Hot pressing of hafnium diboride aided by different sinter additives (Articolo in rivista)

Type

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

Label

• Hot pressing of hafnium diboride aided by different sinter additives (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Alternative label

• F. Monteverde (2008)
  Hot pressing of hafnium diboride aided by different sinter additives
  in Journal of materials science
  (literal)

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

• F. Monteverde (literal)

Pagina inizio

• 1002 (literal)

Pagina fine

• 1007 (literal)

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

• 43 (literal)

Rivista

• Journal of materials science (Rivista)

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

• In: Journal of Materials Science, vol. 43 (3) pp. 1002 - 1007. Springer, 2008. (literal)

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

• 6 (literal)

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

• 3 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• CNR-ISTEC, Faenza (literal)

Titolo

• Hot pressing of hafnium diboride aided by different sinter additives (literal)

Abstract

• Experiments were conducted by hot-pressing to densify HfB2 commercial powders using HfSi2 (5 vol%) or B4C (7 vol%) as sinter additives. The former was very effective as sintering enhancer: 15 min at 1,600°C was a sufficient condition to achieve near full density. The occurrence of a liquid phase sintering, which substantially enhanced densification during hot-pressing, was found out. The HfB2-B4C powder mixture, hot-pressed at 1,900°C for 40 min, achieved a relative density of 94%. Aside the key role of sintering enhancer, B4C also allowed the development of a uniform microstructure, preventing an excessive growth of the diboride matrix (2 micron mean size). On the contrary, thanks to the liquid phase that sustained substantial transfer of mass during heating, the HfSi2-doped composition had an uneven and more obvious grain growth (4 micron mean size), with faceted diboride grains up to 10 micron. (literal)

Prodotto di

• 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

• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Hot pressing of hafnium diboride aided by different sinter additives" (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

• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)

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

• Journal of materials science (Rivista)

Insieme di parole chiave di

• Keywords of "Hot pressing of hafnium diboride aided by different sinter additives" (Insieme di parole chiave)