Results show that accelerant A can raise the speed of the conversion coatings greatly. and the formed coatings have good restrain action on pitting of aluminum alloy.

• 结果表明：成膜促进剂的加入能有效提高铈盐转化膜的成膜速度，所得转化膜对铝合金的点蚀有较好的抑制作用。