Effect of hydrogen charging on the corrosion behavior of AlNbTiZr alloy in acidic environments

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

Corrosion Science Pub Date : 2024-09-05 DOI:10.1016/j.corsci.2024.112438

引用次数: 0

Abstract

The effect of electrochemical hydrogen charging on the corrosion behavior of the AlNbTiZr high entropy alloy in a 0.5 M H₂SO₄ solution was investigated. The results revealed localized corrosion and cracks occurring after 120 h of charging, with failure analysis indicating transgranular cracking. Moreover, both the corrosion and passive current densities exhibited an increase with prolonged charging time from 0 h to 120 h. XPS analysis showed that the ratio of ${OH}^{-}$ to $O^{2 -}$ within the passive film increased from 0.379 to 0.854 as the time extended to 120 h. This observation suggested that hydrogenation diminished the alloys’ corrosion resistance.

查看原文本刊更多论文

充氢对 AlNbTiZr 合金在酸性环境中腐蚀行为的影响

研究了在 0.5 M H2SO4 溶液中电化学充氢对 AlNbTiZr 高熵合金腐蚀行为的影响。结果表明，充氢 120 小时后出现局部腐蚀和裂纹，失效分析表明为跨晶裂纹。此外，随着充电时间从 0 小时延长到 120 小时，腐蚀密度和无源电流密度都有所增加。XPS 分析表明，随着充电时间延长至 120 小时，被动膜中 OH- 与 O2- 的比率从 0.379 增至 0.854。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.