Friction and wear properties of PM cam materials with different boron contents  

作　　者：Rui Wang Lin-Shan Wang Xue-Bing Liang Wang Zhang Yan-Ru Mu Jing-Jie Xu Li-Min Wang Shao-Ming Zhang 

机构地区：[1]General Research Institute for Nonferrous Metals,Beijing 100088,China [2]GRIPM Advanced Materials Co.Ltd,Beijing 101407,China [3]Beijing Hengyuantianqiao Powder Metallurgy Co.Ltd,Beijing 101407,China [4]Beijing Engineering Research Center for Metal Powder,Beijing 101407,China

出　　处：《Rare Metals》2023年第12期4255-4263,共9页稀有金属（英文版）

基　　金：financially supported by the National High-tech R&D Program (No.2013AA031101);the Major Science and Technology Projects (No.2012ZX04009011);the Technology Project of Huairou District in Beijing (No.2017-8)。

摘　　要：In this study,effects of B addition on the sintering densification,microstructure,hardness,friction and wear properties of sintered Fe-2.4C-4Cr-1Mo-0.5P-0.7Si-2.5Cu(in wt%)were investigated.In spite of the decreased sintered density,the addition of B changes the phase composition of the materials and their ratio.Moreover,hardness of either the matrix or the liquid solidification structure dramatically increases.These changes in micro structure result in higher friction coefficient and lower wear loss.It is observed that the addition of0.1 wt%B offers the optimum friction and wear properties with a running-in period of only 30 s and wear volume loss of 0.006 mm^(3) under the testing conditions.Such friction and wear properties are superior to those of the other two widely used cam materials,cast iron and 45 steel.

关 键 词：Boron addition Friction and wear property Cam material MICROSTRUCTURE Wear mechanism 

分 类 号：TH132.47[机械工程—机械制造及自动化]