预处理对铝合金喷涂层丝状腐蚀性能的影响  

Effect of Pretreatment on Filiform Corrosion Properties of Aluminum Alloy Spraying Coating

作　　者：杨波 曲凤娇 肖宝靓 尤媛 张东 YANG Bo;QU Feng-jiao;XIAO Bao-Liang;YOU Yuan;ZHANG Dong(Liaoning Zhongwang Group Co.,Ltd.,Liaoyang Liaoning 111003,China)

机构地区：[1]辽宁忠旺集团有限公司,辽宁辽阳111003

出　　处：《热处理技术与装备》2020年第2期31-34,共4页Heat Treatment Technology and Equipment

摘　　要：选择铬化和无铬化预处理对6063-T6、6082-T6和6005A-T6三种铝合金进行静电粉末喷涂,通过丝状腐蚀试验研究预处理工艺对不同铝合金喷涂层耐丝状腐蚀性能的影响。结果表明:铬化处理会减少丝状腐蚀的生成,延缓丝状腐蚀的生长;与6082和6005A铝合金喷涂层相比,6063铝合金喷涂层具有更好的耐丝状腐蚀性能。Spraying coatings of three kinds of aluminium alloys 6063-T6,6082-T6 and 6005A-T6 were preparated by electrostatic powder sprayed with chromate-free and chromate pretreatment respectively.The effect of pretreatment methods on filiform corrosion resistance of different aluminium alloys was investigated by filiform corrosion test.The results show that the chromate pretreatment will reduce the formation of filiform corrosion,and delay the growth of filiform corrosion.The 6063 aluminum alloy has been better resistance to filiform corrosion than 6082 and 6005A aluminum alloy.

关 键 词：预处理 丝状腐蚀 铝合金 

分 类 号：TG178[金属学及工艺—金属表面处理]