摘要
以Nb、AlN和Ni粉为原料,在不锈钢表面采用激光熔覆技术制备了NbN增强Ni基复合涂层。利用X射线衍射仪、扫描电镜和能谱仪对复合涂层的显微组织进行了分析,利用显微硬度计和摩擦磨损试验机,对复合涂层的相关性能进行了测试和分析。结果表明,NbN呈不规则条状、块状分布,涂层硬度较高,且在室温干滑动磨损试验条件下涂层具有良好的耐磨性能。
NbN reinforced Ni-based composite coating was successfully in-situ synthesized by laser cladding on stainless steel surface using Nb, Al N and Ni alloy powders as the material. The microstructure analysis of the coating was performed with XRD, SEM and energy-dispersive X-ray spectroscopy, microhardness tester and wear tester were used to test and analyze relevant properties of the composite coating. The results show that, Nb N phase uniformly disperses as irregular strip and block. The micro-hardness of the coating is higher than the steel substrate. The coating presentes excellent wear resistance under the condition of dry sliding wear test at room temperature.
出处
《热加工工艺》
CSCD
北大核心
2015年第14期207-209,213,共4页
Hot Working Technology
基金
上海市教委科研创新项目(13YZ113)
上海市自然科学基金资助项目(13ZR1455400
12ZR1444500)
国家质检总局科技计划项目(2012QK027)
关键词
激光熔覆
原位合成
NBN
耐磨性
laser cladding
in-situ synthesized
NbN
wear reisitance
