6533b7ddfe1ef96bd1274e17

RESEARCH PRODUCT

Structural and compositional analysis of anodic films on Al-Nb sputter-deposited alloys

Monica SantamariaFrancesco Di QuartoM. GentileP. Skeldon G. E. Thompson

subject

Anodic films Al-Nb sputter-deposited alloys

description

The photoelectrochemical behavior of anodic films on Al alloys, containing titanium, tantalum, and tungsten (valve metals), has been studied as a function of alloy composition and anodizing conditions. Photocurrent spectroscopy has been used to get information on bandgap and the flatband potential values of different mixed oxides. Both insulator-like and semiconducting behavior has been observed for anodic oxides grown on Al-W and Al-Ti alloys dependent on alloy initial composition. Optical bandgap values, Eg,opt, of different oxides are in accordance with predictions based on the correlation between Eg,opt and the difference of electronegativities of the oxide constituents, indicating potential for tailoring solid state properties of ternary oxides.

yearjournalcountryeditionlanguage
2006-01-01
http://hdl.handle.net/10447/8779