Fabrication of in-situ TiC reinforced composite coating via plasma transferred arc process

作     者：黄诗铭 孙大干 王文权 徐红勇 刘帅 

作者机构：Key Laboratory of Automobile Materials of Ministry ofEducation School of Materials Science and Engineering Jilin University Changchun 130025. 

出 版 物：《China Welding》 (中国焊接（英文版）)

年 卷 期：2015年第24卷第2期

页      面：35-41页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Jilin Provincial Science and Technology Department (20130301003GX) 

主　　题：plasma transferred arc process in-situ TiC particles microstructures wear resistance 

摘      要：In this work, the in-situ TiC panicles reinforced composite coating was prepared by plasma transferred arc process on the surface of Q235 steel. Microstructures, phase composition and wear property of the coating were investigated. The results showed that the composite coating consisted mainly of T-Ni, TiC, Cr23C6, Cr7C3, Ni3Si, CrB, Cr5B3 and FeNi3 phases, and was characterized by fine TiC panicles embedded in Ni matrix. The wear resistance of composite coating was significantly improved compared with that of the steel substrate. The wear volume loss of the substrate was 443 mm3, which was about 9 times as that of in-situ TiC particles reinforced composite coating （49 mm3 ）. It is mainly attributed to the presence of chromium carbide particles and in-situ TiC particles and their favorable combination with Ni matrix.