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| The corrosion behavior of Al-10wt.%RE（RE=Ce、Nd、Y、La） alloys in typical marine atmospheric environments |
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Cite this article:
. The corrosion behavior of Al-10wt.%RE（RE=Ce、Nd、Y、La） alloys in typical marine atmospheric environments. Journal of Chinese Society for Corrosion and protection, 0, (): 0-0.
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Abstract The binary aluminium alloy Al-10wt.%RE (Ce, Nd, Y, La) was placed in two atmospheric corrosion test stations (Sanya and Qingdao) for the purpose of conducting atmospheric exposure tests. The corrosion behavior in typical marine atmospheric environments was studied by measuring weight loss, observing corrosion morphology, analyzing corrosion products and performing electrochemical tests. The findings demonstrated that the corrosion rate relationship between the two test stations was Qingdao > Sanya during the 110-day test cycle, which may be associated with the SO2 content in the atmosphere. And the corrosion rate relationship of the four binary aluminium alloys is Al-10Nd>Al-10La>Al-10Y>Al-10Ce, which may be related to the number and distribution of their microstructural precipitated phases. The corrosion at the two test stations was mainly localized, and the composition of the corrosion products formed did not differ significantly, with the main products being Al2O3, AlO(OH) and Al(OH)3. In addition, a small amount of Al2(SO4)3 was generated at the Qingdao station. The corrosion product film that is generated exerts an effect on the corrosion process, and the protective ability of the alloy changes over time.
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Received: 26 March 2025
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