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Densification of Si3N4 with LiYO2 Additive

โœ Scribed by Branko Matovic; Georg Rixecker; Fritz Aldinger


Book ID
109255864
Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
250 KB
Volume
87
Category
Article
ISSN
0002-7820

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Phase transformation, microstructure development and mechanical properties of 2.45 GHz microwavesintered silicon nitride (Si 3 N 4 ) with lithium yttrium oxide (LiYO 2 ) and zirconia (ZrO 2 ) sintering additives were investigated. It was found that a to b phase transformation completed at a lower te

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Dense Si 2 N 2 O was successfully synthesized using 2 mol% Li 2 O as an additive by a hot-pressing method at 1500 โ€ข C. Compared to other metal oxide additives, Li 2 O can significantly decrease the sintering temperature of Si 2 N 2 O, which is ascribed to the lower melting point of Li 2 O-SiO 2 and