Effect of Oxidation at Elevated Temperature on Elastic and Interface Properties of Ceramic Matrix Composites
Unidirectionally reinforced ceramic matrix composites (CMC) with matrix derived by pyrolysis of polymethylsiloxane or polymethylphenylsiloxane resins and reinforced with Nicalon or Nextel fibres were investigated. In order to assess and mutually compare their mechanical properties and stability when exposed to hot air up to 1200°C their elasticity moduli were measured prior to and after this exposure. The oxidation - induced damage of the material was monitored also in terms of microstructural features. Moreover, an attempt was undertaken to assess the bonding level by monitoring the push - through of macroscopic bundles of fibres using a flat indentor.
J. Dusza, R. Danzer and R. Morrell
J. Brandstetter et al., "Effect of Oxidation at Elevated Temperature on Elastic and Interface Properties of Ceramic Matrix Composites", Key Engineering Materials, Vol. 290, pp. 340-343, 2005