Composition versus friction and wear behavior of plasma sprayed WC-(W,Cr)(2)C-Ni/Ag/BaF2-CaF2 self-lubricating composite coatings for use up to 600 degrees C

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	Composition versus friction and wear behavior of plasma sprayed WC-(W,Cr)(2)C-Ni/Ag/BaF2-CaF2 self-lubricating composite coatings for use up to 600 degrees C
	Chen JM(陈建敏)1 ; Hou GL(侯国梁)1,2 ; Chen J(陈杰)1,2 ; An YL(安宇龙)1 ; Zhou HD(周惠娣)1 ; Zhao XQ(赵晓琴)1; Yang J(杨杰)1,2 ; Chen JM(陈建敏)
刊名	Applied Surface Science
	2012
卷号	261 页码:584-592
关键词	Atmospheric plasma spraying WC-(W BaF2/CaF2 Ag Self-lubricating composite coating Composition optimization Friction and wear behavior Cr)(2)C-Ni
ISSN号	0169-4332
通讯作者	陈建敏
英文摘要	This paper reports the composition optimization of self-lubricating composite coatings containing WC–(W,Cr)₂C–Ni, silver and fluoride eutectics. Various ingredients obtained by powder blending were studied to determine their optimum content in as-prepared composite coatings. An atmospheric plasma spraying (APS) system was used to deposit promising WC–(W,Cr)₂C–Ni/Ag/BaF₂–CaF₂ self-lubricating composite coatings. The friction and wear behavior of the composite coatings sliding against Si₃N₄ ball was investigated from room temperature to 600 °C. Results show that silver and fluoride eutectics can effectively reduce the friction coefficient of the coatings and the wear volume loss of counterpart balls over the whole temperature range. Thanks to the highest hardness, WC–(W,Cr)₂C–Ni coating without silver and fluoride eutectics has the lowest wear rate at room temperature and 600 °C. However, it has a high friction coefficient and a very high wear rate at 200 and 400 °C, due to severe adhesion wear and fatigue wear thereat. Fortunately, introducing appropriate amount of silver and fluoride eutectics contributes to effectively reduce the wear rate of the composite coatings at 200 and 400 °C. The optimized composite coating consists of 70 wt.% WC–(W,Cr)₂C–Ni, 15 wt.% Ag and 15 wt.% BaF₂/CaF₂, and it has excellent friction and wear performance over a wide range of temperature.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the Science Fund for Creative Research Groups of National Natural Science Foundation of China(grant no. 50421502);the Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences (YYYJ-0913)
语种	英语
WOS记录号	WOS:000310442500088
公开日期	2013-07-12
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/3285]
专题	兰州化学物理研究所_固体润滑国家重点实验室兰州化学物理研究所_先进润滑与防护材料研究发展中心
通讯作者	Chen JM(陈建敏)
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chen JM,Hou GL,Chen J,et al. Composition versus friction and wear behavior of plasma sprayed WC-(W,Cr)(2)C-Ni/Ag/BaF2-CaF2 self-lubricating composite coatings for use up to 600 degrees C[J]. Applied Surface Science,2012,261:584-592.
APA	Chen JM.,Hou GL.,Chen J.,An YL.,Zhou HD.,...&陈建敏.(2012).Composition versus friction and wear behavior of plasma sprayed WC-(W,Cr)(2)C-Ni/Ag/BaF2-CaF2 self-lubricating composite coatings for use up to 600 degrees C.Applied Surface Science,261,584-592.
MLA	Chen JM,et al."Composition versus friction and wear behavior of plasma sprayed WC-(W,Cr)(2)C-Ni/Ag/BaF2-CaF2 self-lubricating composite coatings for use up to 600 degrees C".Applied Surface Science 261(2012):584-592.