Influence of magnetic field on microstructure and properties of TiC/cobalt-based composite plasma cladding coating
Influence of magnetic field on microstructure and properties of TiC/cobalt-based composite plasma cladding coating
复制标题
磁场对TiC/钴基复合等离子体熔覆涂层组织与性能的影响
DOI：
10.1016/j.surfcoat.2017.07.009
复制
发表时间：
2017-09-25
影响因子：
5.4
通讯作者：
Liu, Jinna
中科院分区：
文献类型：
--
作者：
Li, Yang;Cui, Xiufang;Liu, Jinna
为了获得质量更好的冶金涂层，选择磁场技术与等离子熔覆联合收割机相结合。本文采用等离子熔覆技术，在外加磁场的作用下制备了TiC增强Co基复合材料涂层。研究了磁场对涂层组织、相组成、摩擦学性能和冲蚀磨损性能的影响。结果表明，在磁场作用下，涂层组织呈现出规则的结构，即在纵向磁场和横向磁场作用下，涂层中分别出现取向一致的枝晶和细小的等轴晶。在磁场的作用下，TiC颗粒得到细化和分散。复合涂层主要由γ-Co、TiC、Fe-Cr和[Fe，Ni]相组成，但在磁场涂层中检测到新相TiC-（Ti，W）C1-x。磁场涂层组织细小、TiC颗粒细化、弥散分布以及新相TiC-（Ti，W）C1-x的存在，使涂层具有较高的耐磨性和抗冲蚀磨损性能。(C)2017爱思唯尔B. V.保留所有权利。
In order to obtain better quality metallurgical coating, magnetic field technology is selected to combine with plasma cladding. In this study, TiC reinforced Co matrix composite layers were fabricated by plasma cladding with the influence of magnetic field. The effects of magnetic field on microstructure, phase composition, tribological behavior and erosion wear behavior of the coating were studied. Results indicate that the regular coating structure was observed with the effect of magnetic field, namely, the dendrites with the same orientation and fine equiaxed grains distribute in longitudinal magnetic field and transverse magnetic field coating, respectively. The TiC particles are refined and dispersive under the influence of magnetic field. The composite coating mainly consists of 7 gamma-Co, TiC, Fe-Cr and [Fe,Ni] phase, but the new phase TiC-(Ti,W)C1-x, is detected in magnetic field coatings. The fine microstructure, the refined and dispersive TiC and the new phase TiC-(Ti,W)C1-x lead to the higher anti-wear and anti-erosion properties in magnetic field coatings. (C) 2017 Elsevier B.V. All rights reserved.