7A09超高强度铝合金超音速火焰喷涂WC涂层  

Sprayed WC coating on 7A09 high strength aluminum alloy by high-velocity-air-fuel

作　　者：王江慧 张治民[1] Wang Jiiinghui;Zhang Zhiniin(School of Materials Science and Engineering, North University of China, Taiyuan Shanxi 030051 , China)

机构地区：[1]中北大学材料科学与工程学院,山西太原030051

出　　处：《金属热处理》2019年第5期193-195,共3页Heat Treatment of Metals

基　　金：山西省自然科学基金(201701D121082)

摘　　要：以7A09超高强铝合金为基体,采用超音速火焰喷涂技术(HVAF)将WC粉末喷涂在基材表面,对不同喷距制备的涂层的结合强度,物相组成,微观形貌进行研究。结果表明,不同喷涂制备的涂层结合强度均较好,物相组成差异不明显,喷距在180 mm时孔隙率较低,显微硬度较高。Coating was prepared by spraying WC powder on 7 A09 high strength aluminum alloy surface by high-velocity-air-fuel( HVAF)technique.The bonding strength,phase composition and microstructure of the coatings prepared with different spraying distances were investigated.The results show that the bonding strength of the coatings prepared by different spraying is good,the phase composition difference of the coatings is not obvious,the porosity is lower and the microhardness is higher at the spraying distance of 180 mm.

关 键 词：7A09铝合金 超音速火焰喷涂 涂层 结合强度 显微硬度 

分 类 号：TG174.442[金属学及工艺—金属表面处理]