Data di Pubblicazione:
2009
Citazione:
Thermal expansion and stability of Ti2SC in air and inert atmospheres / S.R. Kulkarni, M. Merlini, N. Phatak, S.K. Saxena, G. Artioli, S. Amini, M.W. Barsoum. - In: JOURNAL OF ALLOYS AND COMPOUNDS. - ISSN 0925-8388. - 469:1-2(2009), pp. 395-400.
Abstract:
The thermal expansion and stability of predominantly single-phase Ti2SC powders in argon and air was investigated by Rietveld analysis of synchrotron X-ray diffraction spectra. When the sample was heated in an Ar atmosphere, it started to dissociate into TiS2 (see footnote 1) at ≈400 °C. At 8.5 (5) × 10-6 °C-1 and 8.8 (2) × 10-6 °C-1 the thermal expansion coefficients along the a and c-directions, respectively, are quite similar. The volumetric thermal expansion is 25.2 (5) × 10-6 °C-1. When Ti2SC was heated in air, it started to oxidize, at 400 °C, first to anatase, which converts, at higher temperatures, to rutile. The sulfur and carbon atoms presumably diffuse outward and escape as gases.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
S.R. Kulkarni, M. Merlini, N. Phatak, S.K. Saxena, G. Artioli, S. Amini, M.W. Barsoum
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