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首页> 外文期刊>Journal of the Korean Ceramic Society >Microstructural and mechanical properties of pressureless sintered high-wear-resistant SiC composite materials
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Microstructural and mechanical properties of pressureless sintered high-wear-resistant SiC composite materials

机译：无压烧结高耐磨SiC复合材料的微观结构与力学性能

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摘要

The microstructural and mechanical properties of pressuless sintered SiC-based composite materials with Al or Cu addition (0-10 wt.%) were studied. The introduction of 1-2 wt.% of metals to the SiC results in appreciable porosity decreases from 31 to 19 +/- 1%. Moreover, metallic aids considerably affects the phase composition of the materials. Cu suppresses the formation of mullite. In contrast, Al increases the content of the moissanite phase in the final material because of a thick oxide film on the surface of silicon carbide. However, metal content does not steadily increases due to the melt removes from the open pores during the sintering process. The hardness of the composite material mainly depends on the moissanite phase content, which could be enhanced by metal additives. Developed composite materials have up to 50 and 3 times greater resistance to abrasive and cavitation wear correspondingly than the original porous SiC.
机译：的微观结构和力学性能pressuless烧结应用复合材料用铝或铜之外(清廉wt. %)进行了研究。引入1 - 2 wt. SiC %的金属从31日导致明显的孔隙度降低19 + / - 1%。显著影响的相组成材料。莫来石。碳硅石阶段最后的材料由于表面氧化膜厚碳化硅。由于融化删除从稳步增长在烧结过程中打开毛孔。复合材料的硬度主要取决于在碳硅石阶段内容,这可能是增强了金属添加剂。材料50和3倍耐磨料,气蚀磨损相应的比原来的多孔碳化硅。

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