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| Design window for WC-based ceramics with low thermal expansion |
| ZHENG Jianqiu |
| （College of Artificial Intelligence, Xiamen City University, Xiamen 361008, China） |
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Abstract Compared with other ceramic materials, WC-based ceramic materials with the excellent comprehensive
properties of mechanical, manufacturability, and electrical machining, can be widely used in cutting tools, molds
and wear-resistant fields, etc., and it also needs to have good thermo-physical properties (e.g. low coefficient of
thermal expansion and high thermal conductivity) in high temperature applications, in order to ensure itself microstructure
stability and the structural stability between workpieces. How to design and prepare WC-based ceramic
materials with low coefficient of thermal expansion is discussed from three aspects: composition, interface microstructure,
and grain size and morphology, and the potential effects of the above methods on its sinter-ability and mechanical
properties of WC-based ceramic materials are also detailedly analyzed. It is expected that some theoretical
assistances can help to expand its high temperature applications.
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Received: 03 November 2021
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2022, Vol. 32 
