High-entropy ultra-high temperature ceramic (he-uhtc) coatings and deposition methods thereof
AssigneeThe Florida International University Board of Trustees
InventorsAmbreen Nisar, Arvind Agarwal, Cheng Zhang
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Abstract
High-entropy ultra-high temperature ceramics (HE-UHTC) coatings deposited on substrates, as well methods for depositing the HE-UHTC coatings on the substrates, are provided. An HE-UHTC electrode can be fabricated via spark plasma sintering (SPS) and then a thin coating of the HE-UHTC can be deposited in a precision-controlled manner on a substrate via an electro-spark deposition process.
Claims20
(canceled)
The compound according to claim 5, the substrate being steel, graphite, a nickel-based alloy, or a titanium-based alloy.
The compound according to claim 5, the substrate being graphite, C/C, or C/SiC.
The compound according to claim 5, the HE-UHTC comprising an equimolar composition of at least two ultra-high temperature ceramics (UHTCs).
A compound, comprising:
- an electrically conductive substrate;
- and
- a coating of a high-entropy ultra-high temperature ceramic (RE-UHTC) disposed directly on and in physical contact with the substrate,
- the coating of the HE-UHTC having a thickness of less than 100 micrometers (μm).
(canceled)
A compound, comprising:
- an electrically conductive substrate;
- and
- a coating of a high-entropy ultra-high temperature ceramic (RE-UHTC) disposed directly on and in physical contact with the substrate,
- the substrate being steel, graphite, a nickel-based alloy, a titanium-based alloy, C/C, or C/SiC,
- the RE-UHTC comprising an equimolar composition of at least two ultra-high temperature ceramics (UHTCs).
- the coating of the HE-UHTC having a thickness in a range of from 0.1 micrometers (μm) to 30 μm,
- the coating of the RE-UHTC comprising no oxidation or phase transformation, and
- the coating of the HE-UHTC being thermally stable up to a temperature of at least 2,500° C.
Dependencies are inferred from the claim text.