United Kingdom Atomic Energy Authority

John Cook

David S Rickerby

Clive F Knights

Silicon carbide filaments are coated to protect them from attack by a titanium matrix material when incorporating them into a metal matrix composite. The coating method comprises coating the filaments firstly with a carbon layer and then with a titanium carbide or boride layer whose carbon or boron content decreases progressively from its interface with the carbon layer to its exterior surface. A layer of titanium or a titanium based alloy may be provided on the titanium carbide or boride layer to facilitate incorporation into a metal matrix. Preferably, the layers are applied by sputter ion plating.

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Blewbury, United Kingdom

John Cook