Fabrication of ultra-high temperature ceramics? from ultrafine HfC and TaC synthesized powders (Abstract/Poster in convegno)

Type

• Prodotto della ricerca (Classe)
• Abstract/Poster in convegno (Classe)

Label

• Fabrication of ultra-high temperature ceramics? from ultrafine HfC and TaC synthesized powders (Abstract/Poster in convegno) (literal)

Anno

• 2009-01-01T00:00:00+01:00 (literal)

Alternative label

• Silvestroni L.; Sciti D.; Monteverde F.; Zhang G.; Liu J. (2009)
  Fabrication of ultra-high temperature ceramics? from ultrafine HfC and TaC synthesized powders
  in 11th International Conference and Exhibition of the European Ceramic Society, Krakow (Poland)
  (literal)

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

• Silvestroni L.; Sciti D.; Monteverde F.; Zhang G.; Liu J. (literal)

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

• In: XI ECERS - 11th International Conference and Exhibition of the European Ceramic Society (Krakow (Poland), 21-25 june 2009). (literal)

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

• Hafnium Carbide (HfC) and Tantalum Carbide (TaC) are important members in the group of ultra high temperature ceramics (UHTCs). Thanks to melting point approaching 4000ºC, they become desirable material for structures operating at very high temperature, such as components of space aircrafts and rocket nozzles. However, due to strong covalent bonds and low self-diffusion coefficients, densification is very difficult.Commercial TaC and HfC powders have typically been processed by hot-pressing at 2200-2700°C. Sinterability is significantly affected by the quality of starting powders: fine particle size and low oxygen content are desirable characteristics for improving sinterability and thus achieving high performance ceramics. Purpose of this work was to synthesize fine HfC and TaC powders and process them at temperature below 2000°C to prevent coarsening and therefore develop fine microstructures. (literal)

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

• CNR-ISTEC, Faenza, State Key Laboratory of High Performance Ceramics, Shanghai Institute of Ceramics, China (literal)

Titolo

• Fabrication of ultra-high temperature ceramics? from ultrafine HfC and TaC synthesized powders (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

• DILETTA SCITI (Unità di personale interno)
• LAURA SILVESTRONI (Persona)
• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)

Insieme di parole chiave

• Parole chiave di "Fabrication of ultra-high temperature ceramics? from ultrafine HfC and TaC synthesized powders" (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

• DILETTA SCITI (Unità di personale interno)
• FREDERIC TULLIO MONTEVERDE (Unità di personale interno)
• LAURA SILVESTRONI (Persona)

Insieme di parole chiave di

• Parole chiave di "Fabrication of ultra-high temperature ceramics? from ultrafine HfC and TaC synthesized powders" (Insieme di parole chiave)