稀土铈对建筑铝材表面阳极氧化膜腐蚀防护性能的影响  

Effect of Rare Earth Cerium on Corrosion Protection of Anodic Oxidation Film on Surface of Construction Aluminum

作　　者：王薇薇[1] WANG Weiwei(School of Architectural Engineering,Jilin Economic Management Cadre Institute,Changchun 130012,China)

机构地区：[1]吉林省经济管理干部学院建筑工程学院,吉林长春130012

出　　处：《电镀与精饰》2022年第11期59-63,共5页Plating & Finishing

基　　金：吉林省教育厅课题(吉教科文验字[2013]198)。

摘　　要：为了进一步改善建筑铝材表面阳极氧化膜的腐蚀防护性能,在电解液中添加稀土盐-硫酸铈,并研究了硫酸铈质量浓度对阳极氧化膜的微观形貌、厚度和腐蚀防护性能的影响。结果表明:随着硫酸铈质量浓度从0 g/L增加到0.6 g/L,阳极氧化膜的孔隙率明显降低,致密性得到改善,并且厚度呈增加的趋势,对建筑铝材的腐蚀防护性能逐渐提高。但随着硫酸铈质量浓度从0.6 g/L继续增加到1.2 g/L,阳极氧化膜的孔隙率升高,致密性和厚度都降低,导致腐蚀防护性能下降。当硫酸铈质量浓度为0.6 g/L时,阳极氧化膜的孔隙率仅为14.5%,其致密性良好而且较厚,对建筑铝材具有良好的腐蚀防护作用。In order to improve the corrosion protection of anodic oxidation film on surface of construction aluminum,the rare earth salt,cerium sulfate,was added into the electrolyte,and the effect of the mass concentration of cerium sulfate on the microstructure,thickness and corrosion protection of anodic oxidation film was studied.The results showed that as the mass concentration of cerium sulfate increases from 0 g/L to 0.6 g/L,the porosity of anodic oxidation film is obviously reduced,and the corro‐sion protection of anodic oxidation film to construction aluminum is improved due to the increasing of thickness and improvement of the compactness.However,as the mass concentration of cerium sulfate is increased from 0.6 g/L to 1.2 g/L,the porosity of anodic oxidation film is increased and both the compactness and thickness decrease,leading to the deterioration of corrosion protection to construction aluminum.When the mass concentration of cerium sulfate is 0.6 g/L,the anodic oxidation film is thicker and denser with a porosity of only 14.5%,so it can offer good corrosion protection effect on construction aluminum.

关 键 词：腐蚀防护性能 阳极氧化膜 稀土铈 建筑铝材 

分 类 号：TQ153.6[化学工程—电化学工业]