Journal article
On the oxidation of Ti2GeC in air
Journal of alloys and compounds, v 580, pp 550-557
15 Dec 2013
Abstract
Herein we report on the oxidation of bulk Ti2GeC in air in the 600 degrees C to 800 degrees C temperature range. At 600 degrees C, and up to 500 h, the oxidation kinetics are sub-parabolic and the rutile TiO2 layer formed is adherent and protective. At 700 degrees C and 800 degrees C the kinetics are parabolic up to 100 h before becoming linear. X-ray diffraction confirmed the presence of two rutile structures, TiO2 and GeO2, and a hexagonal GeO2 on the oxidized surfaces. The oxidation occurs by inward diffusion of oxygen through a rutile (Ti1-xGex)O-2 solid solution with x <= 0.07. Additionally, and throughout the entire temperature range studied, an oxygen-induced decomposition - occurring predominantly at the oxide/carbide interface - results in the formation of an elemental Ge-rich phase. If the rutile layer is not protective, the latter oxidizes into hexagonal GeO2. (c) 2013 Elsevier B.V. All rights reserved.
Metrics
Details
- Title
- On the oxidation of Ti2GeC in air
- Creators
- Babak Anasori - Drexel UniversityEl'ad N. Caspi - Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USAYasmine Elraheb - Drexel UniversityMichel W. Barsoum - Drexel UniversityElad N Caspi - Materials Science and Engineering
- Publication Details
- Journal of alloys and compounds, v 580, pp 550-557
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- W911NF-11-1-0525 / Army Research Office
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000324525800087
- Scopus ID
- 2-s2.0-84884270669
- Other Identifier
- 991019167922504721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering