1. Mechanical and thermal properties of densified ZrCx (x = 0.5, 0.7 and 1.0) ceramics.
- Author
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Xiong, Meiling, Lu, Zhiyou, Yan, Shanshan, Chen, Hongmei, Tao, Xiaoma, Ouyang, Yifang, Li, Zian, and Du, Yong
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THERMAL properties , *CERAMICS , *YOUNG'S modulus , *THERMAL conductivity , *VACUUM arcs , *VICKERS hardness - Abstract
The mechanical and thermal properties of ZrC x are strongly dependent on the composition and microstructure. In the present study, densified ZrC x (x = 0.5, 0.7 and 1.0) with relative density in the range of 99.2–99.7% have been prepared by a combination of spark plasma sintering (SPS) and vacuum arc melting (VAM). Both the Young's modulus and Vickers hardness monotonically increase with increasing C/Zr ratio. The maximum Young's modulus and Vickers hardness values of 488.1 ± 13.4 GPa and 28.8 ± 1.7 GPa, respectively, for dense ZrC have been obtained. With increasing the C/Zr ratio, the thermal conductivity of ZrC x increases. The thermal conductivity ZrC ranged from 25.17 W/m/K to 43.85 W/m/K from ambient to 1200 °C. Owing to the higher density of ZrC x , the present thermal conductivities and Young's modulus of ZrC x are higher than those of the previous studies. The present results are beneficial to design and preparation of ZrC x ceramics. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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