Adhesion of anodic films on aluminum-lithium alloys

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Corrosion

DOI:https://doi.org/10.5006/1.3280496· OSTI ID:6388055

Skeldon, P; Zhou, X; Thompson, G E; Wood, G C ^[1]; Habazaki, H ^[2]; Shimizu, K ^[3]

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1. Univ. of Manchester Institute of Science and Technology (United Kingdom). Corrosion and Protection Centre
2. Tohoku Univ., Sendai (Japan). Inst. for Materials Research
3. Keio Univ., Hiyoshi, Yokohama (Japan). University Chemical Lab.

During anodizing of certain binary Al alloys, the growing anodic oxide film detaches from the alloy substrate, subsequently allowing access of the electrolyte to the underlying bare metal and re-anodizing at a high current density. An Al-3% Li alloy was shown to reveal these phenomena, which are associated with the development of voids at the alloy/film interface as the film thickens. The development of voids, assisting the film detachment, was attributed to the reduced volume of lithium oxide (Li[sub 2]O) formed at the alloy/film interface and compared to that of alumina (Al[sub 2]O[sub 3]).

• OSTI ID: 6388055
• Journal Information: Corrosion, Journal Name: Corrosion Vol. 55:6; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ADHESION
ALLOYS
ALUMINIUM ALLOYS
CORROSION PROTECTION
FILMS
INTERFACES
LITHIUM ALLOYS
MICROSCOPY
VOIDS