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Composite material with a refractory fibrous reinforcement and its production process

  • US 5,334,438 A
  • Filed: 11/25/1991
  • Issued: 08/02/1994
  • Est. Priority Date: 11/28/1990
  • Status: Expired due to Fees
First Claim
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1. Composite material having a fibrous reinforcement, incorporating refractory fibres (2) embedded in a nonmetallic matrix (4) and an interphase material (6) interposed between the fibres and the matrix, characterized in that the interphase material has a thickness between 0.05 and 3 micrometers, and comprises a solid solution having a structure selected from the group consisting of a lamellar structure, an amorphous structure, and an intermediate structure between the amorphous and the lamellar structure, said solid solution containing in atomic %, 1 to 99% carbon, 1 to 99% boron, and up to 98% nitrogen.

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