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US 11,566,203 B2Granted
Sub-stoichiometric metal nitrides
AssigneeUchicago Argonne, LLC
InventorsOsman Levent Eryilmaz, Vanessa DaSilva, Ali Erdemir
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Abstract
A non-stoichiometric nanocomposite coating and method of making and using the coating. The non-stoichiometric nanocomposite coating is disposed on a base material, such as a metal or ceramic; and the nanocomposite consists essentially of a matrix of an alloy selected from the group of Cu, Ni, Pd, Pt and Re which are catalytically active for cracking of carbon bonds in oils and greases and a grain structure selected from the group of borides, carbides and nitrides.
Claims15
A super lubricious apparatus comprising:
- a substrate;
- a nanocomposite coating on the substrate, the nanocomposite consisting essentially of a matrix of a catalytically active element embedded in the matrix, the matrix selected from Cu, Ni, Pd, Pt and Re and mixtures thereof, and non-stoichiometric vanadium nitride grains;
- a hydrocarbon lubricant;
- and
- a carbon film disposed between the nanocomposite coating and the hydrocarbon lubricant.
2 more elements
A method for lubricating materials in wear contact, comprising the steps of:
- providing a base material;
- disposing a non-stoichiometric nanocomposite coating on the base material, the nanocomposite consisting essentially of about 1% to 10% by weight a microstructural matrix of a catalytically active alloy with about 90% to 99% by weight grains embedded in therein, the microstructural matrix selected from the group of Cu, Ni, Pd, Pt and Re and mixtures thereof and vanadium nitride grains;
- disposing an oil on the nanocomposite coating;
- engaging the nanocomposite coating with a surface, the oil disposed therebetween;
- cracking carbon bonds of the oil;
- and
- forming a carbon film disposed between the coating and the layer, thereby lubricating the nanocomposite coating and underlying base material.
4 more elements
Dependencies are inferred from the claim text.