铝合金表面植酸转化膜的制备及耐腐蚀性能研究  

Preparation and corrosion resistance of phytic acid conversion coating on aluminum alloys

作　　者：刘钟书 刘纯 迟霖 杨曦淇 席嘉恒 房大然 Liu Zhongshu;Liu Chun;Chi Lin;Yang Xiqi;Xi Jiaheng;Fang Daran(School of Resources and Materials,Northeastern University at Qinhuangdao,Qinhuangdao 066004,China;School of Chemical Engineering,Hebei Normal University of Science&Technology,Qinhuangdao 066004,China)

机构地区：[1]东北大学秦皇岛分校资源与材料学院,河北秦皇岛066004 [2]河北科技师范学院化学工程学院,河北秦皇岛066004

出　　处：《电镀与精饰》2023年第11期54-59,共6页Plating & Finishing

基　　金：河北省自然科学基金资助项目(E2021501019)。

摘　　要：对Al-Cu-Mg合金在单一植酸溶液、植酸+Zn^(2+)溶液、植酸+Mn^(2+)溶液中分别进行化学转化处理。结果显示,合金在植酸+Zn^(2+)溶液和植酸+Mn^(2+)溶液中得到的表面膜层比在单一植酸溶液中的膜层更完整致密。化学转化处理提高了合金试样的腐蚀电位,并减小了其阳极电流密度。与在单一植酸中转化的合金相比,在植酸+Zn^(2+)、植酸+Mn^(2+)溶液中处理的合金具有更好的耐蚀性。The phytic acid conversion coating was prepared by immerging the Al-Cu-Mg alloy samples in single phytic acid solution,phytic acid+Zn^(2+)solution,and phytic acid+Mn^(2+)solution respectively.The results show that the conversion coating on the samples in phytic acid+Zn^(2+)solution or phytic acid+Mn^(2+)solution is denser than that in single phytic acid solution.Moreover,the chemical conversion increases the corrosion potential of the alloy,and decreases the anodic current density of the samples.Compared with the sample in single phytic acid solution,the samples in phytic acid+Zn^(2+)solution or phytic acid+Mn^(2+)solution have better corrosion resistance.

关 键 词：铝合金 植酸 化学转化 耐蚀性 

分 类 号：TG178[金属学及工艺—金属表面处理]