Effect of a LZSA Glass Infiltration on the Properties of a Porous Ceramic Composite Material Derived from Polysiloxane/Al/Nb

Abstract:

By using the active filler controlled polymer pyrolysis, new and cost-effective composite materials can be obtained. In this work, ceramic matrix composites were prepared by using this precursor route, using a polysiloxane network filled with metallic niobium and aluminum powders as active fillers. The mixtures were blended, uniaxially warm pressed, and pyrolyzed in flowing argon at 1400 °C. Porous ceramic preforms were infiltrated with a LZSA glass material, in order to improve the density of a porous composite material. The properties of the pyrolyzed composite material and the effect of the LZSA infiltration on the Al2O3-NbC-SiOC ceramic composite material were investigated. The results have showed that the infiltration processes has improved the physical and mechanical properties of the composite material.

• Periodical: Materials Science Forum (Volumes 591-593)
• Pages: 409-414
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.591-593.409
• Online since: August 2008
• Authors: Wilson Acchar, Marcus Diniz, Ygor Alexandre A. Fonseca, F.C.C. Costa
• Keywords: Composite Material, Glass Infiltration, Glass Property, Polymer Pyrolysis

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