Corrosion inhibition of WE43 Mg alloy by salicylic compounds: Influence of nitro substitution

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

Corrosion Science Pub Date : 2024-11-14 DOI:10.1016/j.corsci.2024.112558

François-Xavier Perrin , Nadja Leibl , Lénaïk Belec , Armand Fahs , Nicolas Caussé , Nadine Pébère

引用次数: 0

Abstract

The corrosion inhibition of WE43 Mg alloy by salicylic acid (SA) and 3,5-dinitrosalicylic acid (DNSA) was investigated in a 0.2 M NaCl solution using electrochemical techniques, pH measurements, inductive coupled plasma-optical emission spectroscopy (ICP-OES) and SEM-EDX analyses. SA has a poor performance while DNSA was efficient after some hours of immersion in the NaCl solution. The observed behaviour was attributed, for short immersion times, to a buffering effect of DNSA which delayed the Mg(OH)₂ crystal growth on the alloy surface, and for longer immersion times, to an enrichment of the corrosion products layer by the alloying elements.

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水杨酸化合物对 WE43 Mg 合金的缓蚀作用：硝基取代的影响

采用电化学技术、pH 值测量、电感耦合等离子体-光发射光谱（ICP-OES）和 SEM-EDX 分析，研究了水杨酸（SA）和 3,5-二硝基水杨酸（DNSA）在 0.2 M NaCl 溶液中对 WE43 镁合金的缓蚀作用。在 NaCl 溶液中浸泡数小时后，SA 的性能较差，而 DNSA 则很有效。在浸泡时间较短的情况下，观察到的行为可归因于 DNSA 的缓冲作用，它延迟了 Mg(OH)2 晶体在合金表面的生长；而在浸泡时间较长的情况下，则可归因于合金元素对腐蚀产物层的富集作用。

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.