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RESEARCH PRODUCT
About the mechanism of the solid-way synthesis of barium metatitanate. Industrial consequences
Jean-claude Niepcesubject
Chemical engineeringChemistryPhase (matter)Solid-stateOrganic chemistrychemistry.chemical_elementGeneral Materials ScienceBariumGeneral ChemistryDielectricCondensed Matter PhysicsCeramic capacitorCrystallographic defectdescription
Abstract Barium metatitanate BaTiO 3 is the main component of the dielectric material of class 2 ceramic capacitors. The solid state reaction between BaCO 3 and TiO 2 is still one of the main industrial ways for the BaTiO 3 preparation. The aim of the paper is to propose a coherent set of interfacial reactions in order to explain all the experimental results previously published about this well known solid state reaction. The paper gives at first a summary of the main experimental results. Then all the interfacial reactions at the various stages of the advancement are proposed. All these reactions involve the same main point defects in BaTiO 3 which are barium and oxygen vacancies. It has been supposed that they are also the involved defects in the intermediate phase Ba 2 TiO 4 . Improvements of the BaTiO 3 solid way synthesis are examined.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-11-01 | Solid State Ionics |