Ti3SiC2 MAX Phase From TiC-Si-Ti Mixture

Year 2018, Volume: 2 - Special Issue - International Conference on Science and Technology (ICONST 2018), 25 - 31, 31.12.2018

Ahmet Atasoy , Emre Saka

https://doi.org/10.30516/bilgesci.490925

Cited By: 1

Abstract

There are more than ten MAX phase systems and more
than fifty MAX phases. This work is focused to produce Ti₃SiC₂
MAX phase using Si, C, TiC powders. On the DTA curve of the mixture showed two
exothermic peaks at temperature 970 and 1250 ˚C which were related with the
formation of the MAX structure on the carbide layer. TiSi, SiC, TiC and Ti₃SiC₂
phases were detected in the sintered samples at temperature above 1300 ˚C for 3
h sintering time. At higher temperature and longer reaction time, SiC
decomposes depending on the holding and reaction temperature. The silicon to
titanium carbide and carbon ratios should be in stoichiometric but the silicon
content of the starting composition requires more than 20% excess.

Keywords

TiC, silicon, carbide, machinable ceramic

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