Relevant bibliographies by topics / Carbides Thermal properties

Academic literature on the topic 'Carbides Thermal properties'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Carbides Thermal properties"

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Tarraste, Marek, Jakob Kübarsepp, Arvo Mere, Kristjan Juhani, Märt Kolnes, and Mart Viljus. "Ultrafine Cemented Carbides with Cobalt and Iron Binders Prepared via Reactive In Situ Sintering." Solid State Phenomena 320 (June 30, 2021): 176–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.320.176.

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Reactive sintering of cemented carbides involves mechanical and thermal activation of precursor elemental powders, followed by in-situ synthesis of tungsten carbide. This approach promotes formation of ultrafine microstructure favored in many cemented carbide applications. Our study focuses on the effect of mechanical activation (high-energy milling) on the properties of powder and following thermal activation (sintering) on the microstructure characteristics and phase composition. Reactive sintering proved effective – an ultrafine grained microstructure of cemented carbides with Co and Fe binders was achieved. Formation of tungsten carbide grains was complete at low temperature during reactive spark plasma sintering, resulting in textured microstructure with anisotropic grain formation and growth.
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Hadi, Aseel, Ahmed Hashim Ah-yasari, and Dalal Hassan. "Fabrication of new ceramics nanocomposites for solar energy storage and release." Bulletin of Electrical Engineering and Informatics 9, no. 1 (February 1, 2020): 83–86. http://dx.doi.org/10.11591/eei.v9i1.1323.

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The carbides nanostructures have huge applications in renewable energy fields such as the saving of solar energy and release which attributed to the good their properties (thermal, electrical, mechanical, optical and chemical). So, in this paper, the solar energy storage and release of carbides nanoparticles/water for building heating and cooling applications have been investigated with different concentrations of metals carbides nanoparticles (tantalum carbide-silicon carbide). The results showed that the melting and solidification times for thermal energy storage and release decrease with an increase (TaC-SiC) nanoparticles concentrations. From the obtained results, the TaC/SiC nanostructures/ water nano-system are considered as promising materials for solar energy storage and release with high efficiency and high gain (more than 50% compare with the water). Also, the TaC/SiC may be used for heating and cooling fields with good performance and high gain.
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Korobov, Yury, Yulia Khudorozhkova, Holger Hillig, Alexander Vopneruk, Aleksandr Kotelnikov, Sergey Burov, Prabu Balu, Alexey Makarov, and Alexey Chernov. "The Effect of Thickness on the Properties of Laser-Deposited NiBSi-WC Coating on a Cu-Cr-Zr Substrate." Photonics 6, no. 4 (December 13, 2019): 127. http://dx.doi.org/10.3390/photonics6040127.

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Ni/60WC coatings on copper substrate were placed via laser deposition (LD). A structural study was conducted using electron microscopy and a microhardness evaluation. Two body abrasive wear tests were conducted with a pin-on-plate reciprocating technique. A tool steel X12MF GOST 5960 (C-Cr-Mo-V 1.6-12-0.5-0.2) with a hardness of 63 HRC was used as a counterpart. The following results were obtained: Precipitation of the secondary carbides takes place in the thicker layers. Their hardness is lower than that of the primary carbides in the deposition (2425 HV vs. 2757 HV) because they mix with the matrix material. In the thin layers, precipitation is restricted due to a higher cooling rate. For both LD coatings, the carbide’s hardness increases compared to the initial mono-tungsten carbide (WC)-containing powder (2756 HV vs. 2200 HV). Such a high level of microhardness reflects the combined influence of a low level of thermal destruction of carbides during laser deposition and the formation of a boride-strengthening phase from the matrix powder. The thicker layer showed a higher wear resistance; weight loss was 20% lower. The changes in the thickness of the laser deposited Ni-WC coating altered its structure and wear resistance.
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Arizmendi-Morquecho, Ana, Araceli Campa-Castilla, C. Leyva-Porras, Josué Almicar Aguilar Martinez, Gregorio Vargas Gutiérrez, Karla Judith Moreno Bello, and L. López López. "Microstructural Characterization and Wear Properties of Fe-Based Amorphous-Crystalline Coating Deposited by Twin Wire Arc Spraying." Advances in Materials Science and Engineering 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/836739.

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Twin wire arc spraying (TWAS) was used to produce an amorphous crystalline Fe-based coating on AISI 1018 steel substrate using a commercial powder (140MXC) in order to improve microhardness and wear properties. The microstructures of coating were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) as well as the powder precursor. Analysis in the coating showed the formation of an amorphous matrix with boron and tungsten carbides randomly dispersed. At high amplifications were identified boron carbides at interface boron carbide/amorphous matrix by TEM. This kind of carbides growth can be attributed to partial crystallization by heterogeneous nucleation. These interfaces have not been reported in the literature by thermal spraying process. The measurements of average microhardness on amorphous matrix and boron carbides were 9.1 and 23.85 GPa, respectively. By contrast, the microhardness values of unmelted boron carbide in the amorphous phase were higher than in the substrate, approaching 2.14 GPa. The relative wear resistance of coating was 5.6 times that of substrate. These results indicate that the twin wire arc spraying is a promising technique to prepare amorphous crystalline coatings.
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Saydaxmedov, Ravshan, and Kutpnisa Kadirbekova. "Study of the composition and properties of vacuum coatings based on titanium carbide." E3S Web of Conferences 264 (2021): 05023. http://dx.doi.org/10.1051/e3sconf/202126405023.

