Corrosion Inhibition of AZ31-xLi (x = 4, 8, 12) magnesium alloys in sodium chloride solutions by aqueous molybdate

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

Corrosion Science Pub Date : 2024-10-18 DOI:10.1016/j.corsci.2024.112513

Maria A. Osipenko , Andrei V. Paspelau , Aliaksandr A. Kasach , Jacek Ryl , Konrad Skowron , Janusz Adamiec , Irina I. Kurilo , Dzmitry S. Kharytonau

引用次数: 0

Abstract

Corrosion of lithium-containing AZ31 magnesium alloys AZ31-xLi (x = 4, 8, and 12 wt%) has been examined in 0.05 M NaCl solution with and without 10–150 mM of Na₂MoO₄ inhibitor. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and dynamic electrochemical impedance spectroscopy (DEIS) measurements were used to correlate the phase composition and microstructure of the alloys with their corrosion propensity and effectiveness of the molybdate inhibitor, giving high inhibition efficiency (>85%) at concentrations higher than ca. 35 mM. Post-corrosion microstructure, Raman, and X-ray photoelectron spectroscopy analyses allowed to provide the inhibition mechanism of AZ31-xLi alloys by molybdate ions.

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钼酸盐水溶液对氯化钠溶液中 AZ31-xLi（x = 4、8、12）镁合金的缓蚀作用

在含有或不含有 10-150 mM Na2MoO4 抑制剂的 0.05 M NaCl 溶液中，研究了含锂 AZ31 镁合金 AZ31-xLi（x = 4、8 和 12 wt%）的腐蚀情况。采用电位极化、电化学阻抗谱（EIS）和动态电化学阻抗谱（DEIS）测量方法，将合金的相组成和微观结构与其腐蚀倾向和钼酸盐抑制剂的有效性联系起来，当浓度高于约 35 mM 时，抑制效率高（85%）。腐蚀后的微观结构、拉曼光谱和 X 射线光电子能谱分析提供了钼酸盐离子对 AZ31-xLi 合金的抑制机制。

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.