Oxygen permeation in bismuth-based materials.: Part I:: Sintering and oxygen permeation fluxes

被引：44

作者：

Capoen, E

Steil, MC

Nowogrocki, G

Malys, M

Pirovano, C

Löfberg, A

Bordes-Richard, E

Bolvin, JC

Mairesse, G

Vannier, RN

机构：

[1] Univ Sci & Tech Lille Flandres Artois, ENSCL, CNRS, UMR 8012,Lab Cristallochim & Physicochim Solide, F-59652 Villeneuve Dascq, France

[2] ENSCL, USTL, CNRS, UMR 8010,Lab Catalyse Lille, F-59655 Villeneuve Dascq, France

来源：

SOLID STATE IONICS | 2006年 / 177卷 / 5-6期

关键词：

bismuth erbium oxide; bismuth calcium oxide; BIMEVOX; oxygen permeation;

D O I：

10.1016/j.ssi.2005.12.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Oxygen permeation measurements were performed on two layered bismuth based oxide ceramics: a rhombohedral phase belonging to the Bi2O3-CaO system. (Bi2O3)(0.73)-(CaO)(0.27) (BICAO) and a BICOVOX phase. Oxygen permeability for these systems was compared to permeability of the cubic fluorite type structure with composition (Bi2O3)(0.75)(Er2O3)(0).(25) (BE25). Low oxygen permeability was observed for the pure ceramic. As for BE25, permeability was considerably increased if 40 vol.% of silver was added to BICAO. In contrast, permeability was not improved by addition of gold to BICOVX. For this latter phase, the oxygen molecular exchange at the surface is clearly the limiting step in the oxygen transfer. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：483 / 488

页数：6

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