Transmission electron microscopy on Zr- and Hf-borides with MoSi2 addition: Densification mechanisms (Articolo in rivista)

Type

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

Label

• Transmission electron microscopy on Zr- and Hf-borides with MoSi2 addition: Densification mechanisms (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

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

• 10.1557/JMR.2010.0126 (literal)

Alternative label

• Silvestroni, Laura; Kleebe, Hans-Joachim; Lauterbach, Stefan; Muller, Mathis; Sciti, Diletta (2010)
  Transmission electron microscopy on Zr- and Hf-borides with MoSi2 addition: Densification mechanisms
  in Journal of materials research
  (literal)

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

• Silvestroni, Laura; Kleebe, Hans-Joachim; Lauterbach, Stefan; Muller, Mathis; Sciti, Diletta (literal)

Pagina inizio

• 828 (literal)

Pagina fine

• 834 (literal)

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

• 25 (literal)

Rivista

• Journal of materials research (Rivista)

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

• 7 (literal)

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

• 5 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Consiglio Nazionale delle Ricerche (CNR); Darmstadt University of Technology (literal)

Titolo

• Transmission electron microscopy on Zr- and Hf-borides with MoSi2 addition: Densification mechanisms (literal)

Abstract

• The microstructures of two pressureless sintered ceramics. ZrB2 and HfB2 with 20 vol% MoSi2 added, were analyzed by scanning and transmission electron microscopies. Carbides and oxides of the transition metals and MoB were observed to be well dispersed within the boride matrix. Mo5Si3 and Mo5SiB2, with Zr or Hf impurities, were observed at triple grain junctions and showed a partial wetting of the matrix. It was also noticed that the borides had a core-shell structure, which was especially pronounced in the ZrB2-based composite. The experimental results suggest the formation of a Mo-Si-B liquid phase at high temperature, which strongly promoted the densification. The densification mechanisms are discussed in light of the microstructure evolution on sintering, thermodynamic considerations, and the phase diagrams of the species involved. (literal)

Prodotto di

• Institute of science and technology for ceramics (ISTEC) (Istituto)
• Produzione e caratterizzazione di materiali ceramici compositi funzionali elettroconduttivi e ad alta lavorabilità. (SP.P01.033.002) (Modulo)

Autore CNR

• LAURA SILVESTRONI (Unità di personale interno)
• DILETTA SCITI (Unità di personale interno)

Incoming links:

Prodotto

• Institute of science and technology for ceramics (ISTEC) (Istituto)
• Produzione e caratterizzazione di materiali ceramici compositi funzionali elettroconduttivi e ad alta lavorabilità. (SP.P01.033.002) (Modulo)

Autore CNR di

• DILETTA SCITI (Unità di personale interno)
• LAURA SILVESTRONI (Unità di personale interno)

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

• Journal of materials research (Rivista)