Journal
MATERIALS LETTERS
Volume 57, Issue 1, Pages 72-76Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0167-577X(02)00701-2
Keywords
Ti2AlC ternary carbide; self-propagating high-temperature synthesis (SHS); pressure-assisted thermal explosion
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Ti2AlC ternary carbide was fabricated from 2Ti-Al-C powder blend employing thermal explosion (TE) mode of self-propagating high-temperature synthesis (SHS). The formation of Ti2AlC was found to occur during cooling from the high combustion temperature (>2000 degreesC) by a peritectic reaction between the earlier formed liquid Ti aluminides and a solid Ti carbide, TiC1-x. The application of a moderate 30-MPa pressure during TE at 800 degreesC yielded a near fully dense material containing, in addition to the Ti2AlC ternary phase, an appreciable amount of TiC1-x. (C) 2002 Elsevier Science B.V. All rights reserved.
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