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US 12,595,216 B2Granted
Metal carbide infiltrated C/C composites
AssigneeHoneywell International Inc.
InventorsMehrad Mehr, Bahram Jadidian
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Abstract
An article includes a substrate. The substrate includes at least two phases. The first phase includes a carbon-carbon (C/C) composite. The second phase includes a metal carbide. The second phase is disposed within a plurality of interconnected pores of the first phase, wherein the second phase extends from a surface of the substrate to a depth of at least 300 micrometers below the surface of the substrate.
Claims19
An article comprising:
- a substrate comprising at least two phases, including:
- a first phase comprising a carbon-carbon (C/C) composite having a plurality of interconnected pores with a porosity that is functionally graded in one or more directions;
- and
- a second phase comprising a metal carbide;
- wherein:
- the second phase is disposed within the plurality of interconnected pores of the first phase,
- the second phase extends from a surface of the substrate to a depth of at least about 300 micrometers below the surface of the substrate;
- the plurality of the interconnected pores of the first phase comprise first pores and second pores;
- the first pore of the plurality of interconnected pores of the first phase defines a dimension that is less than about 40 micrometers in one direction, and the second phase substantially fills the first pores;
- and
- the second pore of the plurality of interconnected pores of the first phase defines a dimension that is more than about 40 micrometers in one direction, and the second phase does not substantially fill the second pores;
- and the second pores are substantially sealed by the second phase.
9 more elements
A method of forming an article, the method comprising:
- infiltrating interconnected pores of a substrate with a fluid that comprises a metal, wherein the substrate includes a first phase comprising a carbon-carbon (C/C) composite and plurality of interconnected pores within the first phase;
- and
- reacting carbon of the first phase with the metal to form a second phase comprising a metal carbide which is disposed within the interconnected pores of the first phase, wherein the second phase extends from a surface of the substrate to a depth of at least about 300 micrometers below the surface of the substrate, wherein:
- the C/C composite has the interconnected pores with a porosity that is functionally graded in one or more directions;
- the interconnected pores of the first phase include first pores and second pores;
- reacting carbon of the first phase with the metal to form the second phase comprises substantially filling the first pores of the plurality of interconnected pores of the first phase with the second phase, wherein the first pore defines a dimension that is less than about 40 micrometers in one direction, and
- reacting carbon of the first phase with the metal to form the second phase comprises not substantially filling the second pores of the plurality of interconnected pores of the first phase with the second phase, wherein the second pore defines a dimension that is more than about 40 micrometers in one direction;
- and wherein the second pores are substantially sealed by the second phase.
5 more elements
Dependencies are inferred from the claim text.