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Carbide cutting tools are used for machining of machine parts made of complex alloyed materials. Application of protective composite nanostructured coatings on carbide cutting tools allows increasing the service life of cutting tools several times. The coating on their base protects the cobalt binding of carbide alloys. The low thermal conductivity of the composite nanostructured titanium carbide coating means that the heat generated when cutting workpieces is mostly transferred to the chips so that the tool does not become overheated. This is important when machining difficult alloyed, hard-to-machine, ductile materials for which the temperature at the contact zone of the cutting edge and the machined material reaches up to 900°C. The adhesive interaction of the composite nanostructured coating with the substrate material is of no small importance in selecting the coating composition. From this point of view, carbide titanium coatings have good compatibility with carbide cutting tools. Along with this, the study of ion-plasma composite nanostructured coatings based on TiC carbides is relevant. The study results of the composition and properties of vacuum composite nanostructured coatings based on titanium carbides obtained by the ion-plasma method are presented. Studies of the chemical composition, the electronic and atomic structure of composite nanostructured coatings based on Ti carbides were carried out using the HREELS, XPS, and AES method and based on experimental studies of composite nanostructured TiC coatings, the p – T – x diagrams for TiC were refined.
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Wyzga, Piotr, Lucyna Jaworska, Piotr Putyra, Marcin Podsiadlo, and Jolanta Cyboron. "Characterization of Metal-Like Carbides-Graphene Composite Prepared by SPS Method." Key Engineering Materials 655 (July 2015): 87–91. http://dx.doi.org/10.4028/www.scientific.net/kem.655.87.

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High hardness, good thermal and electrical conductivity make carbides technologically important materials. The high melting temperature and low coefficients of self-diffusion make it difficult to obtain full dense material. In this paper the results of Spark Plasma Sintering (SPS) of transition metal carbides: NbC, TaC, TiC, ZrC, VC with the addition of graphene 10-20 nm x 14 microns in an amount of 2.5 mass % are presented. Powders were mixed in isopropyl alcohol in a planetary ball mill for 1h. The sintering processes was carried out at 2200°C at two different times: 5 and 30 min. Microstructure of the samples was analyzed using scanning electron microscopy. The measurements of density, Young's modulus hardness and electrical properties were carried out, also. The best properties were obtained for titanium carbide powder, sintered for 30 min. The most significant density increase of the sintered carbide–graphene composite by about 5.3% (depending on increasing sintering duration) was obtained for niobium carbide, while the smallest densities change for zirconium carbide.
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Vornberger, Anne, Tobias Picker, Johannes Pötschke, Mathias Herrmann, Berend Denkena, Alexander Krödel, and Alexander Michaelis. "Influence of Cemented Carbide Composition on Cutting Temperatures and Corresponding Hot Hardnesses." Materials 13, no. 20 (October 14, 2020): 4571. http://dx.doi.org/10.3390/ma13204571.

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During metal cutting, high temperatures of several hundred-degree Celsius occur locally at the cutting edge, which greatly impacts tool wear and life. Not only the cutting parameters, but also the tool material’s properties influence the arising cutting temperature which in turn alters the mechanical properties of the tool. In this study, the hardness and thermal conductivity of cemented tungsten carbides were investigated in the range between room temperature and 1000 °C. The occurring temperatures close to the cutting edge were measured with two color pyrometry. The interactions between cemented carbide tool properties and cutting process parameters, including cutting edge rounding, are discussed. The results show that cemented carbides with higher thermal conductivities lead to lower temperatures during cutting. As a result, the effective hardness at the cutting edge can be strongly influenced by the thermal conductivity. The differences in hardness measured at room temperature can be equalized or evened out depending on the combination of hardness and thermal conductivity. This in turn has a direct influence on tool wear. Wear is also influenced by the softening of the workpiece, so that higher cutting temperatures can lead to less wear despite the same effective hardness.
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Miura, Seiji, Hélio Goldenstein, Kenji Ohkubo, Hisashi Sato, Yoshimi Watanabe, and Tetsuo Mohri. "Mechanical and Physical Properties of Ni3Al-Based Alloys with Cr Carbides Dispersion." Materials Science Forum 561-565 (October 2007): 439–42. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.439.

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Ni3Al-based alloys possess good oxidation resistance, moderate room and high temperature strength and ductility. Introduction of Cr-carbide particles through a solidification route is attempted to provide higher hardness and wear resistance. The mechanical and physical properties are measured at room temperature for several alloys with various carbon concentrations up to 2.0 wt.%. Hardness and wear resistance as well as compressive strength increase with increasing carbon concentration, while bend ductility decreases. Adhesion between carbides and matrix phase is good, and cracks propagate mainly through carbides. The crystallographic orientation relationships between constituent phases are also attempted using electron back-scattering diffraction (EBSD) technique. The thermal conductivity is found to be less sensitive to the alloy composition.
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Qin, Yi Wei, and Sen Kai Lu. "Structural Stability and Electronic Properties of Fe-Doped B13C2: First-Principles Investigation." Advanced Materials Research 652-654 (January 2013): 344–47. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.344.

