Combustion synthesis of alpha -Si sub(3)N sub(4)-(MgO, Y sub(2)O sub(3)) composites

Combustion synthesis of alpha -Si sub(3)N sub(4)-(MgO, Y sub(2)O sub(3)) composites

The possibility of obtaining composite powders of alpha -Si sub(3)N sub(4)-Y sub(2)O sub(3) and alpha -Si sub(3)N sub(4)-MgO by self-propagating high-temperature synthesis (SHS) is studied. It is established that the alpha arrow right beta phase transformation starts at temperatures lower than the m...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Powder metallurgy and metal ceramics 2007-01, Vol.46 (1-2), p.8-11
Hauptverfasser: Zakorzhevskii, V V, Borovinskaya, I P, Chevykalova, LA, Kelina, IYa
Format: Artikel
Sprache:eng
Schlagworte:
Cermets
Combustion synthesis
Eutectics
Hot pressing
Phase transformations
Powder metallurgy
Self-propagating synthesis
Yttrium oxide
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The possibility of obtaining composite powders of alpha -Si sub(3)N sub(4)-Y sub(2)O sub(3) and alpha -Si sub(3)N sub(4)-MgO by self-propagating high-temperature synthesis (SHS) is studied. It is established that the alpha arrow right beta phase transformation starts at temperatures lower than the melting points of the corresponding eutectics. Metastable composite powders based on alpha -Si sub(3)N sub(4) with a high rate of phase transition are obtained. The composite powders ( alpha -Si sub(3)N sub(4)-Y sub(2)O sub(3), alpha -Si sub(3)N sub(4)-MgO) are used in hot pressing technology.
ISSN:1068-1302
1573-9066
DOI:10.1007/s11106-007-0002-z