铸铝表面绿色环保化学处理新工艺  

A new green and environmental protection passivation process for cast aluminum alloys

作　　者：郭瑞光[1] 李晓杰[1] 唐长斌[1] 张建国[1] 

机构地区：[1]西安建筑科技大学西北水资源与环境生态教育部重点实验室,陕西西安710055

出　　处：《电镀与涂饰》2010年第4期22-24,共3页Electroplating & Finishing

基　　金：国家自然科学基金资助项目(20976143);高等学校博士学科点专项科研基金资助课题(20096120110007);陕西省自然科学研究计划项目(SJ08-ZT05);陕西省教育厅专项科研计划(08JK324)

摘　　要：使用脱氧/除斑剂代替传统的硝酸、氢氟酸酸洗出光工艺对压铸铝合金表面进行处理,与传统工艺和简化工艺进行了对比。结果发现,采用由除油、脱氧/除斑剂除灰活化、钝化处理组成的新工艺不仅能在压铸铝合金表面获得色彩均匀的转化膜层,而且消除了传统工艺在生产过程中产生的污染物。新工艺所得的转化膜可通过96h的盐雾试验,环保节能,有望在压铸铝合金表面处理中得到广泛应用。A recommended treatment process using a deoxidizing/desmutting agent for replacing traditional nitric acid-hydrofluoric acid pickling is used to treat the surface of cast aluminum alloys. A comparison was made between the recommended process and traditional and simpler processes. The results showed that the new process consisting of degreasing, deoxidizing/desmutting and passivating can not only obtain a conversion coating with uniform appearance and 96 h salt spray corrosion resistance, but also eliminate the contaminants produced from traditional treatment process. Because of its environmental protection and energysaving advantages, this new treatment process seems to have a bright future for the surface treatment of cast aluminum alloys.

关 键 词：铸铝合金 化学转化膜 氟铝酸盐 环境友好 

分 类 号：TG178[金属学及工艺—金属表面处理]