Title: Desilicidation of the Ti3SiC2 MAX Phase in a CO and SiO Atmosphere.
Authors: Istomina, E. I.; Istomin, P. V.; Nadutkin, A. V.; Grass, V. E.
Abstract: We have studied the desilicidation of Ti3SiC2 MAX phase powder at 1600°C in a CO xSiO (x = 0, 1, 1.5, 2, 3) gas atmosphere. The required gaseous atmosphere was generated using granulated powder mixtures containing commercial carbon, TiO2, SiO2, and SiC, which released CO and SiO gases during heating as a result of oxide reduction reactions. Ti3SiC2 desilicidation was sensitive to the gas phase composition and occurred only if the CO : SiO ratio exceeded 1 : 3 (x 3SiC2 desilicidation process was shown to be reverse of TiC silicidation with SiO gas and could be described by the following chemical reaction scheme: Ti3SiC2 CO(g) = 3TiC SiO(g).
Subjects: ATMOSPHERE; TITANIUM dioxide; CHEMICAL reactions
Publication: Inorganic Materials, 2020, Vol 56, Issue 12, p1217
ISSN: 0020-1685
Publication type: Academic Journal
DOI: 10.1134/S0020168520120079

Desilicidation of the Ti3SiC2 MAX Phase in a CO and SiO Atmosphere.

Istomina, E. I.; Istomin, P. V.; Nadutkin, A. V.; Grass, V. E.