Microstructure and mechanical properties of novel ternary electroconductive ceramics (Articolo in rivista)

Type
Label
  • Microstructure and mechanical properties of novel ternary electroconductive ceramics (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1557/JMR.2004.0428 (literal)
Alternative label
  • Diletta Sciti; Stefano Guicciardi (2004)
    Microstructure and mechanical properties of novel ternary electroconductive ceramics
    in Journal of materials research
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Diletta Sciti; Stefano Guicciardi (literal)
Pagina inizio
  • 3343 (literal)
Pagina fine
  • 3352 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://journals.cambridge.org/download.php?file=%2FJMR%2FJMR19_11%2FS0884291400087355a.pdf&code=598453c23cd87ad483c2e95bce65491e (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 19 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 10 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ISTEC-CNR, I-48018 Faenza, Italy (literal)
Titolo
  • Microstructure and mechanical properties of novel ternary electroconductive ceramics (literal)
Abstract
  • Electroconductive ceramic composites, constituted of an insulating matrix (a composite AlN-SiC) containing 30 vol% of an electroconductive phase (MoSi2, ZrB2, or ZrC), were densified through hot-pressing. Microstructure and mechanical properties were compared to those of the AlN-SiC matrix material. All the ternary composites are good electrical conductors, with resistivities in the range 0.3 × 10-3 to 4 × 10-3 ohm·cm. Room temperature properties are improved by the addition of the electroconductive particles. Strength and toughness measurements at high temperature show that MoSi2-containing composite is stable up to 1300 °C (strength 611 MPa, toughness 3.7 MPa·m1/2), whereas ZrB2-containing composite is stable up to 1000 °C. ZrC-containing composite is not suitable for high-temperature applications due to poor oxidation resistance. (literal)
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