Microstructure and wear properties of nickel-based surfacing deposited by plasma transferred arc welding
Microstructure and wear properties of nickel-based surfacing deposited by plasma transferred arc welding
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DOI：
10.1016/j.surfcoat.2012.05.125
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发表时间：
2013-08-15
影响因子：
5.4
通讯作者：
Zhou Wenlong
中科院分区：
文献类型：
--
作者：
Chen Guoqing;Fu Xuesong;Zhou Wenlong
采用等离子弧焊技术在AISI304 L不锈钢表面沉积镍基合金涂层。研究了涂层的组织结构和摩擦学性能。沉积时的显微组织主要由富镍的伽马(Ni，Fe)相、Cr7C3、CrB、Cr3C2、M23C6、Ni3B和Ni3Si组成。与304 L不锈钢基材相比，涂层的耐磨性有很大提高。磨损试验表明，磨损机理取决于磨损时间和外加载荷。磨损时间较短时，低载荷下的磨损机制为磨粒磨损，高载荷下的磨损机制为粘着磨损。当磨损时间较长时，低载荷下的磨损机制为粘着磨损和氧化磨损，高载荷下的磨损机制为疲劳磨损。(C)2012爱思唯尔B.V.保留所有权利。
Nickel-based alloy coating was deposited on AISI 304 L stainless steel substrate using plasma transferred arc welding (PTAW). Microstructure and tribological characteristics of the coating were studied. The as-deposited microstructure mainly consists of Ni-rich gamma (Ni, Fe) phase, Cr7C3, CrB, Cr3C2, M23C6, Ni3B, and Ni3Si. Compared with that of the 304 L stainless steel substrate, the wear resistance of the coating greatly improves. The wear test demonstrates that the wear mechanism depends on wearing time and applied load. When the wearing time is short, the wear mechanism is abrasive wear under low load and adhesive wear under high load. When the time is relatively long, the wear mechanisms are adhesive wear and oxidation wear under low load; fatigue wear appears under high load. (C) 2012 Elsevier B.V. All rights reserved.