开发了一种由无毒的钛盐、锆盐和有机聚合物组成的铝及铝合金化学转化剂CF-5,以取代有毒的六价铬钝化.其配方为:0.10~2.00g/L PO43-,0.05~1.00g/L Ti4+,0.05~1.50g/L Zr4+,0.30~1.50g/L F-,0.50~2.00g/L氧化剂,0.05~3.00g/L有机聚合物(水溶性环氧聚合物或丙烯酸聚合物).该钝化剂可在铝及铝合金表面形成性能优良的化学转化膜,膜层有较好的耐蚀性能,且与有机涂层具有良好的附着力.
参考文献
[1] | 朱祖芳.铝合金化学转化处理技术的进展及工业应用[J].材料保护,2003(03):1-4. |
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