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Reversible reactions within anodic oxide films on titanium electrodes

✍ Scribed by C.K. Dyer; J.S.L. Leach

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
851 KB
Volume
23
Category
Article
ISSN
0013-4686

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✦ Synopsis

Evidence is preseoted for a reversible reaction occurring within the bulk of the surface oxide She on Ti electrodes at negative poteutials. Higb frequency impedance measurements give results characteristic of a buIk phenomenon and clearly distinguish the behaviour of filmed Ti electrodes from that of some other "valve" metals at low potentials. The potential/pH dependenoes of the impedance minima are discussed in terms of various models for the reversible formation of a hydrated oxide in the bulk of the oxide film. INTRODUCIION Titanium electrode exhibit large capacitance and conductance maxima at negative potentials in aqueous

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