Titanium carbide or tungsten carbide with combustion synthesis to block porosity in C-C brake discs for antioxidation protection

US8383197B2 · kind B2 · utility

Assignees

• HONEYWELL INTERNATIONAL INC. · US
• University of Notre Dame du Lac · US

Inventors

• Mark L. La Forest · Granger, US
• Allen H. Simpson · Buchanan, US
• Slawomir T. Fryska · Granger, US
• Alexander Mukasyan · Granger, US

Key dates

• Filing date: May 28, 2009
• Grant date: Feb 26, 2013
• Expiry date: Apr 17, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2250/0046
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A metal powder is applied to the surface of the area of a carbon-carbon composite brake disc to be protected against migration of antioxidant. The metal powder may be titanium powder or tungsten powder. A chemical reaction between the metal powder and carbon is then initiated by heating the powder-coated brake to the ignition temperature via application of electric current (Joule preheating) or by heating it in a furnace. Upon combustion, the metal particles react with carbon in the composite, forming liquid carbide that flows into pores of the composite brake disc to be protected.