uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Thermal stability of Ti3SiC2 thin films
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Inorganic Chemistry.
Show others and affiliations
2007 (English)In: Acta Materialia, ISSN 1359-6454, E-ISSN 1873-2453, Vol. 55, no 4, 1479-1488 p.Article in journal (Refereed) Published
Abstract [en]

The thermal stability of Ti3SiC2(0 0 0 1) thin films is studied by in situ X-ray diffraction analysis during vacuum furnace annealing in combination with X-ray photoelectron spectroscopy, transmission electron microscopy and scanning transmission electron microscopy with energy dispersive X-ray analysis. The films are found to be stable during annealing at temperatures up to 1000 °C for 25 h. Annealing at 1100–1200 °C results in the rapid decomposition of Ti3SiC2 by Si out-diffusion along the basal planes via domain boundaries to the free surface with subsequent evaporation. As a consequence, the material shrinks by the relaxation of the Ti3C2 slabs and, it is proposed, by an in-diffusion of O into the empty Si-mirror planes. The phase transformation process is followed by the detwinning of the as-relaxed Ti3C2 slabs into (1 1 1)-oriented TiC0.67 layers, which begin recrystallizing at 1300 °C. Ab initio calculations are provided supporting the presented decomposition mechanisms.

Place, publisher, year, edition, pages
2007. Vol. 55, no 4, 1479-1488 p.
Keyword [en]
Ti3SiC2 thin films, Phase transformations, X-ray diffraction, Transmission electron microscopy, Ab initio electron theory
National Category
Chemical Sciences
URN: urn:nbn:se:uu:diva-10518DOI: 10.1016/j.actamat.2006.10.010ISI: 000244548100033OAI: oai:DiVA.org:uu-10518DiVA: diva2:38286
Available from: 2007-03-29 Created: 2007-03-29 Last updated: 2011-02-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Wilhelmsson, OlaJansson, Ulf
By organisation
Inorganic Chemistry
In the same journal
Acta Materialia
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 437 hits
ReferencesLink to record
Permanent link

Direct link