Tribological performance and scuffing behaviors of several automobile piston rings mating with chrome-plated cylinder liner  

作　　者：Zeyu MA Ruoxuan HUANG Xiaoshuai YUAN Yan SHEN Jiujun XU 

机构地区：[1]Department of Materials Science and Engineering,Dalian Maritime University,Dalian 116026,China [2]China North Engine Research Institute(Tianjin),Tianjin 300400,China [3]Marine Engineering College,Dalian Maritime University,Dalian 116026,China [4]Key Lab of Ship-Machinery Maintenance&Manufacture,Dalian Maritime University,Dalian 116026,China

出　　处：《Friction》2022年第8期1245-1257,共13页摩擦（英文版）

基　　金：This research was supported by the Natural Science Foundation of Liaoning Province(2019-ZD-0165 and 2020-HYLH-47);the China Postdoctoral Science Foundation(2020M670729);the National Natural Science Foundation of China(51979018).

摘　　要：The friction and wear properties,as well as the scuffing resistance,of different piston-ring coatings mating with a chrome-plated cylinder liner were investigated.Interrupted wear tests under the lubricant starvation condition were conducted to examine the wear behavior of Cr-diamond coating(GDC)and diamond-like coating(DLC).The results indicated that the DLC coating had outstanding tribological properties(small coefficient of friction and wear loss)at 150°C,while the GDC coating exhibited better performance at an elevated temperature(240°C).The DLC coating had a better scuffing resistance;no material adhesion occurred for 70 min under the unlubricated condition.The interrupted wear behaviors revealed that the scuffing process of the GDC coating involved the consumption of lubricant oil with relatively stable wear,a reduction in the friction force,and the occurrence of scuffing,in sequence.In contrast,although the friction force also increased after a short period of weak friction,no scuffing was observed.This is attributed to the formation of a mixed oxide and graphitic C tribolayer.

关 键 词：chrome-plated cylinder liner piston ring SCUFFING Cr-diamond coating(GDC) diamond-like coating(DLC) 

分 类 号：TH117[机械工程—机械设计及理论]