Paper Title:
Fine Spherical Tungsten Powder Prepared by Precipitation Reaction
  Abstract

The spherical tungsten powder was prepared by chemical reaction with ammonium tungstate and strong acids under ultrasonic and mechanical agitation. After precipitation reaction, the precipitate was dried and grinded, and then reduced into tungsten powder with hydrogen. The effects of acid kinds and dispersant on the fine tungsten powder were studied in this paper. The result shows that the acid kinds and its addition amount have great effect on the shape of tungsten particles. The tungsten powder with uniform particle size and spherical could be prepared by adding 17ml sulfric acid into 100ml ammonium tungstate. The tungsten particles can be finer and more dispersive, and have a spherical with addition of dispersant SDS (Sodium dodecyl sulfate). The particle size is about 1.5 micrometer.

  Info
Periodical
Chapter
Chapter 6: New Materials and Advanced Materials
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
967-970
DOI
10.4028/www.scientific.net/AMM.117-119.967
Citation
T. Lin, Y. J. Li, C. Y. Wu, Z. M. Guo, "Fine Spherical Tungsten Powder Prepared by Precipitation Reaction", Applied Mechanics and Materials, Vols. 117-119, pp. 967-970, 2012
Online since
October 2011
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Price
$32.00
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