Naskar, Milan Kanti and Chatterjee, Minati and Ganguli, Dibyendu (2000) Phase transformation of sol-gel derived ZrO2-2RE2O3 (RE=Sm,Gd and Dy) spun fibres by ageing in humid atmosphere. Transactions of the Indian Ceramic Society, 59 (2). pp. 37-40. ISSN 0371-750X

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Zirconia fibres doped with 2 equivalent mol% of RE2O3 (RE = Sm, Gd and Dy) were prepared by spinning of acetate derived sols followed by calcination of the gel fibres thus obtained at 900°-1300°C for 1 h. The oxide fibres were characterized by X-ray diffraction (XRD) analysis. The fibres containing only tetragonal (t) phase were aged under controlled humidity at 150°-300°C for 8 h and in addition at 200°C for 2 and 5 h. The aged samples were then characterized by XRD analysis. Dy3+-doped zirconia showed the maximum tendency to undergo phase transformation from tetragonal (t) to monoclinic (m) phase because of its increased tendency for hydrolysis.

Item Type: Article
Subjects: Crystal Chemistry, Thermodynamics, Phase Equilibria
Divisions: Sol Gel
Depositing User: Bidhan Chaudhuri
Date Deposited: 19 Mar 2012 08:15
Last Modified: 10 Mar 2014 08:59

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