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Structure stability and electronic properties of Fe-doped boron carbides (B13C2) were studied using the first principle calculations based on plane wave pseudo-potential theory. The calculated results showed that the Fe-doped boron carbide representative stable structural is Fe substituting C atom on the end of chain C-B-C. The band structure and density of states (DOS) indicated that the coexistence of [C-B-Fe] ε+-[B11C] ε- structural unit made electrical conductivity increased. As the covalent bond of Fe-B was weaker than those of B-B and B-C, the thermal conductivity decreased for Fe-doped B13C2, thermoelectric property of Fe-doped boron carbides has been improved.
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Hozer, Leszek, Yet-Ming Chiang, Svetlana Ivanova, and Isa Bar-On. "Liquid-exchange processing and properties of SiC–Al composites." Journal of Materials Research 12, no. 7 (July 1997): 1785–89. http://dx.doi.org/10.1557/jmr.1997.0246.

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In this paper we demonstrate a novel liquid-exchange process to replace a secondary silicon phase in reaction-bonded siliconized silicon carbides (RBSC's) with a ductile metal reinforcement phase. When RBSC is exchanged with pure Al or Al–Si liquid, secondary phase silicon is dissolved and is substituted by Al or Al–Si alloy. The resulting composites show improvements in fracture toughness (single-edge precracked beam technique), with KIC value up to 8.6 Mpa · m1/2, compared to 3–4 MPa · m1/2 in otherwise similar siliconized silicon carbide. Increased fracture strength (four point flexure) was also observed after the liquid exchange process. The processing furthermore allows the coefficient of thermal expansion to be adjusted, and the thermal conductivity increased, for electronic packaging applications.
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Dissertations / Theses on the topic "Carbides Thermal properties"

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BOARI, ZOROASTRO de M. "Modelo matematico da influencia da distribuicao de particulas de SiC nas tensoes termicas em compositos de matriz metalica." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11105.

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IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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RAMBO, CARLOS R. "Sintese e caracterizacao de ceramicas biomorficas." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10973.

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Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Teague, Michael Phillip. "Modeling and measurement of thermal residual stresses and isotope effects on thermo physical properties of ZrB₂-SiC ceramics." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/MichaelTeague_09007dcc8056387c.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2008.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 27, 2008) Includes bibliographical references.
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Smrž, Peter. "Odolnost slinutého karbidu vůči vzniku a šíření tepelných trhlin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230951.

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This thesis aims to compare the relationship of physical-mechanical properties of tool materials made of WC-Co sintered carbides with their resistance to initiation and propagation of thermal cracks. The paper presents the results of testing the basic physical-mechanical properties of the three samples sintered carbides with different percentage of Co binder. Next, this thesis describes the progress and results of quench experiment and cutting tests using, which was described resistance of the tested samples to thermal and mechanical shock, depending on the values of physical-mechanical properties.
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Sánchez, Sovero Luis Francisco. "Effect of thermal annealing treatments on the optical and electrical properties of aluminum-doped, amorphous, hydrogenated silicon carbide thin films." Master's thesis, Pontificia Universidad Católica del Perú, 2019. http://hdl.handle.net/20.500.12404/14529.

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In this work, a systematic study of the structural, optical and electrical properties of aluminum doped hydrogenated amorphous silicon carbide (Al-doped a-SiC:H) thin films grown by radio frequency magnetron sputtering is presented. The samples were grown using a high purity Al and SiC targets in a hydrogen-rich atmosphere and then were subjected to a rapid thermal annealing processes with temperatures of up to 600 °C. The film thickness ranged from 321 nm to 266 nm. The amorphous nature of the thin films was confirmed by X-ray diffraction measurements before and after the annealing treatments. Fourier transform infrared spectroscopy analysis revealed the different heteronuclear bonds present in the samples, whilst Raman spectroscopy showed the different homonuclear bonds present in the material. The evolution of the latter bonds with annealing temperature was assessed, showing a change in the structure of the thin film. Energy-dispersive X-Rays Spectroscopy confirmed the incorporation of aluminum in the amorphous silicon carbide matrix. UV-VIS Transmittance spectra revealed optical parameters such as Tauc energy bandgap, Iso-absorption energy bandgap and refractive index. Furthermore, the bandgap is also determined by means of a recently developed band-fluctuation model. In addition, electrical resistivity is determined by means of a four-probe Van Der Pauw method. Only the samples annealed at 600 °C exhibited contacts with an Ohmic behavior. The annealed films exhibited lower resistivities than the as-deposited ones, probably due to a thermal-induced reordering of the atoms. This reordering is shown in the variation of the Urbach energy which is related to an increase in the Si-C bond density, due to the dissociation of the hydrogen-related bonds.
En este trabajo de tesis se presenta el estudio las propiedades estructurales y optoelectrónicas de carburo de silicio amorfo hidrogenado dopado con aluminio fabricado mediante pulverización catódica de radio frecuencia. Las muestras se fabricaron usando target de SiC y Al de alta pureza en atmosfera de hidrogeno. Luego las películas fueron calentadas hasta la temperatura de 600°C en un horno de rápido procesamiento térmico. La difracción de rayos X confirma la naturaleza amorfa de las películas. Los espectros de absorción infrarroja muestran los diferentes enlaces hetero-nucleares mientras que la espectroscopia Raman nos muestra los diferentes enlaces hononucleares presentes en la muestra. Se evaluó la evolución de los últimos enlaces con el tratamiento térmico, mostrando un cambio en la estructura del material. Espectroscopía de dispersión de energía de rayos X nos muestra la incorporación de aluminio en la matriz de carburo de silicio amorfo. Los espectros de transmitancia UV-VIS revelan parámetros ópticos tales como energía de Tauc, energía de Iso- absorción, energía de Tauc e índice de refracción. Además, el modelo de fluctuación de bandas desarrollado recientemente nos permite determinar los bordes de movilidad y energía de Urbach. Adicionalmente, el método de Van Der Pauw nos permite determinar el valor de la resistividad eléctrica de la muestra, solo a 600°C, donde se obtuvo un comportamiento óhmico mostrando baja resistividad eléctrica, probablemente debido a un reordenamiento de los átomos inducidos térmicamente. Este reordenamiento estructural se muestra en la variación de la energía de Urbach que está asociada con el aumento de la densidad de enlaces Si-C, debido a la disociación de los enlaces relacionados con el hidrogeno.
Tesis
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Lu, Xiao-Gang. "Theoretical modeling of molar volume and thermal expansion." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-252.

