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The effect of low temperature heat treatment on surface chemistry and corrosion resistance of commercial magnesium alloys AZ31 and AZ61 in 0.6 M NaCl solution

机译:低温热处理对0.6 M NaCl溶液中商品镁合金AZ31和AZ61的表面化学和耐蚀性的影响

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摘要

This paper studies the differences in chemical composition of the oxide surface layers induced by heating in air at 200 °C for time intervals from 5 min up to 60 min on commercial AZ31 and AZ61 magnesium alloys with a view to a better understanding of their protective properties. A strong link was found between the aluminium enrichment observed in the surface of the oxide layer and the decrease in the protective properties of the heat treated AZ31 alloy. In contrast, no significant changes have been observed in the case of the heat treated AZ61 alloy.
机译:本文研究了在商用AZ31和AZ61镁合金中在200°C的空气中加热5分钟到60分钟的时间间隔引起的氧化物表面层化学成分的差异,以更好地了解它们的保护性能。 。在氧化物层表面观察到的铝富集与热处理的AZ31合金的保护性能下降之间发现了牢固的联系。相反,在热处理的AZ61合金的情况下,没有观察到明显的变化。

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