Method for coating a substrate surface and coated product
AssigneeH. C. Starck GmbH
InventorsStefan Zimmermann, Uwe Papp, Heinrich Kreye, Tobias Schmidt
Life of this patent
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Abstract
Disclosed is a process for the reprocessing or production of a sputter target or an X-ray anode wherein a gas flow forms a gas/powder mixture with a powder of a material chosen from the group consisting of niobium, tantalum, tungsten, molybdenum, titanium, zirconium, mixtures of two or more thereof and alloys thereof with at least two thereof or with other metals, the powder has a particle size of 0.5 to 150 μm, wherein a supersonic speed is imparted to the gas flow and the jet of supersonic speed is directed on to the surface of the object to be reprocessed or produced.
Claims28
A method of applying coatings to a surface, the method comprising:
- cold-spraying a gas flow at supersonic speed onto a surface of an object, thereby forming a coating on the surface, the gas flow comprising a mixture of gas with a powder of a bulk material selected from the group consisting of:
- a) alloys, pseudo alloys, and powder mixtures of Nb, Ta, W, or Mo with
- (i) each other, or with Ti or Zr, or
- (ii) 2-30 wt. % of Co, Ni, Rh, Pd, Pt, Cu, Ag or Au;
- or
- b) binary alloys, binary pseudo alloys, and binary powder mixtures of 2-50 wt. % Nb, Ta, W, or Mo with each other or with Ti or Zr,
- wherein (i) the powder has a particle size of from 0.5 to 150 μm and an oxygen content of less than 1000 ppm, and (ii) the coating has a density of at least 97% of a density of the bulk material.
A method of applying coatings to a surface, the method comprising:
- cold-spraying a gas flow at supersonic speed onto a surface of an object, thereby forming a coating on the surface, the gas flow comprising a mixture of gas with a powder of a bulk material selected from the group consisting of:
- a) alloys, pseudo alloys, and powder mixtures of Nb, Ta, W, or Mo with
- (i) each other, or with Ti or Zr, or
- (ii) 2-30 wt. % of Co, Ni, Rh, Pd, Pt, Cu, Ag or Au;
- or
- b) binary alloys, binary pseudo alloys, and binary powder mixtures of 2-50 wt. % Nb, Ta, W, or Mo with each other or with Ti or Zr,
- wherein (i) the powder has a particle size of from 0.5 to 150 μm and an oxygen content of less than 1000 ppm, (ii) the coating has a density of at least 97% of a density of the bulk material, and (iii) cold-sprayed layers are formed/produced with deposition rates of more than 90%.
Dependencies are inferred from the claim text.