Chatterjee, Minati and Chatterjee, A and Ganguli, Dibyendu (1992) Preparation of ZrO2-CaO and ZrO2-MgO fibres by alkoxide Sol-Gel processing. Ceramics International, 18 (1). pp. 43-49. ISSN 0272-8842

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Abstract

Extensive studies were made on the spinnability of Zr(O-nC3H7)4-derived sols for the preparation of ZrO2-CaO and ZrO2-MgO fibres. An improved preparative route was proposed in which acetylacetone controlled the hydrolyzability of the alkoxide and 2-methoxyethanol served as a slow-drying solvent. The advantages of the method of sol preparation over the known methods were highlighted. Crystallization behaviour of the gel fibres was studied mostly up to 1300-degrees-C for ZrO2-CaO fibres (up to 20 %mol CaO) and up to 1000-degrees-C for ZrO2-MgO fibres (up to 12 %mol MgO). ZrO2-CaO fibres (7-11% mol CaO) were Found to yield only the tetragonal and cubic polymorphs of ZrO2 after heating at 1300-degrees-C/4h and furnace cooling. ZrO2-MgO fibres, on the other hand, showed exsolution of MgO above 800-degrees-C and development of monoclinic ZrO2.

Item Type:	Article
Subjects:	Engineering Materials
Divisions:	Sol Gel
Depositing User:	Bidhan Chaudhuri
Date Deposited:	27 Nov 2013 09:15
Last Modified:	29 Feb 2016 17:58
URI:	http://cgcri.csircentral.net/id/eprint/2319

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