Optimization of pulse electrodeposition parameters for enhanced resistance to corrosion and hydrogen permeation of zinc coatings

IF 3 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materialia Pub Date : 2024-10-24 DOI:10.1016/j.mtla.2024.102273

Akshay Yadav, Akhand Pratap Singh, Chandan Srivastava

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Abstract

Corrosion and hydrogen permeation resistance of pulse electrodeposited Zn coatings were correlated with coating micro-texture and strain. The maximum and minimum corrosion resistance were noted for D6F75 (duty cycle 60; frequency 75 Hz) and D8F25 (duty cycle 80; frequency 25 Hz), respectively. The D6F75 coating exhibited a higher fraction of low-energy low-angle grain boundaries (LAGBs) and a preferred texture of

(3 \bar{1} \bar{2} 1)

whereas the D8F25 coating exhibited comparatively low LAGBs fractions and

(2 \bar{1} \bar{1} 0)

orientation. High resistance to hydrogen permeation exhibited by the D6F75 coating was attributed to hydrogen trapping within the coating, which reduced the micro-strain within the coating and diminished the hydrogen concentration gradient, thereby promoting greater surface recombination.

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优化脉冲电沉积参数以增强锌镀层的抗腐蚀和抗氢渗透能力

脉冲电沉积锌镀层的耐腐蚀性和抗氢渗透性与镀层的微观纹理和应变有关。D6F75（占空比 60；频率 75 Hz）和 D8F25（占空比 80；频率 25 Hz）的耐腐蚀性分别最大和最小。D6F75 涂层的低能低角晶界（LAGBs）比例较高，优先纹理为（31¯2¯1），而 D8F25 涂层的 LAGBs 比例相对较低，取向为（21¯1¯0）。D6F75 涂层表现出的高抗氢渗透性归因于涂层内的氢截留，这降低了涂层内的微应变，减小了氢浓度梯度，从而促进了更大的表面重组。

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来源期刊

Materialia MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.40

自引率

2.90%

发文量

345

审稿时长

36 days

期刊介绍： Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials. Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).