Fe基非晶纳米晶电弧喷涂层的摩擦磨损行为  

Tribological Behavior of Fe-based Coatings Containing Amorphous Phase Deposited by Supersonic Arc Spraying

作　　者：马晓琳[1] 周勇[1] 

机构地区：[1]西安石油大学材料科学与工程学院,陕西西安710065

出　　处：《润滑与密封》2016年第4期78-81,共4页Lubrication Engineering

基　　金：西安石油大学博士基金项目(134010189)

摘　　要：利用超电弧喷涂技术在20#钢基体上制备含有非晶纳米晶的铁基涂层。采用扫描电镜分析涂层的组织形貌,用X射线衍射分析涂层的相结构,并对涂层与基体20#钢在干摩擦条件下的摩擦学性能进行对比研究。结果表明:Fe基非晶纳米晶涂层中含有非晶相和纳米相,孔隙率较低,具有较高的硬度;相同条件下,涂层的摩擦因数较小,磨损量较小,涂层的耐磨性优于20#钢;20#钢基体的磨损失效形式为黏着磨损,而Fe基非晶纳米晶涂层的失效形式开始时是疲劳磨损,随着粒子的脱落,失效形式就变为磨粒磨损。Fe-based coatings containing amorphous and nanocrystalline was prepared on 20 steel substance by supersonic arc spraying. SEM were used to analyze the surface morphologies of the coatings,X-ray diffraction were employed to examine the structure and phases of the coatings. The friction properties of coating and 20 steel substrate under dry sliding were studied and compared. The results show that the prepared Fe-based coating containing amorphous and nanocrystalline is fully dense with low porosity and higher microhardness. The friction coefficient of Fe-based coating is lower and the wear resistance is better than that of 20 steel. The wear failure of 20 steel is adhesive wear,and the wear failure of Fe-based coating is fatigue wear at first,and then abrasive wear as the particles fall off

关 键 词：电弧喷涂 Fe基涂层 非晶相涂层 摩擦磨损 

分 类 号：TH117.1[机械工程—机械设计及理论]