Abstract

The potential dependence of the wetting angle on a gold electrode in sodium, potassium, and cesium bromide and iodide melts was studied to establish the laws of wetting solid surfaces with ionic melts. It is found that the forms of the contact angle vs. the potential curve for the gold electrode change from a convex to a camel-like shape with two maxima in the transition from sodium halide to potassium and cesium halide melts. This phenomenon is explained by the mutual polarization of gold and halogen ions, X⁻, at the place of their direct contact, which leads to the formation of ordered layers of ion associations (possibly, AuX_n^(n-1)–) on a positively charged surface. The hypothesis proposed agreed with the spectral observations of the electrode surface.

中文翻译：

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金电极通过碱金属溴化物和碘化物熔体的电润湿

摘要

研究了钠，钾和溴化铯和碘化铯熔体中金电极的润湿角对电位的依赖性，以建立离子熔体润湿固体表面的规律。发现金电极的接触角与电势曲线的形式从凸状变为骆驼状，在从卤化钠到钾和卤化铯的熔体过渡中具有两个最大值。这种现象是由黄金和卤素离子，X的相互偏振解释^- ，在该地点的直接接触的，这导致了离子协会有序层的形成（可能的话，AUX _ñ ^{- （N-1）}上的）带正电的表面。提出的假设与电极表面的光谱观察结果一致。