Direct precipitation of lead zirconate titanate by the hydrothermal method
Direct precipitation of fine powders of lead zirconate titanate (PZT) in the complete range of solid solution, is investigated under hydrothermal conditions, starting from lead oxide and titania/zirconia mixed gels. The perovskite phase is formed in the temperature range of 165 - 340/sup 0/C. Sequence of the hydrothermal reactions is studied by identifying the intermediate phases. The initial formation of PbO:TiO/sub 2/ solid solution is followed by the reaction of the same with the remaining mixed gels giving rise to X-ray amorphous PZT phase. Further, through crystallite growth, the X-ray crystalline PZT is formed. This method can be extended for the preparation of PLZT powder as well. The resulting powders are sinterable to high density ceramics.
- Research Organization:
- Inorganic and Physical Chemistry Department, Indian Institute of Science, Bangalore
- OSTI ID:
- 5718170
- Journal Information:
- Mater. Res. Bull.; (United States), Journal Name: Mater. Res. Bull.; (United States) Vol. 19:11; ISSN MRBUA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360601* -- Other Materials-- Preparation & Manufacture
CERAMICS
CHALCOGENIDES
COLLOIDS
CRYSTAL GROWTH
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALS
DISPERSIONS
GELS
HYDROTHERMAL SYNTHESIS
LEAD COMPOUNDS
LEAD OXIDES
MATERIALS
METALLURGY
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POWDER METALLURGY
PRECIPITATION
PRODUCTION
PZT
SEPARATION PROCESSES
SINTERED MATERIALS
SOLID SOLUTIONS
SOLUTIONS
SYNTHESIS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS