LY12铝合金在弱碱性介质中的着色工艺研究  

A Coloring Technique of LY12 Al Alloy in NaOH Solution

作　　者：刘哲[1] 唐子龙[1,2] 

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]天津大学天津市材料复合与功能化重点实验室,天津300072

出　　处：《腐蚀科学与防护技术》2011年第1期57-60,共4页Corrosion Science and Protection Technology

基　　金：天津市重点项目(09JCZDJC24100);国家自然科学基金项目(50671072)资助

摘　　要：采用直流电解方法,在室温的0.2 mol/L NaOH作为基础电解液中,在LY12铝合金上制备了常用的伪装色橄榄绿膜,分析了着色电压和时间对着色膜性能的影响.结果表明,在槽压5 V和着色时间4 min时制备的橄榄绿膜层色泽均匀,具有良好的结合力、耐热性和耐蚀性,在盐酸中具有良好的时效耐蚀性能.Olive green film,a widely used stealthy color,was electrolytically prepared on LY12 aluminum alloy in electrolytes of 0.2 mol/L NaOH at room temperature.The effect of the control parameters,i.e.cell potential and coloring time,on performance of color film were examined in detail.Two key parameters in the coloring process were optimized,i.e.5V cell potential and 4 min electrolytic period.The olive green film prepared by the optimized process was uniform and tightly bound to the metal substrate.The color film also showed pretty good heat resistance.

关 键 词：铝合金 着色膜 伪装色 耐蚀性 

分 类 号：TG174.42[金属学及工艺—金属表面处理]