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Preparation and Stoichiometry Effects on Microstructure and Properties of High Purity BaTiO3

机译：制备及化学计量学对高纯BaTiO3微观结构和性能的影响

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Effects of stoichiometry, precursor origin, and powder synthesis method on sintered microstructure and dielectric properties of commercial high purity BaTi03 were examined, with a view to potential interchangeability. Powders used were prepared by conventional calcination, by precipitation from oxalate precursors and by hydrothermal synthesis. Stoichometric (Ba:Ti) ratios were in the range 0.987 to 1.002. Characterization by SEM, x-ray diffraction, BET surface area and particle size analysis revealed significant differences, particularly in agglomerate structure, resulting in different microstructural development. Stoichiometric effects on microstructure were also significant if predictable. However, the combined effects of agglomerate structure and stoichiometry on measured dielectric properties could not be predicted, hence interchangeability of powders could not be achieved.

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Buchanan, R. C.; Maurice, A. K.;
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年度 1986
页码 p.1-42
总页数 42
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Stoichiometry; Microstructure; Barium titanates; Dielectric properties; Agglomerates; High rate; Oxalates; Particle size; Powders; Precursors; Purity; Ratios; Sintering; Structures; Surfaces; Synthesis; X ray diffraction;

机译：化学计量;微观结构;钛酸钡;介电性能;附聚物;高速率;草酸盐;粒度;粉末;前体;纯度;比率;烧结;结构;表面;合成; X射线衍射;

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Preparation and Stoichiometry Effects on Microstructure and Properties of High Purity BaTiO3

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