Preparation of Zirconia-Yttrium Fibres from Steady Precursor by Sol-Gel Technique

Pei Pei Xu; Xin Fu Wang; Shun De Fu; Jian Feng Xu

doi:10.4028/www.scientific.net/AMR.535-537.2087

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 535-537Preparation of Zirconia-Yttrium Fibres from Steady...

Preparation of Zirconia-Yttrium Fibres from Steady Precursor by Sol-Gel Technique

Abstract:

Polycrystalline tetragonal Y-ZrO2 fibres were fabricated via sol-gel technique by the centrifugal filament method using zirconium oxychloride octahydrate as the raw material. The spinnable zirconia sol was obtained by concentrating the solution, which the molar ratios of H2O2/ZOC and HA/ZOC were 3.0 and 0.5-1.0, respectively. FT-IR, TG/DTA, XRD and SEM were used to characterize the chemical composition and morphology of zirconia fibres. The bridging bidentate coordination between the carboxyl group and zirconium polymer can promote the spinnability of sols. The polycrystalline zirconia fibres structures are metastable tetragonal phase after heat treatment at 1200°C in 1h. The distribution of fibres is not uniform with a diameter from 5 μm to 10 μm. The single fibre has a uniform diameter and smooth surface, without any defect on the surfaces. The grain size of ZrO2 fibers increases with the heat treatment temperature gradually.

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Advanced Materials Research (Volumes 535-537)

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2087-2091

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https://doi.org/10.4028/www.scientific.net/AMR.535-537.2087

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June 2012

Authors:

Pei Pei Xu, Xin Fu Wang, Shun De Fu, Jian Feng Xu

Keywords:

Heat Treatment, Sol-Gel (SG), Zirconia Fibres

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