三价铬蓝白钝化液性能的恢复  

Recovery of performance of blue white trivalent chromium passivation bath

作　　者：姚晨岚[1] 李金花[1] 周保学[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240

出　　处：《电镀与涂饰》2009年第12期39-42,共4页Electroplating & Finishing

基　　金：上海市科学技术委员会资助项目(09595810600)

摘　　要：以工业生产线上失效的三价铬蓝白钝化废液为对象,通过添加某些组分来改善钝化液的性能,并延长其使用寿命。结果表明,添加Cr3+能够提高钝化件的耐蚀性,添加Co2+能够恢复钝化件的蓝色光泽,添加复合有机酸能改善钝化件的外观和耐蚀性,添加F?对钝化液性能的影响较小。同时添加Cr3+、Co2+和复合有机酸能明显改善钝化件的外观和耐蚀性,实现钝化液钝化性能的恢复。Some components were added to a spent blue-white trivalent chromium passivation bath from industrial production line to improve its performance and extend its service life. The results showed that adding Cr^3＋ can improve corrosion resistance, adding Co^2＋ or organic acid compound can recover blue gloss of passivation film, and adding F^- has little effect on the performance of passivation bath. The simultaneous addition of Cr^3＋, Co^2＋ and organic acid compound can apparently improve the appearance and corrosion resistance of passivation film, thus achieving the recovery of spent passivation bath.

关 键 词：钝化 三价铬 恢复 耐蚀性 

分 类 号：TG178[金属学及工艺—金属表面处理] TQ153.15[金属学及工艺—金属学]