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采用失重法和电化学方法对铜在模拟苦咸水溶液中的腐蚀电化学行为进行了研究。结果表明 ,铜在所用模拟苦咸水中呈现典型的孔蚀特性 ;并且随着Cl- 的加入使铜在该体系中的自腐蚀电位和孔蚀电位大大降低 ,说明Cl- 对铜具有很强的侵蚀性 ,与纯NaCl溶液中的各数据比较 ,都向正方向移动 ,苦咸水溶液中的其他阴离子 ,如HCO-3 或SO2 -4 ,抑制了Cl- 对铜的破坏作用。
The electrochemical corrosion behavior of copper in simulated brackish water solution was investigated by weight loss method and electrochemical method. The results show that copper presents typical pitting corrosion characteristics in simulated brackish water. With the addition of Cl-, the self-corrosion potential and pitting potential of copper in the system are greatly reduced, indicating that Cl- has a strong Erosive, compared with the pure NaCl solution data, all moved in the positive direction. Other anions in the brackish water solution, such as HCO-3 or SO2 -4, inhibited the destructive effect of Cl-on copper.