Coatings that reduce friction and wear

A coated structure, comprising a surface of the structure having a tribocatalytically-active coating disposed on the surface, wherein the tribocatalytically-active coating comprises a matrix having at least one type of catalytically active element, wherein the matrix is a CoP matrix or a NiP matrix, wherein the catalytically active element is a nanoparticle having a longest dimension of about 3 to 10 nanometers, wherein a hydrocarbon-rich material in contact with the tribocatalytically-active coating, wherein the hydrocarbon-rich material is a hydrocarbon in a liquid state.

A coated structure, comprising a surface of the structure having a tribocatalytically-active coating disposed on the surface, wherein the tribocatalytically-active coating comprises a matrix having at least one type of catalytically active element, wherein the matrix is a CoP matrix or a NiP matrix, wherein the catalytically active element is a nanoparticle having a longest dimension of about 3 to 10 nanometers, wherein a hydrocarbon-rich material in contact with the tribocatalytically-active coating, wherein the hydrocarbon-rich material is a hydrocarbon in a gaseous state.

A method of making the coated structure, comprising:

• introducing an uncoated structure having a surface to an electrolyte including a mixture of metal-based material, a phosphorus based-material, and a catalytically active element based-material, wherein the metal-based material is a cobalt-based material selected from CoCl2 or CoSO4, wherein the phosphorus-based material is H3PO4 or NaH2PO2;
• and
• forming a tribocatalytically-active coating on the surface by electrodeposition of the mixture, wherein the tribocatalytically-active coating comprises a matrix having at least one type of catalytically active element, wherein the matrix is a COP matrix, wherein the catalytically active element is a nanoparticle having a longest dimension of about 3 to 10 nanometers.

A method of making the coated structure, comprising:

• introducing an uncoated structure having a surface to an electrolyte including a mixture of metal-based material, a phosphorous based-material, and a catalytically active element based-material, wherein the metal-based material is a cobalt-based material or a nickel-based material;
• and
• forming a tribocatalytically-active coating on the surface by electrodeposition of the mixture, wherein the tribocatalytically-active coating comprises a matrix having at least one type of catalytically active element, wherein the matrix is a CoP matrix or a NiP matrix, wherein the catalytically active element is a nanoparticle having a longest dimension of about 3 to 10 nanometers, wherein the type of catalytically active element is selected from Ni, Cu, Ir, Pt, Pd, Ru, and Mo wherein the catalytically active element is about 5 to 30 weight percent of the tribocatalytically-active coating.