Friction and Wear Characteristics of Hot-Pressed NiCr-Mo/MoO3/Ag Self-Lubrication Composites at Elevated Temperatures up to 900 ℃

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

	Friction and Wear Characteristics of Hot-Pressed NiCr-Mo/MoO3/Ag Self-Lubrication Composites at Elevated Temperatures up to 900 ℃
	Wang JY(汪建义)1,2; Shan Y(陕钰)1 ; Guo HJ(国洪建)1,2 ; Li B(李博)1; Wang WZ(王文珍)1 ; Jia JH(贾均红)1 ; Jia JH(贾均红)
刊名	Tribology Letters
	2015
卷号	59 期号:3 页码:48(1-16)
关键词	NiCr-based composite Tribological properties High temperature Tribo-chemical reaction
ISSN号	1023-8883
通讯作者	贾均红
英文摘要	NiCr-based high-temperature self-lubricating composites with Ag/Mo/Ag–MoO₃/Ag–Mo were prepared by the powder metallurgy method, respectively. The mechanical and tribological properties of the composites rubbing against alumina balls were investigated from room temperature to 900 ℃. The tribo-chemical reaction films formed on the sliding surface and their effects on the tribological properties of composites at different temperatures were analyzed by SEM and Micro-Raman. The results showed that the triboloical properties of NiCr-based composites were improved by adding alloying elements or a solid lubricating phase; meanwhile, the composites containing Ag–MoO₃ or Ag–Mo exhibited even better triboloical properties than those with Mo or Ag at high temperatures. The lowest friction coefficient of the NCr–MoO₃–Ag composite is around 0.19 and that of the NiCr–Mo–Ag composite is around 0.20; both composites exhibited an optimal wear rate in the order of magnitude of 10⁻⁶ mm³ N⁻¹ m⁻¹ at high temperatures. XRD and Micro-Raman results indicated that the composition of the tribo-layers formed on the worn surface of the composites varies with different testing temperatures. Compounds such as Ag₂MoO₄, NiCr₂O₄ and NiO, which formed on the rubbing surface at high temperature, worked synergistically to improve the tribological properties of the NiCr-based composite at high temperatures.
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;51471181;51175490)
语种	英语
WOS记录号	WOS:000360551600011
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/18592]
专题	兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Jia JH(贾均红)
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. Friction and Wear Characteristics of Hot-Pressed NiCr-Mo/MoO3/Ag Self-Lubrication Composites at Elevated Temperatures up to 900 ℃[J]. Tribology Letters,2015,59(3):48(1-16).
APA	Wang JY.,Shan Y.,Guo HJ.,Li B.,Wang WZ.,...&贾均红.(2015).Friction and Wear Characteristics of Hot-Pressed NiCr-Mo/MoO3/Ag Self-Lubrication Composites at Elevated Temperatures up to 900 ℃.Tribology Letters,59(3),48(1-16).
MLA	Wang JY,et al."Friction and Wear Characteristics of Hot-Pressed NiCr-Mo/MoO3/Ag Self-Lubrication Composites at Elevated Temperatures up to 900 ℃".Tribology Letters 59.3(2015):48(1-16).