It is shown that a chromateconversioncoating needs to be used together with the non -chromate primer to meet the corrosion protective requirements.
试验结果表明：非铬涂层需配以含铬的转化涂层才能够满足防腐性能的要求。
2
The cerium conversioncoating, which was prepared properly, would provide a better protection a-gainst corrosion for zinc and galvanized steel than the chromateconversioncoating did.
在一定条件下，铈转化膜对锌和镀锌钢的肪蚀效果优于铬酸盐转化膜。
3
Chromateconversioncoating resulting in the formation of a passivating film.