Mechanical Properties of Si2N2O/SiC-Whisker Composites

The mechanical and thermal properties of Si2N2O/SiC‐whisker composites were studied with emphasis on the effect of matrix composition and of whisker content. The fracture toughness of Si2N2O was remarkably improved by 90% with a concomitant 70% strength improvement by addition of SiC whiskers of onl...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of the American Ceramic Society 1991-02, Vol.74 (2), p.296-300
Hauptverfasser: Lio, Satoshi, Yokoi, Hitoshi, Watanabe, Masakazu, Matsuo, Yasushi
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The mechanical and thermal properties of Si2N2O/SiC‐whisker composites were studied with emphasis on the effect of matrix composition and of whisker content. The fracture toughness of Si2N2O was remarkably improved by 90% with a concomitant 70% strength improvement by addition of SiC whiskers of only 10 vol%. Optimum mechanical and thermal properties of Si2N2O/SiC‐whisker composites were obtained at an equimolar ratio of Si3N4/SiO2, which is the stoichiometric composition for Si2N2O. Additional investigation concerning the Si2N2O‐matrix/SiC‐whisker interface by controlling sintering additives is necessary for further improvement of mechanical and thermal properties of Si2N2O/SiC‐whisker composites.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1991.tb06878.x