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- W2006886887 abstract "Self-reinforced in situ Si3N4 composite material was prepared with high amount of La2O3 and Y2O3 additives by two-step hot pressing, and the optimum amount of additives was determined. The volume fraction of boundary glass phase was calculated based on the equilibrium of equivalent number in chemical reaction. For material with 15 mol% additives, flexural strength and fracture toughness at room temperature were 960 MPa and 12.3 MPa m1/2, respectively. At temperature of 1350°C, flexural strength was maintained to 720 MPa and fracture toughness was significantly increased to 23.9 MPa m1/2 because of the high refractory of oxynitride glass containing compositions of La and Y. Self-reinforced mechanism was mainly responsible for crack deflection along the elongated β-Si3N4 grains." @default.
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- W2006886887 date "1999-08-01" @default.
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- W2006886887 title "Preparation and mechanical properties of self-reinforced in situ Si3N4 composite with La2O3 and Y2O3 additives" @default.
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- W2006886887 doi "https://doi.org/10.1016/s1359-835x(99)00013-5" @default.
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