Potential and Perspectives for Oxide/Oxide Composites.

Abstract : The challenge for oxide/oxide composites is to provide an alternative to SiC/SiC composites with the aim of decreasing the cost of manufacture and improving the thermal stability in air at high temperature. Oxide/oxide composites consist of a porous alumina matrix reinforced by fibers of the same nature. Obtaining a controlled rate of porosity in the preparation helps to dissipate the energy associated with the propagation of cracks in the matrix during loading. It follows that the composite is damage-tolerant without requiring a carbon coating on the fibers as in the case of SiC/SiC composites. Using submicron alumina powders and specific additives necessary for shaping and for control of the sintering shrinkage, the first composites were obtained by developing a method of infiltration into fibrous reinforcements. To increase the fiber volume fraction and thus the mechanical properties, processes based on the prepreg molding in a plastic bag of a suspension in a fiber preform were selected. The development of these various processing routes is outlined in relation with the evolution of properties. The development of thermal barrier coatings based on microporous oxide is also presented, in order to extend the thermostructural potential beyond 1200°C.
Document type :
Journal articles
Complete list of metadatas

Cited literature [21 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01183659
Contributor : Véronique Soullier <>
Submitted on : Monday, August 10, 2015 - 3:29:06 PM
Last modification on : Tuesday, March 26, 2019 - 2:24:04 PM
Long-term archiving on : Wednesday, November 11, 2015 - 10:21:45 AM

File

ISP1205.1326720709.pdf
Explicit agreement for this submission

Identifiers

  • HAL Id : hal-01183659, version 1

Collections

Citation

M. Parlier, M.H. Ritti, A. Jankowiak. Potential and Perspectives for Oxide/Oxide Composites.. AerospaceLab, 2011, p. 1-12. ⟨hal-01183659⟩

Share

Metrics

Record views

300

Files downloads

437