Rare Metals

, Volume 31, Issue 2, pp 204–208 | Cite as

Microstructure and sliding wear behavior of pseudo-alloy PS45/CuAl8 composite coating sprayed by HVAA technique

  • Yaosha Wu
  • Dechang Zeng
  • Zhongwu Liu
  • Wanqi Qiu
  • Hongya Yu
  • Xichun Zhong
  • Shangzhou Li
  • Yuexin Ma
Article
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Abstract

A pseudo-alloy PS45/CuAl8 composite coating was sprayed on steel substrate by high-velocity activated arc spraying (HVAA) process. Its sliding wear behavior at room temperature was evaluated by M-2000 wear tester. For comparison, a single CuAl8 coating was also prepared and tested under the same conditions. It is found that the pseudo-alloy composite coating consists of α-Cu and γ-Ni metallic matrix phases together with homogenously distributed minor Al2O3, Cr2O3 oxide phases. Moreover, pseudo-alloy coating possesses much better sliding wear resistance than CuAl8 coating due to the enhanced hardness and microstructural homogenization. Fatigue wear and abrasive wear are responsible for the wear-down mechanism of the pseudo-alloy coating.

Keywords

surface science HVAA pseudo-alloy composite coating PS45/CuAl8 sliding wear microstructure 
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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Yaosha Wu
    • 1
  • Dechang Zeng
    • 1
  • Zhongwu Liu
    • 1
  • Wanqi Qiu
    • 1
  • Hongya Yu
    • 1
  • Xichun Zhong
    • 1
  • Shangzhou Li
    • 1
  • Yuexin Ma
    • 2
  1. 1.School of Materials Science & EngineeringSouth China University of TechnologyGuangzhouChina
  2. 2.Optoelectronic Engineering DepartmentZhongshan Torch PolytechnicZhongshanChina

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