US 12,344,564 B2
Oxidation protection with improved water resistance for composites
Jun Nable, Hamden, CT (US); Steven A. Poteet, Ashland, MA (US); Xia Tang, West Hartford, CT (US); and James T. Beals, West Hartford, CT (US)
Assigned to GOODRICH CORPORATION, Charlotte, NC (US)
Filed by GOODRICH CORPORATION, Charlotte, NC (US)
Filed on Jan. 7, 2022, as Appl. No. 17/571,083.
Prior Publication US 2023/0219859 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); C04B 35/563 (2006.01); C04B 35/583 (2006.01); C04B 41/00 (2006.01); C04B 41/50 (2006.01); C04B 41/52 (2006.01); C04B 41/86 (2006.01); C04B 41/89 (2006.01)
CPC C04B 41/009 (2013.01) [C04B 35/563 (2013.01); C04B 35/583 (2013.01); C04B 41/0072 (2013.01); C04B 41/5022 (2013.01); C04B 41/5035 (2013.01); C04B 41/52 (2013.01); C04B 41/86 (2013.01); C04B 41/89 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/365 (2013.01); C04B 2235/3804 (2013.01); C04B 2235/3821 (2013.01); C04B 2235/386 (2013.01); C04B 2235/447 (2013.01); C04B 2235/9684 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An oxidation protection system disposed on an outer surface of a substrate, the oxidation protection system, comprising:
a boron-glass layer disposed over the outer surface, the boron-glass layer comprising a boron compound, a first glass compound, and a first glass former, wherein the boron compound comprises a mixture of boron carbide powder and boron nitride powder, the boron nitride powder being a greater weight percentage of the boron compound than the boron carbide powder; and
a silicon-glass layer disposed on the boron-glass layer, the silicon-glass layer comprising a silicon compound, a second glass compound, and a second glass former.