Abstract

In this paper, the polarization curve and corrosion amount of aluminum alloy 1050 in 30 mass% nitric acid solution were measured as the corrosion potential under natural corrosion. it was found that the surface corrosion of aluminum alloy was uniformed and the corrosion rate calculated according to the weight loss-time curve was 0.25 mA·cm⁻² by observing the corrosion morphology. The polarization resistance curve was obtained by differentiating the polarization curve. The corrosion rate calculated by analyzing the characteristics of the polarization resistance curve was 0.29 mA·cm⁻², which was close to the actual corrosion rate obtained by chemical erosion.

中文翻译：

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硝酸溶液中铝合金腐蚀速率的分析与计算

摘要

本文测量了铝合金1050在30质量％硝酸溶液中的极化曲线和腐蚀量，作为自然腐蚀下的腐蚀电位。通过观察腐蚀形态，发现铝合金的表面腐蚀均匀，并且根据失重时间曲线计算出的腐蚀率为0.25mA·cm ^-2。通过微分极化曲线获得极化电阻曲线。通过分析极化电阻曲线的特性计算出的腐蚀速率为0.29mA·cm ^-2，与通过化学侵蚀获得的实际腐蚀速率接近。