Published April 2004 | Version v1
Journal article Metadata-only

Synthesis and properties of phases in the system BaCO3-PbO-Nb2O5

Creators

  • 1. Ural'skij Gosudarstvennyj Univ., Ekaterinburg (Russian Federation)

Description

Kinetic regularities and specific features of phase formation in a BaCO3-PbO-Nb2O5 system are determined. Solid-phase synthesis of binary niobates is accomplished. Isomorphous capacity (phase boundaries) is established for solid solutions of various structural types. All specimens are certified by the method of X-ray diffraction analysis. The resistance of synthesized niobates to acid media is studied. Electrical properties of lead-bearing niobates are investigated and composition-structure-property relationship are analyzed. With consideration for phase equilibria, chemical stability, electrical properties the most promising structural types and compositions are selected to be tested as ion-active materials

Abstract (Russian)

Установлены кинетические закономерности и особенности фазообразования в системе BaCO3-PbO-Nb2O5. Осуществлен твердофазный синтез двойных ниобатов. Оценена изоморфная емкость (границы областей существования) для твердых растворов различных структурных типов. Все образцы аттестованы рентгенографическим методом. Изучена устойчивость синтезированных ниобатов к действию кислых сред. Исследованы электротранспортные свойства свинецсодержащих ниобатов и проанализирована взаимосвязь состав-структура-свойства. С учетом фазовых равновесий, химической устойчивости, электрических свойств выделены наиболее перспективные структурные типы и составы для испытания в качестве ионоактивных материалов

Additional details

Additional titles

Original title (Russian)
Синтез и свойства фаз системы BaCO

Publishing Information

Journal Title
Neorganicheskie Materialy
Journal Volume
40
Journal Issue
4
Journal Page Range
p. 486-490
ISSN
0002-337X
CODEN
NEOMB8

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36079568
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BARIUM CARBONATES; CONCENTRATION RATIO; ELECTRIC CONDUCTIVITY; LEAD OXIDES; NIOBATES; PHASE STUDIES; SINTERED MATERIALS; SOLID SOLUTIONS; SYNTHESIS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 1000-4000 K
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATES; CHALCOGENIDES; DISPERSIONS; ELECTRICAL PROPERTIES; HOMOGENEOUS MIXTURES; LEAD COMPOUNDS; MATERIALS; MIXTURES; NIOBIUM COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SOLUTIONS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS

Optional Information

Notes
10 refs., 3 figs., 5 tabs.