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О. Н. Кайдаш
«Свободное спекание и свойства нанодисперсной системы Si3N4–Y2O3–Al2O3»
895–902 (2011)

PACS numbers: 62.20.Qp, 62.23.Pq, 81.05.Je, 81.07.Bc, 81.07.Wx, 81.20.Ev, 81.40.Np

The results of investigation of the pressureless sintering, microstructure and properties of high-density Si3N4-based ma-terials fabricated from nanodispersed Si3N4–Al2O3–Y2O3 compo-site powders are reported. As shown, these self-reinforced ma-terials with low content of glass phase have a bending strength Rbm above 700 MPa and crack resistance K1с of 5.0 MPa?m1/2, and preliminary gas-thermal treatment of the initial powders in-creases strength owing to increasing the homogeneity of micro-structure and the quantity of anisometric Si3N4 grains in the material.