Synthesis and characterization of (Zr1/3Nb1/3Ti1/3)C metal carbide solid-solution ceramic |
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Authors: | Beilin Ye Yanhui Chu Kehan Huang Da Liu |
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Affiliation: | School of Materials Science and Engineering, South China University of Technology, Guangzhou, China |
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Abstract: | (Zr1/3Nb1/3Ti1/3)C metal carbide solid-solution ceramic has been successfully fabricated by hot pressing sintering at 2473 K using ZrC, NbC, and TiC powders as raw materials. The results show that the as-prepared solid-solution ceramic possesses a single rock-salt crystal structure of metal carbides and simultaneously exhibits high compositional uniformity from nanoscale to microscale. By taking advantage of these unique features, it shows relatively high hardness of 38.8 ± 4.4 Gpa and elastic modulus of 481.8 ± 31.0 Gpa and relatively low thermal conductivity of 17.1 ± 0.3 W/(m·K) and thermal diffusivity of 6.1 ± 0.1 mm2/s, which may attribute primarily to the presence of solid solution effects. |
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Keywords: | mechanical performances metal carbides solid solutions thermal physical properties |
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