Porous fiber-ceramic composite

Details Porous fiber-ceramic composite Porous fiber-ceramic composite

2004-12-01

2008-12-02

Theisen, Mary Lynn F (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Stratified or layered articles

C264S122000, C264S069000

Reexamination Certificate

active

07459110

ABSTRACT:
Both ceramic and intermetallic materials as a rule have a very small elongation at break of distinctly less than 0.3% and therefore a break behaviour with low damage tolerance. In order to increase the damage tolerance, it is important to increase the elongation at break to at least 0.3% or more. This can be achieved by introducing, for example, fibres consisting of carbon or ceramic or metal fibres into the matrix. It is important in this respect for the distribution of the fibres in the matrix to be homogeneous and/or defined. It is of advantage and therefore as a rule desirable for the fibres for reinforcing a material or component to be oriented in a defined direction which is adapted to the main stress.Therefore, according to the invention, a fibre-ceramic composite is proposed which consists of a ceramic matrix with a pore proportion of 0% to 75% and a fibre proportion of 5% by volume to 30% by volume, wherein the distribution of the fibres in the matrix is homogeneous and/or defined, and their quantity and orientation are optimized in relation to the material load.

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