摘要
为了获得色泽纯正、耐蚀性优良的铝合金着色膜,以(NH4)2MoO4,NH4Cl为主体,以着色膜耐蚀性为目标,通过对不同水平的可控因素的正交试验极差分析,研制了一种铝合金小零件化学着色配方,获得了最佳工艺参数:15 g/L(NH4)2MoO4,30 g/L NH4Cl;着色温度85℃,反应时间40 min。在该条件下可获得耐腐蚀能力明显强于Cu(NO3)2、KMnO4常温置换氧化着色的着色膜,膜层耐碱腐蚀性能提高2.0倍,耐盐雾腐蚀性能提高0.5倍。
Based on orthogonal tests and range analysis,a kind of chemical coloring fluid for Al alloy rivet was formulated using(NH4)2MoO4 and NH4Cl as the major components,and the optimal coloring parameters were determined.It was found that colored film with good corrosion resistance could be formed on Al alloy after immersion in the coloring fluid composed of 15 g/L(NH4)2MoO4 and 30 g/L NH4Cl at 85 ℃ for 40 min.Resultant colored film had much better corrosion resistance(resistance to alkaline corrosion and salt spray) than the one obtained by replacement oxidation in aqueous Cu(NO3)2-KMnO4 at ambient temperature.
出处
《材料保护》
CAS
CSCD
北大核心
2011年第5期40-42,84,共3页
Materials Protection
基金
贵州省科技厅基金项目黔科合J字(2009)2224号
贵州大学研究生创新基金资助项目(校研理工2010022)
关键词
化学着色
着色膜
铝合金小零件
耐腐蚀性
chemical coloring
colored film
aluminum alloy rivet
corrosion resistance
