Intermediate phases in Ti3SiC2 synthesis from Ti/SiC/C mixtures studied by time-resolved neutron diffraction
ED Wu, EH Kisi, DP Riley, RI Smith
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | AMER CERAMIC SOC | Published : 2002
The reactive sintering of 3Ti/SiC/C to form the layered ternary carbide Ti3SiC2 was studied in situ by time-resolved neutron powder diffraction. A number of intermediate processes occur during the synthesis beginning with the α-β transition in Ti. Concurrent with the α-β transition, two intermediate phases, TiCx and Ti5Si3Cx (x ≤ 1), form. These phases account for almost the entire sample in the range 1500-1600°C beyond which they react with each other and a small amount of free C to form the product phase Ti3SiC2.