摘要
为提高风电机组用316L不锈钢的硬度和耐磨性,采用激光熔覆技术在304不锈钢表面制备316L-10%Nb-5%Cr3C2金属基复合涂层。系统研究了复合涂层的相组成、组织形貌、元素分布、显微硬度及耐磨性能。结果表明:复合涂层的相组成为γ-Fe、Fe-Cr固溶体、NbC陶瓷颗粒及Cr7C3。316L-10%Nb-5%Cr3C2复合涂层的显微硬度显著高于316L熔覆层,约为(394±10.7)HV0.3,约为316L熔覆层的1.65倍。磨损试验表明,在干滑动条件下复合熔覆层的耐磨性相较于316L熔覆层提高了约2倍。复合熔覆层的磨损机制为单一的磨粒磨损。
In order to improve the hardness and wear resistance of 316L stainless steel coating,316L-10%Nb-5%Cr3C2 metal matrix composite coating was prepared on 304 stainless steel surface by laser cladding technol‐ogy.The phase composition,microstructure,element distribution,microhardness and wear resistance of the com‐posite coating were studied systematically.The results show that the composite coating consists ofγ-Fe,Fe-Cr solid solution,NbC ceramic particles and Cr7C3.The microhardness of 316L-10%Nb-5%Cr3C2 composite coating is significantly higher than that of 316L coating,which is about(394±10.7)HV0.3,about 1.65 times of 316L coat‐ing.The wear test shows that the wear resistance of the composite cladding is about 2 times higher than that of the 316L coating under dry sliding condition.The wear mechanism of composite cladding layer is abrasive wear.
作者
赵群
赵晋芳
朱爽
王琳
ZHAO Qun;ZHAO Jinfang;ZHU Shuang;WANG Lin(School of Mechanical Engineering,Shenyang Institute of Engineering,Shenyang 110870,China;School of Civil Aviation,Shenyang Aerospace University,Shenyang 110870,China)
出处
《粉末冶金工业》
CAS
北大核心
2023年第4期75-80,105,共7页
Powder Metallurgy Industry
基金
国家自然科学基金资助项目(62001312)
辽宁省教育厅科学研究经费项目(LJKZ21093,JYT2020122)。
