Back to results
US 12,570,583 B2Granted
Hybrid high and low temperature coating
AssigneeHoneywell International Inc.
InventorsMehrad Mehr, Bahram Jadidian
Life of this patent
Estimating the term…
Abstract
A high temperature article includes a carbon/carbon (C/C) composite substrate and a hybrid coating on the C/C composite substrate. The hybrid coating includes a high temperature antioxidant layer on a surface of the C/C composite substrate and a low temperature sealant on a surface of the high temperature antioxidant layer. The low temperature sealant is formed from a glass-forming soluble salt.
Claims12
A method for forming a hybrid coating, comprising:
- forming a high temperature antioxidant coating on a carbon/carbon (C/C) composite substrate via reactive slurry melt infiltration, wherein the high temperature antioxidant coating formed via the reactive slurry melt infiltration includes excess free metal;
- applying a sealant mixture to a surface of the high temperature antioxidant coating, wherein the sealant mixture comprises a glass-forming soluble salt in a solvent;
- and
- removing the solvent to form a low temperature sealant from the glass-forming soluble salt on the high temperature antioxidant coating;
- and
- forming an outer layer of a metal oxide on the high temperature antioxidant coating, wherein the metal oxide is formed from the excess free metal.
3 more elements
Dependencies are inferred from the claim text.