The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2007
Filed:
Jul. 06, 2004
Terence B. Walker, South Bend, IN (US);
Manuel G. Koucouthakis, Granger, IN (US);
Michelle L. Shreve, South Bend, IN (US);
Laurie A. Booker, South Bend, IN (US);
Terence B. Walker, South Bend, IN (US);
Manuel G. Koucouthakis, Granger, IN (US);
Michelle L. Shreve, South Bend, IN (US);
Laurie A. Booker, South Bend, IN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Method of improving humidity resistance in a coated article () comprising a carbon-carbon composite component (), a graphite component (), or a ceramic matrix composite component based on carbon fibers and/or graphite (). The component () is preferably configured as an aircraft landing system brake disc. The method includes the steps of: (A) providing a carbon-carbon composite component (), a graphite component (), or a ceramic matrix composite component based on carbon fibers and/or graphite (); (B) covering the component () with a phosphorus-containing antioxidant undercoating () having a thickness of approximately 1–10 mil; and (C) covering the resulting undercoated component () with a boron-containing glass overcoating () having a thickness of approximately 1–10 mil. The overcoating includes 20–50 wt-% alkali or alkaline earth metal silicates, 3–25 wt-% alkali metal hydroxide, up to 10 wt-% boron nitride, and one or both of 5–40 wt-% elemental boron and 5–40 wt-% boron carbide. The overcoating is substantially free of phosphoric acid and phosphates. Also, articles coated with the specified undercoating/overcoating combinations.