Influence of Temperature on Phase Composition of Nitridation Products from Rutile and Fly Ash
Rutile and fly ash powders were nitridized at different temperatures for 4 h. The influence of temperature on phase composition of nitridation products from rutile and fly ash was studied. XRD, SEM and EDS analyses show that: the phase compositions of the products was quite dependent on the reaction temperature. Mullite, O'-Sialon and X-Sialon were formed from 1400 °C to 1450 °C. Rising temperature would get Mullite nitrided. Meanwhile, O'-Sialon and X-Sialon would be nitrided and transformed into β-Sialon. At temperatures above 1550 °C, the main phases of the products were hexagonal columnar β-Sialon and irregular TiC0.3N0.7 grains.
Yiwang Bao, Danyu Jiang, Li Tian and Jianghong Gong
H. P. Ji et al., "Influence of Temperature on Phase Composition of Nitridation Products from Rutile and Fly Ash", Key Engineering Materials, Vol. 492, pp. 476-479, 2012