The present study investigates how sub-zero temperature affects the formation of the oxide layer of pure magnesium and subsequently alters their corrosion performance. To this end, a series of plasma electrolysis is carried out in alkaline-silicate electrolyte with two different temperatures of −5 and 25 °C. In contrast to the popular findings that low temperatures during anodic oxidation promotes superior corrosion protection, the present results show that the corrosion resistance of the sample processed at sub-zero condition is inferior to that processed at room temperature. In order to discuss such anomaly of the corrosion resistance, microstructural factors, including morphologies, compactness, and composition of the oxide layer would be taken into account.

本研究调查了零度以下温度如何影响纯镁氧化物层的形成并随后改变其​​腐蚀性能。为此，在碱性硅酸盐电解质中以-5和25°C的两个不同温度进行一系列等离子体电解。与普遍的发现相反，阳极氧化过程中的低温可以促进优异的腐蚀防护，目前的结果表明，在零以下条件下处理的样品的耐蚀性低于在室温下处理的样品。为了讨论这种耐腐蚀性异常，将考虑微观结构因素，包括形态，致密性和氧化物层的组成。