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首页> 外文期刊>High temperature materials and processes >Air Corrosion of Fe-15Cr-xAl Alloys beneath KCl-ZnCl_2 Deposits at 773K
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Air Corrosion of Fe-15Cr-xAl Alloys beneath KCl-ZnCl_2 Deposits at 773K

机译:773K下KCl-ZnCl_2沉积物下方的Fe-15Cr-xAl合金的空气腐蚀

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摘要

The corrosion behavior of three Fe-15Cr-xAl alloys (x=0, 5, 10 at. percent) beneath KCl-ZnCl_2 deposits in air was investigated at 773K. All the alloys suffered from accelerated corrosion characterized by the formation of non-protective porous oxide scales. The addition of aluminum was only slightly beneficial for the corrosion resistance of the base alloy. The effect of aluminum is attributed to the increase of the Al_2O_3 content in the inner region of the scale, which may act as a barrier by retarding the rapid migration of the reactants.
机译:在773K下研究了三种K-15-ZnCl_2在空气中的Fe-15Cr-xAl合金(x = 0、5、10 at。%)的腐蚀行为。所有合金都遭受加速腐蚀,其特征在于形成了非保护性多孔氧化物水垢。铝的添加仅对基础合金的耐腐蚀性稍微有利。铝的作用归因于水垢内部区域中Al_2O_3含量的增加,这可能通过阻碍反应物的快速迁移而充当屏障。

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