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RESEARCH PRODUCT
Effect of Composition on the Photoelectrochemical Behavior of Anodic Oxides on Binary Aluminum Alloys
Monica SantamariaPeter SkeldonF. Di QuartoG.e. Thompsonsubject
PASSIVE FILMSMaterials scienceAlloyOxideTantalumchemistry.chemical_elementTungstenengineering.materialchemistry.chemical_compoundWO3Materials ChemistryElectrochemistryPHOTOEMISSION PROCESSESDEPOSITIONPhotocurrentSPECTROSCOPYRenewable Energy Sustainability and the EnvironmentAnodizingFILM FORMATIONMetallurgyIONIC TRANSPORTCORROSIONCondensed Matter PhysicsTA2O5Surfaces Coatings and FilmsElectronic Optical and Magnetic MaterialschemistryChemical engineeringengineeringPHOTOEMISSION PROCESSES; IONIC TRANSPORT; FILM FORMATION; PASSIVE FILMS; CORROSION; TA2O5; WO3; CRYSTALLIZATION; SPECTROSCOPY; DEPOSITIONCRYSTALLIZATIONTernary operationTitaniumdescription
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, E opt g , of different oxides are in accordance with predictions based on the correlation between E opt g and the difference of electronegativities of the oxide constituents, indicating potential for tailoring solid state properties of ternary oxides.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-01-01 | Journal of The Electrochemical Society |