Please use this identifier to cite or link to this item:
Title: Lead zirconate titanate via reaction sintering of hydroxide precursors
Authors: Junmin, X. 
Wang, J. 
Issue Date: Apr-1999
Citation: Junmin, X.,Wang, J. (1999-04). Lead zirconate titanate via reaction sintering of hydroxide precursors. Journal of Materials Research 14 (4) : 1503-1509. ScholarBank@NUS Repository.
Abstract: Lead zirconate titanate (PZT) has been successfully fabricated via a unique one-step sintering processing route, which is simpler than the traditional precursor-calcination-milling-pelleting-sintering route and is able to deliver an enhanced sintered density at a much reduced sintering temperature. The hydroxide precursor was prepared by coprecipitation from a mixed nitrate solution containing Pb2+, Zr4+, and Ti4+ ions, and it was then compacted into pellets without being calcined at a low temperature. The precursor pellets were dehydrated at 400, 500, and 600°C for 4 h, respectively, followed by an isostatic pressing at 350 MPa, prior to being sintered at a high temperature. Dehydration temperature has a large impact on the sintering behavior of these hydroxide-derived PZT ceramics. The PZT dehydrated at 400°C was seriously cracked when sintered at temperatures ranging from 950 to 1150°C, due to the incomplete dehydration. A sintered density of 99.2% theoretical density was obtained at 1050°C for 2 h for the powder pellet dehydrated at 500°C for 4 h. It exhibits a dielectric constant of 1024 and a dielectric loss of 2.1% at a frequency of 1 kHz at room temperature. A calcination at a too-high temperature, e.g., 600°C, results in a reduction in the sinterability of the precipitate-derived PZT ceramic.
Source Title: Journal of Materials Research
ISSN: 08842914
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Nov 29, 2020

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.