Thick coatings of porous zirconia by anodization of zirconium in an organic electrolyte

Patel, Subodh Nath and Jayaram, Vikram and Banerjee, Dipankar (2017) Thick coatings of porous zirconia by anodization of zirconium in an organic electrolyte. In: SURFACE & COATINGS TECHNOLOGY, 323 . pp. 2-9.

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Abstract

Anodization, a traditional route to the fabrication of dense protective coatings or coatings with ordered arrays of pores, is used to fabricate thick coatings of zirconia. The initial transients in high current density that characterize the formation of a stable pore assembly are followed by a long period of gradually diminishing growth rate during which tubes of zirconia grow inwards into the Zr substrate. Following optimization of the voltage and electrolyte composition, coatings of 120 and 200 pm may be grown in 6 and 24 h. It is shown that diffusion of ions in solution towards the oxide-electrolyte interface is rate controlling, leading to parabolic growth kinetics. (C) 2017 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	SURFACE & COATINGS TECHNOLOGY
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	21 Jul 2017 08:57
Last Modified:	21 Jul 2017 08:57
URI:	http://eprints.iisc.ac.in/id/eprint/57438

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