用具有适当空隙的电镀Cu-Sn-Pb三元合金作为青铜器模拟试片.应用腐蚀膏试验和微电极测试，研究了氯化亚铜(CuCl)、碱式氯化铜［Cu2Cl(OH)3］和碱式碳酸铜［Cu2(OH)2CO3］等腐蚀产物对氧的去极化反应的影响.以上述铜盐为活性物质制备出多孔氧电极，与青铜试片在3％NaCl溶液中组成腐蚀原电池，进行了阴极极化曲线测试，并进行以CuCl为活性物质的氧电极的恒电流放电和恒电阻放电测试.结果表明CuCl使试片的腐蚀速度高出其它二价铜盐两个数量级，对氧的去极化反应催化活性最高，氧电极的放电性能稳定并且模拟了被称为“粉状锈”主要成分的Cu2Cl(OH)3的生成过程 .提出了加速青铜器小孔腐蚀的多孔氧电极机理.
Cu-Sn-Pb alloy plated layer with appropriate porosity was used as the simulation sample of bronze ware.The effects of corrosion products such as cuprous chloride,copper chloride alkali and copper carbonic acid alkali on the depolarization reaction of oxygen were investigated by corrosion paste experiments and microelectrode method.The simulating corrosion cells were assembled with plated copper-tin-lead alloy electrode and porous oxygen electrode cathode polarization curves testing of porous oxygen electrode were carried out,and the constant current discharge and constant resistance discharge of oxygen electrode with cuprous chloride as active catalytic material were also carried out. The result indicated that cuprous chloride made the corrosion speed of sample higher two orders of magnitude than bivalent copper salts,and it has the highest catalytic activation to the depolarization reaction of oxygen,the discharge performance of oxygen electrode very stabilized and the production procees of copper chloride alkali which has been called the mostly component of “powdery rust” was simulated.The mechanism of porous oxygen electrode to accelerate pitting corrosion of bronze ware has been put forwarded.
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