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本文研究了由两种不同矿物电极组成的标准原电池中矿物的电蚀。矿物电极是通过一个零电阻的外电路并浸在氧气饱和的酸性溶液中实现短路的。电极用四种矿物制造:方铅矿、辉铜矿,黄铜矿和黄铁矿。试验中采用了小振幅周期性伏安测定法。记录了周期性和对称性的三角形电位差与电极和电感应之间的短路电偶电位的关系曲线。根据试验结果计算了原电偶作用的特性参数,如发生在电极表面各种反应的Tafel斜率,或动电电流与总腐蚀电流之比值。
This article studies the galvanic corrosion of minerals in a standard primary cell composed of two different mineral electrodes. The mineral electrode is shorted through a zero-resistance external circuit and immersed in an oxygen-saturated acidic solution. The electrodes are made of four minerals: galena, chalcocite, chalcopyrite and pyrite. Small amplitude cyclic voltammetry was used in the test. Recorded the cyclical and symmetrical triangular potential difference between the electrode and the induction of the short circuit between the electric potential curve. Based on the experimental results, the characteristic parameters of the galvanic interaction, such as the Tafel slope of various reactions on the electrode surface or the ratio of the electrokinetic current to the total corrosion current, were calculated.