锆、锂盐对铝合金阳极氧化膜封闭效果的影响

Influence of Sealing Effect of Zirconium and Lithium Salt on Anodic Oxidation Film of Aluminum Alloy

通过电化学试验、硝酸预浸的磷铬酸试验和摩擦磨损试验,研究含不同量K2ZrF6、CH3COOLi和添加剂A的锆、锂盐封闭液对铝合金阳极氧化膜封闭效果的影响,并对比了几种常用封闭液的封闭效果。结果表明:锆、锂盐封闭优于沸水封闭与镍盐封闭;自来水配制封闭液的封闭效果较纯水配置的略差,但试样的质量损失均满足标准要求;最佳封闭工艺参数为封闭液由20 g/L K2ZrF6+7 g/L CH3COOLi+2 g/L添加剂A配制而成,封闭时间为12 min。

Through electrochemical test, phosphochromic acid test of nitric acid preimpregnation and friction and wear test, the influence of different content of K2ZrF6, CH3 COOLi and additive A of zirconium and lithium salt sealing solution on the sealing effect of aluminum alloy anodic oxide film was studied. And the sealing effects of several commonly used sealing solutions were compared. The results showed that zirconium and lithium salt sealing was better than boiling water sealing and nickel salt sealing. The sealing effect of tap water was slightly worse than that of pure water, but the mass loss of samples all met the standard requirements. The best sealing process parameters were sealing solution composed of 20 g/L K2ZrF6+7 g/L CH3COOLi+2 g/L additive A, sealing time of 12 min.