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Ren, Zhe. "Intrinsic Properties of "Case" and Potential Biomedical Applications." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1554409704895456.

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Luo, Huan. "Study of the plasma phenomenon in HiPIMS discharge. : Application to the reactive deposition of tantalum and hafnium carbide nanocomposite coatings and characterization of their physicochemical, structural, mechanical and oxidation resistance propertie." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCA010.

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La technologie de pulvérisation magnétron par impulsions de haute puissance (HiPIMS) a été développée et est considérée comme une méthode efficace pour la préparation des films. La technologie HiPIMS permet une bien plus grande flexibilité pour ajuster la structure et les performances du film, conduisant à des films avec des propriétés uniques qui sont souvent irréalisables dans les autres approches PVD. Cependant, le mécanisme sous-jacent du plasma pour soutenir la croissance du film impliqué est actuellement flou. De plus, la technologie HiPIMS est limitée au laboratoire, de nombreux films aux propriétés souhaitables n'ont pas été explorés dans le cadre de la pulvérisation HiPIMS. Dans ce travail, (i) le l’origine de la structure cohérente du plasma haute densité (les « spokes ») dans la décharge HiPIMS et (ii) comment la structure et les propriétés des films de TaC/a-C:H et HfC/a-C:H sont gérées par HiPIMS ont été étudiés. Dans l'étude du mécanisme de formation des « spokes », basée sur la relation de dispersion du plasma HiPIMS et l'évolution du couplage entre deux ondes azimutales, un modèle d'onde induit par couplage a été proposé. Dans l'étude des films TaC/a-C:H et HfC/a-C:H, les états des liaisons chimiques, la structure, la morphologie, les propriétés mécaniques et tribologiques, la stabilité thermique ainsi que la résistance à l'oxydation des films ont été étudiés. En comparaison avec ces films déposés par pulvérisation magnétron DC, il est démontré que la technologie HiPIMS permet une stratégie potentielle pour préparer des films TaC/a-C:H et HfC/a-C:H plus performants en termes de dureté, de coefficient de frottement et de résistance à l'usure, de résistance à l'oxydation et de stabilité thermique en modulant l'état de liaison chimique et la structure nanocomposite des films à travers un plasma réactif
High Power Impulse Magnetron Sputtering technology (HiPIMS) has been developed and considered as an effective method for film preparation. HiPIMS technology allows for much greater flexibility for manipulating film structure and performance, leading to films with unique properties that are often unachievable in the other PVD approaches. However, the underlying plasma mechanism for supporting film growth is currently blurred. Moreover, HiPIMS technology is still stationed in the laboratory, many films with desirable properties have not been explored under HiPIMS framework. In this work, (i) the driven mechanism of high density plasma coherent structure (i.e., spokes) in the HiPIMS discharge and (ii) how the structure and properties of the TaC/a-C:H and HfC/a-C:H films are regulated by HiPIMS were investigated. For the driven mechanism of spokes, based on the dispersion relationship of HiPIMS plasma and the evolution of the coupling between two azimuthal waves, the coupling-induced wave model was proposed. For the TaC/a-C:H and HfC/a-C:H films, the chemical bond states, structure, morphology, mechanical and tribological properties, thermal stability as well as oxidation resistance of the films were investigated. By comparison with DC deposited films, it is demonstrated that HiPIMS technology provides a potential strategy for preparing higher performance TaC/a-C:H and HfC/a-C:H films in terms of hardness, friction coefficient and wear resistance, oxidation resistance and thermal stability by modulating the chemical bonding state and nanocomposite structure of the films through HiPIMS reactive plasma
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Hung, Ya-Min, and 洪雅敏. "Investigation on the Thermal Properties of Graphene Oxide/Diamond/Silicon Carbide Composites Using Different Binders." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/gfw9dj.

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碩士
國立清華大學
材料科學工程學系
106
Owing to the advancement of miniaturization of electronic devices, effective thermal management becomes an important issue to keep the devices from overheating. Thus, fabrication of composites with high thermal conductivities attracts much attention to the researcher. In this study, we synthesized graphene oxide (GO) by using the Modified Hummers method and fabricated GO/diamond/silicon carbide/polydimethylsiloxane (GO/D/SiC/PDMS) and GO/D/SiC/flour composites using GO as filler. The thermal conductivities were measured by the laser flash method to better understand how the addition of diamond (D) and SiC of different sizes, the amount of GO, and temperature affected the thermal properties of the composites. The results showed that the addition of diamond and silicon carbide of different sizes could enhance composite density, which is favorable for phonon transport, and thus increased the thermal properties. Besides, the addition of GO played an important role in bridging the particle to form more compact structure, and offer effective and faster pathways for phonon transport. Because of synergistic effects of diamond, SiC and GO, the 100GO/D/SiC/PDMS and 100GO/D/SiC/flour possess the thermal conductivities of 2.560 W/mK and 3.977 W/mK, respectively. However, as the amount of GO increased, the thermal conductivity was decreased due to the formation of GO clusters, and thermal conductivity was decreased from 2.560 W/mK for 100GO/D/SiC/PDMS to 1.211 W/mK for 250GO/D/SiC/PDMS at 25C. Similarly, thermal conductivity was decreased from 3.977 W/mK for 100GO/D/SiC/flour to 1.856 W/mK for 250GO/D/SiC/flour. When temperature increased, the thermal conductivity of 100GO/D/SiC/PDMS and 100GO/D/SiC/flour were increased to 2.990 W/mK and 4.650 W/mK, respectively. Possessing high thermal conductivities at high temperature, the composites were believed to fulfill the requirement for thermal interface materials and promising for heat management.
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Books on the topic "Carbides Thermal properties"

