MICROWAVE SINTERING OF Si_3N_4 CERAMICS
Si_3N_4陶瓷的微波烧结

The Si_3N_4 ceramics(91wt-% Si_3N_4+5wt-% Y_2O_3+4wt-% Al_20_3)of room tem-perature strength 620-760 MPa and fracture toughness 7MPa·m~(1/2)were prepared bymicrowave sintering and their phase composition,microstructure and mechanical propertieswere studie