Terence Brook Walker

US Patent:

6555173, Apr 29, 2003

Filed:

Nov 8, 2000

Appl. No.:

09/708891

Inventors:

George D. Forsythe - Landenberg PA
Terence B. Walker - South Bend IN

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B05D 302

US Classification:

4273762, 4273761, 427228, 427337, 427344, 4274197

Abstract:

The invention provides for oxidatively resistant silicon carbide coated carbon/carbon composites, a method for the preparation of these materials, and their use in high temperature applications, preferably in brakes for airplanes. The silicon carbide coated C/C composite, which is resistant to oxidation at high temperatures, is prepared by a method comprising: (a) coating a C/C composite base with a reactive carbon containing composition to form a reactive carbon coated C/C composite; followed by (b) applying a silicon containing composition to the reactive carbon coated C/C composite to form a bi-layered C/C composite; (c) heating the bi-layered C/C composite to at least the melting point of silicon to form the silicon carbide coated C/C composite; and optionally (d) applying a retardant solution to the silicon carbide coated C/C composite wherein the retardant solution comprises the ions formed from the combination of the following: 10-80 wt % H O and 90-20 wt % H PO.

US Patent:

6756121, Jun 29, 2004

Filed:

Feb 5, 2003

Appl. No.:

10/358528

Inventors:

George D. Forsythe - Landenberg PA
Terence B. Walker - South Bend IN

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B32B 900

US Classification:

428408, 4283044, 428446, 428457, 428471

Abstract:

The invention provides for oxidatively resistant silicon carbide coated carbon/carbon composites, a method for the preparation of these materials, and their use in high temperature applications, preferably in brakes for airplanes. The silicon carbide coated C/C composite, which is resistant to oxidation at high temperatures, is prepared by a method comprising: (a) coating a C/C composite base with a reactive carbon containing composition to form a reactive carbon coated C/C composite; followed by (b) applying a silicon containing composition to the reactive carbon coated C/C composite to form a bi-layered C/C composite; (c) heating the bi-layered C/C composite to at least the melting point of silicon to form the silicon carbide coated C/C composite; and optionally (d) applying a retardant solution to the silicon carbide coated C/C composite wherein the retardant solution comprises the ions formed from the combination of the following: 10-80 wt % H O and 90-20 wt % H PO.