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SiC/Si3N4 nano/micro-composite - processing, RT and HT mechanical properties

Sajgalik, P.; Hnatko, M.; Lofaj, F.; Hvizdos, P.; Dusza, J.; Warbichler, P.; Hofer, F.; Riedel, R.; Lecomte, E.; Hoffmann, M. J.

Abstract: Two SiC/Si3N4 nano/micro composites were prepared from a starting mixture of crystalline alpha-Si3N4, amorphous SiNC, Y2O3 and/or Al2O3. The composite material for room temperature (RT) application has high strength of 1200 MPa, Weibull modulus of 19 and moderate fracture toughness of 7 MPa m(1/2). The composite for high temperature (HT) application, without Al2O3 has RT strength of 710 MPa and is able to keep 60% of its RT strength up to 1300 degrees C, The creep resistance of composite material is approx. 1 order higher compared to relative monolith up to 1400 degrees C.


Zugehörige Institution(en) am KIT Institut für Keramik im Maschinenbau (IKM)
Publikationstyp Zeitschriftenaufsatz
Jahr 2000
Sprache Englisch
Identifikator ISSN: 0955-2219
KITopen ID: 1000007695
Erschienen in Journal of the European Ceramic Society
Band 20
Heft 4
Seiten 453-462
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