水性无铬达克罗涂料的制备与性能研究
Preparation and Performance ofWater-based Chromiumfree Dacromet Coating
查看参考文献15篇
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文摘
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采用片状锌粉和铝粉为填料,硅烷A-187为成膜物,制备了一种水性无铬达克罗涂料,通过扫描电子显微镜(SEM)、能谱(EDS)、X射线光电子能谱(XPS)、中性盐雾实验、动电位极化曲线和电化学阻抗谱对涂层的表面形貌、成分及耐蚀性能进行了表征和分析。结果表明:制备的水性无铬达克罗涂料具有优异的储存稳定性, 50 ℃/48 h涂料无变化;涂装后的无铬水性涂层表面均匀平整,无明显缺陷,经480 h中性盐雾实验,表面无红锈产生;水性无铬达克罗涂层腐蚀电位负移,腐蚀电流减小了两个数量级,腐蚀电阻增加,涂层具有较好的防护性能。 |
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其他语种文摘
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A water-based chromium-free Dacromet coating was prepared with powders of Zn and Al as filler and silane A-187 as film forming material. The coatings were characterized by means of SEM with EDS and XRD, while their corrosion performance was investigated by using potentiodynamic measurement, NSS test and AC impedance spectra. The results showed that the water-based chromium-free Dacromet paint had excellent stability with no obvious change even after storage at 50 ℃ for 48 h; the surface of the applied coatings was smooth and compact without defects, while no tarnish spots could be observed after 480 h salt spray test. The E_(corr) of the water-based chromiumfree Dacromet coating shifts positively while its I_(corr) is two magnitudes lower in comparison to those of the bare substrate which indicated that the water-based chromium-free Dacromet coating had excellent corrosion resistance. |
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来源
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中国腐蚀与防护学报
,2016,36(6):559-565 【核心库】
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DOI
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10.11902/1005.4537.2016.124
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关键词
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锌粉
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铝粉
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稳定性
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水性无铬
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达克罗涂料
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地址
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1.
东北大学材料与冶金学院, 沈阳, 110142
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中国科学院金属研究所金属腐蚀与防护实验室, 沈阳, 110016
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沈阳市航达科技有限责任公司, 沈阳, 110043
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1005-4537 |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:5893254
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