Luminescent cold spray coating and method
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsFrederick Lancaster, Jason Shaw, Troy Townsend
Life of this patent
Estimating the term…
Abstract
A luminescent cold spray coating and precursor feed powder comprising of a metallic matrix, non-metallic composite particles dispersed within the metallic matrix at about 0-60% by volume, and, luminescent material disposed within the matrix. A method for preparing luminescent metal coating, the method comprising the steps of accelerating metal powder, a luminescent material, and a carrier gas through a convergent-divergent Laval nozzle at a speed in the range of about 300 to 1200 m/s onto a work product.
Claims2
A luminescent cold spray coating comprising:
- a metallic matrix comprising a metal powder, wherein the metal powder is chosen from the group consisting of copper, zinc, steel, titanium, tungsten, cobalt, carbide, indium, gallium, and nickel;
- non-metallic composite particles dispersed within the metallic matrix at 0-60% by volume;
- and,
- luminescent material disposed within the metallic matrix at 1-50% by volume, the luminescent material is chosen from the group consisting of SrAl2O4:Eu2+Dy3+, SrAl12O19:Eu2+Dy3+, SrCaAl2O4:Eu2+Dy3+, SrBaAl2O4:Eu2+Dy3+, Y2O3:Eu3+, and BaMg2Al16O27:Eu2+, wherein the luminescent material has a diameter of 5-200 μm, wherein the metal powder has a diameter of 5-75 μm, wherein further the luminescent cold spray coating is visible to the unaided eye.
A luminescent cold spray feed powder comprising:
- a metal powder chosen from the group consisting of copper, zinc, steel, titanium, tungsten, cobalt, carbide, indium, gallium, and nickel;
- non-metallic composite particles dispersed within the metal powder at 0-60% by volume;
- and,
- luminescent material disposed within the metal powder at 1-50% by volume;
- wherein the luminescent material has a diameter of 5-200 μm, wherein the metal powder has a diameter of 5-75 μm, the luminescent material is chosen from the group consisting of SrAl2O4:Eu2+Dy3+, SrAl12O19:Eu2+Dy3+, SrCaAl2O4:Eu2+Dy3+, SrBaAl2O4:Eu2+Dy3+, Y2O3:Eu3+, and BaMg2Al16O27:Eu2+.
Dependencies are inferred from the claim text.