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Pankratz, L. B. Thermodynamic properties of carbides, nitrides, and other selected substances. [Washington]: United States Dept. of the Interior, Bureau of Mines, 1995.

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Dobson, M. M. Silicon carbide alloys. Carnforth, Lancashire, England: Parthenon Press, 1986.

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Dobson, M. M. Silicon carbide alloys. Carnforth, Lancashire: Parthenon Press, 1986.

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Wahab, Z. Abdul. Thermal and electrical properties of doped silicon carbide based ceramics. Manchester: UMIST, 1993.

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Holley, C. E., Malcolm H. Rand, and E. K. Storms. The Chemical Thermodynamics of Actinide Elements and Compounds, Part 6: The Actinidecarbides/Isp424/6 (The Chemical thermodynamics of actinide elements and compounds). Intl Atomic Energy Agency, 1985.

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C, Goldsby Jon, DiCarlo James A, and United States. National Aeronautics and Space Administration., eds. Effects of thermal treatment on tensile creep and stress-rupture behavior on Hi-Nicalon SiC fibers. [Washington, D.C.]: National Aeronautics and Space Administration, 1995.

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Fisher, David. Mechanical Properties of MAX Phases. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901274.

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MAX Phase Materials are uniquely structured carbide and nitride materials which combine the rigidity, oxidation-resistance and high-temperature strength of ceramic materials with such metallic properties as good machinability, thermal-shock resistance, damage-tolerance and good transport properties. Potential applications include microelectronic layers, coatings for electrical contacts, thermal shock-resistant refractories, high-temperature heating elements, neutron-irradiation resistant nuclear applications, thermal barriers, protective aerospace coatings, and bio-compatible materials. The book reviews theoretical and experimental research up to early 2021 and references 185 original resources with their direct web links for in-depth reading.
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M, Sawko Paul, and Ames Research Center, eds. Thermal degradation study of silicon carbide threads developed for advanced flexible thermal protection systems. Moffett Field, Calif: National Aeronautics and Space Administration, Ames Research Center, 1992.

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Book chapters on the topic "Carbides Thermal properties"

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Anjos, V., M. J. V. Bell, Elder A. de Vasconcelos, E. F. da Silva Jr., A. A. Andrade, R. W. A. Franco, M. P. P. Castro, I. A. Esquef, and R. T. Faria Jr. "Thermal Lens Technique for the Determination of SiC Thermo-Optical Properties." In Silicon Carbide and Related Materials 2005, 703–6. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.703.

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Cabrero, J., F. Audubert, P. Weisbecker, A. Kusiak, and R. Pailler. "Titanium Carbide and Silicon Carbide Thermal Conductivity Under Heavy Ions Irradiation." In Mechanical Properties and Performance of Engineering Ceramics and Composites IV, 205–17. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9780470584262.ch19.

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Matocha, Kevin, Chris S. Cowen, Richard Beaupre, and Jesse B. Tucker. "Effect of Reactive-Ion Etching on Thermal Oxide Properties on 4H-SiC." In Silicon Carbide and Related Materials 2005, 983–86. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-425-1.983.

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Jiménez, J. A., Georg Frommeyer, M. López, N. Candela, and Oscar A. Ruano. "Mechanical Properties of Composite Materials Consisting of M3/2 High Speed Steel Reinforced with Niobium Carbides." In THERMEC 2006, 756–62. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.756.

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Scafè, E., L. Di Rese, L. Fabbri, G. Dinelli, G. Giusto, and M. Tiengo. "Influence of Processing on Thermal and Elastic Properties in Alumina Silicon Carbide Whisker Composites (+)." In 4th International Symposium on Ceramic Materials and Components for Engines, 773–80. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2882-7_85.

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Itatani, Kiyoshi, Ian J. Davies, and Hiroshi Suemasu. "Mechanical and Thermal Properties of Silicon Carbide Composites with Chopped Si-Al-C Fiber Addition." In SiAlONs and Non-oxides, 257–60. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908454-00-x.257.

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Froment, K., D. Gosset, M. Guéry, B. Kryger, and C. Verdeau. "Neutron irradiation effects in boron carbides: Evolution of microstructure and thermal properties." In Nuclear Materials for Fission Reactors, 185–88. Elsevier, 1992. http://dx.doi.org/10.1016/b978-0-444-89571-4.50027-x.

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Kumar, Santosh, and Rakesh Kumar. "Recent Advances in Design and Fabrication of Wear Resistant Materials and Coatings." In Handbook of Research on Tribology in Coatings and Surface Treatment, 87–117. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-9683-8.ch005.

