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《TRIBOLOGY》 1997-02
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Wear Performance and Mechanism of Si_3N_4 Composite Ceramic Cutting Tool

Liu Yourong Liu Jiajun Zhu Baoliang(Tribology Research Institute Tsinghua University Beijing 100084 China)  
The wear resistance and life of Si_3N_4 composite ceramic cutting tool were studied when cutting 45# carbon steel and 1Cr18Ni9Ti austenite stainless steel.Meanwhile the cutting temperature distributions on the surface of the tool at different cutting speed were measured by a thermal video system, and the wear morphologies and wear mechanisms were investigated by SEM,EDX as well. The research results showed that the ceramic tool life when cutting 45# steel was 9.5 times as much as that when cutting stainless steel. And the later cutting temperature was 200~300 ℃ higher than the former. The main wear mechanism for cutting stainless steel was adhesion and diffusion promoted by high cutting temperature, which was the main reason of difficulttocut for stainless steel.
【Fund】: 国家自然科学基金 中科院兰州化物所固体润滑开放室基金
【CateGory Index】: TQ174.758.22
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