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Journal of Materials Science

, Volume 36, Issue 4, pp 995–999 | Cite as

β-SiC production by reacting silica gel with hydrocarbon gas

  • Rasit Koc
  • Gregory Glatzmaier
  • Jack Sibold
Article

Abstract

A novel synthesis process, developed for producing high purity, submicron, non-agglomerated and low cost β-SiC powders. The process is based on carbothermal reduction reaction of a novel coated precursor. The precursor is derived from a silica gel and a hydrocarbon gas and provides high contact area between reactants. This yields a better distribution of carbon within the silica gel and results in a more complete reaction and a purer product. The powders produced in this process have a low oxygen content (less than 0.8 wt.%), very fine particle size (0.1–0.3 μm), narrow particle size distribution, non-agglomerated and are low cost. The sintering tests demonstrated that these powders can be pressureless-sintered to near theoretical density at about 2100°C in an inert atmosphere. No decarburization and no acid purification process was required before sintering.

Keywords

Inert Atmosphere Purification Process Decarburization Theoretical Density Pure Product 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    G. Glatzmaier and R. Koc, US Patent no. 5,324,494 (1994).Google Scholar

Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Rasit Koc
    • 1
  • Gregory Glatzmaier
    • 2
  • Jack Sibold
    • 3
  1. 1.Southern Illinois University at Carbondale Department of Mechanical Engineering and Energy ProcessesCarbondaleUSA
  2. 2.National Renewable Energy LaboratoryGoldenUSA
  3. 3.TDA Research, Inc.Wheat RidgeUSA

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