Formation and properties of a Zr-based amorphous coating by laser cladding  

作　　者：Ning Zhang Ying Liu Wei Yang Shu-Jie Pang 

机构地区：[1]Key Laboratory of Aerospace Materials and Performance(Ministry of Education),School of Materials Science and Engineering,Beihang University,Beijing,100191,China

出　　处：《Rare Metals》2024年第4期1809-1814,共6页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51271008)。

摘　　要：(Zr_(0.53)Al_(0.1)Ni_(0.05)Cu_(0.3)Ti_(0.02))_(99)Y_1(at%)coating with amorphous layer of about 180μm thick was prepared on a steel substrate by using laser cladding method.The coating is compact and shows good metallurgical bonding with substrate.The microstructure,microhardness and corrosion behavior along the depth from the coating surface to the substrate were investigated.It is found that a gradient structure consisted of amorphous surface layer,amorphous-crystalline transitional layer and substrate is formed after the laser cladding.The microhardness and corrosion behavior exhibit variation with the microstructural evolution at different depths from the coating surface.The microhardness and corrosion resistance in 3.5 wt%NaCl solution of the amorphous surface layer are comparable to those of the as-cast Zr-based BMG with the same composition,and higher than those of the steel substrate.

关 键 词：Laser cladding Amorphous coating MICROSTRUCTURE HARDNESS Corrosion resistance 

分 类 号：TG174.4[金属学及工艺—金属表面处理] TG665[金属学及工艺—金属学]