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Hydration and Structural Transformations during Titanium Anodization under Alkaline Conditions

Ti anodic films were potentiostatically grown in 0.1 M NaOH aqueous solutions, in a potential range in which the voltammetric characterization showed an anodic shoulder related to the oxidation of TixOy (with y/x < 2) oxides. A variation in the density of donors and the flat band potential obtained... Full description

Main Author: Acevedo-Pena, P.
Contributors: Vazquez-Arenas, J. | Author
Cabrera-Sierra, R. | Author
Lartundo-Rojas, L. | Author
Gonzalez, I. | Author
Published: Pennington, Electrochemical Society, 2013
Kongresse: Meeting of the Electrochemical Society 222 2012.10.07-2012.10.12 Honolulu, HI, US
ECS Meeting 222 2012.10.07-2012.10.12 Honolulu, HI, US
Meeting of the Electrochemical Society 222nd 2012.10.07-2012.10.12 Honolulu, HI, US
PRiME 2012 2012.10.07-2012.10.12 Honolulu, HI, US
Pacific Rim Meeting on Electrochemical and Solid-State Science 2012 2012.10.07-2012.10.12 Honolulu, HI, US
PRiME 2012 2012.10.07-2012.10.12 Honolulu, HI, US
Pacific Rim Meeting on Electrochemical and Solid-State Science 2012.10.07-2012.10.12 Honolulu, HI, US
Corrosion 2012.10.07-2012.10.12 Honolulu, HI, US
Corrosion 2012.10.07-2012.10.12 Honolulu, HI, US
Contained in: ECS Transactions Vol. 50, No. 31 (2013), p. 21-32
Fulltext access:
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Links: Additional Link (dx.doi.org)
ISSN: 1938-5862
Additional Keywords: ANODISCHE-OXIDATION
DEHYDRATATION
DIFFUSION
HYDRATATION
KINETISCHER-PARAMETER
OXIDATION
PASSIVITAET
PUNKTFEHLER
SAUERSTOFF
TITAN
VERSUCHSDATEN
WAESSRIGE-LOESUNG
DOI: 10.1149/05031.0021ecst
Language: English
Notes: Copyright: Metadaten: TEMA, Copyright WTI-Frankfurt eG
Copyright: (C) Alle Rechte beim Herausgeber
Physical Description: 12 Seiten, Bilder, 53 Quellen
ID (e.g. DOI, URN): 10.1149/05031.0021ecst
PPN (Catalogue-ID): WTI054391768
Note: WTI TEMA DB
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Internes Format
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520 |a Ti anodic films were potentiostatically grown in 0.1 M NaOH aqueous solutions, in a potential range in which the voltammetric characterization showed an anodic shoulder related to the oxidation of TixOy (with y/x < 2) oxides. A variation in the density of donors and the flat band potential obtained by EIS measurements was related to changes in Ti suboxides proportion, confirmed by AR-XPS measurements. A modified Point Defect Model (PDM) was fitted to EIS experimental data in order to estimate the kinetic parameters describing the passivity of the Ti films. The model accounts for the formation and diffusion of oxygen and hydroxyl vacancies during film growth. The kinetic parameters related to film dehydration (e.g. hydroxyl vacancies) decrease as the formation potential becomes more positive, suggesting that the film hydration is crucial in the structure of the oxide grown during Ti anodization. 
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700 1 |a Gonzalez, I.  |e verfasserin  |4 aut 
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711 2 |a Corrosion  |d 2012.10.07-2012.10.12  |c Honolulu, HI, US 
711 2 |a Corrosion  |d 2012.10.07-2012.10.12  |c Honolulu, HI, US 
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