Chemical durability of silicon oxycarbide glasses

Gian Domenico Sorarù, Stefano Modena, Emanuel Guadagnino, Paolo Colombo, James Egan, Carlo G. Pantano

Research output: Contribution to journalArticle

167 Citations (Scopus)

Abstract

Silicon oxycarbide (SiOC) glasses with controlled amounts of Si-C bonds and free carbon have been produced via the pyrolysis of suitable preceramic networks. Their chemical durability in alkaline and hydrofluoric solutions has been studied and related to the network structure and microstructure of the glasses. SiOC glasses, because of the character of the Si-C bonds, exhibit greater chemical durability in both environments, compared with silica glass. Microphase separation into silicon carbide (SiC), silica (SiO2), and carbon, which usually occurs in this system at pyrolysis temperatures of > 1000°-1200°C, exerts great influence on the durability of these glasses. The chemical durability decreases as the amount of phase separation increases, because the silica/silicate species (without any carbon substituents) are interconnected and can be easily leached out, in comparison with the SiOC phase, which is resistant to attack by OH- or F- ions.

Original languageEnglish (US)
Pages (from-to)1529-1536
Number of pages8
JournalJournal of the American Ceramic Society
Volume85
Issue number6
DOIs
StatePublished - Jan 1 2002

Fingerprint

Silicon
durability
silicon
Durability
glass
Glass
Carbon
Silicon Dioxide
silica
Pyrolysis
pyrolysis
Silica
carbon
Silicates
Microphase separation
Fused silica
Silicon carbide
Phase separation
Ions
microstructure

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Geology
  • Geochemistry and Petrology
  • Materials Chemistry

Cite this

Sorarù, G. D., Modena, S., Guadagnino, E., Colombo, P., Egan, J., & Pantano, C. G. (2002). Chemical durability of silicon oxycarbide glasses. Journal of the American Ceramic Society, 85(6), 1529-1536. https://doi.org/10.1111/j.1151-2916.2002.tb00308.x
Sorarù, Gian Domenico ; Modena, Stefano ; Guadagnino, Emanuel ; Colombo, Paolo ; Egan, James ; Pantano, Carlo G. / Chemical durability of silicon oxycarbide glasses. In: Journal of the American Ceramic Society. 2002 ; Vol. 85, No. 6. pp. 1529-1536.
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Sorarù, GD, Modena, S, Guadagnino, E, Colombo, P, Egan, J & Pantano, CG 2002, 'Chemical durability of silicon oxycarbide glasses', Journal of the American Ceramic Society, vol. 85, no. 6, pp. 1529-1536. https://doi.org/10.1111/j.1151-2916.2002.tb00308.x

Chemical durability of silicon oxycarbide glasses. / Sorarù, Gian Domenico; Modena, Stefano; Guadagnino, Emanuel; Colombo, Paolo; Egan, James; Pantano, Carlo G.

In: Journal of the American Ceramic Society, Vol. 85, No. 6, 01.01.2002, p. 1529-1536.

Research output: Contribution to journalArticle

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Sorarù GD, Modena S, Guadagnino E, Colombo P, Egan J, Pantano CG. Chemical durability of silicon oxycarbide glasses. Journal of the American Ceramic Society. 2002 Jan 1;85(6):1529-1536. https://doi.org/10.1111/j.1151-2916.2002.tb00308.x