Transport processes and surface transformation at the CaWO4 vertical bar WO3 interface / Konisheva E,Neiman A,Gorbunova E // SOLID STATE IONICS. - 2003. - V. 157, l. 1-4. - P. 45-49.

ISSN/EISSN:

0167-2738 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The effect of WO3 activity (a(WO3)) in the surrounding gas phase on spontaneous processes at the CaWO4\textbackslash{}WO3 interface was examined in experiments performed in a chamber open to the ambient air (i) and in a closed chamber (ii), where the samples were brought to an equilibrium with the WO3 vapor. The processes in both types of the chambers exhibited a bilateral behavior: spreading of WO3 into the CaWO4 ceramic and, simultaneously, penetration of CaWO4 components into the WO3 ceramic. The mass of the CaWO4 pellets was found to change to a significantly different degree. The conductivity of the CaWO4 ceramic increased with growing a WO3. The obtained results were discussed using a model of formation of the CW-s intermediate surface phase. When a(WO3) increased, the CW-s film became thicker and the degree of the film continuity was enhanced. (C) 2002 Elsevier Science B.V. All rights reserved.

Author keywords:

surface phenomena in solids; dispersion and spreading of solid oxides; conductivity; effect of alpha(WO3); chemical compounds; CaWO4; WO3 ELECTROSURFACE TRANSFER; WO3

DOI:

10.1016/S0167-2738(02)00188-1

Web of Science ID:

ISI:000181439500007

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	FEB
Note	6th International Symposium on Systems with Fast Ionic Transport (ISSFIT), KRAKOW, POLAND, MAY 09-12, 2001
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Article-Number	PII S0167-2738(02)00188-1
Keywords-Plus	ELECTROSURFACE TRANSFER; WO3
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Condensed Matter
Number-of-Cited-References	8
Usage-Count-Since-2013	5
Journal-ISO	Solid State Ion.
Doc-Delivery-Number	653MD