Tribological characteristics of compacted graphite cast iron in dry sliding condition  

作　　者：CHEN Yue ZHANG Yong-zhen ZHANG Ran-yang 

机构地区：[1]School of Material Science and Engineering,Henan University of Science and Technology, Luoyang 471003 ,Henan, P. R. China

出　　处：《China Foundry》2006年第1期16-25,共10页中国铸造（英文版）

基　　金：The subject is supported by National Natural Science Fundof China: 50432020 and The Innovation Fund forOutstanding Scholar of Henan Province: 0421000600

摘　　要：The dry sliding wear and friction behaviors of compacted graphite cast iron (C. G. iron) were analyzed. The influence of the operating conditions (i.e. velocity,pressure), chemical composition and microstructure on the dry sliding tribological characteristics of the cast iron was studied. The 3-D topographical properties and wear surface temperature characteristics of C. G. iron were discussed. The results suggested that, compared with spheroidal graphite cast iron (S. G. iron) and grey cast iron, C. G. iron has the lowest wear rate,the highest friction coefficient, the lowest attenuation quantity in friction coefficient and is suitable for brake materials. The wear resistance and friction coefficient of C. G. iron can be substantially increased by introducing alloy elements such as phosphorus. The good tribological properties of C. G. iron under dry sliding condition have been further explained from mechanism by analyzing the 3-D surface topography and temperature field of dry sliding surface of specimen.The dry sliding wear and friction behaviors of compacted graphite cast iron （C. G. iron） were analyzed. The influence of the operating conditions （i.e. velocity,pressure）, chemical composition and microstructure on the dry sliding tribological characteristics of the cast iron was studied. The 3-D topographical properties and wear surface temperature characteristics of C. G. iron were discussed. The results suggested that, compared with spheroidal graphite cast iron （S. G. iron） and grey cast iron, C. G. iron has the lowest wear rate,the highest friction coefficient, the lowest attenuation quantity in friction coefficient and is suitable for brake materials. The wear resistance and friction coefficient of C. G. iron can be substantially increased by introducing alloy elements such as phosphorus. The good tribological properties of C. G. iron under dry sliding condition have been further explained from mechanism by analyzing the 3-D surface topography and temperature field of dry sliding surface of specimen.

关 键 词：C. G. iron dry sliding friction-wear TRIBOLOGY 

分 类 号：TG[金属学及工艺]