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nacl rong ye zhong lv he jin de jie chu fu shi yan jiu
Author(s): 
Pages: 100-105
Year: Issue:  4
Journal: Materials Science and Technology

Keyword:  铝合金接触腐蚀氯离子浓度;
Abstract: 研究了作为牺牲阳极材料的铅合金在NaCl溶液中与A钢,302不锈钢和T紫铜偶接时的接触腐蚀行为,探讨了溶液中Cl浓度和温度变化,以及电偶对中阴极金属材料和阴阳极面积比Ac/Aa不同时对电偶电流密度jAl的影响。结果表明,电偶对中阴极金属材料不同,jAl随Cl浓度增加有不同的变化趋势;铝合金与三种金属电偶接前起始电势差△E的排列顺序只在Cl浓度小于0.050mol/L时与jAl的排序一致;阳极还原反应的速率出氧的扩散过程控制,jAl与Ac/Aa成正比关系;溶液温度大于20℃时,jAl随温度升高显著增大。
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