Effect of molybdenum on the microstructure and corrosive wear resistance of laser clad Ni-based coatings  

作　　者：张平 原津萍 盂令东 赵军军 乔玉林 刘操 

机构地区：[1]National Key Laoratory for Remanufacturing,Academy of Armored Forces Engineering, Beijing, 100072.

出　　处：《China Welding》2010年第1期43-47,共5页中国焊接（英文版）

基　　金：This research was supported by National Natural Science Foundation of China （50775221）.

摘　　要：Five kinds of Ni-based coatings with 0 wt% , 2. 5 wt% , 5.0 wt% , 7.5 wt% and 10. 0 wt% molybdenum were prepared on 45CrNi steel plates by using laser cladding technique. The effect of Mo on the microstructure of Ni-based coatings was investigated by using scanning electron microscopy. The corrosive wear resistance and the corrosion resistance of five coatings were tested. The results show that the corrosive wear resistance of the coating with 5.0 wt% Mo is better than those of other coatings. During the corrosive wear process, the corrosion and wear effects are combined. The corrosive wear resistance is closely related to the microstructure of the coating.Five kinds of Ni-based coatings with 0 wt% , 2. 5 wt% , 5.0 wt% , 7.5 wt% and 10. 0 wt% molybdenum were prepared on 45CrNi steel plates by using laser cladding technique. The effect of Mo on the microstructure of Ni-based coatings was investigated by using scanning electron microscopy. The corrosive wear resistance and the corrosion resistance of five coatings were tested. The results show that the corrosive wear resistance of the coating with 5.0 wt% Mo is better than those of other coatings. During the corrosive wear process, the corrosion and wear effects are combined. The corrosive wear resistance is closely related to the microstructure of the coating.

关 键 词：laser cladding Ni-based alloy corrosive wear 

分 类 号：TG174.44[金属学及工艺—金属表面处理] TQ085.4[金属学及工艺—金属学]