| 含硅有机-无机复合涂层对铝合金的保护作用 |
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| 引用本文： | 朱建龙,王加余,贾文杰,李澄.含硅有机-无机复合涂层对铝合金的保护作用[J].材料保护,2009,42(2). |
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| 作者姓名： | 朱建龙 王加余 贾文杰 李澄 |
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| 作者单位： | 1. 江苏法尔胜新日制铁缆索有限公司,江苏,江阴,214445
2. 南京航空航天大学材料科学与技术学院,江苏,南京,210016 |
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| 摘 要： | 为了改善铝合金材料的耐腐蚀性能,采用正硅酸乙酯为主要原料制备溶胶,涂覆于铝合金基体表面,经过适当处理后形成了具有有机-无机复合结构的涂层.采用电化学法、扫描电镜(SEM)等手段研究了涂层性能.结果表明,该涂层兼容了有机和无机成分的特点,涂覆试样的腐蚀电流密度可达(4.26～6.58)×10-6 A/cm2,显示涂层对于铝合金基体具有与现行的含Cr(Ⅵ)传统表面处理工艺相当的保护效果.涂层有效地减缓了铝合金在含NaCl中性水溶液中的腐蚀,能够对铝合金基体提供有效的保护.本工艺不产生有害化学物质,是一项绿色环保工艺.
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| 关 键 词： | 复合涂层 有机-无机 溶胶-凝胶 耐腐蚀性 |
Protection of Aluminum Alloys by Silicate-Based Organic-Inorganic Hybrid Coatings |
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| ZHU Jian-long,WANG Jia-yu,JIA Wen-jie,LI Cheng.Protection of Aluminum Alloys by Silicate-Based Organic-Inorganic Hybrid Coatings[J].Journal of Materials Protection,2009,42(2). |
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| Authors: | ZHU Jian-long WANG Jia-yu JIA Wen-jie LI Cheng |
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| Affiliation: | ZHU Jian-long1,WANG Jia-yu2,JIA Wen-jie2,LI Cheng2(1.Jiangsu Fasten-Nippon Steel Cable Company Ltd.,Jiangyin 214445,China,2.College of Materials Science , Technology,Nanjing University of Aeronautics , Astronautics,Nanjing 210016,China) |
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| Abstract: | A sol was prepared using tetraethyl orthosilicate(TEOS)as the raw material.The resulting sol was painted onto the surface of Al al-loys and properly heat-treated to generate organic-inorganic hy-brid coatings,aiming at improving the corrosion resistance of the Al alloys.The microstructure and properties of the coatingB were analyzed using an electrochemical device and a scanning electron microscope.Results indicated that the coatings combine the ad-vantages of both organic and inorganic species,making it fe... |
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| Keywords: | organic-inorganic hybrid coatings sol-gel corrosion resistance |
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