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海水液滴铺展因子对碳钢表面电化学特性的影响

Keywords: 材料失效与保护,大气腐蚀,丝束电极,铺展因子

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Abstract:

?应用丝束电极技术(wbe)研究了海水液滴下碳钢表面的腐蚀行为。结果表明,随着腐蚀时间的延长液滴下阴阳极电流值逐渐下降,最终趋于稳定。比较了不同大小的海水液滴下碳钢表面的电流分布,发现液滴越小腐蚀越剧烈,且更易形成不对称的电化学区域。提出了液滴铺展因子的概念。研究发现,随着液滴铺展因子的增大平均电流密度呈指数增加,最大阳极电流密度和阳极电流密度标准偏差线性增加,腐蚀强度提高。

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