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应用现场反射式椭圆偏振技术和循环伏安法研究氯离子以及苯并三氮唑对铜电极腐蚀性能的影响,探索铜电极的腐蚀及缓蚀机理,为铜材料在含有氯离子的腐蚀介质(如一次锌锰干电池)中的使用和保护提供依据。研究结果表明:电解液中氯离子的存在将明显加速铜电极的腐蚀,在电解液中添加苯并三氮唑能够抑制铜的腐蚀,即使电解液中没有氯离子存在,苯并三氮唑也能够阻止铜的氧化;与电化学研究方法比较,椭圆偏振测量技术对于检测表面层的微小变化有其独特的优点,在研究抑制铜腐蚀时能弥补电化学研究方法灵敏度不足的缺陷;文中还提出了苯并三氮唑和氯离子参与形成铜表面保护膜层的模型,并结合该模型对铜腐蚀性能和缓蚀机制进行了解释。
The effects of chloride ion and benzotriazole on the corrosion resistance of copper electrode were studied by field-reflected ellipsometry and cyclic voltammetry. The corrosion and corrosion inhibition mechanisms of copper electrode were explored. The corrosion behavior of copper electrode in chloride corrosion medium Such as a zinc-manganese battery) to provide the basis for the use and protection. The results show that the existence of chloride in the electrolyte will accelerate the corrosion of the copper electrode obviously. Adding benzotriazole in the electrolyte can restrain the corrosion of copper even if there is no chloride in the electrolyte. Benzotriazole Which can prevent the oxidation of copper. Compared with the electrochemical method, ellipsometry has its own unique advantages for the detection of small changes in the surface layer. It can make up for the lack of sensitivity of the electrochemical method to suppress copper corrosion. Benzotriazole and chloride ions involved in the formation of copper surface protective film model, combined with the model of copper corrosion resistance and corrosion mechanism were explained.