Mechanical properties of continuous carbon fibre reinforced silicon nitride: Influence of fibre coatings
- Institute of Advanced Material, Petten (Netherlands)
The entrainment of long carbon fibres into a Si{sub 3}N{sub 4} ceramic matrix improves the fracture toughness and wear properties of the ceramic but introduces a chemical and physical instability resulting from interaction between the fibre and matrix phases. The mechanisms of toughening rely largely upon the formation of weak interphase bonding along the fibre-matrix interface and upon the residual thermal stresses arising from processing. From this, improved failure behaviour may be engineered by mechanical and chemical modification of the interface, achieved most effectively by the choice of reinforcement phase and by pre-coating of the fibres prior to fabrication of the composite. Flexural testing and microstructural T.E.M analysis were used to compare the effect of the various fibre and coating interlayers (SiC, C/SiC).
- OSTI ID:
- 135771
- Report Number(s):
- CONF-9508127-; TRN: 95:006889-0034
- Resource Relation:
- Conference: 2. international conference on high temperature ceramic matrix composites, Santa Barbara, CA (United States), 21-25 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of Ceramic transactions: High-temperature ceramic-matrix composites I: Design, durability, and performance. Volume 57; Evans, A.G.; Naslain, R. [eds.]; PB: 517 p.
- Country of Publication:
- United States
- Language:
- English
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