Fibrous material-containing composite
First Claim
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1. A process for making a composite containing fibrous material embedded in a ceramic matrix which comprises:
- (a) forming a laminated structure comprising at least one layer of fibrous material disposed between layers of tape comprising a ceramic matrix material having a thermal expansion coefficient which is less than about 15% higher than that of the fibrous material and an organic binder material;
(b) heating the laminated structure to remove the organic binder material; and
(c) hot pressing the resulting laminated structure at a temperature and pressure to consolidate the structure into a composite having a porosity of less than about 5% by volume, at least about 10% by volume of the composite being fibrous material.
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Abstract
A composite is produced by admixing a matrix-forming material with organic binding material, forming the resulting mixture into a tape, disposing a layer of fibrous material between at least two of the tapes to form a layered structure, laminating the layered structure, heating the layered structure to remove organic binding material and hot pressing the resulting porous structure to form a composite containing a layer of fibrous material.
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Citations
22 Claims
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1. A process for making a composite containing fibrous material embedded in a ceramic matrix which comprises:
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(a) forming a laminated structure comprising at least one layer of fibrous material disposed between layers of tape comprising a ceramic matrix material having a thermal expansion coefficient which is less than about 15% higher than that of the fibrous material and an organic binder material; (b) heating the laminated structure to remove the organic binder material; and (c) hot pressing the resulting laminated structure at a temperature and pressure to consolidate the structure into a composite having a porosity of less than about 5% by volume, at least about 10% by volume of the composite being fibrous material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process for making a comprising comprising a plurality of layers of fibrous material embedded in a ceramic matrix which comprises:
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(a) forming layered structure of a plurality of tapes comprising a ceramic matrix material and an organic binder material wherein each layer of fibrous material is disposed between the faces of the tapes; (b) heating the layered structure to remove the organic binder material; and (c) hot pressing the resulting layered structure at a temperature and pressure to consolidate the structure to produce a composite having a porosity of less than about 5% by volume, the matrix having a thermal expansion coefficient which is less than about 15% higher than that of the fibrous material, and at least about 10% by volume of the composite being fibrous material. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification