Effect of Zn Incorporation on the Evolution of Texture, Strain, Grain Boundary Constitution, and Corrosion Behavior of Electrodeposited SnZn Coatings

Pratap Singh, Akhand and Gupta, Abhay and Sai Jyotheender, K and Srivastava, Chandan (2022) Effect of Zn Incorporation on the Evolution of Texture, Strain, Grain Boundary Constitution, and Corrosion Behavior of Electrodeposited SnZn Coatings. In: Metallurgical and Materials Transactions A . ISSN 1073-5623

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Abstract

Corrosion behavior of electrodeposited SnZn coatings with varying Zn content (5, 12, 17, and 23 wt pct) was correlated with the texture, grain boundary constitution, and strain in the matrix Sn phase. Pristine Sn coating (without Zn) exhibited the highest corrosion resistance due to highest fraction of low-angle grain boundaries (LAGBs) and lowest coating strain. Upon Zn incorporation, the coating corrosion resistance first decreased until Sn-12 wt pct Zn and then increased till Sn-23 wt pct Zn. The lower corrosion resistance of Sn-12 wt pct Zn coating was due to high strain and a higher fraction of high-energy high-angle grain boundaries (HAGBs). The high corrosion resistance of Sn-23 wt pct Zn coating was due to a higher fraction of low-energy coincidence site lattice boundaries (CSLs) and preferred low-energy (100) surface texture. © 2022, The Minerals, Metals & Materials Society and ASM International.

Item Type:	Journal Article
Publication:	Metallurgical and Materials Transactions A
Publisher:	Springer
Additional Information:	The copyright of this article belongs to the Springer.
Keywords:	Binary alloys; Corrosion resistant coatings; Corrosive effects; Electrodeposition; Electrodes; Grain boundaries; Textures; Tin; Tin alloys;Coincidence site lattice boundary; Corrosion behaviour; Energy; Grain-boundaries; High angle grain boundaries; High strains; Low angle grain boundaries; Lower energies; matrix; Zn content; Corrosion resistance
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	23 May 2022 09:35
Last Modified:	23 May 2022 09:35
URI:	https://eprints.iisc.ac.in/id/eprint/72405

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