【摘要】 研究了作为牺牲阳极材料的铅合金在ＮａＣｌ溶液中与Ａ_３钢，３０２不锈钢和Ｔ_２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ｊ_ｇ^Ａｌ的影响。结果表明，电偶对中阴极金属材料不同，ｊ_ｇ^Ａｌ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ｊ_ｇ^Ａｌ的排序一致；阳极还原反应的速率出氧的扩散过程控制，ｊ_ｇ^Ａｌ与Ａｃ／Ａａ成正比关系；溶液温度大于２０℃时，ｊ_ｇ^Ａｌ随温度升高显著增大。更多还原

【Abstract】 The galvanic corrosio behavior of aluminum alloy coupled to A₃ steel, 302 stainless steel and T₂ copper has been studied in the NaCl solution. Results show that the change of galvanic current density is different with increasing Cl￣- concentration for Al alloy coupled to dissimilar metals;ranking of the initial potential difference of uncoupled dissimilar metals is in accord with that of only when the Cl￣- Concentration is less than 0.050mol/L;is directly proportional to the area ration Ac/Aa.更多还原