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Tribological properties of lead-free Cu–FeS composites under dry sliding condition

Published online by Cambridge University Press:  07 November 2016

Guotao Zhang ,
Yanguo Yin  and
Jining Li
Guotao Zhang
Affiliation:
Institute of Tribology, Hefei University of Technology, Hefei 230009, People's Republic of China
Yanguo Yin*
Affiliation:
Institute of Tribology, Hefei University of Technology, Hefei 230009, People's Republic of China
Jining Li
Affiliation:
Institute of Tribology, Hefei University of Technology, Hefei 230009, People's Republic of China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Cu–FeS composites without lead were prepared by power metallurgy process. The friction and wear properties were examined on a “block-on-ring” testing machine under dry sliding conditions with and without oil immersion. Results showed that both the frictional coefficient and the wear volumes decreased with increased FeS content in the composite under dry sliding conditions. In the condition of dry friction without oil immersion, the FeS solid lubricating film formed and played a role of antifriction and adhesion resistance. Under the dry friction condition with oil immersion, the lubricant oil stored in the porous FeS layer precipitated to the surface to form the oil film, which could work together to achieve a liquid–solid synergistic lubrication with the FeS transfer film. The lubrication performance of the collaborative lubrication reaction is better than that of the solid transfer film. With the increase of FeS, the collaborative lubrication became more obvious.

Keywords

Cu–FeS compositesfriction and wearliquid–solid synergistic lubrication
Type
Articles
Information
Journal of Materials Research , Volume 32 , Issue 2 , 27 January 2017 , pp. 354 - 362
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Copyright
Copyright © Materials Research Society 2016 

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