Paper Title:
Influence of Raw Materials on the Carbothermal Synthesis of Single-Phase Aluminum Oxynitride Powder
  Abstract

Aluminum oxynitride powders were synthesized by carbothermal reduction, using nano-sized alpha-alumina, gamma-alumina and carbon as raw materials. Effects of the weight percentages of alpha-alumina in alumina (R) and synthesizing temperatures (T) on the preparation of single-phase AlON powders have been studied. The results showed that proper R can reduce the shrinkage and increase the formation rate of AlON phase, but a high R will reduce the formation rate of AlON phase, because the activity of alpha-alumina was lower than that of gamma-alumina. Single-phase AlON powder with excellent properties can be obtained under the condition of R=0.15, T=1700°C. Moreover, this single-phase AlON powder was well-dispersed with an average size of about 2 μm.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
438-440
DOI
10.4028/www.scientific.net/KEM.368-372.438
Citation
H. P. Wang, D. X. Wu, W. Pang, J. Q. Qi, J. C. Zhou, J. S. Wen, Z. M. Cheng, Y. Wen, Z. J. Liao, T. C. Lu, "Influence of Raw Materials on the Carbothermal Synthesis of Single-Phase Aluminum Oxynitride Powder", Key Engineering Materials, Vols. 368-372, pp. 438-440, 2008
Online since
February 2008
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$32.00
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