Influencia del tamaño del material híbrido en las características de los oxicarburos de silicio obtenidos

Translated title of the contribution: Influence of the hybrid material size in silicon oxycarbide materials characteristics

M. A. Mazo*, C. Palencia, A. Nistal, F. Rubio, J. Rubio, J. L. Oteo

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this work has been investigated the influence of the TEOS/PDMS hybrid size during the pyrolysis process to obtain the related silicon oxycarbide glasses. Hybrids monolithic pieces (100 mm × 50 mm × 5 mm), were crushed (1 mm × 1 mm × 1 mm) and grounded in agate or attrition to 16 and 3 urn, respectively. Then, they were pyrolyzed at 1100 °C to obtain silicon oxycarbide glasses (SiOC). These materials present structural and microstructural differences. The monolithic sample showed the highest %C into the silica network (34 %), and after grounding in agate mortar decreased to 26 %. However the attrition milled sample reached %C values similar to the monolithic (32 %). This agrees with FT-IR band at 880 cm'1 assigned to Si-C bonds formation and related to higher carbon content into silica network. The carbon free phase displays a domain size of 3.44 nm which increased to 3.66 nm for the attrition milled. This result is due to a higher graphitization degree. The SiOC monolithic sample morphology displays spherical interconnected particles with pores of 12 urn. This morphology disappeared for the SiOC attrition milled sample, formed by irregular particles of 3 pm.

Original languageSpanish
Pages (from-to)157-164
Number of pages8
JournalBoletin de la Sociedad Espanola de Ceramica y Vidrio
Volume51
Issue number3
DOIs
Publication statusPublished - May 2012
Externally publishedYes

Keywords

  • Hybrid
  • Porosity
  • Pyrolysis
  • Silicon oxycarbide
  • Size

ASJC Scopus subject areas

  • Mechanics of Materials
  • Industrial and Manufacturing Engineering
  • Ceramics and Composites

Fingerprint Dive into the research topics of 'Influence of the hybrid material size in silicon oxycarbide materials characteristics'. Together they form a unique fingerprint.

  • Cite this