Electrosurface transfer of WO3 into CaWO4 ceramics

Arkady Neiman; Elena Konisheva

doi:10.1016/s0167-2738(98)00094-0

Electrosurface transfer of WO₃ into CaWO₄ ceramics

Arkady Neiman, Elena Konisheva

Research output: Journal Publication › Article › peer-review

21 Citations (Scopus)

Abstract

A new transport phenomenon - stimulated by electric field drawing-in of a solid oxide into the inner surface of an oxide ceramic support - has been studied on the example of the WO₃ (flow phase)/CaWO₄ (support ceramic) system. This phenomenon is a property, which is inherent in the CaWO₄ ceramic whatever its prehistory. The transfer rate has been analyzed as a function of time, temperature, ceramics porosity, and the charge passed. The atomic ratio W/Ca ≈ 2 for the initial CaWO₄ support and the formed (CaWO₄/WO₃)-composite was found by ESCA. The possible models of the phenomenon have been discussed.

Original language	English
Pages (from-to)	121-129
Number of pages	9
Journal	Solid State Ionics
Volume	110
Issue number	1-2
DOIs	https://doi.org/10.1016/s0167-2738(98)00094-0
Publication status	Published - 1 Jul 1998
Externally published	Yes

Keywords

Carry-away factor
Electrosurface phenomena in solids
Solid oxide flow

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

Access to Document

10.1016/s0167-2738(98)00094-0

Cite this

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title = "Electrosurface transfer of WO3 into CaWO4 ceramics",

abstract = "A new transport phenomenon - stimulated by electric field drawing-in of a solid oxide into the inner surface of an oxide ceramic support - has been studied on the example of the WO3 (flow phase)/CaWO4 (support ceramic) system. This phenomenon is a property, which is inherent in the CaWO4 ceramic whatever its prehistory. The transfer rate has been analyzed as a function of time, temperature, ceramics porosity, and the charge passed. The atomic ratio W/Ca ≈ 2 for the initial CaWO4 support and the formed (CaWO4/WO3)-composite was found by ESCA. The possible models of the phenomenon have been discussed.",

keywords = "Carry-away factor, Electrosurface phenomena in solids, Solid oxide flow",

author = "Arkady Neiman and Elena Konisheva",

note = "Funding Information: This study was supported by the Russian Foundation for Basic Research (grants 95-03-08997 and 98-03-32606) and by a grant from the Russian Federation Ministry for General and Professional Education. The authors wish to thank Professor Yu. Kostikov for the ESCA measurements and interpretation, Doctor D. Bronin for numerous fruitful discussions, and Professor Ilan Riess for his friendly support.",

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AU - Konisheva, Elena

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AB - A new transport phenomenon - stimulated by electric field drawing-in of a solid oxide into the inner surface of an oxide ceramic support - has been studied on the example of the WO3 (flow phase)/CaWO4 (support ceramic) system. This phenomenon is a property, which is inherent in the CaWO4 ceramic whatever its prehistory. The transfer rate has been analyzed as a function of time, temperature, ceramics porosity, and the charge passed. The atomic ratio W/Ca ≈ 2 for the initial CaWO4 support and the formed (CaWO4/WO3)-composite was found by ESCA. The possible models of the phenomenon have been discussed.

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