Paper Title:
Synthesis of Silicon Carbide Powders from Iron Tailings
  Abstract

Silicon carbide powders were prepared by the carbothermal reduction method. The starting powders used were iron tailings and graphite. The XRD results showed that the main crystal phase was SiC and the main impurity was FexSiy in as-fabricated silicon carbide. The SEM results revealed that the grains of SiC-phase in as-fabricated silicon carbide were flaky-like or globular-like. It is found that the carbon addition and the reaction temperature play a key role to obtain SiC-phase, while the holding time and argon flow rate had a little effect on the yield of SiC as the excessive carbon addition are used. The optimum sintering temperature, holding time, argon flowing rate, the ratio of n(C): n(SiO2) are 1500 °C, 8 h, 0.6 L/min, 5:1, respectively.

  Info
Periodical
Materials Science Forum (Volumes 620-622)
Edited by
Hyungsun Kim, JienFeng Yang, Tohru Sekino and Soo Wohn Lee
Pages
237-240
DOI
10.4028/www.scientific.net/MSF.620-622.237
Citation
X. M. Zhang, L. H. Xu, H. S. Hao, J. Y. Yang, F. He, "Synthesis of Silicon Carbide Powders from Iron Tailings", Materials Science Forum, Vols. 620-622, pp. 237-240, 2009
Online since
April 2009
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Price
$32.00
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