• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >A Silane Pre-treatment For Improving Corrosion Resistance performances Of Emeraldine Base-coated Aluminium samples In Neutral Environment
【24h】

A Silane Pre-treatment For Improving Corrosion Resistance performances Of Emeraldine Base-coated Aluminium samples In Neutral Environment

机译：硅烷预处理可改善中性环境中翡翠碱涂层铝样品的耐腐蚀性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An aluminium-magnesium alloy AA5182 substrate pre-treated with a 3-aminopropyl-triethoxysilane (APS)-based solution and coated with emeraldine base (EB) showed improved corrosion resistance to neutral salt spray test, compared to samples pre-treated with phosphoric acid-based solutions prior to the EB coating. Scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDX) characterisations of samples pre-treated with APS showed the presence of an uneven silane coating on the aluminium surface according to the surface microstructure. The potentiodynamic study performed on the EB-coated samples showed a noticeable reduction of corrosion current of coupons pre-treated with APS, while no relevant difference in corrosion behaviour was observed between APS and phosphoric acid pre-treated samples prior to the EB coating. The coupling activity of APS between the AA5182 surface and EB coating at the most sensitive corrosion sites could be responsible of an improved adhesion of the EB coating at these points and could explain the observed improved corrosion resistance.
机译：与用磷酸预处理的样品相比，用3-氨基丙基-三乙氧基硅烷（APS）基溶液预处理并涂有绿宝石碱（EB）的铝镁合金AA5182基材显示出对中性盐雾测试的改善的耐腐蚀性EB涂层之前的基于基础的解决方案。用APS预处理的样品的扫描电子显微镜（SEM）和能量色散X射线能谱（EDX）表征表明，根据表面微观结构，铝表面上存在不均匀的硅烷涂层。对EB涂层样品进行的电位动力学研究表明，用APS预处理的试样的腐蚀电流明显降低，而在EB涂层之前，APS和磷酸预处理的样品之间没有观察到腐蚀行为的相关差异。在最敏感的腐蚀部位，AA5182表面和EB涂层之间的APS偶联活性可能是这些点上EB涂层附着力提高的原因，并且可以解释观察到的改善的耐腐蚀性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号