以Ti的化合物为主要原料,Ni为着色剂,实现在常温下对6063铝合金的无铬化学钝化处理,3min内快速成膜,钝化膜为带淡绿的银灰色.通过铬酸盐耐腐蚀测试,钛-镍膜耐铬酸盐点滴腐蚀时间>120s;SEM表明钛-镍膜在铝表面分布均匀,膜厚在1～3μm之间;膜层主要含钛、镍和铝等元素;通过电化学分析,钛钝化膜及Ni2+着色钛膜腐蚀电流分别为2.120、3.658μA,比铝合金的腐蚀电流14.919μA降低,着色钛膜具有理想钝化效果;通过交流阻抗模拟,Ni着色Ti膜为C1/R1/(L2+R2)结构.
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