Abstract
Mechanical properties and microstructures of machinable silicon carbide, fabricated by pressureless sintering of silicon carbide fine powder with the aid of polysilastyrene, have been examined. Drastic changes in microstrucyure and in mechanical properties between specimens sintered at below 1773 K and at above 1873 K were observed. By sintering at above 1883 K the macinable silicon carbide had a good strength of more than 200 Mpa with high reliability, which was maintained beyond 1773 K. Polysilastyrene was converted in β-phase silicon carbide and ribbon carbon in the pores. The (001) plane of carbon is parallel to the (111) planes of β-phase silicon carbide.
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Suganuma, K., Sasaki, G., Fujita, T. et al. Mechanical properties and microstructures of machinable silicon carbide. J Mater Sci 28, 1175–1181 (1993). https://doi.org/10.1007/BF01191949
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DOI: https://doi.org/10.1007/BF01191949