Metallographic Analyses of Laser Gladded WC-Ni and WC-Co Hard-facing Metals

作     者：HK Chikwanda M Chiremba C Van Rooyen 

作者机构：Department of Chemical &Metallurgical Engineering Tshwane University of Technology Pretoria South Africa.Department of Chemical &Metallurgical Engineering Tshwane University of Technology Pretoria South Africa.National Laser Centre CSIR Pretoria South Africa 

出 版 物：《材料热处理学报》 (Transactions of Materials and Heat Treatment)

年 卷 期：2004年第25卷第5B期

页      面：996-999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）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：the National Laser Centre at CSIR and the Department of Chemical and Metallurgical Engineering at TUT 

主　　题：激光包覆 衬底合金 包覆高度 包覆深度 WC-Ni WC-Co 

摘      要：Laser cladding is performed to improve the surface properties of metallic machine components. Extensive work is being conducted to investigate the relationships among the cladding parameters, clad powder characteristics and the quality of the clad layer. This work presents some of the metallographic analyses results of WC -Ni and WC-Co clad layers. The clad layers are characterised with non-uniform carbide particles, mostly WC imbedded in a more ductile matrix. The transition from the clad layer to the substrate metal had a distinct dilution zone. The ratio of this zone to the clad height was in the range of 10 -12% and this still needs to be refined.