摘要
探究十二烷基三甲氧基硅烷(DTMS)改性对2024铝合金微弧氧化膜层(MAO)以及钒酸根型微弧氧化/水滑石复合膜层(MLV)的性能影响。利用扫描电镜、接触角测试仪及电化学阻抗和极化曲线对MAO膜层、MAO-DTMS膜层和MLV-DTMS膜层的表面形貌、疏水性和耐蚀性能进行分析。结果表明:DTMS改性能够对微弧氧化膜层的结构缺陷进行修复,能显著提高膜层表面疏水性并改善膜层的耐蚀性能。同时,水滑石的生长还能够促进DTMS在微弧氧化膜层表面的成膜,进一步提高MAO膜层的长期耐蚀性能。
In this paper,the effects of dodecyl trimethoxysilane(DTMS)on 2024 aluminum alloy micro-arc oxidation(MAO),and vanadate type micro-arc oxide/hydrotalcite composite film(MLV)were investigated.The surface morphology,hydrophobicity and corrosion resistance of MAO film,MAO-DTMS film and MLV-DTMS film are analyzed by using the scanning electron microscope,contact angle tester and electrochemical impedance and polarization curves.The results show that the DTMS modification can repair the structural defects of the micro-arc oxidation film,and significantly improve the surface hydrophobicity of the film,and improve the corrosion resistance of the film.Meanwhile,the growth of hydrotalcite can promote the formation of DTMS film on the surface of micro-arc oxidation film,further improving the long-term corrosion resistance of MAO film.
作者
罗蓝
高秀磊
张颖君
窦宝捷
林修洲
Luo Lan;Gao Xiulei;Zhang Yingjun;Dou Baojie;Lin Xiuzhou(School of Materials Science and Engineering,Sichuan University of Science&Engineering,Zigong 643000,Sichuan,China;Shandong Zhongshan Photoelectric Material Co.,Ltd.,Zibo 255138,Shandong,China;Key Laboratory for Corrosion and Protection of Materials of Sichuan Province,Zigong 643000,Sichuan,China)
出处
《四川化工》
CAS
2022年第3期37-41,共5页
Sichuan Chemical Industry
关键词
铝合金
微弧氧化
硅烷化处理
耐蚀性
aluminum alloy
micro-arc oxidation
silanization treatment
corrosion resistance
