Method of preparing barium, titanium, zirconium oxide ferroelectric ceramic composition
Patent
·
OSTI ID:5738079
This patent describes a method for preparing a barium titanium zirconium oxide ferroelectric ceramic composition. It comprises reacting tetraalkyl titanate and tetraalkyl zirconate in appropriate amounts to produce (Ti{sub 1{minus}x}Zr{sub x}) alkoxide wherein 021 x {le} 0.25; reacting the (Ti{sub 1{minus}x}Sr{sub x}) alkoxide to form a two phase mixture of TiZrO{sub 4} and (Ti{sub 1{minus}s}Zr{sub s})O{sub 2}, wherein s is the solubility limit for ZrO{sub 2} in TiO{sub 2}; admixing the (Ti{sub 1{minus}s}Zr{sub s})O{sub 2} and TiZrO{sub 4} with a BaO precursor, the BaO precursor, (Ti{sub 1{minus}s}Zr{sub s})O{sub 2} and TiZrO{sub 4}; and heading the admixture for a period of time and at a sufficient temperature to produce Ba(Ti{sub 1{minus}x}Zr{sub x})O{sub 3} wherein 0 {lt} x {le} 0.25.
- Assignee:
- GTE Products Corp., Danvers, MA (United States)
- Patent Number(s):
- A; US 5032559
- Application Number:
- PPN: US 7-526957
- OSTI ID:
- 5738079
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
ALKOXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
FERROELECTRIC MATERIALS
KINETICS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PRECURSOR
REACTION KINETICS
SOLUBILITY
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
ALKOXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
FERROELECTRIC MATERIALS
KINETICS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PRECURSOR
REACTION KINETICS
SOLUBILITY
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES