A Comparison of Laser Cladding Ni-based Coating on an Aluminium Alloy with CO_2 Laser and Nd: YAG Laser

作     者：Liang Gongying Eric.T.T.Wong H.C.Man Xi’an Jiaotong UniversityXi’an, 710049 The Hong Kong PolytechnicUniversity, Hong Kong 

出 版 物：《International Journal of Plant Engineering and Management》 (国际设备工程与管理（英文版）)

年 卷 期：1997年第2卷第2期

页      面：25-31页

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

主　　题：laser surface treatment aluminium alloy segregation hardness 

摘      要：In this paper, a plasma sprayed coating (Ni Cr B Si) on an Al Si alloy surface was melted by a CO 2 laser and a Nd:YAG laser respectively. The difference on the outline of the melted zone, chemical composition and hardness distribution of the laser melted zones were investigated. Experimental results showed that samples treated by the Nd:YAG laser have a better cladding tendency, more uniform chemical composition and microhardness distribution. Samples treated by the CO 2 laser have larger compositional segregation and poorer microhardness distribution.