Boron nitride coated ceramic fibers and coating method

Details Boron nitride coated ceramic fibers and coating method Boron nitride coated ceramic fibers and coating method

1986-04-07

1990-08-14

Childs, Sadie

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427255, 4272554, 428366, 428375, 428388, D04H 158, B32B 900

Patent

active

049486624

ABSTRACT:
Oxide-based ceramic fibers are treated in a novel process to create a substantially uniform boron nitride barrier coating at their surface. The process involves heating the fibers in a nitriding atmosphere at between about 2200-2600.degree. F. to create a BN coating at the surface of the fiber from boron initially within the fiber.

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