KH-550型硅烷增强处理AZ31镁合金  

Surface Treatment of AZ31 Magnesium Alloy with KH-550 Silane

作　　者：张微[1,2] 文涛[1] 

机构地区：[1]重庆工学院材料科学与工程学院,重庆400050 [2]重庆大学材料科学与工程学院,重庆400030

出　　处：《涂料工业》2009年第5期63-65,共3页Paint & Coatings Industry

基　　金：重庆市教育委员会科学技术研究项目KJ080627资助

摘　　要：采用KH-550硅烷溶液对AZ31镁合金试片进行硅烷处理,形成一层无色透明的有机硅薄膜。通过盐水浸泡和电化学测试技术对不同硅烷浓度下所制备的硅烷膜性能进行评定,结果表明,在浓度为8%的硅烷溶液中浸涂50 s,表干后在100℃陈化0.5 h,所形成的硅烷膜层与镁合金基体之间的界面结合较好,很好地抑制了镁合金的腐蚀,提高了其耐腐蚀性能。AZ31 magnesium alloy was surface treated with KH -550 silane solutions, forming a colorless and transparent silane film, salt solution immersion and polarization tests were conducted to investigate the corrosion behavior of the coated magnesium alloy treated by five silane solutions with different silane concentrations. The results indicated that when the concentration of KH -550 was 8%, the immersion time 50 s, and heated at 100 ℃ for 0.5 h after surface dry, the interracial bonding strength between the prepared silane film and AZ31 magnesium alloy was excellent, and the corrosion resistance of magnesium alloy was greatly improved by silane treatment.

关 键 词：AZ31镁合金 硅烷处理 腐蚀形貌 极化曲线 耐蚀性 粘结强度 

分 类 号：TQ639.1[化学工程—精细化工]