PDF《及其有限元分析》

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2742 281. Behaviors of Friction and W ear and Fin ite Element Analysis of Three Ceram ic ToolMateri als YAO Shu2qing

1 , X I NG Shu2 m ing

1 , DENG Jian2xin

2 (1. School of M echanical and Electronic Control Engineering, B eijing J iaotong University, B eijing 100044, China;

2. School of M echanical Engineering, Shandong University, J inan 250061, China) Abstract: Three kinds ofA l2 O3 2based ceram ic toolmaterials composed of different additives suchas TiC, Ti(C,N) and SiCw were investigated on theMRH2

3 H igh Speed Ring2block wear tester . The stress distribution during friction and wear processwas calculated byANSYS . SEM was used to observe the ceram ic surface. D ifferent additives have a profound effect on the wear resistance of the A l2 O3 2based ceram ic materials . The wear rates of the A l2 O3 2based ceram ics increased with the increase of the ratio of elastic modulus and hardness, and decreased with the increase of fracture toughness . Adhesive wearwas the predom inantwearmechanism forA l2 O3 /TiC. W hile the wear mecha2 nis m of A l2 O3 /Ti(C,N) and A l2 O3 /SiCw was abrasive wear . Key words: A l2 O3 , ceram ic, friction and wear behavior, stress analysis Author: X I NG Shu2 m ing, male, born in 1962, Ph. D. , Professor, e2 mail: xs m@ jdxy . njtu. edu. cn

9 6

5 第6期姚淑卿等 : A l2O3 基陶瓷刀具材料摩擦磨损特性及其有限元分析