Study on the crystallographic orientation dependent electrochemical corrosion rates of aluminum and its binary alloys

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj Materials Degradation Pub Date : 2024-07-16 DOI:10.1038/s41529-024-00490-6

Haini Jin, Yudong Sui, Xiaohua Yu, Hao Zhou, Jing Feng, Yehua Jiang

引用次数: 0

Abstract

This paper provides a study for crystallographic orientation-dependent corrosion rate of aluminum employing an ab initio model with inputs from first-principles calculations. Results showed that the sequence of corrosion rate is in the order of (111) < (410) < (331) < (221) < (321) < (211) < (110) < (100) < (210) < (320) < (310) < (311) for aluminum. The predicted corrosion current densities for (111), (110), and (100) surfaces are in general agreement with the experimental results. The alloying effects were further investigated employing this model with results validated via the polarization curves of alloyed aluminum.

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铝及其二元合金的电化学腐蚀率与晶体取向有关的研究

本文利用第一性原理计算的输入建立了一个原子序数模型，对铝的晶体学取向依赖性腐蚀速率进行了研究。结果表明，铝的腐蚀速率顺序为 (111) < (410) < (331) < (221) < (321) < (211) < (110) < (100) < (210) < (320) < (310) < (311) 。预测的 (111)、(110) 和 (100) 表面的腐蚀电流密度与实验结果基本一致。利用该模型进一步研究了合金效应，并通过合金铝的极化曲线验证了结果。

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

npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

7.80

自引率

7.80%

发文量

审稿时长

6 weeks

期刊介绍： npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies