Effect of geometrically necessary dislocations induced strain on the corrosion behavior of Ni coatings with different surfactants

Jyotheender, K Sai and Srivastava, Chandan (2022) Effect of geometrically necessary dislocations induced strain on the corrosion behavior of Ni coatings with different surfactants. In: Materialia, 22 . ISSN 25891529

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Abstract

Ni coatings were electrodeposited using surfactants of different polarities. Pole figures analysis showed similar surface texture ({110} surface plane) for all coatings. Coating with cationic (CTAB) surfactant contained the highest fraction of low energy low angle grain boundaries (LAGBs) but showed the highest corrosion rate due to geometrically necessary dislocations (GNDs) distribution. GNDs in coating with cationic surfactant promoted high grain orientation spread (GOS) values, suggesting increased coating strain. Coatings with anionic (SLS) surfactants showed higher corrosion resistance than other coatings because of the presence of GNDs as strings along the boundaries, which yielded lower coating strain

Item Type:	Journal Article
Publication:	Materialia
Publisher:	Elsevier B.V.
Additional Information:	The copyright of this article belongs to the Elsevier B.V.
Keywords:	Corrosion; Electron backscatter diffraction (EBSD); Geometrically necessary dislocations (GNDs); Nickel coating
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	24 May 2022 06:36
Last Modified:	24 May 2022 06:36
URI:	https://eprints.iisc.ac.in/id/eprint/72345

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