激光熔覆镍基碳化钨涂层的研究进展  

Research progress of laser cladding nickel base tungsten carbide coating

作　　者：井培尧 王海军[1] 陈文刚[1] 陈龙[1] 尹红泽 吴华杰 宋文涛 JING Peiyao;WANG Haijun;CHEN Wengang;CHEN Long;YIN Hongze;WU Huajie;SONG Wentao(College of Machinery and Communication, Southwest Forestry University,Kunming 650224, China)

机构地区：[1]西南林业大学机械与交通学院,昆明650224

出　　处：《功能材料》2021年第4期4083-4089,共7页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51865053)。

摘　　要：激光熔覆是以高能量密度的激光束为热源在基体表面熔覆材料实现熔覆层与基体的冶金结合以到达改性或修复目的的技术。通过激光熔覆技术制备的镍基碳化钨涂层由于其具有较高的硬度以及优异的耐磨损、耐腐蚀特性,在工业领域应用广泛。首先介绍了镍基碳化钨涂层的特点与性能;之后从工艺参数、WC含量、加入纳米WC颗粒3个方面对影响镍基碳化钨涂层性能的因素进行了分类综述;同时,镍基碳化钨涂层中未熔融WC颗粒的分布不均匀性是目前影响涂层整体性能的主要缺陷,文章系统分析了改善该缺陷的几种方法。最后对镍基碳化钨涂层今后的研究重点进行了展望。Laser cladding is a technology to realize the metallurgical combination of the cladding layer and the matrix in the surface cladding material with high energy density laser beam as heat source to achieve the modification or repair purpose.Nickel-based tungsten carbide coating prepared by laser cladding is widely used in industry because of its high hardness,excellent wear resistance and corrosion resistance.Firstly,the characteristics and properties of nickel base tungsten carbide coating are introduced.Then,the factors affecting the properties of nickel-based tungsten carbide coating are classified and summarized from the three aspects of process parameters,WC content and the addition of nano WC particles.At the same time,the distribution inhomogeneity of unmelted WC particles in nickel-based tungsten carbide coating is the main defect affecting the overall performance of the coating at present.This paper systematically analyzes several methods to improve this defect.Finally,the future research emphasis of nickel base tungsten carbide coating is prospected.

关 键 词：激光熔覆 镍基碳化钨 性能 颗粒分布 不均匀性 

分 类 号：TG174.44[金属学及工艺—金属表面处理]