One-step synthesis and densification of Ti-Al-C-based cermets by ETEPC

One-step synthesis and densification of Ti-Al-C-based cermets by ETEPC

The Electro-Thermal Explosion under Pressure with Confinement (ETEPC) mode of SHS has been studied for producing possibly low-porosity Ti 2 AlC and Ti 3 AlC 2 from elemental powders in a very short processing time. The effect of maintaining the electric current after the ignition of exothermic react...

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Veröffentlicht in:International journal of self-propagating high-temperature synthesis 2009-12, Vol.18 (4), p.263-266
Hauptverfasser: Hendaoui, A., Vrel, D., Amara, A., Fagnon, N., Langlois, P., Guérioune, M.
Format: Artikel
Sprache:eng
Schlagworte:
Chemical Sciences
Chemistry and Materials Science
Materials Science
Physics
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Zusammenfassung:The Electro-Thermal Explosion under Pressure with Confinement (ETEPC) mode of SHS has been studied for producing possibly low-porosity Ti 2 AlC and Ti 3 AlC 2 from elemental powders in a very short processing time. The effect of maintaining the electric current after the ignition of exothermic reaction has also been studied. A better achievement of the desired reaction, with a total yield of MAX phases up to 73%, was obtained with maintaining the electric current for 4 s after ignition of the exothermic reaction in the Ti: Al: C = 2:1:1 composition. XRD studies revealed also composition gradients.
ISSN:1061-3862
1934-788X
DOI:10.3103/S1061386209040050