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In recent years, the demand of wear resistance material and coating is increasing very rapidly as it reduces substantial energy losses resulting from wear and friction. To overcome these energy losses, surface engineering is employed. Surface engineering is the process of coating or modifying the surface of part to minimize wear, friction, corrosion, as well as to enhance the lifespan of machine components and reduce the manufacturing cost. Recently, numerous coating methods are available for distinct material (pure metals to alloys, carbides, composites, and ceramics) applications. Hence, this chapter provides an overview on the prevention of tribo-surfaces through distinct methods of surface modification such as thermal, physical, and chemical methods of coating. Further, distinct coating properties, applications, future scope, and challenges are described.
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Medri, Valentina, Diletta Sciti, and Elena Landi. "Production of UHTC Complex Shapes and Architectures." In MAX Phases and Ultra-High Temperature Ceramics for Extreme Environments, 246–77. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-4066-5.ch008.

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In spite of the difficult sinterability of Zr and Hf borides and carbides, recent results highlight that these ceramics can be produced with full density, fine microstructure, and controlled mechanical and thermal properties, through different procedures: pressureless sintering and hot pressing with proper sintering aids, reactive synthesis/sintering procedures starting from precursors, and field assisted technologies like spark plasma sintering. More recently, the use of near net shaping techniques and the development of UHTC porous components open the way to further and innovative applications, where the performances, fixed the material, are linked to 2D or 3D architectures and the high ratio of specific surface area to volume of the component and to the features of the porosity itself. Structural lightweight parts, insulator panels, filters, radiant burners, and solar absorbers are some of the possible applications.
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Silvestroni, Laura, and Diletta Sciti. "Effect of Transition Metal Silicides on Microstructure and Mechanical Properties of Ultra-High Temperature Ceramics." In MAX Phases and Ultra-High Temperature Ceramics for Extreme Environments, 125–79. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-4066-5.ch005.

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The IV and V group transition metals borides, carbides, and nitrides are widely known as ultra-high temperature ceramics (UHTCs), owing to their high melting point above 2500°C. These ceramics possess outstanding physical and engineering properties, such as high hardness and strength, low electrical resistivity and good chemical inertness which make them suitable structural materials for applications under high heat fluxes. Potential applications include aerospace manufacturing; for example sharp leading edge parts on hypersonic atmospheric re-entry vehicles, rocket nozzles, and scramjet components, where operating temperatures can exceed 3000°C. The extremely high melting point and the low self-diffusion coefficient make these ceramics very difficult to sinter to full density: temperatures above 2000°C and the application of pressure are necessary conditions. However these processing parameters lead to coarse microstructures, with mean grain size of the order of 20 µm and trapped porosity, all features which prevent the achievement of the full potential of the thermo-mechanical properties of UHTCs. Several activities have been performed in order to decrease the severity of the processing conditions of UHTCs introducing sintering additives, such as metals, nitrides, carbides or silicides. In general the addition of such secondary phases does decrease the sintering temperature, but some additives have some drawbacks, especially during use at high temperature, owing to their softening and the following loss of integrity of the material. In this chapter, composites based on borides and carbides of Zr, Hf and Ta were produced with addition of MoSi2 or TaSi2. These silicides were selected as sintering aids owing to their high melting point (>2100°C), their ductility above 1000°C and their capability to increase the oxidation resistance. The microstructure of fully dense hot pressed UHTCs containing 15 vol% of MoSi2 or TaSi2, was characterized by x-ray diffraction, scanning, and transmission electron microscopy. Based on microstructural features detected by TEM, thermodynamical calculations, and the available phase diagrams, a densification mechanism for these composites is proposed. The mechanical properties, namely hardness, fracture toughness, Young’s modulus and flexural strength at room and high temperature, were measured and compared to the properties of other ultra-high temperature ceramics produced with other sintering additives. Further, the microstructural findings were used to furnish possible explanations for the excellent high temperature performances of these composites.
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Conference papers on the topic "Carbides Thermal properties"

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Türkes, P. R. H., E. T. Swartz, and R. O. Pohl. "Thermal properties of boron and boron carbides." In AIP Conference Proceedings Volume 140. AIP, 1986. http://dx.doi.org/10.1063/1.35611.

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Väisänen, M., P. Vuoristo, T. Mäntylä, V. Maunu, P. Lintunen, and P. Lintula. "Microstructure and Properties of TiC-CrNiMo SHS Spray Powder and Thermally Sprayed Coating." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p0429.

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Abstract Titanium carbide cermet spray powder was produced by the SHS process (Self-propagating High-temperature Synthesis) using elemental Ti, C, Mo and prealloyed CrNiMo powders as starting materials. The powder was characterised (particle size distribution, phase structure, morphology) and the internal structure of each cermet particle was found out to be dense consisting of fine distribution of carbides embedded in a metallic matrix. The particle size range suitable for thermal spraying was obtained by sieving and air classifying. The coatings were prepared by HVOF spraying (DJH2600 and DJH2700). The dry abrasion wear resistance was evaluated by the rubber wheel abrasion wear test and electrochemical corrosion behaviour by open circuit potential measurements. According to the XRD analysis the amount of retained carbides in the coatings is high and the carbide phase has a spherical shape also in the coatings. The microstructure of coatings obtained is dense and the coatings possess good properties in wear and corrosion tests. WC-Co-Cr and Cr3C2-NiCr powders were used for comparison.
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Rincon Romero, A., A. Lynam, H. Memon, F. Venturi, and T. Hussain. "Development of Thermal Sprayed Silicon Carbide Coatings by an Innovative Suspension/Solution Precursors Approach." In ITSC2022. DVS Media GmbH, 2022. http://dx.doi.org/10.31399/asm.cp.itsc2022p0268.

