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

Yadav, A and Singh, AP and Srivastava, C (2024) Optimization of pulse electrodeposition parameters for enhanced resistance to corrosion and hydrogen permeation of zinc coatings. In: Materialia, 38 .

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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 (31¯2¯1) whereas the D8F25 coating exhibited comparatively low LAGBs fractions and(21¯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. © 2024 Acta Materialia Inc.

Item Type:	Journal Article
Publication:	Materialia
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to the publishers.
Keywords:	Corrosion resistance; Microbial corrosion; Textures; Zinc alloys; Zinc coatings, Duty-cycle; Hydrogen permeation; Hydrogen permeation resistance; Low angle grain boundaries; Micro-strain; Micro-texture; Microstructural engineering; Optimisations; Permeation resistance; Pulse electrodeposition, Corrosion resistant coatings
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	21 Nov 2024 01:22
Last Modified:	21 Nov 2024 01:22
URI:	http://eprints.iisc.ac.in/id/eprint/86816

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