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- W3140654706 abstract "Al2O3-TiC-ZrO2 nanocomposites were fabricated by combustion synthesis-hot pressing with the cheap reactants of TiO2, Al, C and ZrO2. The effects of ZrO2 nano-additives on the mechanical properties and microstructure of Al2O3-TiC ceramic-matrix composites were discussed. With the addition of ZrO2 nanoparticles, the dominant fracture mode of the composites changed from inter-granular fracture into transgranular fracture. ZrO2 nanoparticles dispersed mainly in Al2 O3 matrix. The residual stresses generated by the thermal expansion coefficient mismatch between ZrO2 particles and Al2O3 matrix induced dislocation and microcracks around the nanoparticles. And the effects of nanoparticles on the deflected propagation, nailing and blocking of the dislocation are remarkable and can be used to explain the improvement of the strength and toughness of Al2O3-TiC-ZrO2 composite. Al2O3-TiC-10ZrO2 composite exhibits good mechanical properties with the flexural strength of 706 MPa, the fracture toughness of 6.3 MPa.m1/2 and the HRA hardness values of 94.4, respectively." @default.
- W3140654706 created "2021-04-13" @default.
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- W3140654706 date "2001-01-01" @default.
- W3140654706 modified "2023-09-28" @default.
- W3140654706 title "MECHANICAL PROPERTIES AND MICROSTRUCTURE OF Al_2O_3-TiC-ZrO_2 NANOCOMPOSITES PREPARED BY COMBUSTION SYNTHESIS-HOT PRESSING" @default.
- W3140654706 hasPublicationYear "2001" @default.
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