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Improvement of elongated α-SiAlON ceramics by variation of the processing conditions and amounts of additives

: Kurama, S.; Herrmann, Mathias; Mandal, Hasan


European Ceramic Society:
European Ceramic Society. Proceedings the 7th Conference and Exhibition. Part 2 : Brugge, Belgium, September 9 - 13, 2001, seventh ECerS
Uetikon-Zürich: Trans Tech Publications, 2002 (Key engineering materials 206/213)
ISBN: 0-87849-882-6
Euro-Ceramics (ECerS) <7, 2001, Brügge>
Fraunhofer IKTS ()
additive content; process condition; grain morphology; Ca α-SiAlON

Two types of Y-alpha -SiAlON composition, with different amounts of additional liquid phase were densified in a gas pressure sintering furnace using three different sintering cycles. One series of samples was heated up to 1825 degreesC for 3 hrs, another group of samples was held at a lower temperature (1500 degreesC or 1600 degreesC) for I hr and then heated up to 1825 degreesC for 3 hrs. The effect of the amounts of sintering additive and processing conditions on density and microstructure were evaluated.