초록 ▼

Composite material with matrix and reinforcing fibres of carbon and its production process. The composite material according to the invention comprises a substrate (2) of carbon fibres covered with a fine silicon carbide coating (6) and embedded in a carbon matrix (4) containing 2 to 10% by weight s

Composite material with matrix and reinforcing fibres of carbon and its production process. The composite material according to the invention comprises a substrate (2) of carbon fibres covered with a fine silicon carbide coating (6) and embedded in a carbon matrix (4) containing 2 to 10% by weight silicon carbide, an outer silicon carbide covering (10), followed by a first filling of the cracks with silica (14) and a second filling with borosilicate glass (16) (SiO2-B2O3). This unoxidizable material can in particular be used as a heat shield for a spacecraft.

대표청구항 ▼

Composite material comprising a carbon fiber substrate embedded in a matrix (4), each fiber (2) being covered with a first fine silicon carbide coating (6), said matrix (4) being made of carbon doped with amorphous silicon carbide which represents at the most 20% by weight of said matrix, an outer s

Composite material comprising a carbon fiber substrate embedded in a matrix (4), each fiber (2) being covered with a first fine silicon carbide coating (6), said matrix (4) being made of carbon doped with amorphous silicon carbide which represents at the most 20% by weight of said matrix, an outer silicon carbide covering (10) protecting said matrix (4), and a plug of cracks (12) of said outer covering (10), said plug comprising a borosilicate glass (16).