Microstructure, mechanical properties and tribological behavior of the low-pressure cold sprayed tin bronze-alumina coating in artificial seawater

Authors

Wenyuan Chen, University of Chinese Academy of Sciences, Chinese Academy Of Sciences
Yuan Yu, Chinese Academy Of Sciences
Anh Kiet Tieu, University of WollongongFollow
Junying Hao, Chinese Academy Of Sciences, University of Chinese Academy of Sciences
Long Wang, University of WollongongFollow
Shengyu Zhu, Chinese Academy Of Sciences, University of Chinese Academy of Sciences
Jun Yang, Chinese Academy Of Sciences, University of Chinese Academy of Sciences

RIS ID

139329

Publication Details

Chen, W., Yu, Y., Tieu, A. Kiet., Hao, J., Wang, L., Zhu, S. & Yang, J. (2020). Microstructure, mechanical properties and tribological behavior of the low-pressure cold sprayed tin bronze-alumina coating in artificial seawater. Tribology International, 142 105992-1-105992-11.

Abstract

CuSn5-Al₂O₃ composite coatings were deposited on aluminum alloy 7075-T651 substrate by the low-pressure cold spraying technique. The effects of Al₂O₃ content (0-30 wt%) in feedstock on the microstructure, mechanical properties and tribological behavior under artificial seawater condition of the coatings were investigated. The results showed that the densification, hardness and bonding strength of the coatings were improved by the work hardening of Al₂O₃ particles. The friction coefficients were found in reasonable values, depending on the employed testing counterparts. The wear rate of the coatings decreased when rubbing against the counterparts. The wear mechanisms were abrasive and corrosive wear.