铝合金氧化膜的铝溶胶封孔工艺研究  

Aluminium Sols Sealing of Al Alloy Anodized Film

作　　者：孙玉凤[1] 周琦[1] 赫先醒[1] 才庆魁[2] 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159 [2]沈阳大学辽宁省先进材料制备技术重点实验室,辽宁沈阳110044

出　　处：《电镀与精饰》2011年第7期10-12,43,共4页Plating & Finishing

基　　金：辽宁省教育厅项目(2008S202)

摘　　要：用铝溶胶对铝合金阳极氧化膜进行封孔处理是无铬、无氟并且无重金属的绿色环保新技术。通过双因素的方差分析和极差分析研究了异丙醇铝溶胶封闭膜耐酸性溶液腐蚀、耐盐雾和封闭膜的染色性能。通过正交试验研究了硝酸铝溶胶的染色性和耐酸性点滴液腐蚀的性能。试验在室温下,用低浓度且pH小于5的能稳定保存的两种铝溶胶进行的,封闭后膜层未经水洗,该工艺具有耗能小,封闭工艺简单的优点。试验结果表明,异丙醇铝溶胶的封闭膜性能优于硝酸铝溶胶膜,两种溶胶封闭膜耐酸性介质的腐蚀性能都优于蒸馏水封孔。Chromium-free,fluorin-free and heavy metal-free aluminium sols sealing a new environmental-friendly green technology was used for sealing Al alloy anodized film.Corrosion resistance in acid solution and in salt spray and dyeing property of the film sealed by aluminium isopropoxide sol were studied by range and variance analyses.Corrosion resistance in acidic dropping test and dyeing property of the film sealed by aluminium nitrate sol were also studied by orthogonal test.All the experiments were carried out at room temperature and in lower concentration,lower pH sols（5 for keeping the sols stable）,and the sealed film needn＇t water rinsing,so this technology was simple and with lower energy consumption.Comparing the two sols,properties of the film sealed by aluminium isopropoxide sol is better than that by aluminium nitrate sol,and corrosion resistance of the film sealed by aluminium sols was superior to that by distilled water.

关 键 词：异丙醇铝 硝酸铝 溶胶 封孔 铝合金 

分 类 号：TQ153.6[化学工程—电化学工业]