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- W1527428900 abstract "Continuous silicon carbide (SiC) fiber-reinforced silicon carbide composite (SiC/SiC) is considered to be applied to the components for gas turbine, spacecraft parts and fusion nuclear reactors since it shows non-brittle fracture behavior, excellent high-temperature mechanical properties, good oxidation, corrosion and wear resistance, low activation and good resistance to high-energy neutron irradiation. Present authors have studied a fabrication process of SiC/SiC composite using hot-pressing which is a simple process compared to CVI and PIP methods and offers the ability to obtain dense composite [1-5]. Green sheets of SiC containing Al2O3- Y2O3-CaO sintering additives prepared by doctor-blade method and polycarbosilane-impregnated two-dimensionally plain-woven Hi-Nicalon cloth with BN-coating were stacked alternately, and followed by hot-pressing at 1650–1750 °C. The composites showed a relative density of 93-94 % and a bending strength of 150-240 MPa. Thermal conductivity of these composites was only 7-14 W/mK at room temperature, and was nearly the same or slightly higher than that of the composites fabricated by CVI and PIP methods [4]. One of the effective ways to increase thermal conductivity of SiC/SiC composites is improvement of thermal conductivity of the matrix. In this study, we tried to improve the thermal conductivity of the SiC matrix by the addition of coarse SiC grains, and mechanical and thermal properties of the SiC/SiC composite using this matrix were investigated at room temperature." @default.
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- W1527428900 date "2001-10-12" @default.
- W1527428900 modified "2023-10-17" @default.
- W1527428900 title "Mechanical and Thermal Properties of Hot-Pressed SiC/SiC Composites Using SiC Matrix Containing Coarse SiC Grains" @default.
- W1527428900 doi "https://doi.org/10.1002/3527605622.ch62" @default.
- W1527428900 hasPublicationYear "2001" @default.
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