Compositions: ceramic – Ceramic compositions – Carbide or oxycarbide containing
Reexamination Certificate
2007-06-26
2007-06-26
Group, Karl (Department: 1755)
Compositions: ceramic
Ceramic compositions
Carbide or oxycarbide containing
C501S090000
Reexamination Certificate
active
10518646
ABSTRACT:
Silicon carbide matrix composite material (1) comprises silicon carbide matrix (2) as a host. The silicon carbide matrix (2) comprises first silicon carbide phase (3) of 0.1 to 10 μm average crystal grain diameter and second silicon carbide phase (4) of 0.01 to 2 μm average crystal grain diameter. In interstices of silicon carbide crystal grains constituting the silicon carbide matrix (2), liberated silicon phase (5) amounting to, for example, 5 to 50 mass % based on the composite material (1) is present continuously in network form. This fine structure enables realizing high strength and high toughness of the silicon carbide composite material (1).
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Kameda, Tsuneji et al. “Development of Continuous SiC Fiber-Reinforced Reaction Sintered SiC Matrix Composite”, Journal of the Ceramic Society of Japan, vol. 107, No. 4, pp. 327-334, with English abstract, 1999.
Itoh Yoshiyasu
Kameda Tsuneji
Suyama Shoko
Group Karl
Kabushiki Kaisha Toshiba
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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