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Abstract Carbides are interesting materials for many wear resistant and high temperature applications, however, the production of coatings with these materials represents a significant challenge as they tend to oxidise or decompose into gaseous phases when they are exposed to extreme thermal spray conditions. An innovative method merging suspension and solution precursors was developed to allow the production of carbide composite coatings. Suspensions of carbides and borides were modified with the addition of oxide precursors to obtain composite coatings by high-velocity oxy-fuel (HVOF) thermal spray. The transformation of these oxides precursors and their subsequent melting during spraying contribute to protect the carbides from oxidising conditions, avoid their degradation during the spray process and support the development of dense coatings, as it was demonstrated by dispersive X-ray spectroscopy and X-ray diffraction analysis. The relationships between processing and microstructure were studied in terms of porosity phase distribution and mechanical properties, proving that this novel approach could be applied to obtain coatings of materials that are prone to decompose during thermal spraying.
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Magnani, M., P. H. Suegama, A. V. Benedetti, N. Espallargas, S. Dosta, and J. M. Guilemany. "The Application of Cr3C2-NiCr Coatings to Improve the Corrosion and Wear Properties of an AA7050 Alloy." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p1356.

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Abstract The Cr3C2-NiCr coatings were sprayed on an AA 7050-T7 alloy by HVOF Thermal Spray Process using AMPERIT 586.054 powder. The substrate was refrigerated during the sample preparation using liquid nitrogen in a device specially designed for this purpose. The spray conditions were also performed increasing the carrier gas flow or the oxygen flow. The XRD and SEM studies showed well-bounded coating/substrate interface, pores, metallic matrix, chromium oxides, carbides, and carbides dissolution into the matrix. The structure comparison between the samples showed a denser structure due to the increase in the carrier gas velocity and the highest carbide dissolution due to the high temperature achieved during the spray process. All samples showed similar wear abrasive behavior, and all of them showed wear rates 7 times higher than the aluminum alloy. All samples also showed corrosion resistance much higher than the AA7050 alloy in NaCl solution.
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Stavros, A. J. "Surface Changes of Several Thermal Spray Coatings Abraded by a TiO2 Slurry." In ITSC2003, edited by Basil R. Marple and Christian Moreau. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.itsc2003p0411.

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Abstract Three-body wear is important in many industrial processes. A laboratory study was performed to follow the response of highly polished thermal spray coating surfaces to degradation by hard titanium dioxide particles. A scanning electron microscope, a white light interferometer and a gloss meter were used to evaluate surface structure and texture of the aspolished and abraded surfaces. Tungsten carbide coatings with differing binder material and applied by different processes all degrade by the same mechanism: softer material is worn away by the hard TiO2 particles until the remaining structure consists of the hardest carbides protruding above the general surface plane. This structure is obtained in spite of significant differences in other surface properties such as roughness (Ra) and gloss number. If a more uniform wear surface is desired the carbide spacing must be reduced so that the coating more effectively presents a carbide surface to the TiO2 particles.
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Sahu, Shreehard, Bikash Kumar, Siba Sundar Sahoo, Balila Nagamani Jaya, and Dheepa Srinivasan. "Thermal Stability of Additively Manufactured Mar M 509." In 2022 International Additive Manufacturing Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/iam2022-91410.

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Abstract Co based superalloy Mar M 509 having excellent high temperature oxidation and hot corrosion resistance is studied via the laser powder bed fusion (LPBF) process. The microstructure and mechanical properties of Mar M 509 in the as-printed (AsP) and heat-treated (HT) condition are compared, as a function of two build orientations (longitudinal (L) and transverse (T)), to establish a working range for application of the alloy. The AsP condition has a distinct cellular microstructure (500–600 nm) with 50–60 nm carbide particles decorating the cell boundaries. The L build orientation displays a strong <001> texture, has columnar grains with a grain size of 8–35 μm (along major axis) and a grain aspect ratio of 4, while the T orientation displays a more equiaxed, but bi-modal microstructure with a grain size of 5–28 μm. The room temperature mechanical properties show variability between L and T with T having 15% higher hardness and 34% higher 0.2% yield strength (YS), 30% lower elongation than L. After a short cycle heat treatment at 1250°C, the weld bead structure and cellular boundaries are broken down and there is substantial grain growth in both L (25–33 μm along major axis) and T orientations (5–42 μm), along with coarsening of carbides (250–350 nm). The dislocation density reduces substantially, indicating recrystallisation, and the lattice parameter of the matrix drops significantly, suggesting solute depletion that contributes to precipitate growth and enrichment of the carbides. There is a drop in the yield strength from 860 MPa to 740 MPa in L and from 1150 MPa to 840MPa in T and an increase in ductility from 14% to 23% in L.
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Lyphout, C., K. Sato, S. Houdkova, E. Smazalova, L. Lusvarghi, G. Bolelli, and P. Sassatelli. "Tribological Properties of Hard Metal Coatings Sprayed by High Velocity Air Fuel Process." In ITSC2015, edited by A. Agarwal, G. Bolelli, A. Concustell, Y. C. Lau, A. McDonald, F. L. Toma, E. Turunen, and C. A. Widener. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0761.

