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 Ti_2-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).

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/7493 must be provided.

1. Radio-crystallographic study of titanium sesquioxide at high temperature and in vacuum