Radiation tolerance of M(n+1)AX(n) phases, Ti3AlC2 and Ti3SiC2
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Date
2010-08-01
Journal Title
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Publisher
Elsevier
Abstract
During investigations of novel material types with uses in future nuclear technologies (ITER/DEMO and GenIV fission reactors), ternary carbides with compositions Ti3AlC2 and Ti3SiC2 have been irradiated with high Xe fluences, 6.25 × 1015 ions cm−2 (25–30 dpa), using the IVEM-TANDEM facility at Argonne National Laboratory. Both compositions show high tolerance to damage, and give indications that they are likely to remain crystalline to much higher fluences. There is a visible difference in tolerance between Ti3AlC2 and Ti3SiC2 that can be related to the changes in bonding within each material. These initial findings provide evidence for a novel class of materials (+200 compounds) with high radiation resistance, while, significantly, both of these materials are composed of low-Z elements and hence exhibit no long-term activation. © 2010, Elsevier Ltd.
Description
Keywords
Electron diffraction, Ceramics, Ion beams, Transmission electron microscopy, Titanium, Tolerance
Citation
Whittle, K. R., Blackford, M. G., Aughterson, R. D., Moricca, S., Lumpkin, G. R., Riley, D. P., & Saluzec, N. J. (2010). Radiation tolerance of M(n+1)AX(n) phases, Ti3AlC2 and Ti3SiC2. Acta Materialia, 58(13), 4362-4368. doi:10.1016/j.actamat.2010.04.029