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SiC/20vol.% C(graphite) composites were fabricated by plasma-activated sintering. The Vickers hardness was 5.8GPa because of the existing of graphite and weak interface between the graphite and the SiC. Specimens were treated by silicon infiltration, which improved the surface Vickers hardness (24GPa). X-ray diffraction results showed that the graphite in the surface reacted with liquid silicon to...
The B 4 C/BN composites were fabricated by hot-pressing process. In this research, the silicon infiltration process was applied to improve the surface hardness and wear resistance of the B 4 C/BN composites. The phase composition, microstructure, Vickers hardness and wear resistance of the silicon infiltrated B 4 C/BN composites were investigated and compared with the hot-pressed...
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