Characterisation and High Temperature Mechanical Properties of Zirconium Boride-Based Materials (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Characterisation and High Temperature Mechanical Properties of Zirconium Boride-Based Materials (Articolo in rivista) (literal)

Anno

• 2002-01-01T00:00:00+01:00 (literal)

Alternative label

• J.J Melendez-Martinez*, A. Dominguez-Rodriguez*, F. Monteverde**, C. Melandri**, G. De Portu** (2002)
  Characterisation and High Temperature Mechanical Properties of Zirconium Boride-Based Materials
  in Journal of the European Ceramic Society
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• J.J Melendez-Martinez*, A. Dominguez-Rodriguez*, F. Monteverde**, C. Melandri**, G. De Portu** (literal)

Pagina inizio

• 2543 (literal)

Pagina fine

• 2549 (literal)

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• 22 (literal)

Rivista

• Journal of the European Ceramic Society (Rivista)

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• 7 (literal)

Note

• ISI Web of Science (WOS) (literal)

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• * Department de F?´sica de la Materia Condensada, University of Seville, Box 1065, 41080 Seville, Spain ** ISTEC-CNR (literal)

Titolo

• Characterisation and High Temperature Mechanical Properties of Zirconium Boride-Based Materials (literal)

Abstract

• Two different ZrB2-based materials were produced by hot pressing: pure ZrB2 and ZrB2+4wt.% Ni. The relative densities of the two materials were 86.5 and 98.0%, respectively. Several physical and mechanical properties were measured in ambient air. From these data it appears that the porosity of 13.5% of pure ZrB2 strongly affects the properties. However at high temperature the presence of Ni-rich phases dominates the fracture behaviour and is responsible for the dramatic strength degradation (especially at 1200 °C). The high temperature creep was evaluated by uniaxial compression tests. Samples of both materials were deformed in argon atmosphere at temperatures between 1400 and 1600 °C and at stresses ranging between 47.0 and 472.3 MPa (pure ZrB2) and 10–63.5 MPa (Ni-doped ZrB2). Pure ZrB2 showed a ductile behaviour under these conditions. On the other hand, Ni-doped ZrB2 failed catastrophically for stresses higher than 25 MPa, approximately, at relatively low strains, showing a ductile behaviour only at lower stresses. This behaviour may be related to the presence of Ni-rich grain boundary phases at triple points of the grain structure. (literal)

Prodotto di

• Ceramici e compositi ultrarefrattari (UHTC) per applicazioni spaziali e strutturali (SP.P01.033.001) (Modulo)
• Institute of science and technology for ceramics (ISTEC) (Istituto)

Autore CNR

• GOFFREDO DE PORTU (Persona)
• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)
• CESARE MELANDRI (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Characterisation and High Temperature Mechanical Properties of Zirconium Boride-Based Materials" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of science and technology for ceramics (ISTEC) (Istituto)
• Ceramici e compositi ultrarefrattari (UHTC) per applicazioni spaziali e strutturali (SP.P01.033.001) (Modulo)

Autore CNR di

• GOFFREDO DE PORTU (Persona)
• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)
• CESARE MELANDRI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of the European Ceramic Society (Rivista)

Insieme di parole chiave di

• Parole chiave di "Characterisation and High Temperature Mechanical Properties of Zirconium Boride-Based Materials" (Insieme di parole chiave)