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- W2350583944 abstract "Nano sized Si C N powders mixed with Si 3N 4 ,Y 2O 3,La 2O 3 was hot press sintered to form the SiC/Si 3N 4 composites The microstructure of the composite was observed by means of SEM and HRTEM The results show that the toughness and three point bending strength of the composite at room temperature is higher than those of monolithic Si 3N 4 The fracture toughness at room temperature and 1350℃ is 11 78 MPa·m 1/2 and 14 69 MPa·m 1/2 respectively The bending strength at room temperature and 1350℃ is 934MPa and 696MPa respectively the pinning effect of the SiC micro crystal in Si 3N 4 grain and in grain boundary glass phase prevents the strength loss and increases the toughness of the composites at elevated temperature" @default.
- W2350583944 created "2016-06-24" @default.
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- W2350583944 date "2002-01-01" @default.
- W2350583944 modified "2023-09-25" @default.
- W2350583944 title "Microstructure and Mechanical Properties of Si_3N_4/Nano-sized Si-C-N Powders at Room and Elevated Temperature" @default.
- W2350583944 hasPublicationYear "2002" @default.
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