PREPARATION OF TUNGSTEN CARBIDES ON SILICA-EVIDENCE OF COUPLING EFFECTS DURING REDUCTION CARBURIZATION OF TUNGSTEN-OXIDE

Authors
COLQUE S GRANGE P DELMON B
Citation
S. Colque et al., PREPARATION OF TUNGSTEN CARBIDES ON SILICA-EVIDENCE OF COUPLING EFFECTS DURING REDUCTION CARBURIZATION OF TUNGSTEN-OXIDE, Solid state ionics, 63-5, 1993, pp. 122-127
Citations number
22
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical
Journal title
Solid state ionics → ACNP
ISSN journal
01672738
Volume
63-5
Year of publication
1993
Pages
122 - 127
Database
ISI
SICI code
0167-2738(1993)63-5:<122:POTCOS>2.0.ZU;2-9
Abstract
The preparation of highly dispersed carbide phases using WO3/SiO2 as a precursor is strongly influenced by the morphology of the solids. W2C is the only phase formed if WO3 is in strong interaction with silica, otherwise WC is also present. Coupling effects during reduction/carbu rization of tungsten oxide are observed.