Effect of Cu-Sn Coating on Frictional Properties of Nodular Cast Iron Cylinder Liner

被引：0
|
作者：
Li B. [1 ]
Shen Y. [1 ]
Li C. [1 ]
Jin M. [1 ]
Zhu F. [1 ]
Xu J. [1 ]
机构：
[1] Key Laboratory of Ship-Machinery Maintenance and Manufacture, Dalian Maritime University, Dalian
来源：
Xu, Jiujun (xu.jiujun@163.com) | 1600年 / Chinese Society for Internal Combustion Engines卷 / 35期
关键词：
Friction and wear properties; Nodular cast iron cylinder liner; Piston rings with Cu-Sn coating;
D O I：
10.16236/j.cnki.nrjxb.201705066
中图分类号：
学科分类号：
摘要：
In order to investigate the friction and wear problems between honed nodular cast iron cylinder liner and piston rings with Cu-Sn coating at the heavy duty conditions, piston rings with Cr coating and Cu-Sn/Cr coating were tested on a piston ring reciprocating liner test rig. Friction coefficient and cylinder wear loss were measured, and then the surface topography and chemical elements were analyzed to discuss the effect of Cu-Sn coating on the tribological properties. Results show that compared with the Cr coating, friction coefficient and cylinder wear loss of the Cu- Sn/Cr coating matched cylinder liner decrease by 2.6% and 51.8% respectively. The worn surface morphology of the cylinder liner presents the flat asperities, which forms a more regular platform structure. The Cu-Sn coating patches of the piston ring are embedded into the cylinder liner surface. It is helpful to form a chemical reaction film on the frictional surface, improve the contact and friction states among the asperities and promote the tribological properties of the nodular cast iron cylinder liner. © 2017, Editorial Office of the Transaction of CSICE. All right reserved.
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页码：473 / 479
页数：6
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