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Wear properties of nial based materials

Progress in Natural Science:materials International 2012年第5期22卷 414-425页

作者： Jianting Guo a,Zhensheng Wang b,Liyuan Sheng c,d,Lanzhang Zhou a,Chao Yuan a,Zhigang Chen b,Li Song b a Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China b Hunan University of Science and Technology,Xiangtan 411201,China c College of Engineering,Peking University,Beijing 100871,China d Shenzhen Institute,Peking University,Shenzhen 518057,China Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China Hunan University of Science and Technology Xiangtan 411201 China College of Engineering Peking University Beijing 100871 China Shenzhen Institute Peking University Shenzhen 518057 China

The nial based materials including nial-TiC-Al2O3 composite,nial-Cr(Mo)-Hf-Ho eutectic alloy and nial-Cr(Mo)-CrxSy in situ composite were fabricated and their wear properties were tested at different *** results revealed that the nial-TiC-Al2O3 composite,nial-Cr(Mo)-Hf-Ho eutectic alloy and nial-Cr(Mo)-CrxSy in situ composite exhibited the excellent wear properties between 700℃ and 900℃.The microstructure observations exhibited that the self-lubricant films formed on the worn surfaces during the dry sliding test at high temperature,which decreased the wear rate and friction coefficient *** observation on the self-lubricant film revealed that it was mainly comprised by ceramic amorphous and *** with the nial-TiC-Al2O3 composite,the nial-Cr(Mo)-CrxSy in situ composite has lower friction coefficient at low *** phenomena may be ascribed to the addition of sulfide which contributes much to the formation of self-lubricant,and moreover the TiC addition increase the strength of nial based material and its wear resistance.

关键词： nial based materials Microstructure Wear properties Self-lubrication Lubricate film

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