Biswas, M and Bandyopadhyay, S (2013) Zirconia fiber via biotemplate synthesis route. Materials Letters, 101. pp. 13-16. ISSN 0167-577X

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Abstract

Monoclinic zirconia fiber was fabricated through a novel chemical synthesis route using economically cheap biotemplate and aqueous zirconyl oxychlbride. Zirconyl oxychloride gets converted through various steps as follows: hydroxylation to remove Cl-, nitrate addition and subsequently further hydroxylation. The process of green fiber formation lies on the reaction between hydroxyl groups of biotemplate and zirconium ion on the cell walls of biotemplate. With heat treatment at 1200 degrees C for 2 h, the deposited hydroxide converts to oxide in the form of sintered fiber. Fibers are handleable, 1-10 cm long and 7-10 mu m wide. The fibers are made of monoclinic nanocrystals with crystallite size ranging mostly between 40 and 100 nm (compared to 32-34 nm as calculated from the Scherrer equation) with discrete ones as large as 400 nm. (C) 2013 Elsevier B.V. All rights reserved.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	04 Sep 2013 11:23
Last Modified:	04 Sep 2013 11:23
URI:	http://cgcri.csircentral.net/id/eprint/2101

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