Molybdenum Concentration-Induced Texture and Grain Boundary Engineering of Electrodeposited Tin-Molybdenum Coatings for Enhanced Corrosion Resistance

Yukthesh Venkat, S and Roohan Farooq Lala, S and Singh, AP and Srivastava, C (2023) Molybdenum Concentration-Induced Texture and Grain Boundary Engineering of Electrodeposited Tin-Molybdenum Coatings for Enhanced Corrosion Resistance. In: Journal of Electronic Materials .

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Abstract

Sn-Mo alloy coatings with varying molybdenum concentrations (2.7 wt., 5 wt., 7 wt., 9 wt. Mo) were electrodeposited on mild steel substrate. All the coatings were uniform and compact. The corrosion rates of all the Sn-Mo coatings were lower than that of pristine Sn coating. Between the Sn-Mo coatings, a non-monotonic variation in the corrosion rate was noted with increasing Mo addition, and at an optimum Mo addition of 5 wt., very high corrosion resistance behavior was noted. An 89 decrease in the corrosion current density was noted for 5 wt. addition of Mo when compared to pure Sn coating. The enhancement in the corrosion rate at optimum Mo addition was due to the lower-energy (100) surface texture and higher fraction of low-energy low-angle grain boundaries (LAGBs). The higher corrosion rate of pristine Sn coatings was due to the high-energy near (101) surface texture and higher fraction of high-energy, high-angle grain boundaries (HAGBs). Graphical Abstract: Figure not available: see fulltext.. © 2023, The Minerals, Metals & Materials Society.

Item Type:	Journal Article
Publication:	Journal of Electronic Materials
Publisher:	Springer
Additional Information:	The copyright for this article belongs to Springer.
Keywords:	Binary alloys; Corrosion rate; Corrosion resistance; Corrosion resistant alloys; Corrosion resistant coatings; Electrodes; Grain boundaries; Molybdenum alloys; Textures; Tin alloys, Energy; Grain boundary constitution; Grain boundary engineering; Grain-boundaries; Lower energies; Mo additions; Mo coatings; Sn-mo coating; Surface textures; Texture boundary, Electrodeposition
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	21 Apr 2023 10:47
Last Modified:	21 Apr 2023 10:47
URI:	https://eprints.iisc.ac.in/id/eprint/81380

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