Friction and wear properties and mechanism of bronze–Cr–Ag composites under dry-sliding conditions

Tribological properties of bronze–Cr–Ag composites sliding against AISI 52100 steel under dry-sliding conditions were investigated. The results show that the composite wear mechanisms include both adhesive and delamination. The additions of Cr and Ag improve the wear resistance and lubricating prope...

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Bibliographic Details
Published in:Tribology international 2016-04, Vol.96, p.132-140
Main Authors: Jin, Kongjie, Qiao, Zhuhui, Zhu, Shengyu, Cheng, Jun, Yin, Bing, Yang, Jun
Format: Article
Language:English
Subjects:
Bearing steels
BRONZES
Chromium
Chromium steels
COMPOSITES
Delaminating
Delamination
Dry-sliding
Friction
MECHANICAL PROPERTIES
PROPERTIES
Silver
Solid lubrication friction
STEELS
TRIBOLOGY
Wear
WEAR MECHANISMS
WEAR PROPERTIES
Wear resistance
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Summary:Tribological properties of bronze–Cr–Ag composites sliding against AISI 52100 steel under dry-sliding conditions were investigated. The results show that the composite wear mechanisms include both adhesive and delamination. The additions of Cr and Ag improve the wear resistance and lubricating properties of the composites simultaneously. The Cr reduces the shear failure of the composite surface. The large amount of Ag depositing on the frictional surfaces can weaken the friction and wear. However, the excess Cr and Ag are harmful to mechanical properties and compactness. This also aggravates the delamination wear of the composites. •The Cr and Ag improve wear resistance and tribological properties of the composites.•Cr improves hardness and strength thereby reducing the shear failure of composites.•The Ag distributing on the surface and counteface can weaken the friction and wear.•The excess Cr and Ag are harmful to compactness and aggravate the delamination wear.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2015.12.031