Comparative study of the effects of methionine and tartaric acid in sulfuric acid anodizing
Year: 2025
Type: article
Abstract: This work investigates the comparative analysis of anodic oxide films formed in sulfuric acid with and without tartaric acid or methionine. The corrosion performance was evaluated using immersion and salt spray tests complemented by electrochemical impedance spectroscopy. The results indicated that the addition of tartaric acid or methionine in a sulfuric acid bath led to a lower anodizing current density, a thinner oxide layer, and more ordered surface morphology. Additionally, glow-discharge optical emission spectroscopy (GDOES) analysis suggests the incorporation of methionine components in the anodized layer, which provides active inhibition during corrosion tests. The tartaric acid and methionine-based anodic oxides presented a higher corrosion performance than anodic oxides formed in sulfuric acid without additives.
Source: Next Materials
Authors: Bashir Jelani Usman, Uyime Donatus
Institution: University of Manchester
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,280
OpenAlex ID: W4408662543