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On the interactions of Ti2AlC, Ti3AlC2, Ti3SiC2 and Cr2AlC with palladium at 900 degrees C
Journal article   Open access   Peer reviewed

On the interactions of Ti2AlC, Ti3AlC2, Ti3SiC2 and Cr2AlC with palladium at 900 degrees C

G. W. Bentzel, M. Sokol, J. Griggs, A. C. Lang and M. W. Barsoum
Journal of alloys and compounds, v 771, pp 1103-1110
15 Jan 2019
DOI: https://doi.org/10.1016/j.jallcom.2018.08.127
url
http://arxiv.org/abs/1811.00098View
SubmittedOpen Access (License Unspecified),  Open

Abstract

Chemistry Chemistry, Physical Materials Science Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physical Sciences Science & Technology Technology
Herein we report on the reactivity between palladium, Pd, and the MAX phases, Ti2AlC, Ti3AlC2, Ti3SiC2 and Cr2AlC. Diffusion couples of Pd/MAX were heated to 900 degrees C under uniaxial stress of similar to 20 MPa for 2, 4, and 10 h in a vacuum (< 1 Pa) hot press. The diffusion couples were examined using X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy. After heating to 900 degrees C for 10 h, the diffusion layer thicknesses in the Ti2AlC/Pd, Cr2AlC/Pd, Ti3AlC2/Pd and Ti3SiC2/Pd couples were found to be 35, 45, 105 and 410 mm, respectively. Thus, Ti2AlC is the most resistant to reaction, while Ti3SiC2 is least resistant, with Cr2AlC and Ti3AlC2, in between. In all cases, the reaction occurred by the diffusion of the A-group element into Pd, concomitant with Pd diffusion into the MAX phase. No diffusion of the M and X atoms was detected. (C) 2018 Published by Elsevier B.V.

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Chemistry, Physical
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
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