brunel University, 1985.

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Jahan, Ferdouse. Characterization of molybdenum black coatings with reference to photothermal conversion of solar energy. Uxbridge: Brunel University, 1987.

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Yousif, Kamil Mansoor. Studies of degradation modes of molybdenum black coatings in relation to their use as solar selective absorbers. Uxbridge: Brunel University, 1992.

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Center, Ames Research, ed. Formulation of Ames 24E2 IR-black coating. Moffett Field, Calif: National Aeronautics and Space Administration, Ames Research Center, 1991.

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Center, Ames Research, ed. Cryo-mechanical tests of Ames 24E2 IR-black coating. Moffett Field, Calif: National Aeronautics and Space Administration, Ames Research Center, 1991.

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Center, Ames Research, ed. Cryo-mechanical tests of Ames 24E2 IR-black coating. Moffett Field, Calif: National Aeronautics and Space Administration, Ames Research Center, 1991.

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Center, Ames Research, ed. Cryo-mechanical tests of Ames 24E2 IR-black coating. Moffett Field, Calif: National Aeronautics and Space Administration, Ames Research Center, 1991.

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Lemmer, Tom. The Complete Guide to Finishing Walls & Ceilings: Includes Plaster, Skim-coating and Texture Ceiling Finishes (Black & Decker Home Improvement Library). Creative Publishing international, 2006.

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V, Taranik James, and United States. National Aeronautics and Space Administration., eds. Nature and origin of secondary mineral coatings on volcanic rocks of the Black Mountain, Stonewall Mountain and Kane Springs Wash volcanic centers, southern Nevada. [Washington, DC: National Aeronautics and Space Administration, 1989.

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David, Spatz, Hsu L. C. 1931-, and United States. National Aeronautics and Space Administration, eds. Nature and origin of mineral coatings on volcanic rocks of the Black Mountan [i.e. Mountain], Stonewall Mountain, and Kane Springs Wash Volcanic Centers, southern Nevada: Semiannual progress report for period July, 1987 - January 1988. [Washington, DC: National Aeronautics and Space Administration, 1988.

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Book chapters on the topic "Blank coating"

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Grigorevskiy, A. V., L. V. Kiseleva, and V. N. Strapolova. "Complex Investigations of New Black Thermal Control Coatings." In Protection of Materials and Structures From the Space Environment, 177–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-30229-9_16.

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Javadov, N. F., T. I. Nazimov, E. G. Ismailov, Dmitry V. Schur, Svetlana Yu Zaginaichenko, A. P. Pomytkin, R. S. Aliev, R. S. Suleimanov, T. Nejat Veziroğlu, and Ayfer Veziroğlu. "Polyether Urethane Nanocomposition as a Multi-functional Nanostructured Polymeric Coating for the Future." In Black Sea Energy Resource Development and Hydrogen Energy Problems, 229–36. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-6152-0_20.

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Isac, Luminita, Ramona Panait, Alexandru Enesca, Cristina Bogatu, Dana Perniu, and Anca Duta. "Development of Black and Red Absorber Coatings for Solar Thermal Collectors." In Springer Proceedings in Energy, 263–82. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63215-5_20.

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Haddad, Faouzi, Mustapha Hatti, R. Zaamoum, and Khadidja Rahmoun. "Photo-Thermal Study of the Optical Properties of Multi-layer Coatings Based on Black Pigmented Coatings/SiO2 Applied for Solar Absorber." In Artificial Intelligence in Renewable Energetic Systems, 133–42. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73192-6_14.

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Zhang, Wei, Richard Blackburn, and Abbas Dehghani. "Effect of Silica on the Electrical Properties of Epoxy of Phenolic Resin/Carbon Black/Silica Composite Coating." In Materials Science Forum, 1525–30. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.1525.

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Pompea, S. M., and S. H. McCall. "OPTICAL COATINGS | Optical Black Surfaces." In Encyclopedia of Modern Optics, 349–60. Elsevier, 2005. http://dx.doi.org/10.1016/b0-12-369395-0/00872-1.

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Nakajima, Tomohiko, and Tetsuo Tsuchiya. "Black Titania Coatings: Fabrication Process and Photoelectrochemical/Photocatalytic Properties." In Black TiO2 Nanomaterials for Energy Applications, 153–87. WORLD SCIENTIFIC (EUROPE), 2016. http://dx.doi.org/10.1142/9781786341662_0007.

