Effect of MWO4 (M = Ca, Sr, Ba) Dispersion on the Interfacial Processes in (+/-)WO3 vertical bar MWO4 vertical bar WO3(-/+) Cells and Transport Properties of Metacomposite Phases / Pestereva N. N.,Safonova I. G.,Nokhrin S. S.,Neiman A. Ya. // RUSSIAN JOURNAL OF INORGANIC CHEMISTRY. - 2010. - V. 55, l. 6. - P. 876-882.

ISSN/EISSN:

0036-0236 / 1531-8613

Type:

Article

Abstract:

We compare data on the reciprocal electrosurface transfer (EST) of WO3 and MWO4 components through WO3 vertical bar MWO4 eutectic heterointerfaces using MWO4 (M = Ca, Sr, Ba) samples prepared by standard ceramic technology (CER) and nitrate-organic technology (N/O); these samples considerably differ in both the grain size of precursor powders and the grain size of sintered ceramics. When an electric field is applied, the interpenetration of WO3 and MWO4 components occurs though WO3 vertical bar MWO4 (M = Ca, Sr, Ba) heterointerfaces. The general (-)WO3 <-> MWO4(+) intermigration pattern in the cells is not influenced by tungstate preparation technology. However, interpenetration rates are far greater for MWO4N/O. The transport properties of \{MWO4 center dot xWO(3)\} two-phase eutectic metacomposites manufactured by both technologies were studied. Tungstate and composite manufacturing technologies have no radical influence on the electric properties (overall and partial conductivity, transference numbers) of the samples, only changing conductivity versus concentration relationships. Our data well fit the model of formation of a nonautonomous electrolytic interphase.

Author keywords:

HETEROPHASE INTERFACES; WO3; SURFACE; DIFFUSION; MIGRATION; SYSTEMS

DOI:

10.1134/S0036023610060082

Web of Science ID:

ISI:000279689000008

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1531-8613
Keywords-Plus	HETEROPHASE INTERFACES; WO3; SURFACE; DIFFUSION; MIGRATION; SYSTEMS
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear
Author-Email	Arkady.neiman@usu.ru
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation; Russian Foundation for Basic Research {[}08-03-00144-a, 04-03-32614-a]
Funding-Text	This work was supported by grants of the Ministry of Education and Science of the Russian Federation and by the Russian Foundation for Basic Research (project nos. 08-03-00144-a and 04-03-32614-a). The authors are grateful to E.V. Tsipis for performing grain-size analysis and A.A. Pankratov for SEM studies.
Number-of-Cited-References	13
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	12
Journal-ISO	Russ. J. Inorg. Chem.
Doc-Delivery-Number	622TQ