THE AUTOMATIC CRYSTALLIZATION OF MgO DURING THE SINTERING Si3N4-MgO-CeO2 CERAMICS

THE AUTOMATIC CRYSTALLIZATION OF MgO DURING THE SINTERING Si3N4-MgO-CeO2 CERAMICS

The automatic crystallization of MgO duringthe sintering of Si3N4-MgO-CeO2 is first discovered.ForSi3N4-MgO-CeO2,ceramics,the MgO-CeO2 would reactwith SiO2 to form liquid at 1450℃ and then transform intoglassy phase in the sintered bodies after cooling down.Above1550℃,MgO would crystallize automatic...

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Veröffentlicht in:武汉理工大学学报：材料科学英文版 1996-06 (2), p.52-57
1. Verfasser: 杨海涛 杨国涛 袁润章
Format: Artikel
Sprache:eng
Schlagworte:
crystal
glassy
lization
nitride
phase
silicon
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Zusammenfassung:The automatic crystallization of MgO duringthe sintering of Si3N4-MgO-CeO2 is first discovered.ForSi3N4-MgO-CeO2,ceramics,the MgO-CeO2 would reactwith SiO2 to form liquid at 1450℃ and then transform intoglassy phase in the sintered bodies after cooling down.Above1550℃,MgO would crystallize automatically during sinter-ing.So the glassy phase which is harmful to the high temper-ature properties is then eliminated.The present work is ofgreat value for theoretical study and application.
ISSN:1000-2413
1993-0437