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


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.


Inert Atmosphere Purification Process Decarburization Theoretical Density Pure Product 
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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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