摘要
基于团簇线判据优化设计Ni-Zr-Al合金成分的基础上,采用激光熔覆技术在AZ91 HP镁合金表面制备了Ni_(60.2)Zr_(33.8)Al_6合金涂层。结果表明,由于所设计的镍基合金具有低的熔点和良好的润湿性能,致使合金涂层与镁合金基体之间实现了良好的冶金结合。合金涂层主要是由非晶相,Ni_(21)Zr_8和Ni_(10)Zr_7金属间化合物构成。由于非晶和金属间化合物复合增强作用及其高的化学稳定性,致使合金涂层具有高的硬度、良好的耐磨和耐蚀性能。
Based on optimum design of Ni-Zr-Al alloy composition using the cluster line criterion, the Ni60.2Zr33.8Al6 alloy coating is prepared by laser cladding on the magnesium surface. The result shows that the excellent metallurgical bonding between the coating and substrate is formed due to low melting point and good wettability of the Ni-based alloy. The coating mainly consists of amorphous, Ni21Zr8 and Ni10Zr7 phases. The composite strengthening and high chemical stability make the coating exhibit high hardness, good wear and corrosion resistances.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2009年第8期2187-2191,共5页
Chinese Journal of Lasers
关键词
激光技术
激光熔覆
成分设计
镁合金
镍基合金
显微组织
性能
laser technique
laser cladding
composition design
magnesium alloy
Ni-based alloy
microstructure
properties
