Details

Autor(en) / Beteiligte

• Yukthesh Venkat, S.
• Roohan Farooq Lala, S.
• Singh, Akhand Pratap
• Srivastava, Chandan

Titel

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

Ist Teil von

• Journal of electronic materials, 2023-06, Vol.52 (6), p.3797-3806

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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