铬酸阳极化中温去离子水封闭工艺研究  

Study on Medium Temperature Deionized Water Seal of Chromic Acid Anodizing

作　　者：王立亮[1] 颜杰红 李森[1] WANG Liliang;YAN Jiehong;LI Sen(AVIC SAC Commercial Aircraft Company Ltd.,Shenyang 110179,China)

机构地区：[1]中航沈飞民用飞机有限责任公司,辽宁沈阳110179

出　　处：《电镀与精饰》2020年第6期30-33,共4页Plating & Finishing

摘　　要：针对铬酸阳极化中温去离子水封闭工艺氧化膜水合度不易控制并且耐蚀性差的问题,研究了不同封闭温度下氧化膜的水合度以及阳极化保压时间等因素对耐蚀性的影响。结果表明:铬酸阳极化中温去离子水封闭工艺,封闭温度越低,达到水合度15%的封闭时间越长,耐蚀性也越差,延长阳极化保压时间可以提高阳极化膜的耐蚀性。采用封闭温度70℃,保压时间45 min的工艺参数可以很好控制15%的氧化膜水合度要求,并能够满足336 h盐雾试验的质量控制要求。In view of the difficulty in controlling the extent of hydration and poor corrosion resistance of the anodized film in the process of medium temperature deionized water sealing of chromic acid anodiz⁃ing,the influence of the extent of hydration of oxidation film under different sealing temperatures and the voltage holding time of anodizing on the corrosion resistance was studied.The results showed that the sealing process of chromic acid anodized with medium temperature deionized water,the lower the sealing temperature,the longer the sealing time to achieve 15%hydration,but the worse the corrosion resistance.Prolonging the anodizing voltage holding time can improve the corrosion resistance of the oxidation film.The sealing temperature of 70℃and the voltage holding time of 45 min can be used to controlthe 15% hydration of oxidation film and meet the quality control requirements of 336h salt spray test.

关 键 词：铬酸阳极化 中温去离子水封闭 飞机 耐蚀性 

分 类 号：TQ153.6[化学工程—电化学工业]