| 摘要 |
Composite articles having a nickel base metal matrix reinforced with a plurality of high strength, high modulus carbon fibers having a thin, intermediate layer of a metal carbide disposed upon at least a portion of the fiber surfaces. Such composites are characterized by improved thermal cycling characteristics and are produced by coating a plurality of carbon fibers first with a thin, continuous layer of nickel, and then with a second thin, continuous overcoating of a metal capable of diffusing through the nickel coating and reacting with carbon to form a metal carbide; and then hot pressing the dual-coated fibers for a time and at a temperature and pressure sufficient to bond them together and diffuse at least a portion of the carbide-forming metal surface layer through the nickel undercoating and effect reaction between said carbide-forming metal and said carbon fibers to produce a metal carbide coating on at least a portion of the surface of the fibers. |
