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Properties and Interface Structures of Ni and Ni-Ti Alloy Toughened Al2O3 Ceramic Composites

Zhang, X.; Lu, G.; Hoffmann, M. J.; Metselaar, R.

Ni/Al2O3 and Ni-Ti/Al2O3 composites sintered in different atmospheres
are investigated Argon as a sintering atmosphere is found to be more
beneficial to the fracture toughness of the composites than CO. Ni
inclusions at 12 vol.% enhance the fracture toughness up to 36%,
corresponding to a fracture energy twice that of the alumina matrix,
whereas titanium alloying to Ni makes a negative contribution to the
mechanical behaviour. The interfacial structures of Ni/Al2O3 and
Ni-Ti/Al2O3 are studied by using electron microscopy. The titanium
distribution at the interfaces is studied and correlated to the
mechanical properties.

Zugehörige Institution(en) am KIT Institut für Keramik im Maschinenbau (IKM)
Publikationstyp Zeitschriftenaufsatz
Jahr 1995
Sprache Englisch
Identifikator ISSN: 0955-2219
KITopen ID: 1000007782
Erschienen in Journal of the European Ceramic Society
Band 15
Heft 3
Seiten 225-232
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