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US 7,901,775 B2Granted
C/C composite material
AssigneeHonda Motor Co., Ltd.
InventorMakoto Miyamoto
Life of this patent
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Abstract
Disclosed is a C/C composite material precursor which gives a C/C composite material by calcination including: carbon fiber, a matrix, and void-forming core which is burnt out or reduces the volume thereof at lower temperatures than temperature of the calcination and forms a void which has openings on the surface of the C/C composite material after calcination. Also disclosed is a method for producing a C/C composite material by calcination of the precursor; and the composite material obtained by the calcination.
Claims9
A calcinated C/C composite material comprising:
- a plurality of identical layers, each layer having at least two pairs of parallel and opposing side surfaces and being formed of a carbonaceous material comprising carbon fiber and a matrix;
- and
- at least one void-forming core surrounded by a pair of adjacent layers of the plurality of layers, wherein the at least one void-forming core is made of a material that is burnt out at lower temperatures than a calcination temperature to form a void which defines openings in at least one side surface of each pair of side surfaces of said each layer after the C/C composite material is subjected to calcination, wherein the void contains air that thermally insulates the C/C composite material;
- and
- wherein the plurality of layers are laminated on top of each other and the at least one void-forming core extends between opposing surfaces of each pair of adjacent layers to form the void between the opposing surfaces of each pair of adjacent layers.
2 more elements
Dependencies are inferred from the claim text.