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"A facile cost-effective method for preparing superhydrophobic carbon black coating on Al substrate." In Civil, Architecture and Environmental Engineering, 600–603. CRC Press, 2017. http://dx.doi.org/10.1201/9781315226187-105.

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Broughton, Chad. "Boom Days in Appliance City." In Boom, Bust, Exodus. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780199765614.003.0004.

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Packing Insulation Was Mike Patrick’s first job at Midwest Manufacturing. He was one of 300 men, mostly young, hired in January 1959 to help Admiral, a Chicago-based company that owned the Galesburg factory, meet America’s seemingly insatiable postwar appetite for appliances. He had failed an eye test during the nurse’s exam at the factory and had to get glasses before he started. Patrick had suspected he needed glasses because he always had trouble see­ing the chalkboard from the back of the room in high school. But because he was an athlete, he didn’t want to tie glasses around his head during basketball games. New hires got the nastiest, most grueling jobs, and stuffing insulation— which was like prickly cotton candy—into bare metal cabinets was one of them. The cabinets came from the metal-cutting area of the factory known as the “black line,” because the steel, darkened with oil, hadn’t yet been painted. The black line was the birthplace of these early Admiral refrigerators. Flatbed semis unloaded massive rolls of thick steel from Chicago—the plant used 10 rolls a day, 50 million pounds a year—that cutters and folding machines would shape into five sides. Gun welders then joined what would become the back, the two sides, and the top and bottom of the refrigerator. They left the door for later. The fused steel cabinet dangled from an overhead conveyor as it rode to the paint shop to be cleaned of its oily residue and painted. It would continue on the conveyor to a cabinet bank, where the empty cabinets gathered until they were needed on the line. When the scheduler called for them, men would slide the cabinets to the line across a concrete floor, which had been treated with a smooth, protective coating to prevent damage. A young man then spread scalding, gooey tar into the corners and up and down the creases of the bare metal cabinets. He shot the tar out of a pistol-gripped nozzle attached to a long canvas hose that he snaked in and around the metal shell.
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Skrobala, Viktor, and Sofiya Marutyak. "PECULIARITIES OF THE TERRITORY OF THE CITY OF LVIV (UKRAINE) AND THEIR INFLUENCE ON THE HYDROLOGICAL REGIME AND EROSION PROCESSES." In European vector of development of the modern scientific researches. Publishing House “Baltija Publishing”, 2021. http://dx.doi.org/10.30525/978-9934-26-077-3-28.

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The object of research is the territory of the city of Lviv (Ukraine). Lviv (geographical coordinates: 49N50, 24E00) is the largest city in Western Ukraine, with a population of over 720,000 inhabitants. The city is located in the western part of the Volyn-Podilska Upland, on the line of the Main European Ridge of the Baltic and Black Sea basins. Subject of research is relief parameters (maximum, average and minimum heights, vertical dismemberment and steepness of the surface) and land use characteristics (building intensity, phytocenotic cover). The purpose of research is to study the features of the territory of Lviv from the standpoint of influence on the hydrological regime and erosion processes. Methodology. Peculiarities of the territory of Lviv were studied by processing topographic maps using aerial photography materials and route surveys. Morphometric analysis of the relief was performed on topographic maps of scale 1: 10000 by dividing the map into elementary squares with an area of 0.25 km2. The research covers an area of 100.25 km2 (401 elementary squares). Within the elementary squares, the maximum, average and minimum heights of the territory, the depth of local erosion bases, the average surface steepness, the intensity and nature of construction, and the features of vegetation were determined. Results. The territory of Lviv is characterized by a variety of relief conditions and related nature of surface use. On the basis of morphometric maps of maximum and minimum heights, vertical dismemberment and steepness of the surface, we can distinguish the flat peripheral part of the city and the middle band of elevations. The asymmetry of the territory of Lviv in relation to the watershed causes various potential dangers of erosion processes and related unproductive moisture losses. The intensity of construction increases from the periphery to the center, with the exception of modern multi-storey buildings of the Sykhiv massif and industrial areas in the western part of the city. Low specific weight of waterproof coatings is characterized by the eastern and northern parts of the city with a complex relief. The largest amount of greenery is concentrated in the eastern part of the city (Vysokyi Zamok Park, Shevchenkivskyi grove, Pohulyanka Forest Park, Lychakiv), where surfaces with maximum relative heights predominate. The great variety of the underlying surface on the territory of Lviv causes different conditions for the formation of surface runoff and associated unproductive moisture consumption. The high potential danger of erosion processes is primarily noted by the structural-denudation level of Roztochia, which is characterized by the highest values of surface steepness. Complex relief conditions, intensive anthropogenic impact determine the need for anti-erosion organization of the city and measures aimed at optimizing hydrological processes. Scientific novelty. One of the criteria that characterizes the degree of landscape transformation within the city is the intensity of construction, which is determined by the proportion of watertight areas in the overall balance of the territory. Peculiarities of spatial arrangement of elementary plots with different intensity of construction in combination with relief parameters and land use scheme are determined. Practical significance. Knowing the parameters of the terrain and the peculiarities of land use, it is possible to determine the potential intensity of erosion processes in the territory of Lviv, to assess the level of anthropogenic changes in the hydrological regime.
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Conference papers on the topic "Blank coating"

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Tsuji, Y., S. Yoshihara, S. Tsuda, Y. Iriyama, and Y. Nakano. "Effect of DLC Coating on Limiting Drawing Ratio of AZ31 Magnesium Alloy Sheet." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10947.

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Magnesium alloys have several advantages that make them attractive for use in structural applications such as a superlight weight, high specific strength, ease of recycling and electromagnetic shielding capability. On the other hand, several disadvantages are associated with manufacturing using magnesium alloys such as the fact that it is practically impossible to apply conventional metal-forming techniques at room temperature without producing defects. Much effort, therefore, has recently been applied to improving the formability of magnesium-based alloys in order that they may realize their full potential. In this study, the methodology of coating the surface of a magnesium alloy with a diamond-like carbon (DLC) coating to increase the surface lubrication performance and for achieve deep drawability is discussed. The DLC acts as a lubricant during the forming process, thus reducing the deformation of the workpieces. Friction tests and deep-drawing tests were carried out to estimate the effect of the DLC coating by the formability of the magnesium alloy. We have compared the properties of non-lubricated blanks with those lubricated a DLC coating and the lubricants and MoS2. The coefficient of friction of the DLC-coated blank was approximately 0.16. Those of the non-lubricated blank and the blanks coated with GM100 and MoS2 were 0.41, 0.26, and 0.17 respectively. Thus, the DLC coating provides a similar or superior level of lubrication when compared with a conventional lubricant. The deep-drawing test was performed to obtain the limiting drawing ratio (LDR). For the DLC-coated blank, deep-drawing was possible at drawing ratio (DR) 2.2. On the other hand, the non-lubricated blank fractured at DR2.0. In the case of GM100 and MoS2, deep-drawing was successful at DR2.2 and DR2.3, respectively. In both friction and deep-drawing tests, the performance of DLC-coated workpieces was compared with that of workpieces coated with the conventional lubricants. The deep-drawing tests were carried out at 200 °C, and the formability of each blank was measured. It was concluded that the use of DLC-coated blanks produces an improvement in the formability of magnesium alloys compared with the use of conventional lubrication techniques.
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Rasera, J. N., K. J. Daun, and M. D’Souza. "Direct Contact Heating for Hot Forming Die Quenching." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38373.

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Most hot forming lines use slow, energy-intensive roller hearth furnaces to austenitize boron steel “blanks”. This paper describes an alternative heating technology in which blanks are austenitized by bringing them into contact with a hot monolith. The austenitizing temperature was reached in less than 30 seconds, and subsequent material characterization tests on oil-quenched blanks confirm that a fully martensitic structure is formed, and that the hardness and yield strength are comparable to furnace-treated samples. An Al-Si coating is typically used to prevent the oxidation and decarburization of the blanks within the furnace; preliminary tests found that the coating adheres to the monolith, impeding blank transfer and damaging the Al-Si-Fe ternary coating. Five interchangeable striking surfaces were assessed to see if they were less prone to adhering to the molten Al-Si coating.
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Cora, Ömer Necati, Muammer Koç, Peter J. Blau, and Kunio Namiki. "Investigations on the Effect of Coating Material and Method on Die Wear in Stamping of Advanced High Strength Steels." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62043.

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Despite the advantages of advanced high strength steels (AHSS), their stamping into functional lightweight parts demands prolonged die life, which necessitates the use of alternative substrates, coating materials, and/or surface conditioning to minimize and delay the die wear. In order to avoid frequent die replacement and surface quality problems on the stamped parts, the metalworking industry has been investigating various approaches such as reducing/refining the carbide particles, adding alloying elements, and elevating the hardness and toughness values for both substrate materials and coatings. The objective of this work was to investigate the effects of different coatings on the wear behavior of a some selected tool steel materials (die sample of interest) against two different AHSS sheet blanks through a cylinder-on-flat type reciprocating test method. After wear tests, both die sample and sheet blank surface were microscopically examined. Wear resistance of the slider was quantified from wear scar width measurements. Results showed that TD and CVD coated die samples performed better than the two other PVD coated samples.
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Twynstra, M. G., K. J. Daun, E. Caron, N. Adam, and D. Womack. "Modelling and Optimization of a Batch Furnace for Hot Stamping." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17248.

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Non-uniform heating during the austenization stage of hot-stamping can lead to inhomogeneous mechanical properties, coating thickness variations, and residual stresses in the stamped components. This paper presents a heat transfer model of an electrically-powered batch austenization furnace, with the objective of diagnosing and correcting factors that cause non-uniform blank heating. Radiation view factors are calculated with the Monte Carlo method. Convection with the furnace air and conduction through the blank and furnace door is also incorporated into a transient global domain energy balance. The model incorporates temperature- and phase-dependent radiative and thermophysical properties of the steel blanks and ceramic insulation of the furnace walls. The heat transfer model is validated with data obtained from instrumented blanks in an actual production cycle. The model is then used to optimize heater settings for the existing furnace using simulated annealing.
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Jhajj, K. S., E. F. J. R. Caron, N. L. Chester, and K. J. Daun. "Accuracy of Thermocouples in Transient Surface Temperature Measurements Dominated by Radiant Heating." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38243.

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In hot forming die quenching, furnaces are used to austenitize steel blanks and transform an Al-Si layer into a permanent Al-Si-Fe coating. Application of a simplified heat transfer model to thermocouple measurements on steel blanks heated in industrial furnaces showed specific heats that varied with blank thicknesses, raising questions about the accuracy of these measurements. A detailed experimental study on a lab scale muffle furnace shows that natural convection and variations in the surrounding temperatures has a strong influence on the inferred specific heat. An improved heat transfer model is used to qualitatively assess how austenitization influences the effective specific heat.
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Chester, N. L., M. A. Wells, and K. J. Daun. "Experimental Measurements of Spectral Emissivity of Al-Si Coated Steel Blanks Undergoing Rapid Heating." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38375.

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Detailed knowledge of the blank temperature history is essential in hot forming die quenching, in order to ensure adequate austenitization of the steel and transformation of a protective Al-Si later into a permanent Al-Si-Fe coating. This, in turn, requires detailed knowledge of the blank emissivity, which is complicated by the fact that the coating undergoes rapid changes in surface chemistry, and surface roughness as it is heated. This paper spectral emissivity of Usibor® 1500 P as it undergoes heating. Samples were heated in a DSI Gleeble® 3500 under prescribed heating rates. The spectral emissivity was measured ex situ using an FTIR reflectometer, and in situ with a NIR-spectrometer. While the trends agree with manufacturer data in the cases of the as-received and final furnace heating temperature of 900°C, the spectral emissivity changes at a faster rate than previously reported.
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Hussain, G., and L. Gao. "Fundamental Studies on Incremental Forming of Titanium Sheet-Metal." In ASME 2006 International Manufacturing Science and Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/msec2006-21015.

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Several aspects of Incremental Forming, an innovative sheet-metal-forming process, were studied. Firstly, an optimal combination of tool and lubricant was explored to form the TA1 (commercial Titanium) sheet-metal parts. Secondly, the effect of the tool diameter on the surface texture of a part was investigated. In addition to this, the influence of the tool diameter on in-plane strain distribution and thickness distribution along a part was also studied. Lastly, experiments were conducted in order to investigate the influence of half-apex angle on thickness distribution along a part to be formed. It has been concluded that the surface coating of sheet-blanks is essential to form the TA1 parts with good surface textures, and the dispersion of MoS2 powder in grease should be rubbed on the coated surface of the sheet-blank to provide lubrication between the tool tip (tip of a surface-hardened HSS tool) and the sheet-blank surface. Furthermore, the tool diameter has no effect on the texture of a formed surface, the deformation mode, and the in-plane strain distribution on a part. It has also been found that the tool diameter does not influence the thickness distribution along a part; rather this is governed by the Sine of half-apex angle of the part to be formed.
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Landgrebe, Dirk, Matthias Demmler, Andre Albert, Frank Schieck, and Martin Weber. "Technology Development and Tool Concepts for High-Temperature Forming of Titanium." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86660.

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Due to its excellent material properties, titanium is an important structural material for several application fields in the aerospace industry, the chemical industry, medical engineering or marine technologies. Especially its excellent weight-strength ratio, high-temperature strength corrosion resistance and not least its biocompatibility enables a wide field of special applications. These properties can be improved by alloying of other chemical elements. Despite good availability of resources and moderate world market prices, there is only a limited application range for titanium. Main reasons comprise technological problems in manufacturing processes, particularly related to establish forming technologies such as deep drawing or hydroforming. The forming tool is of significant importance in forming technologies. Beside the function of shape storage the tool must provide the essential forming parameters such as mechanical functions (e.g. blank holder, sealing etc.), but also temperature and tribology. Especially the tribology, also related to forming temperatures, is very critical during titanium forming due to a distinctive tendency of adhesion. For this reason, a high number of titanium components are manufactured by milling. Parts made by forming of basically thin blank, show only low complexity. More complex components are made by welding of simple shaped parts. Thus, large-series manufacturing of titanium components is limited due to the extensive production cost. By describing three examples, this paper shows possibilities and challenges in manufacturing of titanium components based on sheet metals. Beside the process parameters, a special focus of the investigations lies on the coating of forming tools. Example one is cold forming of thin titanium blanks to speaker cones. The second example demonstrates superplastic forming of a medical application, and finally the third example consists of hot gas forming of a titanium exhaust manifold. The investigations have shown that based on optimized technological parameters in combination with new tool coatings, the manufacturing of complex sheet metal based titanium applications is applicable for large-series production.
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Zhang, Xiuping, Lei Li, Yaozhao Mu, Yanxiang Xie, Jun Dai, and Jing Shi. "Enhancing Conductivity and Corrosion Resistance by Organic Coatings on AZ31 Magnesium Alloy Treated by Micro-Arc Oxidation." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2894.

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Abstract In this study, an organic coating, in combination of a micro-arc oxidation ceramic layer, was prepared on the surface of a magnesium alloy (AZ31) to achieve both functions of corrosion resistance and electrical conductivity. By using carbon black as conductive particles and epoxy resin as matrix, organic coatings of various weight fractions were applied on the AZ31 surface treated by micro-arc oxidation through adjusting the contents of the conductive particles and non-conductive matrix. Electrical conductivity and corrosion resistance of organic coatings were measured. The results show that the organic coatings can improve the electrical conductivity of the AZ31 material treated by micro-arc oxidation, and the conductivity changes with the ratio between the carbon black particles and non-conductive matrix. The smallest resistance value of the organic coatings reached 130Ω. Also, the organic coating can further improve the corrosion resistance of the AZ31 material. The electrochemical corrosion tests show that the corrosion potential of the AZ31 material with composite coatings was at least 0.6V higher than that of AZ31 only with micro-arc oxidation treatment.
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Kılınç, T. Oytun, K. Berk Sönmez, İ. Ahmet Yüksel, and Sinem Ön Aktan. "Influences of sensor protective coating on laser energy calibration results." In 19th International Congress of Metrology (CIM2019), edited by Sandrine Gazal. Les Ulis, France: EDP Sciences, 2019. http://dx.doi.org/10.1051/metrology/201929001.

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Improving laser energy measurement is a challenging task. Pyroelectric crystalline energy sensors used in laser energy measurements have a working principle that absorbs the heat of incoming light. Therefore, it is very important to measure the heat transfer in the incoming laser beam with maximum efficiency. The condition of the black sensor coating used to maximize this efficiency plays a leading role in the measurements. By means of laser energy sensor calibration measuring setup, the energy of the pulsed laser source at a wavelength of 1064 nm and a frequency of 20 Hz was measured with damaged and undamaged black sensor coatings. The present study may provide useful guidance into the understanding of black coatings of the detectors to use in laser energy calibrations.
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Reports on the topic "Blank coating"

1

Bambha, Ray, Mark A. Dansson, Paul E. Schrader, and Hope A. Michelsen. Effects of volatile coatings on the morphology and optical detection of combustion-generated black carbon particles. Office of Scientific and Technical Information (OSTI), September 2013. http://dx.doi.org/10.2172/1096459.

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