Indium Oxide Ceramics with Titania Additions

The sintering behaviour and electrical conductivity of In2O3 and SnO2-In2O3 (ITO) ceramics doped with MgO, Fe2O3, SiO2, ZrO2, and TiO2 (0, 1 to 2 wt% as oxide) were studied. For In2O3, TiO2 and Fe2O3 additions significantly enhance densification. It is shown that TiO2 improves the densification rate...

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Bibliographic Details
Published in:Key engineering materials 1997-04, Vol.132-136, p.928-931
Main Authors: Boch, Philippe, Nadaud, N.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Miscellaneous
Technical ceramics
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Summary:The sintering behaviour and electrical conductivity of In2O3 and SnO2-In2O3 (ITO) ceramics doped with MgO, Fe2O3, SiO2, ZrO2, and TiO2 (0, 1 to 2 wt% as oxide) were studied. For In2O3, TiO2 and Fe2O3 additions significantly enhance densification. It is shown that TiO2 improves the densification rate, decreases the normal grain growth and inhibits the abnormal grain growth during the final stage of sintering. All the additives degrade the electrical conductivity to some extent, except for TiO2. This is partly related to an increase in the free-carrier concentration due to the donor effect of soluble titanium in In2O3. 12 refs.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.132-136.928