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Radio Crystallographic Study of Titanium Sesquioxyde at High Temperature and in Vacuum

Afir Arezki 

Université des sciences Houari Boumedienne (U.S.T.H.B), Bp N°9 El AliA Bab Ezzouar, Alger 16141, Algeria

Abstract

High-temperature X-ray diffractometry is used to study Ti2O3 rhombohedral oxide formed by reduction of titanium dioxide, under vacuum and in the presence of graphite or metallic titanium.The sesquioxide is characterised by a homogeneous field of very low oxygen pressure, both boundary phases appearing independently from one another between 1073K and 1988K. The c/a = 2.660 value for Ti2-xO3 oxidized form of the equivalent hexagonal cell reaches c/a = 2.735 for Ti2O3 reduced form, which does not undergo quenching (c/a = 2.640 at 293K).

 

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Related papers

Presentation: poster at 18th Conference on Physical Organic Chemistry, Posters, by Afir Arezki
See On-line Journal of 18th Conference on Physical Organic Chemistry

Submitted: 2006-05-07 08:27
Revised:   2009-06-07 00:44