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US 2025/0197302 A1Published application
DENSE AND SELF-HEALING ZrB2-SiC ANTI-OXIDATIVE MULTILAYER COATINGS FOR CARBON/CARBON COMPOSITES
OwnerJose C. Cordeiro, JR., Hema Ramsurn +1inventors
InventorsJose C. Cordeiro, JR., Hema Ramsurn, Michael W. Keller
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Abstract
Disclosed are methods for preparing a carbon/carbon composite having protective layers suitable for precluding oxidative weight loss and self-healing carbon/carbon composites prepared according to the disclosed methods.
Claims37
A carbon/carbon composite comprising:
- a plurality of layers overlaying the carbon/carbon composite wherein a first layer is a pack cementation layer of silicon carbide in direct contact with the carbon/carbon composite;
- a first chemical vapor deposition-silicon carbide layer over the pack cementation layer of silicon carbide, at least a portion of the first chemical vapor deposition-silicon carbide layer intermingling with the pack cementation layer of silicon carbide;
- a first ZrB2-silicon carbide layer overlaying the chemical vapor deposition-silicon carbide layer;
- a second chemical vapor deposition-silicon carbide layer, at least a portion of the second chemical vapor deposition-silicon carbide intermingles with the first ZrB2-silicon carbide layer to provide a first combined ZrB2-silicon carbide and chemical vapor deposition-silicon carbide layer;
- a second ZrB2-silicon carbide layer overlaying the chemical vapor deposition-silicon carbide layer;
- a third chemical vapor deposition-silicon carbide layer, a portion of the third chemical vapor deposition-silicon carbide intermingles with the second ZrB2-silicon carbide layer forming a second combined ZrB2-silicon carbide and chemical vapor deposition-silicon carbide layer wherein a portion of the third chemical vapor deposition-silicon carbide layer is a top layer of chemical vapor deposition-silicon carbide layer.
3 more elements
A carbon/carbon composite comprising:
- a plurality of layers overlaying the carbon/carbon composite wherein a first layer is combined pack cementation layer of silicon carbide in direct contact with the carbon/carbon composite and a first chemical vapor deposition-silicon carbide layer intermingled with the pack cementation layer of silicon carbide
- a first combined ZrB2-silicon carbide and chemical vapor deposition-silicon carbide layer;
- a second combined ZrB2-silicon carbide and chemical vapor deposition-silicon carbide layer overlaying the first combined ZrB2-silicon carbide and chemical vapor deposition-silicon carbide layer;
- a top layer of chemical vapor deposition-silicon carbide layer.
1 more element
A carbon/carbon composite comprising:
- a plurality of layers overlaying the carbon/carbon composite wherein a first layer is a pack cementation layer of silicon carbide in direct contact with the carbon/carbon composite;
- a first chemical vapor deposition-silicon carbide layer over the pack cementation layer of silicon carbide, at least a portion of the first chemical vapor deposition-silicon carbide layer intermingling with the pack cementation layer of silicon carbide;
- a first ZrB2-silicon carbide layer overlaying the chemical vapor deposition-silicon carbide layer;
- and,
- a second chemical vapor deposition-silicon carbide layer, a portion of the second chemical vapor deposition-silicon carbide intermingles with the first ZrB2-silicon carbide layer forming a combined ZrB2-silicon carbide layer and a portion of the second chemical vapor deposition-silicon carbide layer forms a top layer of chemical vapor deposition-silicon carbide layer.
2 more elements
A method of preparing a carbon/carbon composition having a plurality of layers comprising:
- providing a carbon/carbon composite;
- applying a pack cementation layer of silicon carbide;
- applying a first CVD-silicon carbide layer over the pack cementation layer of silicon carbide;
- applying a first ZrB2-silicon carbide layer over the first CVD-silicon carbide layer;
- applying a second layer of CVD-silicon carbide over the first ZrB2-silicon carbide layer such that the second layer of CVD-silicon carbide fills any cracks or pores in the first ZrB2-silicon carbide layer.
2 more elements
A method of preparing a carbon/carbon composition having a plurality of layers comprising:
- providing a carbon/carbon composite;
- applying a pack cementation layer of silicon carbide;
- applying a first CVD-silicon carbide layer over the pack cementation layer of silicon carbide;
- applying a first ZrB2-silicon carbide layer over the first CVD-silicon carbide layer;
- applying a second CVD-silicon carbide layer over the first ZrB2-silicon carbide layer such that the CVD-silicon carbide layer fills any pores or cracks in the first ZrB2-silicon carbide layer;
- applying a second ZrB2-silicon carbide layer over the second CVD-silicon carbide layer;
- applying a top layer of CVD-silicon carbide over the second ZrB2-silicon carbide layer such that the top layer of CVD-silicon carbide fills any cracks or pores in the second ZrB2-silicon carbide layer.
4 more elements
Dependencies are inferred from the claim text.