Local re-immersion behaviour of Ce-based inhibiting layers on AA2024-T3 intermetallics: Enhanced stability through partial dealloying and prolonged exposure

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-06-25 DOI:10.1016/j.corsci.2025.113146

Marlon Mopon Jr. , Arjan Mol , Santiago J. Garcia

引用次数: 0

Abstract

The stability of inhibiting layers on AA2024-T3 intermetallic particles (IMPs) during re-immersion in saline following an initial immersion in a Ce(III)-containing electrolyte was investigated using in situ reflected light microscopy. Re-immersion behaviour varied due to differences in IMP composition, spatial distribution, and Ce(III) precipitation. IMPs were grouped into four categories based on whether their activity was high or low during both the immersion and re-immersion stages. Majority of the high activity particles during re-immersion had low activity during immersion. Longer immersion times (up to 72 h) and a brief delay in inhibitor supply (30 s) reduced re-immersion activity by increasing Ce(III) coverage. These findings suggest that corrosion protection systems promoting greater Ce(III) precipitation may enhance re-immersion stability.

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ce基抑制层在AA2024-T3金属间化合物上的局部再浸行为：通过部分合金化和长时间暴露增强稳定性

利用原位反射光显微镜研究了AA2024-T3金属间颗粒（IMPs）在初始浸泡于含Ce（III）电解质后再次浸泡在盐水中的抑制层的稳定性。再浸泡行为因IMP成分、空间分布和Ce（III）沉淀的不同而不同。根据他们在浸入和再浸入阶段的活动是高还是低，将imp分为四类。大多数高活性颗粒在再浸泡时活性较低。较长的浸泡时间（高达72 h）和抑制剂供应的短暂延迟（30 s）通过增加Ce（III）覆盖减少了再浸泡活性。这些发现表明，促进更多Ce（III）析出的腐蚀防护系统可能会提高再浸稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.