Understanding the non-monotonic variation in the corrosion rate of Sn-Ni coatings with Ni addition by the analysis of texture and grain boundary constitution of the matrix phase and spatial distribution of the intermetallic phase in the coating microstructure.

Singh, AP and Srivastava, C (2023) Understanding the non-monotonic variation in the corrosion rate of Sn-Ni coatings with Ni addition by the analysis of texture and grain boundary constitution of the matrix phase and spatial distribution of the intermetallic phase in the coating microstructure. In: Corrosion Science, 211 .

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Abstract

Sn-Ni coatings (0–13 wt% Ni) were electrodeposited on mild steel. The highest (Rp = 18,561.1 Ω·cm2) and the lowest (Rp = 4756.7 Ω·cm2) corrosion resistance was observed for Sn-6 wt% Ni and Sn-13 wt% Ni coating, respectively. Higher corrosion resistance of Sn-6 wt% Ni coating was due to low energy (100) surface texture, low energy CSL boundaries and formation of Ni3Sn4 phase at grain boundaries. Higher corrosion rate of Sn-13 wt% Ni coating was due to highest fraction of high energy high angle grain boundaries, higher matrix strain and higher volume fraction of cathodic Ni3Sn4 phase. © 2022 Elsevier Ltd

Item Type:	Journal Article
Publication:	Corrosion Science
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd
Keywords:	Corrosion; Grain boundary constitution; Intermetallic; Sn-Ni coatings; Texture
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	24 Jan 2023 12:16
Last Modified:	24 Jan 2023 12:16
URI:	https://eprints.iisc.ac.in/id/eprint/79480

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