Influence of Interfacial Diffusion on Mechanical Property of Vacuum Fusion Sinter (VFS) WC-Co Composite Coating  

作　　者：HUANG Xin-bo FAN Kang-qi SUN Qin-dong LIN Hua-chun JIA Jian-yuan 

机构地区：[1]School of Electromechanical Engineering, Xi＇an University of Engineering Science and Technology, Xi＇an 710048, Shaanxi, China [2]School of Electrical Engineering, Xi＇an Jiaotong University, Xi＇an, 710049, Shaanxi, China [3]School of Electromechanical Engineering, Xidian University, Xi＇an, 710071, Shaanxi, China [4]School of Computer Science and Engineering, Xi＇an University of Technology, Xi＇an 710049, Shaanxi, China [5]School of Electromechanical Engineering, Qingdao Technological University, Qingdao 266033, Shandong, China

出　　处：《Journal of Iron and Steel Research International》2006年第2期69-72,共4页

摘　　要：The WC-Co composite coatings bonded tightly to steel substrate have been made by vacuum fusion sinter （VFS）. The concentration distribution of some components were measured by the electron probe, and the microstructure and morphology of VFS coatings were observed and analyzed by SEM, X-ray diffractometer and microhardness tester. Diffusion coefficient of every element was calculated by using the experimental results. The influence of the interracial diffusion on the microstructure, Vickers hardness and interracial bond strength of the VFS coatings was studied in detail. The experimental results show that there is a metallurgical bond area between the VFS WC-Co coatings and the steel substrate. The VFS coatings are characterized by the gradient hardness of the interface and the high bond strength to the steel substate, both of which are beneficial to the improvement of the wear resistance and corrosion resistance.The WC-Co composite coatings bonded tightly to steel substrate have been made by vacuum fusion sinter （VFS）. The concentration distribution of some components were measured by the electron probe, and the microstructure and morphology of VFS coatings were observed and analyzed by SEM, X-ray diffractometer and microhardness tester. Diffusion coefficient of every element was calculated by using the experimental results. The influence of the interracial diffusion on the microstructure, Vickers hardness and interracial bond strength of the VFS coatings was studied in detail. The experimental results show that there is a metallurgical bond area between the VFS WC-Co coatings and the steel substrate. The VFS coatings are characterized by the gradient hardness of the interface and the high bond strength to the steel substate, both of which are beneficial to the improvement of the wear resistance and corrosion resistance.

关 键 词：vacuum fusion sintering WC-Co composite coating interracial diffusion bond strength 

分 类 号：TF124.5[冶金工程—粉末冶金]