HREM and EDS analysis of sintered SiC fibre reinforced MAS glass composites

K. Nagahisa, Makoto Yoshida, E. Abe, H. Fukunaga, G. Sasaki

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A polycrystalline-sintered SiC fibre reinforced magnesium-aluminosilicate (MAS) glass composite was fabricated by hot-pressing. The unidirectionally reinforced composite with a fibre volume fraction (Vf) of 50% and density of 2.84 g cm-3 was obtained. The matrix was composed of a glass phase, and Mg2Al4Si5O18 and ZnAl2O4 crystalline phases. The three-point flexural strength and quasi-static adsorbed energy of the composites at room temperature were 500 MPa and 6000 J m-2, respectively. A SiO2-rich glass layer was formed around the fibre. Furthermore, a 5-40 nm wide carbon-rich silicon-oxycarbide interphase with a layered structure was determined between the fibre and the SiO2-rich glass layer. The formation of both layers was caused by super-saturated oxygen which was contained in the raw glass powder. The preferable mechanical properties are due to the nano-scale interphase which allows for suitable interfacial bonding.

Original languageEnglish
JournalJournal of Electron Microscopy
Volume51
Issue numberSUPPL.
Publication statusPublished - 2002
Externally publishedYes

Fingerprint

High resolution electron microscopy
Aluminosilicates
Glass
Magnesium
magnesium
Energy dispersive spectroscopy
composite materials
fibers
Fibers
glass
Composite materials
Interphase
fiber volume fraction
hot pressing
flexural strength
Silicon
Hot pressing
Bending strength
Powders
Volume fraction

Keywords

  • CMC
  • HREM
  • Interphase
  • MAS glass
  • Sintered SiC fiber
  • TEM-EDS

ASJC Scopus subject areas

  • Instrumentation

Cite this

HREM and EDS analysis of sintered SiC fibre reinforced MAS glass composites. / Nagahisa, K.; Yoshida, Makoto; Abe, E.; Fukunaga, H.; Sasaki, G.

In: Journal of Electron Microscopy, Vol. 51, No. SUPPL., 2002.

Research output: Contribution to journalArticle

Nagahisa, K. ; Yoshida, Makoto ; Abe, E. ; Fukunaga, H. ; Sasaki, G. / HREM and EDS analysis of sintered SiC fibre reinforced MAS glass composites. In: Journal of Electron Microscopy. 2002 ; Vol. 51, No. SUPPL.
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