Tribological properties of La_2O_3 and CeO_2 doped CoCrW coatings deposited by supersonic plasma spraying  

作　　者：ZHANG ZhenYu LU XinChun LUO JianBin 

机构地区：[1]State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China [2]Key Laboratory for Precision and Non-traditional Machining Technology of the Ministry of Education, DaUan University of Technol- ogy, Dalian 116024, China

出　　处：《Chinese Science Bulletin》2007年第23期3292-3298,共7页

基　　金：Supported by the National Key Basic Research Program of China (Grant No. 2003CB716201);the National Natural Science Foundation of China (Grant No. 50575121);the National Science Foundation for Post-doctoral Scientists of China (Grant No. 20060390064);the Scientific Startup Research Foundation for the New Staff of Dalian University of Technology, and the Open Foundation of Key Labora-tory for Precision and Non-Traditional Machining Technology of the Ministry of Education of Dalian University of Technology (Grant No. JMTZ200703)

摘　　要：A novel supersonic plasma spraying was used to prepare rare earth oxides doped CoCrW coatings. X-ray diffractometer, contact surface profiler, hardness tester, micro-friction and -wear tester and en- vironmental scanning electron microscope equipped with energy dispersive X-ray spectroscopy were employed to investigate the phase structure, surface morphology, microhardness, friction and wear properties of the sprayed coatings. The results show that rare earth oxide doped coatings have high microhardness and excellent tribological properties. Furthermore, the friction and wear mechanisms of sprayed coatings are also discussed.A novel supersonic plasma spraying was used to prepare rare earth oxides doped CoCrW coatings. X-ray diffractometer, contact surface profiler, hardness tester, micro-friction and -wear tester and environmental scanning electron microscope equipped with energy dispersive X-ray spectroscopy were employed to investigate the phase structure, surface morphology, microhardness, friction and wear properties of the sprayed coatings. The results show that rare earth oxide doped coatings have high microhardness and excellent tribological properties. Furthermore, the friction and wear mechanisms of sprayed coatings are also discussed.

关 键 词：超声波 喷雾 磨擦性质 地球科学 

分 类 号：P3[天文地球—地球物理学]