Method for the application of coatings of oxide dispersion strengthened metals by laser powder injection

Patent 5449536 Issued on September 12, 1995. Estimated Expiration Date:

December 18, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Flame spray oxidation and corrosion resistant superalloys
Patent #: 4101713
Issued on: 07/18/1978
Inventor: Hirsch , et al.

Laser spraying
Patent #: 4200669
Issued on: 04/29/1980
Inventor: Schaefer , et al.

Apparatus for application of metallic coatings to metallic substrates
Patent #: 4300474
Issued on: 11/17/1981
Inventor: Livsey

Alumina-yttria mixed oxides in dispersion strengthened high temperature alloy powders
Patent #: 4427447
Issued on: 01/24/1984
Inventor: Ramanarayanan , et al.

Method for generating hard, wear-proof surface layers on a metallic material
Patent #: 4537793
Issued on: 08/27/1985
Inventor: Kehrer , et al.

Method for melt-coating a surface
Patent #: 4615903
Issued on: 10/07/1986
Inventor: Miller

Method of carrying out a treatment on metal pieces with the addition of an added material and with the use of a power laser
Patent #: 4644127
Issued on: 02/17/1987
Inventor: La Rocca

Method of applying a protective layer to an oxide dispersion hardened superalloy
Patent #: 4675204
Issued on: 06/23/1987
Inventor: Nicoll , et al.

Laser spray nozzle and method
Patent #: 4724299
Issued on: 02/09/1988
Inventor: Hammeke

Method for diffusion bonding of metals and alloys using thermal spray deposition
Patent #: 4905886
Issued on: 03/06/1990
Inventor: Kennedy, et al.

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Inventors

Application

No. 995420 filed on 12/18/1992

US Classes:

427/597, Metal or metal alloy containing coating material applied219/121.85, Method427/191, Metal particles427/554Laser

Examiners

Primary: Owens, Terry J.

Foreign Patent References

60-238472 JP 11/25/1985
2-111863 JP 04/25/1990
4-28883 JP 01/25/1992

International Classes

B05D 001/12
B05D 003/06

Abstract

An oxide dispersion strengthened metal coating is applied to a substrate by positioning a laser spray apparatus over the substrate such that a laser in the spray apparatus forms a hot zone at a distance above the substrate sufficient to prevent the substrate from melting. An oxide dispersion strengthened metal powder coating material is injected into the hot zone to heat the coating material such that it will be in a plastic state when it impinges against the substrate. The coating material is then caused to impinge against the substrate to form a uniform coating on the substrate. The microstructure of the coating on the substrate is substantially identical to the coating material's microstructure before it is injected into the hot zone.