Role of aluminum migration at the interface in SiC reinforced glass-ceramic matrix composites

Gang Qi, Carlo G. Pantano

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Aluminum is commonly observed in the surface region of SiC fibers in hot-pressed glass ceramic matrix composites. It is believed to be the result of interface reactions with Al-containing matrices. However, the influence of aluminum migration on the evolution of interphases, especially carbon enrichment, still remains unknown. In this study, reaction couples between an alumino-silicate glass and silicon-oxycarbide were used to study mass transport and interphase formation. The silicon oxycarbide, synthesized using a sol-gel process, was used to simulate the reactive phase of polymer-derived SiC fibers; in some case, it was doped with Al. A strong influence of aluminum on the carbon enrichment was observed. Using a thermodynamic model, the mechanism of the interphase evolution will be discussed.

Original languageEnglish (US)
Pages (from-to)801-808
Number of pages8
JournalCeramic Engineering and Science Proceedings
Volume16
Issue number5
StatePublished - Sep 1 1995
EventProceedings of the 19th Annual Conference and Exhibition on Composites, Advanced Ceramics, Materials, and Structures-B. Part B - Cocoa Beach, FL, USA
Duration: Jan 8 1995Jan 12 1995

Fingerprint

Ceramic matrix composites
Glass ceramics
Aluminum
Silicon
Carbon
Silicates
Fibers
Sol-gel process
Polymers
Mass transfer
Thermodynamics
Glass

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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title = "Role of aluminum migration at the interface in SiC reinforced glass-ceramic matrix composites",
abstract = "Aluminum is commonly observed in the surface region of SiC fibers in hot-pressed glass ceramic matrix composites. It is believed to be the result of interface reactions with Al-containing matrices. However, the influence of aluminum migration on the evolution of interphases, especially carbon enrichment, still remains unknown. In this study, reaction couples between an alumino-silicate glass and silicon-oxycarbide were used to study mass transport and interphase formation. The silicon oxycarbide, synthesized using a sol-gel process, was used to simulate the reactive phase of polymer-derived SiC fibers; in some case, it was doped with Al. A strong influence of aluminum on the carbon enrichment was observed. Using a thermodynamic model, the mechanism of the interphase evolution will be discussed.",
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Role of aluminum migration at the interface in SiC reinforced glass-ceramic matrix composites. / Qi, Gang; Pantano, Carlo G.

In: Ceramic Engineering and Science Proceedings, Vol. 16, No. 5, 01.09.1995, p. 801-808.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Role of aluminum migration at the interface in SiC reinforced glass-ceramic matrix composites

AU - Qi, Gang

AU - Pantano, Carlo G.

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N2 - Aluminum is commonly observed in the surface region of SiC fibers in hot-pressed glass ceramic matrix composites. It is believed to be the result of interface reactions with Al-containing matrices. However, the influence of aluminum migration on the evolution of interphases, especially carbon enrichment, still remains unknown. In this study, reaction couples between an alumino-silicate glass and silicon-oxycarbide were used to study mass transport and interphase formation. The silicon oxycarbide, synthesized using a sol-gel process, was used to simulate the reactive phase of polymer-derived SiC fibers; in some case, it was doped with Al. A strong influence of aluminum on the carbon enrichment was observed. Using a thermodynamic model, the mechanism of the interphase evolution will be discussed.

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