Process for reducing oxygen content in thermally sprayed metal c

Details Process for reducing oxygen content in thermally sprayed metal c Process for reducing oxygen content in thermally sprayed metal c

1996-05-31

1998-04-07

Bareford, Katherine A.

Coating processes

Spray coating utilizing flame or plasma heat

Inorganic carbon containing coating, not as steel

427451, 427455, 427456, 427216, C23C 406

Patent

active

057362009

ABSTRACT:
A process for reducing oxygen content in thermally sprayed metal coatings comprises the following steps. A metal powder is provided. The metal powder has a particle size in the range of from about 10 .mu.m to about 500 .mu.m. Carbon is adhered and coated to the metal powder to form a carbon coated metal powder. The carbon is present in the range of from about 0.1% to about 2.0% by weight of the carbon coated metal powder. The carbon coated metal powder is thermally sprayed onto a substrate and a metal coating is deposited on the substrate. The metal coating has a lower oxygen content compared to the oxygen content of the carbon coated metal powder.

REFERENCES:
patent: 4338509 (1982-07-01), Bartuska et al.
patent: 4915987 (1990-04-01), Nara et al.
patent: 5372845 (1994-12-01), Rangaswamy et al.
"Sprayforming By High-Power High-Velocity Plasma Spraying", Scholl et al., 4th National Thermal Spray Conf., Pittsburgh, May 1991.

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