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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。
The contact corrosion behavior of lead alloy as sacrificial anode material in the coupling with A 3 steel, 302 stainless steel and T 2 copper in NaCl solution was studied. The change of Cl ~ - concentration and temperature in solution and the influence of galvanic couple on the cathodic metal material And the anode / cathode area ratio Ac / Aa is not the same time on the galvanic current density j_g ~ (Al). The results show that there is a different trend of j_g ~ (Al) with the increase of Cl ~ - concentration in the different cathodic metal materials. The order of △ E of the frontal potential difference between the aluminum alloy and the three kinds of metal couples is only in Cl ~ - concentration of less than 0.050mol / L and j_g ~ (Al) the same order; anode reduction reaction rate of oxygen diffusion process control, j_g ~ (Al) and Ac / Aa is proportional to the temperature; solution temperature greater than 20 ℃ When, j_g ~ (Al) significantly increased with increasing temperature.