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高速电弧喷涂Fe-Al/Cr₃C₂复合涂层的组织与性能

Microstructure and Properties of High Velocity Arc Spraying Fe-Al/Cr₃C₂ Coatings

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【Author】 XU Wei-pu~(1,2),XU Bin-shi~2,ZHANG Wei~2,WANG Wei-guo~3,DU Ling-zhong~1 (1.Welding Institute of Material Science and Engineering Department,Shanghai Jiaotong University, Shanghai 200030,China;2.National Key Laboratory for Remanufacturing,Beijing 100072,China; 3.Boiler Pressure Case Test Dept.of Shandong Taian,Taian Shandong 271000,China)

【机构】上海交通大学材料学院焊接所,装备再制造国防科技重点实验室,装备再制造国防科技重点实验室,山东泰安锅炉压力容器检验所,上海交通大学材料学院焊接所上海200030；装备再制造国防科技重点实验室,北京100072,北京100072,北京100072,山东泰安271000,上海200030；

【摘要】采用Fe Al/Cr3C2 粉芯丝材和高速电弧喷涂技术 (HVAS)原位合成了铁铝金属间化合物涂层 ,并研究了涂层的显微组织与性能。结果表明 ,高速电弧喷涂Fe Al/Cr3C2 涂层中生成了多种物相 ,主要是Fe3Al和FeAl相 ,同时还包括Fe3C硬质点相及FeO·Al2 O3和Cr2 O3氧化物相等。涂层具有很高的热震结合强度及相对基体较高的显微硬度 ,密度和孔隙率较低。更多还原

【Abstract】 Microstructure and properties of Fe-Al/Cr₃C₂ coatings in-situ synthesized by cored wire and high velocity arc spraying （HVAS） were investigated.The results show that there are many compositions,the main compounds are Fe₃Al and FeAl phases,there are also hard particles as Fe₃C and oxides as FeO·Al₂O₃ and Cr₂O₃.Moreover,HVAS Fe-Al/Cr₃C₂ coatings owe high heat tremble bond strength and relatively high microhardness,as well as low density and porosity.更多还原