The Tribological Properties of NiCr-Al2O3-TiO2 Composites at Elevated Temperatures

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	The Tribological Properties of NiCr-Al2O3-TiO2 Composites at Elevated Temperatures
	Wang JY(汪建义)1,2; Shan Y(陕钰)1 ; Guo HJ(国洪建)1 ; Wang WZ(王文珍)1 ; Yi GW(易戈文)1 ; Jia JH(贾均红)1
刊名	Tribology Letters
	2015
卷号	58 期号:1 页码:1(1-10)
关键词	Ni-based composite Friction coefficient Tribological properties High temperature
ISSN号	1023-8883
通讯作者	汪建义
英文摘要	Ni-based composite that contains TiO₂ and Al₂O₃ was prepared by powder metallurgical hot pressing method. TiO₂ and Al₂O₃ being added to Ni-based composite at the same mass fraction and the effects on some mechanical and tribological properties of the composites when rubbing against alumina ball were investigated from room temperature to 700 °C. The results show that the tribological properties of the composites were improved by adding TiO₂ and Al₂O₃ simultaneously. The best comprehensive properties of mechanics and tribology were obtained when TiO₂ and Al₂O₃ in the alloy have the same content of 10 wt%. The friction coefficient and wear rate of the composites decrease with the increasing of temperature and TiO₂ and Al₂O₃ contents, and the composites with addition of 10 wt% TiO₂ and 10 wt% Al₂O₃ exhibit the lowest friction coefficient (0.32) and wear rate (1.71 × 10⁻⁵ mm³/N m) at 700 °C. XRD and SEM equipped with EDS analysis shows that the lubrication films consist of aluminum titanate and several kinds of titanium oxide formed on rubbing surface with the temperatures elevated. The synergistic action of titanium oxide and aluminum titanate and NiTiO₃ in the wear surface at high temperature is responsible for the improving of tribological properties of the composites.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the National Natural Science Foundation of China (Grant Nos. 50972148;51175490)
语种	英语
WOS记录号	WOS:000351389500001
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18392]
专题	兰州化学物理研究所_固体润滑国家重点实验室
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Wang JY,Shan Y,Guo HJ,et al. The Tribological Properties of NiCr-Al2O3-TiO2 Composites at Elevated Temperatures[J]. Tribology Letters,2015,58(1):1(1-10).
APA	Wang JY,Shan Y,Guo HJ,Wang WZ,Yi GW,&Jia JH.(2015).The Tribological Properties of NiCr-Al2O3-TiO2 Composites at Elevated Temperatures.Tribology Letters,58(1),1(1-10).
MLA	Wang JY,et al."The Tribological Properties of NiCr-Al2O3-TiO2 Composites at Elevated Temperatures".Tribology Letters 58.1(2015):1(1-10).