Work

Comparative study of anodic film formation on high-strength aluminium alloys in tartaric–sulphuric acid electrolyte

Year: 2025

Type: article

Abstract: The anodising behaviour of four high-strength aluminium alloys (AA2024-T3, AA2198-T8, AA2198-T851, and AA7475-T761) in tartaric–sulphuric acid (TSA) under identical constant voltage conditions was investigated. Significant differences were found in current density, anodic film thickness, and anodising efficiency. An inverse relationship was observed between total charge consumption and film thickness. Among the alloys, AA7475-T761 exhibited the greatest film thickness and highest efficiency, whereas AA2024-T3 showed the highest charge consumption and the thinnest film. The Al–Cu–Li alloys exhibited similar anodising behaviour. All anodic films revealed porous, sponge-like morphologies attributed to oxygen evolution. Variations in film thickness are correlated to alloy compositions.

Source: Transactions of the IMF

DOI: 10.1080/00202967.2025.2569165

Authors: João Victor de S. Araujo, Jinghui Chen, Jiru Qin, Isolda Costa, Xiaorong Zhou

Institutions: Instituto de Pesquisas Energéticas e Nucleares, National Nuclear Energy Commission, University of Manchester

Language: English

Topic: Anodic Oxide Films and Nanostructures

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Fundação de Amparo à Pesquisa do Estado de São Paulo, Engineering and Physical Sciences Research Council

OpenAlex ID: W4415297489

FWCI: 0.424

Cites: 72

Cited by: 2

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