Influence of Temperature on Phase Composition of Nitridation Products from Rutile and Fly Ash

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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.

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Periodical:

Edited by:

Yiwang Bao, Danyu Jiang, Li Tian and Jianghong Gong

Pages:

476-479

DOI:

10.4028/www.scientific.net/KEM.492.476

Citation:

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

Online since:

September 2011

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$35.00

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