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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 52  1993
Sintering, Microstructure and Mechanical Properties of Tetragonal Zirconia Poly crystalline Ceramics Prepared from Sol-Gel Powders*
N. M. (ioKHALE. R. DAYAL, S.C. SHARMA ANIJ RAMn LAL
Pages : 12-15
DOI : 10.1080/0371750X.1993.10804567
Abstract
Tetragonal zirconia powders containing 1-5 mol?~ Y 10J were prepared by the sol-gel technique and wnsolidated to dense ceramic.-; by cold pressing and sintering as well as by hot pressing. TZP ceramics of nearly theoretical density could be obtained by hot pressing the powders at a considerably low temperature of 1500°C. Ceramic compositions having 3 mol% Y 10J exhibited the maximum strength and fracture toughnes.i. Hot pressed ceramics were found to he superior to those obtained by atmosphere sintering in respect of sinterability, microstructural control and mechanical property dclclupmenL
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