Tribological property and wear mechanism of undercooled Ni-Pb monotectic alloys

来源期刊:中国有色金属学报(英文版)2004年第6期

论文作者:谢辉 杨根仓 郝维新 喇培清 刘维民 许丽君

文章页码:1134 - 1138

Key words:Ni-Pb monotectic alloy; high undercooling; wear rate; wear mechanism

Abstract: The tribological properties of Ni-31.44%Pb monotectic alloys were measured by using a SRV reciprocating tribo-tester. The effects of load, sliding speed and melt undercooling on wear rate of the sample were investigated. The worn surface of Ni-31.44%Pb was examined using scanning electron microscope (SEM) and X-ray photoelectron spectroscope (XPS). The results show that the wear properties of the samples undercooled by 80K and 310K are obviously superior, which is attributed to more efficient transfer of Pb from the bulk material to the worn surface. The lubricating film is identified as a mixture of Ni2O3 and PbO by XPS analysis. At the same load and sliding speed, the predominant wear mechanisms can be identified as oxidative wear for the lower and larger undercooling, and plastic deformation and fracture for the medium undercooling.

基金信息:the National Natural Science Foundation of China

有色金属在线官网  |   会议  |   在线投稿  |   购买纸书  |   科技图书馆

中南大学出版社 技术支持 版权声明   电话:0731-88830515 88830516   传真:0731-88710482   Email:administrator@cnnmol.com

互联网出版许可证:(署)网出证(京)字第342号   京ICP备17050991号-6      京公网安备11010802042557号