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US 2024/0376623 A1Published application
Metal coated articles comprising a refractory metal region and a platinum-group metal region, and related methods
AssigneeBattelle Energy Alliance, LLC
InventorPrabhat K. Tripathy
Life of this patent
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Abstract
A metal coated article includes a platinum-group metal region adjacent a refractory metal region, which is adjacent a substrate comprising an inorganic material. A refractory metal carbide layer is adjacent the substrate and the refractory metal layer is adjacent the refractory metal carbide layer. The platinum-group metal region comprises a refractory metal/platinum-group metal layer and a platinum-group metal layer. Related methods are also disclosed.
Claims20
A method of forming a metal coated article, comprising:
- forming a refractory metal region on a boron-doped diamond substrate, wherein forming the refractory metal region comprises:
- depositing a refractory metal from a functional electrolyte in an alkali halide auxiliary electrolyte bath, onto the boron-doped diamond substrate to form a refractory metal layer;
- and
- converting a portion of the refractory metal layer to a refractory metal carbide layer, while a portion of the refractory metal layer remains an unreacted refractory metal, the refractory metal layer on the refractory metal carbide layer;
- forming a platinum-group metal region on the refractory metal region, wherein forming the platinum-group metal region comprises:
- depositing a platinum-group metal from a functional electrolyte in an alkali halide auxiliary electrolyte bath, onto the refractory metal layer to form a platinum-group metal layer;
- and
- converting a portion of the platinum-group metal layer to a platinum-group metal, refractory metal transition layer between the platinum-group metal layer and the refractory metal layer, the platinum-group metal layer comprising an exterior coating of the metal coated article.
5 more elements
A method of forming an alloy, comprising:
- dissolving an ilmenite concentrate (FeO·TiO2) in an electroplating system:
- comprising:
- a crucible;
- a metal salt electrolyte in the crucible;
- a working electrode immersed in the metal salt electrolyte;
- a reference electrode immersed in the metal salt electrolyte;
- and
- a counter electrode immersed in the metal salt electrolyte, the counter electrode comprising:
- a boron-doped diamond substrate;
- a refractory metal carbide layer on the boron-doped diamond substrate;
- a refractory metal layer on the refractory metal carbide layer;
- and
- a platinum-group layer on a platinum-group metal/refractory metal layer and on the refractory metal carbide layer;
- and
- applying a voltage and a current between the working electrode and the reference electrode, to co-deposit an iron-titanium alloy on a body connected to the working electrode.
12 more elements
A method of forming a metal coated article, comprising:
- forming a refractory metal region on a boron-doped diamond substrate, the refractory metal region having a thickness of from about 10 micrometers to about 20 micrometers, wherein forming the refractory metal region comprises:
- depositing a refractory metal from a functional electrolyte in an alkali halide auxiliary electrolyte bath, onto the boron-doped diamond substrate to form a refractory metal layer;
- and
- converting a portion of the refractory metal layer to a refractory metal carbide layer, while a portion of the refractory metal layer remains an unreacted refractory metal, the refractory metal layer on the refractory metal carbide layer;
- forming a platinum-group metal region on the refractory metal region, wherein forming the platinum-group metal region comprises:
- depositing a platinum-group metal from a functional electrolyte in an alkali halide auxiliary electrolyte bath, onto the refractory metal layer to form a platinum-group metal layer;
- and
- converting a portion of the platinum-group metal layer to a platinum-group metal, refractory metal transition layer between the platinum-group metal layer and the refractory metal layer, the platinum-group metal layer comprising an exterior coating of the metal coated article.
5 more elements
Dependencies are inferred from the claim text.