It is shown that a chromate conversioncoating 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
Cerium-based conversioncoating was successfully deposited on corrosion-resisting aluminium alloy LF21 in cerium containing solution using electrolysis method.
研究了一种通过电解沉积方法在防锈铝lf21表面上生成铈盐转化膜的工艺。
3
HY-200 process procedure for colour chemical conversioncoating of al and its alloys parts and the test method for quality control are introduced in this paper.