High temperature tribological behaviors and wear mechanisms of NiAl-MoO3/CuO composite coatings

doi:10.1016/j.surfcoat.2020.125910

	High temperature tribological behaviors and wear mechanisms of NiAl-MoO3/CuO composite coatings
	Yao, Qianqian 1,2; Jia, Junhong 1,2; Chen, Tijun 2; Xin, Hua 1; Shi, Yun 1; He, Nairu 1; Feng, Xiaochun 3; Shi, Peiying 3; Lu, Cheng 3
刊名	Surface and Coatings Technology
	2020-08-15
卷号	395
关键词	Aluminum alloys Binary alloys Copper oxides Decomposition Friction Molybdenum oxide Nickel oxide Plasma spraying Surface reactions Tribology Wear of materials Atmospheric plasma spraying Cation polarizability Friction coefficients High-temperature lubricants Lubricating effect Ni-al composite coatings Tribological behaviors Tribological properties
ISSN号	02578972
DOI	10.1016/j.surfcoat.2020.125910
英文摘要	The MoO3/CuO binary oxides were selected as the potential high temperature lubricants in this work based on the ionic potential and cation polarizability approach correlated to the lubricity of solid oxides. The NiAl composite coatings with addition of 10, 30, and 50 wt% of MoO3/CuO (1:1) were fabricated via atmospheric plasma spraying (APS) technology. The tribological properties of these NiAl-MoO3/CuO composite coatings were evaluated from room temperature to 800 °C, and the basic wear mechanisms were investigated as well. The results show that, at 800 °C, the composite coating with 30 wt% of MoO3/CuO led to the lowest friction coefficient (approximately 0.16) and wear rate (3.7 × 10−5 mm3 N−1 m−1). These superior tribological outcomes were attributed to the synergistic lubricating effect of MoO3, CuO, NiO and NiMoO4 which formed on the worn surfaces via tribo-chemical reactions. Meanwhile, the decomposition of CuMoO4 formed by tribo-chemical reaction and worked synergistically to reduce the friction coefficient and wear rate at high temperatures. Meanwhile, the decomposition of CuMoO4 formed via tribo-chemical reaction of MoO3 and CuO at high temperature was observed at 800 °C sliding. © 2020 Elsevier B.V.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000539335900015
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115622]
专题	材料科学与工程学院
作者单位	1.College of Mechanical and Electrical Engineering, Shaanxi University of Science & Technology, Xi'an; 710021, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 3.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou; 730000, China
推荐引用方式 GB/T 7714	Yao, Qianqian,Jia, Junhong,Chen, Tijun,et al. High temperature tribological behaviors and wear mechanisms of NiAl-MoO3/CuO composite coatings[J]. Surface and Coatings Technology,2020,395.
APA	Yao, Qianqian.,Jia, Junhong.,Chen, Tijun.,Xin, Hua.,Shi, Yun.,...&Lu, Cheng.(2020).High temperature tribological behaviors and wear mechanisms of NiAl-MoO3/CuO composite coatings.Surface and Coatings Technology,395.
MLA	Yao, Qianqian,et al."High temperature tribological behaviors and wear mechanisms of NiAl-MoO3/CuO composite coatings".Surface and Coatings Technology 395(2020).