铝合金表面超疏水缓蚀自修复膜的制备及其耐蚀性  

Preparation of Super-Hydrophobic Corrosion-Inhibited Self-Repairing Film on Aluminum Alloy Surface and Its Corrosion Resistance

作　　者：杨文广 刘振红 朱梅婷 孙金娥 姚琼 肖葵 吴俊升 YANG Wenguang;LIU Zhenhong;ZHU Meiting;SUN Jin'e;YAO Qiong;XIAO Kui;WU Junsheng(Institute of Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China;Department of Materials Science and Engineering,Tianjin college,University of Science and Technology Beijing,Tianjin 301830,China;Key Laboratory of Space Launching Site Reliability Technology,Haikou 571000,China)

机构地区：[1]北京科技大学新材料技术研究院,北京100083 [2]北京科技大学天津学院材料科学与工程系,天津301830 [3]航天发射场可靠性技术重点实验室,海口571000

出　　处：《腐蚀与防护》2021年第5期1-7,37,共8页Corrosion & Protection

基　　金：国家重点研发计划项目(2017YFB0702100);国家自然科学基金项目(51771027)。

摘　　要：先在铝基体上制备了镁铝水滑石膜层和十钒酸根插层水滑石膜层两种类水滑石膜层,再采用全氟辛基三乙氧基硅烷通过气相沉积法对类水滑石膜层进行不同时间的表面改性,制备出超疏水类水滑石膜层。采用扫描电子显微镜、接触角测量仪对膜层的结构和润湿性进行分析,讨论了改性时间对膜层结构和超疏水性能的影响,并且通过电化学测试,短期浸泡试验及盐雾试验进一步研究了该超疏水膜层的耐蚀性。结果表明:改性1 h即可使类水滑石膜层获得超疏水性能,随着改性时间的延长,超疏水膜层的接触角基本不变,12 h为最佳改性时间;超疏水膜层可以极大提高基体的耐蚀性,其中装载钒酸盐缓蚀剂超疏水类水滑石膜层的耐蚀性远高于单纯超疏水类水滑石膜层的。Two kinds of hydrotalcite-like films including Mg-Al hydrotalcite film and decadexanadate intercalated hydrotalcite film were prepared on aluminum substrate.Then super-hydrophobic hydrotalcite-like films were prepared by surface modification to hydrotalcite-like films using perfluorooctyl triethoxy silane and through vapor deposition method.Scanning electron microscopy(SEM)and contact angle measuring instrument were used to analyze the structure and wettability of the films.The effects of modification time on the structure and super-hydrophobic properties of the films were discussed.Electrochemical test,short-term immersion test and salt spraying test were carried out to study the corrosion resistance of the prepared super-hydrophobic films.The results show that the hydrophobic films could obtain super-hydrophobic property when modified for 1 h.With the extension of modification time,the contact angles of the super-hydrophobic films were basically unchanged,and 12 h was the best modification time.The super-hydrophobic films could greatly improve the corrosion resistance of the substrate.And the corrosion resistance of the super-hydrophobic hydrotalcite-like film installed with inhibitor of vanadate was much better than that of the pure super-hydrophobic hydrotalcite-like film.

关 键 词：化学气相沉积法 类水滑石 超疏水膜层 改性时间 耐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]