Low-Pressure Preheating Combustion Synthesis of Silicon Nitride


Article Preview

Silicon nitride was prepared by means of low-pressure preheating combustion synthesis in this paper. When N2 pressure is less than or equal to 2MPa, the lowest preheating temperature is about 653K, reactant could make silicon nitride by combustion synthesis. The additive of ammonium fluoride and ammonium chloride, as the reactive diluent, and Si react and make some useful intermediate products to α -Si3N4 after thermal decomposition. The reactive diluent content must be appropriate. At the same time, with the improvement of Si3N4, as the inert diluent, content in reactant, the adiabatic flame temperature of system would reduce, and combustion reaction rate of Si also drops, so it is propitious to make high level of α -Si3N4.



Advanced Materials Research (Volumes 26-28)

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




K. Zhang et al., "Low-Pressure Preheating Combustion Synthesis of Silicon Nitride", Advanced Materials Research, Vols. 26-28, pp. 441-444, 2007

Online since:

October 2007




[1] Harie D, Jack K H, Crystal Structures of Silicon Nitride. Nature (London), 1957, 180: 332-333.

[2] Riley F L. Silicon Nitride and Related Materials. J. Am. Ceram. Soc. ,2000,83 (2) :245~265.

[3] Yin S. Combustion synthesis. Beijing, Metallurgical Industry publishing company, 1999(in Chinese).

[4] Krius F E. Particle formation path in the synthesis of silicon nitride powder in a laser-heat aerosol reactor,J. Eur. Ceram. Soc. ,1998,18:1025~1036.

[5] Yamada T. Preparatin and evaluation of sinterable silicon nitride powder by imide decomposition method. Am. Ceram. Soc. Bull. ,1993, 72(5):99~106.

[6] Yao-Dian Liu. Fluidized-bed nitridation of fine silicone powder. Pqwder Technology,1999(106) :160~167.

DOI: https://doi.org/10.1016/s0032-5910(99)00072-8

[7] Merzhanov A G, Borovinskaya I P, Popov L S, et al. Method of preparing silicon nitride with a high alpha-phase content. United States Patent, 5, 032, 370, 1991. 7. 16.

[8] Wang F. Study on combustion synthesis of high quality silicon nitride and other nitride powders. Paper of Doctor degree,Beijing:University of Science and Technology Beijing,2005(in Chinese).

[9] Gazzara C P, Messier D P. Determination of phase contents in Si3N4 by X-ray diffraction analysis. Am. Ceram. Soc. Bull., 1977, 56(9): 777.

[10] Zhou H P. X-ray diffraction quantitative analysis of Si3N4. Journal of the Chinese Ceramic Society, 1980, 8(4):414~421(in Chinese).

[11] Cao Y G. Study on combustion synthesis of silicon nitride ceramics. Paper of Doctor degree, Beijing:University of Science and Technology Beijing,1998(in Chinese).

[12] Shen W P. Research on self-propagating high-temperature synthesis of silicon nitride powders with high α -phase content and silicon-based ceramics,Paper of Doctor degree,Beijing: University of Science and Technology Beijing,2005 (in Chinese).

[13] Zakorzhevskii V V, Borovinskaya I P. Some Regularities of α-Si3N4 Synthesis in a Commercial SHS Reacter. International Journal of Self-Propagating High-Temperature Synthesis, 2000, 9(2): 171-191.