Biswas, Mridula and Bandyopadhyay, Siddhartha (2013) Synthesis of nano-crystalline multifibrous zirconia needle. Materials Research Bulletin, 48 (6). pp. 2409-2413. ISSN 0025-5408

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Abstract

Zirconia needles have been successfully synthesized using a simple inorganic sol-gel process without using any template. The method employs mixture of zirconium oxychloride octahydrate and sulphuric acid in aqueous medium. This process requires heat treatment at 40 degrees C for 2 h in an oven for nucleus formation. Complete formation of needle occurs after 17 days. The green needle retained its original shape after calcination at 1200 degrees C. Fired needles were of 1-2 cm in length and 5-50 mu m in diameter and possess monoclinic phase. Needles are composed of multiple fibres. Depending on the heat treatment temperature, crystallite size varies in the range of 8 to around 300 nm. (C) 2013 Published by Elsevier Ltd.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Non-Oxide Ceramics & Composites
Depositing User:	Bidhan Chaudhuri
Date Deposited:	04 Sep 2013 11:23
Last Modified:	12 Mar 2016 16:10
URI:	http://cgcri.csircentral.net/id/eprint/2102

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