Herein, we report on the thermal expansion and stability of V 2AlC in the 25°-950°C temperature range. The sample was heated in an Argon atmosphere in a quartz capillary and the thermal expansion was measured using a X-ray synchrotron radiation source. Up to the maximum temperature explored, there were no signs of decomposition or phase transitions. The temperature variation of volumetric thermal expansion is given by αv=2.53(5) × 10-5+5.75(3) × 10 -9T °C-1. At ≈9.40 × 10-6 °C-1, the thermal expansions along both the a and c lattice directions are quite comparable; in other words, there is little thermal expansion anisotropy in V2AlC.

High-temperature thermal expansion and stability of V2AlC up to 950 degrees C / S. R. Kulkarni, M. Merlini, N. Phatak, S. K. Saxena, G. Artioli, S. Gupta, M. W. Barsoum. - In: JOURNAL OF THE AMERICAN CERAMIC SOCIETY. - ISSN 0002-7820. - 90:9(2007), pp. 3013-3016.

High-temperature thermal expansion and stability of V2AlC up to 950 degrees C

M. Merlini
Secondo
;
G. Artioli;
2007

Abstract

Herein, we report on the thermal expansion and stability of V 2AlC in the 25°-950°C temperature range. The sample was heated in an Argon atmosphere in a quartz capillary and the thermal expansion was measured using a X-ray synchrotron radiation source. Up to the maximum temperature explored, there were no signs of decomposition or phase transitions. The temperature variation of volumetric thermal expansion is given by αv=2.53(5) × 10-5+5.75(3) × 10 -9T °C-1. At ≈9.40 × 10-6 °C-1, the thermal expansions along both the a and c lattice directions are quite comparable; in other words, there is little thermal expansion anisotropy in V2AlC.
Settore GEO/06 - Mineralogia
2007
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/144894
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