On the comparsion of additive-free HfB2-SiC ceramics sintered by reactive hot-pressing and spark plasma sintering (Contributo in atti di convegno)

Type

• Contributo in atti di convegno (Classe)
• Prodotto della ricerca (Classe)

Label

• On the comparsion of additive-free HfB2-SiC ceramics sintered by reactive hot-pressing and spark plasma sintering (Contributo in atti di convegno) (literal)

Anno

• 2005-01-01T00:00:00+01:00 (literal)

Alternative label

• F. Monteverde, A. Bellosi (2005)
  On the comparsion of additive-free HfB2-SiC ceramics sintered by reactive hot-pressing and spark plasma sintering
  in 29th International Conference on Advanced Ceramics and Composites, Cocoa Beach, Florida, 23-28/01/20005
  (literal)

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

• F. Monteverde, A. Bellosi (literal)

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

• Fornito contributo orale \"Reactive hot-pressing of a HfB2-SiC composite\" (literal)

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

• Development in advanced ceramics and composites (literal)

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

• ISTEC-CNR (literal)

Titolo

• On the comparsion of additive-free HfB2-SiC ceramics sintered by reactive hot-pressing and spark plasma sintering (literal)

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

• 1-57498-261-3 (literal)

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

• M. Brito, P. Filip, C. Lewinsohn, A. Sayir, M. Opeka, W.M. Mullin (literal)

Abstract

• Ultra-high-temperature HfB2-SiC ceramics were produced by reactive hot-pressing (RHP) and spark plasma sintering (SPS) successfully. In the former case, a mixture of Hf/Si/B4C, mechanically mixed in molar ratio 2.2/0.8/1, was \"in-situ\" converted into HfB2 and SiC, and then directly hot-pressed until full density was achieved. In the SPS case, a powder mixture of HfB2 + 30vol% SiC was fully densified at 2,100°C, 100°C/min heating rate and 2 min dwell time. The microstructure in both the materials consisted of faceted diboride grains, finer in the RHP case, with SiC particles evenly distributed intergranularly. The combination of some thermo-mechanical properties was of considerable significance. Flexural strength of the RHP fabricated material measured at 25 °C and 1,500 °C in ambient air was 770?35 and 310?15 MPa, respectively. A relevant merit characterized fracture toughness and flexural strength of the material produced by SPS: the values measured at room temperature (3.9?0.3 MPa?m and 590?50 MPa, respectively) did not decrease appreciably at 1500 °C (4.0?0.1 MPa?m and 600?15 MPa, respectively). (literal)

Prodotto di

• Institute of science and technology for ceramics (ISTEC) (Istituto)
• Produzione, lavorazione e caratterizzazione di ceramici e compositi strutturali a progettazione funzionale (SP.P01.008.001) (Modulo)

Autore CNR

• ALIDA BELLOSI (Persona)
• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)

Insieme di parole chiave

• Keywords of "On the comparsion of additive-free HfB2-SiC ceramics sintered by reactive hot-pressing and spark plasma sintering" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of science and technology for ceramics (ISTEC) (Istituto)
• Produzione, lavorazione e caratterizzazione di ceramici e compositi strutturali a progettazione funzionale (SP.P01.008.001) (Modulo)

Autore CNR di

• ALIDA BELLOSI (Persona)
• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)

Insieme di parole chiave di

• Keywords of "On the comparsion of additive-free HfB2-SiC ceramics sintered by reactive hot-pressing and spark plasma sintering" (Insieme di parole chiave)