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首页> 外文期刊>International Journal of Electrochemical Science >Surface Modification of Aluminum Alloy 6061 for Bipolar Plate Application: Adhesion Characteristics and Corrosion Resistance
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Surface Modification of Aluminum Alloy 6061 for Bipolar Plate Application: Adhesion Characteristics and Corrosion Resistance

机译：双极板应用铝合金6061的表面改性：粘附特性和耐腐蚀性

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摘要

Surface modification studies on aluminum alloy 6061 (AA6061) to improve the surface properties of metallic bipolar plates in fuel cells are presented in this work. The surface of AA6061 was treated first by the electroless process to get a Ni-P coating (AA6061/Ni-P), after that a gold layer was coated by PVD on the modified surface (AA6061/Ni-P/Au). The chemical composition and the roughness variation of the surface during the electroless process were determined by energy-dispersive spectroscopy analysis (EDS) and profilometry respectively. According to XRD studies a solid solution between aluminum and Ni-P interface was formed, improving the adherence of Au on the surface. The corrosion studies of bipolar metal plates were carried out with a potentiostat/galvanostat (Solartron 1287) and a PC with CorreWare software, observing a better corrosion resistance value for AA6061/Ni-P/Au (5.21 μA cm?2) compared to bare AA6061 (51 μA cm?2). The open circuit potential was measured during 4 hours simulating the anodic and cathodic environments and the best performance was observed for AA6061/Ni-P/Au for both environments.
机译：铝合金6061（AA6061）的表面改性研究以改善燃料电池中金属双极板的表面性质。首先通过化学粉碎处理AA6061的表面以获得Ni-P涂层（AA6061 / Ni-P），之后通过PVD在改性表面上涂覆金层（AA6061 / Ni-P / Au）。通过能量分散光谱分析（EDS）和轮廓测定法测定化学成分和表面期间的表面的粗糙度变化。根据XRD研究，形成铝和Ni-P接口之间的固溶体，改善Au在表面上的粘附。双极金属板的腐蚀研究与具有Correeware软件的Potentiostat / Galvanostat（Solartron 1287）和PC进行，与裸露相比，观察AA6061 / Ni-P / Au（5.21μAcm2）的更好的耐腐蚀值AA6061（51μAcm？2）。在4小时内测量开路电路电位，模拟阳极和阴极环境，对于两个环境的AA6061 / NI-P / AU观察到最佳性能。

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