摘要
采用低压等离子喷涂技术在310S不锈钢表面制备MoB/CoCr梯度涂层,然后对MoB/CoCr涂层进行激光重熔处理,对重熔后涂层的组织结构及性能进行了研究。研究结果表明,激光重熔后,涂层表面平整致密,截面的显微组织呈树枝晶—胞状晶—平面晶过渡;激光重熔过程中,微熔的310S基体元素与熔化的涂层元素发生对流扩散现象,涂层中出现Fe元素成分;激光重熔后,MoB/CoCr层的硬度明显提高。
MoB/CoCr gradient coatings were sprayed on 310S stainless steel using low pressure plasma spraying method,and then MoB/CoCr gradient coatings were laser remelted.The microstructure and property of MoB/CoCr coatings were studied.Results show that the surface morphology of MoB/CoCr coating is smooth and dense,cross sectional microstucture of MoB/CoCr gradient coatings consists of dentrite crystal,cystiform crystal and flat crystal from the surface to the bottom of coatings;There is convection-diffusion phenomena occurred between element of 310S stainless steel and that of coatings,Fe element appears in the coatings;Microhardness of MoB/CoCr coating increases obviously after laser remelting.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2012年第2期23-25,46,共4页
Surface Technology
基金
江西省自然科学基金项目(2010GQC0117)
江西省教育厅科技项目(GJJ12622)
江西省高校省级教改课题(JXJG-11-17-10)