The use of pre-treatments based on doped silane solutions for improved corrosion resistance of galvanised steel substrates
The use of pre-treatments based on doped silane solutions for improved corrosion resistance of galvanised steel substrates
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DOI：
10.1016/j.surfcoat.2005.01.044
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发表时间：
2006-04
影响因子：
5.4
通讯作者：
W. Trabelsi;E. Triki;L. Dhouibi;M. Ferreira;M. Zheludkevich;M. F. Montemor
中科院分区：
文献类型：
--
作者：
W. Trabelsi;E. Triki;L. Dhouibi;M. Ferreira;M. Zheludkevich;M. F. Montemor
本研究旨在评价掺杂硝酸铈或硝酸锆的双[三乙氧基硅丙基]四硫硅烷预处理的镀锌钢基体的耐腐蚀性。通过电化学阻抗谱法评价了预处理后的衬底在NaCl溶液中的耐蚀性。用x射线光电子能谱分析了表面的化学成分，并用原子力显微镜研究了表面形貌。电化学结果表明，以掺杂硅烷溶液为基础的预处理对镀锌钢基体具有良好的防腐作用。这项工作还旨在讨论掺杂剂对镀锌钢基板上硅烷涂层的保护性能的作用。
The present work aims at evaluating the corrosion resistance of galvanised steel substrates pre-treated with bis-[triethoxysilylpropyl] tetrasulfide silane doped with cerium nitrate or zirconium nitrate. The corrosion resistance of the pre-treated substrates was evaluated by electrochemical impedance spectroscopy, during immersion in NaCl solutions. The chemical composition of the surface was assessed by X-ray photoelectron spectroscopy and the surface morphology was studied by atomic force microscopy. The electrochemical results show that pre-treatments based on doped silane solutions provide good corrosion protection of the galvanised steel substrates. The work also aims at discussing the role of the dopants on the protective properties of the silane coatings formed on galvanised steel substrates.