Ceramic fibers having improved surface properties/rupture streng

Details Ceramic fibers having improved surface properties/rupture streng Ceramic fibers having improved surface properties/rupture streng

1989-05-10

1991-08-27

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

65 31, 156646, 156657, 252 793, 501 35, 501 95, 427309, B44C 122, C03C 1500, C03C 2506

Patent

active

050430459

ABSTRACT:
Ceramic fibers based on silicon carbide, silicon nitride or silicon carbonitride are treated with hydrofluoric acid, e.g., with a 3% to 30% aqueous solution of HF, to strip surface impurities therefrom, to reduce critical surface defects and to enhance the rupture strength thereof.

REFERENCES:
patent: 2261148 (1941-11-01), Ebaugh
patent: 3640693 (1972-02-01), Galasso et al.

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