ZrB2 + 15 vol.% MoSi2 composites were densified by spark plasma sintering and conventional hot pressing at the same sintering conditions, i.e. maximum temperature: 1750 ◦C, applied pressure: 30MPa and heating rate: 100–150 K/min. The densification behaviour was investigated through the analysis of the hot pressing and spark plasma sintering shrinkage curves. The microstructures were analyzed and compared in order to understand the influence of the two sintering techniques. The following mechanical properties were measured:Vickers hardness, fracture toughness, Young’s modulus and 4-pt bending strength. The main outcome of the present work is that when the ZrB2-based composite was densified either by spark plasma sintering or by hot pressing using the same sintering parameters, no differences were observed in terms of microstructural features and mechanical properties.

Spark plasma sintering and hot pressing of ZrB2–MoSi2 ultra-high-temperature ceramics

BALBO, Andrea
Primo
;
2007

Abstract

ZrB2 + 15 vol.% MoSi2 composites were densified by spark plasma sintering and conventional hot pressing at the same sintering conditions, i.e. maximum temperature: 1750 ◦C, applied pressure: 30MPa and heating rate: 100–150 K/min. The densification behaviour was investigated through the analysis of the hot pressing and spark plasma sintering shrinkage curves. The microstructures were analyzed and compared in order to understand the influence of the two sintering techniques. The following mechanical properties were measured:Vickers hardness, fracture toughness, Young’s modulus and 4-pt bending strength. The main outcome of the present work is that when the ZrB2-based composite was densified either by spark plasma sintering or by hot pressing using the same sintering parameters, no differences were observed in terms of microstructural features and mechanical properties.
File in questo prodotto:
File Dimensione Formato  
Balbo-A._Spark-plasma-sintering-and-hot-pressing-of-ZrB2-MoSi2-ultra-high-temperature-ceramics_Mater.-Sci.-Eng.-A_2008_475_1-2_108_112.hta.pdf

solo gestori archivio

Descrizione: Full text editoriale
Tipologia: Full text (versione editoriale)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 577.27 kB
Formato Adobe PDF
577.27 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/532959
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 83
  • ???jsp.display-item.citation.isi??? 71
social impact