1. Microstructure and properties of W–Cu composites reinforced by in-situ synthesized WC particles in surface layer
- Author
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Qiao Zhang, Bin Yang, Zheng Chen, Nan Deng, Baojiang Chen, and Shuhua Liang
- Subjects
W–Cu composites ,In-situ synthesized WC particles ,Gradient structure ,Properties ,Atomic diffusion kinetic ,Mining engineering. Metallurgy ,TN1-997 - Abstract
In the present work, cast iron was used as the carbon source to fabricate WC particle gradient-reinforced W–Cu composites. The results revealed that the surface layer of W–Cu composites after carbonization can be divided into a complete carbonization zone and core-shell structure transition zone, the thickness of the carbonized layer increased gradually with the extension of treatment time. In addition to the W phase and Cu phase, WC and Fe3W3C phases are formed in the surface layer. The hardness and compressive strength of the surface layer show a trend of first increasing and then decreasing, and the arc erosion resistance of the surface layer gradually improves with the treatment time extending. The C atoms diffusion relationship between carbonization layer thickness (D), sintering temperature (T), and treatment time (t) of W–Cu composites with cast iron can be fitted as follows: D=1.9287×1013texp(‐929231RT).
- Published
- 2024
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