镍基合金表面激光熔覆钴基合金涂层的性能研究  

Study on properties of laser cladding co-based alloy coating on ni-based alloy surface

作　　者：林坤[1] 张爱琴[1] 张建广 史秀宝 LIN Kun;ZHANG Aiqin;ZHANG Jianguang;SHI Xiubao(School of Aviation Manufacturing Engineering,Xi’an Aeronautical Polytechnic Institute,Xi’an 710089,China)

机构地区：[1]西安航空职业技术学院航空制造工程学院,陕西西安710089

出　　处：《粘接》2023年第8期119-121,共3页Adhesion

基　　金：陕西省教育厅科研计划项目(项目编号:21JK0705);西安航空职业技术学院科研计划项目(项目编号:21XHZK-12)。

摘　　要：为提高Inconel600镍基合金硬度和耐磨性,利用钴基合金硬度高、耐磨性好、抗高温的性能,结合激光熔覆技术的熔覆层组织致密、熔覆性能优良、稀释率小、与基体结合好和变形小的优势,在镍基合金基材表面采用同步送粉的方式熔覆钴基合金粉末耐磨涂层,研究对涂层性能影响。通过改变激光功率和搭接率对试件进行熔覆,经对熔覆层表面和截面的显微硬度的检测,与基材原本截面显微硬度的比较。结果表明:搭接率的变化直接影响熔覆层的厚度及平整度,在Inconel600镍基合金表面熔覆耐磨钴基材料后大幅提升其硬度性能,熔覆层硬度是基体硬度的2.8倍,显著提高了熔覆层的硬度和耐磨性能,达到表面改性的目的。In order to improve the hardness and wear resistance of Inconel600 nickel-based alloy,the wear-resistant coating of cobalt-based alloy powder was coated by synchronous powder feeding on the surface of nickel-based alloy substrate by taking advantage of the high hardness,good wear resistance and high temperature resistance of cobalt-based alloy and the advantages of laser cladding,such as compact microstructure,excellent cladding performance,small dilution rate,good bonding with matrix and small deformation to study the factors affecting the coating performance.By changing the laser power and lapping rate,the specimens were cladding,and the microhardness of the surface and section of the cladding layer was detected and compared with that of the original section of the substrate.The results show that the thickness and flatness of the cladding layer are directly affected by the change of lap rate.The hardness of the cladding layer is 2.8 times that of the substrate after the surface of Inconel600 nickel-based alloy is coated with wear-resistant cobalt-based material,which significantly improves the hardness and wear resistance of the cladding layer and achieves the purpose of surface modification.

关 键 词：镍基合金 钴基合金涂层 激光熔覆 熔覆层厚度 显微硬度 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TQ153[金属学及工艺—金属学]