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Abstract Lowering the thermal energy and increasing the kinetic energy of sprayed particles by newly developed HVAF systems can significantly reduce material decarburization, and increases sliding wear and corrosion resistance of hard metal coatings, making HVAF coatings attractive both economically and environmentally over its HVOFs predecessors. Two agglomerated and sintered feedstock powder chemistries, respectively WC-Co (88/12) and WC-CoCr (86/10/4), with increasing primary carbides grain size from 0.2 to 4.0 microns, have been deposited by the latest HVAF-M3 process onto carbon steel substrates. Respective dry sliding wear behaviours and friction coefficients were evaluated at room temperature via Ball-on-disk (ASTM G99-90) wear tests against Al2O3 counterparts, and via Pin-on-disk (ASTM G77-05) wear tests against modified martensitic steel counterparts in both dry and lubricated conditions. Sliding wear mechanisms, with formation of wavy surface morphology and brittle cracking, are discussed regarding the distribution and size of primary carbides. Corrosion behaviours were evaluated via standard Neutral Salt Spray (NSS), Acetic Acid Salt Spray (AASS), accelerated corrosion test and electrochemical polarization test at room temperature. Optimization of coating tribological properties are discussed regarding the suitable selection of primary carbide size for different working load applications.
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Melnyk, C., R. Gansert, D. Lajun, B. Weinstein, D. Grant, and M. Watson. "Investigation of Mechanical Properties of Coatings and Bulk Components of Various Grain Sized Tungsten-Carbide-Cobalt Based Materials." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and A. McDonald. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p0157.

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Abstract Thermal sprayed coatings produced from ultrafine, near-nano and nano grained powders provide improved properties as compared to conventional (micron size) powders. These ultrafine, near-nano and nano grained materials show significant potential for applications in the aerospace, energy, oil & gas and a great many other industries. A study was conducted to investigate the influence of grain size on the microstructures formed and mechanical properties of conventional, ultrafine, near-nano and nano size WC materials. Powders and coatings as well as consolidated forms of tungsten-carbide-10% cobalt- 4% chromium (WC-10Co-4Cr) and tungsten-carbide- 12% cobalt (WC-12Co) materials are examined. Thermal spray coatings are produced of carbides of several different grain sizes using high velocity oxygen-fuel (HVOF) thermal spray processing. Spark Plasma Sintering (SPS) is performed to provide consolidated forms of WC-10Co-4Cr materials. An examination of the thermal sprayed coatings is conducted using microstructural analysis and mechanical property testing. A brief examination of the wear and bend performance of a near-nano, and nano-enhanced material will be compared to a conventional material (micron sized).
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Medyanik, S. N., and N. Vlahopoulos. "Atomistic Simulation Studies of the Effects of Defects on Thermal Properties of Ultra High Temperature Ceramics." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65389.

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Due to the harsh environments created by high speeds, significant new demands are placed on materials used for constructing hypersonic vehicles. Ultra high temperature ceramics (UHTCs) like carbides and borides exhibit unique thermal properties, such as very high melting points and good thermal conductivities. These properties make the ceramic materials good candidates for applications like Thermal Protection Systems (TPS) of the hypersonic vehicles. However, thermal properties of UHTCs may be very sensitive to microstructures of the materials. Thus, atomic scale defects may impact certain thermal properties, such as thermal conductivity. The effects of such small defects may be properly studied only through atomistic simulation methods, such as molecular dynamics (MD). Previously, atomistic simulation studies have been performed for the effects of point defects on thermal properties in silicon carbide (SiC). In addition, atomistic simulations have been applied to assess thermal conductivity in zirconium diboride (ZrB2) for perfect crystals and polycrystals. However, to our knowledge, no studies of the effects of point defects have been performed for zirconium diboride. This paper applies atomistic simulations to assess the impact of point defects on thermal conductivity in ZrB2 perfect crystals. Recently derived interatomic potential for ZrB2 along with LAMMPS molecular simulation package and MedeA software environment are employed in this effort. Phonon part of the thermal conductivity is calculated using Green-Kubo method. Calculations for a perfect crystal are conducted first and the results are compared to experimental data available from the literature. Then, several types of point defects are considered (vacancies, substitutions, and interstitials) and their impact on the phonon conductivity is evaluated. It is found that even a small concentration of point defects may have substantial effect and result in a reduction in the thermal conductivity values by almost an order of magnitude. The obtained results are in good qualitative agreement with previous studies conducted for silicon carbide. The methodology which is utilized in this work, the modeling procedure, and the obtained results are discussed in this paper.
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Zimmermann, S., B. Gries, and J. Fischer. "New Health and Environment-Friendly Iron Based Materials Employed as Binders for Carbide Powders used in Thermal Spraying." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p0965.

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Abstract Cobalt containing carbide powders such as WC-Co and WC-Co-Cr for thermal spraying exist in numerous modifications varying in chemistry, carbide size, and production method. They are widely used for wear, erosion and corrosion protection in many industrial fields. However, for decades it has been well-known from the hard metal industry that WC and Co containing hard metals in breathable dust form can provoke severe lung diseases if inhaled. Recent examinations have proven that this toxicity can be significantly reduced if the Co is pre-alloyed by Fe. In thermal spraying employees are also dealing with Co containing carbides, for example in powder and coating production. Therefore, in order to reduce the hazards for health and the environment, a new class of agglomerated and sintered carbide powders using Fe based binder materials have been developed and investigated. In the present study the powders were HVOF sprayed in order to examine the influence of their different composition and morphology on the microstructure and the properties of the coatings in comparison to standard materials. The experiments comprise microstructural examinations, wear and corrosion tests.
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