Chakrabarty, P K and Chatterjee, Minati and Naskar, Milan Kanti and Siladitya, B and Ganguli, Dibyendu (2001) Zirconia fibre mats prepared by a sol-gel spinning technique. Journal of the European Ceramic Society, 21 (3). 355 -361 . ISSN 0955-2219

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Fine grained, polycrystalline, stabilized zirconia (with 10 wt.% Y2O3) fibre mats having a web-like structure were fabricated directly during synthesis by a sol-gel spinning technique using a multi-orifice spinneret. Points of fusion in gel fibre mats helped in the formation of a web-like fibrous body having reasonable strength and very little dust formation after calcination. Strong and resilient fibres with diameters in the range 3-10 micron were obtained by a single-step sol-gel method from spinnable acetate sols devoid of organics as the binder aid. The Y2O3 additive in the fibre mats helped to retain the tetragonal phase even at 1600 degreesC by inhibiting grain growth. The health hazard involved with airborne fibres was significantly minimized in the developed zirconia mats by applying sol-gel coatings on their surfaces followed by calcination. The resulting samples exhibited reasonably coherent coatings by anchoring loose surface fibres in a network of zirconia

Item Type: Article
Uncontrolled Keywords: Sol-gel Processes; Fibres; ZrO2; Refractories
Subjects: Processing Science
Divisions: Sol Gel
Depositing User: Mrs Chandana Patra
Date Deposited: 14 Mar 2012 11:34
Last Modified: 26 May 2016 05:21

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