US 12,448,679 B2
Oxidation protection systems and methods
Atta Khan, Colorado Springs, CO (US)
Assigned to GOODRICH CORPORATION, Charlotte, NC (US)
Filed by GOODRICH CORPORATION, Charlotte, NC (US)
Filed on Jul. 13, 2023, as Appl. No. 18/352,186.
Application 18/352,186 is a division of application No. 16/432,029, filed on Jun. 5, 2019, granted, now 11,739,413.
Prior Publication US 2023/0357917 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C23C 14/06 (2006.01); B64C 25/42 (2006.01); F16D 65/00 (2006.01)
CPC C23C 14/0635 (2013.01) [B64C 25/42 (2013.01); F16D 65/0025 (2013.01)] 7 Claims
 
1. A method of forming a B4C layer as a component of an oxidation protection system on a carbon-carbon composite material, the method comprising:
forming a liquid mixture comprising a boron-compound and a phenolic resin, wherein forming the liquid mixture comprises forming a solution by mixing the boron-compound into the phenolic resin such that the boron-compound is a solute and the phenolic resin is a solvent and wherein the boron-compound comprising at least one of boric acid (H3BO3) and boria (B2O3); and
applying the liquid mixture on the carbon-carbon composite material.