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Processing and Properties of Intermetallic/Ceramic Composites with Interpenetrating Microstructure
Author(s) -
Klassen Thomas,
Günther Robert,
Dickau Birte,
Gärtner Frank,
Bartels Arno,
Bormann Rüdiger,
Mecking Heinrich
Publication year - 1998
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1998.tb02654.x
Subject(s) - materials science , intermetallic , composite material , ceramic , microstructure , fracture toughness , sintering , flexural strength , toughness , electrical resistivity and conductivity , alloy , electrical engineering , engineering
Intermetallic/ceramic composites represent an interesting class of materials for high‐temperature structural and functional applications. These materials can be prepared via high‐energy milling of pure metals with Al 2 O 3 as well as of aluminum with metal oxides. During subsequent compaction via pressureless sintering, the components react to form dense composites that consist of interpenetrating networks of the ceramic and intermetallic phases. Microstructural investigations, mechanical properties, and resistivity and wear resistance measurements of selected composites are presented. Improved fracture toughness and bending strength, with respect to monolithic Al 2 O 3 , have been achieved.