Characterization and Sintering of Lead Zirconate-Titanate Powders

Two techniques — conventional calcining of mixed oxides and molten salt synthesis—have been used to prepare lead zirconate‐titanate powders for subsequent sintering experiments. Several characterization methods, including SEM microscopy and pressing behavior, were used to evaluate the primary partic...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 1983-10, Vol.66 (10), p.743-746
Main Authors: CHO, S.H., BIGGERS, JAMES V.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Technical ceramics
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Summary:Two techniques — conventional calcining of mixed oxides and molten salt synthesis—have been used to prepare lead zirconate‐titanate powders for subsequent sintering experiments. Several characterization methods, including SEM microscopy and pressing behavior, were used to evaluate the primary particle size and agglomerate state of the powders. In the powders produced by conventional calcining of mixed oxides, the primary particle size was strongly dependent on calcining temperature. These powders also contained a large proportion of very strong agglomerates. The powders produced using molten salt synthesis had a primary particle size nearly independent of processing temperature. The agglomerates formed appeared to be quite friable. Subsequent sintering experiments showed that grain growth was more pronounced with the conventionally calcined powders. The ceramics produced from molten synthesized powders had a more uniform grain size which was nearly independent of powder processing conditions. The densities of these ceramics were, however, always lower than those produced from conventionally calcined powders.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1983.tb10542.x