Fine and dense silicon nitride-based ceramics were produced and characterized. Substantial increase in sinterability and refinement of the microstructure (mean grain size < 0.2 μm) were reached by the addition of ultrafine Si/C/N powders to commercial Si3N4 submicronic powder. Moreover this ultrafine powder was densified. The effects of different amounts of sintering aids (La2O3+Y2O3) and of powder treatment methods on microstructure and mechanical properties were evaluated and compared.
Development and characterization of nanophase Si3N4-based ceramics
Bellosi A.;Monteverde F.
Primo
Writing – Original Draft Preparation
;
1997
Abstract
Fine and dense silicon nitride-based ceramics were produced and characterized. Substantial increase in sinterability and refinement of the microstructure (mean grain size < 0.2 μm) were reached by the addition of ultrafine Si/C/N powders to commercial Si3N4 submicronic powder. Moreover this ultrafine powder was densified. The effects of different amounts of sintering aids (La2O3+Y2O3) and of powder treatment methods on microstructure and mechanical properties were evaluated and compared.File in questo prodotto:
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