Reactions of Al/sub 2/O/sub 3/ with W and WO/sub 2/ at high temperatures in hydrogen and in vacuum

Journal Article · Thu Jan 01 04:00:00 EST 1976 · Inorg. Mater. (USSR) (Engl. Transl.); (United States)

OSTI ID:7156865

Levitskii, V A; Chentsov, V N; Kozlova, A F; Makagon, V V; Nevzorova, T D

The conditions of the reduction and oxidation of the components of the mixture Al/sub 2/O/sub 3/ + W by hydrogen with different moisture contents were investigated. It is shown that the primary reaction product is WO/sub 2/. The reaction of Al/sub 2/O/sub 3/ with WO/sub 2/ in vacuum takes place with formation of the compound AlWO/sub 4/ and evolution of free W. The structure of AlWO/sub 4/ has been established, and the possible reactions taking place in the system Al/sub 2/O/sub 3/ + W at high temperatures in hydrogen and in vacuum have been examined.

• Research Organization: Moscow State Univ.
• OSTI ID: 7156865
• Journal Information: Inorg. Mater. (USSR) (Engl. Transl.); (United States), Journal Name: Inorg. Mater. (USSR) (Engl. Transl.); (United States) Vol. 12:1; ISSN INOMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
HIGH VACUUM
HYDROGEN
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
REDOX REACTIONS
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
VERY HIGH TEMPERATURE