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

作     者：WU Yaosha a , ZENG Dechang a , LIU Zhongwu a , QIU Wanqi a , YU Hongya a , ZHONG Xichun a , LI Shangzhou a , and MA Yuexin b a School of Materials Science & Engineering, South China University of Technology, Guangzhou 510640, China b Optoelectronic Engineering Department, Zhongshan Torch Polytechnic, Zhongshan 528436, China 

作者机构：School of Materials Science & Engineering South China University of Technology Guangzhou China Optoelectronic Engineering Department Zhongshan Torch Polytechnic Zhongshan China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2012年第31卷第2期

页      面：204-208页

核心收录：

学科分类：080503[工学-材料加工工程] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by Key Projects of the Guang-dong Provincial Science & Technology Program (Nos.2009A090100045 and 2010A090200077) Project of the Zhongshan Civic Science & Technology Program (No.20103A262) 

主　　题：surface science HVAA pseudo-alloy composite coating PS45/CuAl8 sliding wear microstructure 

摘      要：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 Al 2 O 3 , Cr 2 O 3 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.