文献类型：期刊文献

中文题名：6061铝合金表面γ-APS协同稀土镧盐复合膜的性能

英文题名：Properties of γ-APS Synergized Silane-Lanthanum Salt Composite Film on 6061 Aluminum Alloy

作者：李春玲[1];张伟娜[1,2];李红玲[3]

第一作者：李春玲

机构：[1]商丘医学高等专科学校公共学科部;[2]郑州大学化学与分子工程学院;[3]新乡学院化学化工学院

第一机构：商丘医学高等专科学校公共学科部,河南商丘476000

年份：2018

卷号：51

期号：6

起止页码：15-19

中文期刊名：材料保护

外文期刊名：Materials Protection

收录：CSTPCD;;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：河南省科技发展计划项目(182102310611);河南省高等学校青年骨干教师培养计划项目(2017GGJS282)资助

语种：中文

中文关键词：硅烷-镧盐复合膜;6061铝合金;极化电阻;划格法;耐蚀性;结合力

外文关键词：silane-lanthanum salt composite film;6061 aluminum alloys;polarization resistance;lattice method;corrosion resistance;binding force

摘要：单一硅烷转化膜对金属基体的保护不足,稀土处理可对硅烷转化膜进行改性。以硅烷γ-APS协同稀土镧盐处理6061铝合金板材,在硅烷基础溶液中添加不同含量的稀土硝酸镧对6061铝合金进行转化处理,采用电化学方法和硫酸铜点滴方法,研究了硝酸镧含量对铝合金基体表面γ-氨丙基三乙氧基硅烷(KH-602)硅烷膜耐蚀性能的影响,通过划格法和模拟大气腐蚀研究复合膜、硅烷膜试样、镧盐钝化膜试样与有机涂层间的结合力。结果表明:在KH-602硅烷基础溶液中添加15 g/L硝酸镧时硅烷镧盐复合膜的耐蚀性和结合力最好;复合膜主要由S,O,Si,Al,La元素组成,其中La元素含量明显高于单一稀土转化膜;与硅烷膜、镧盐转化膜相比,复合膜表现出很好的耐蚀性。
A single silane film still lacks the protection on metal substrate, and so the silane film could be post-treated by rare-earth salts. The 6061 aluminum alloy plates were conversion-treated by silane γ-APS solution with various content of lanthanum nitrate. The effect of the con- tent of lanthanum nitrate on corrosion resistance of the gamma-aminopropyhriethoxysilane （KH-602） film on 6061 alloy surface was studied by using electrochemical method and copper sulfate method. Moreover, the bonding strength between the composite film sample, the silane film sample, the lanthanum salt conversion film sample and the organic coating was studied by means of the lattice method and simulating atmos- pheric corrosion. Results showed that with adding 15 g/L lanthanum nitrate solution in based KH-602 silane, the silane-lanthanum salt com- posite film had better con＇osion resistance and adhesion. The composite film was mainly composed of S, O, Si, A1 and La element, and the ratio of La elements in films was obviously higher than that in single rareearth conversion film. Compared with single silane film and single rare-earth conversion film, the composite film had the better corrosion resistance.