Wear Properties and Scuffing Resistance of the Cr-Al2O3 Coated Piston Rings: The Effect of Convexity Position on Barrel Surface

被引：11

作者：

Ma, Siqi ^{[1
]}

Chen, Wenbin ^{[1
]}

Li, Chengdi ^{[1
]}

Jin, Mei ^{[1
]}

Huang, Ruoxuan ^{[2
]}

Xu, Jiujun ^{[1
]}

机构：

[1] Dalian Maritime Univ, Key Lab Ship Machinery Maintenance & Mfg, Dalian 116026, Peoples R China

[2] Dalian Maritime Univ, Dept Mat Sci & Engn, Dalian 116026, Peoples R China

来源：

JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME | 2019年 / 141卷 / 02期

关键词：

convexity offset rate; barrel surface; scuffing resistance; tribological performance; FRICTION; LINER; BEHAVIOR; TEMPERATURE; EFFICIENCY; COATINGS; ENGINES;

D O I：

10.1115/1.4041215

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This work investigates the effect of convexity position of ring barrel surface on the wear properties and scuffing resistance of the Cr-Al2O3 coated piston rings against with the CuNiCr cast iron cylinder liner. The scuffed surface morphology and elements distribution as well as the oil film edge were analyzed to explore the influencing mechanism of the convexity position on the scuffing resistance. The results show that the convexity offset rate on the barrel surface of the ring has no noticeable influence on both friction coefficient and wear loss near the dead points, but a suitable convexity position will result in the improved scuffing resistance. The shape of the barrel face not only affects the worn area on the ring, but also determines the oil film wedge and pressure distribution, consequently influences the scuffing resistance.

引用

页数：8

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