采用电化学测试系统和扫描电镜(SEM),分别研究了6061铝合金在氯化铈(CeCl3)浓度为0 mg/L和40 mg/L的铬酸盐处理液中的成膜过程及CeCl3对其成膜的作用.结果表明:有无CeCl3其成膜时间大致相同,但稀土氯化物的加入可以提高成膜电流,使成膜过程更加顺利;铬酸盐转化膜表面疏松多孔,存在很多裂纹,有的深入铝合金基体,加入氯化铈,膜更加均匀、致密,且裂纹有所减少.
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