The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 1998
Filed:
May. 31, 1996
M Brad Beardsley, Laura, IL (US);
Gary L Biltgen, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A method for reducing oxygen content in metal coatings deposited by gas stabilized plasma spray techniques comprises the following steps. A metal powder is provided. Carbon is adhered and coated to the metal powder and a carbon coated metal powder is formed. A primary gas is provided to a plasma spray gun at a flow rate in the range of about 30-80 liter/min. A carrier gas is also provided to the plasma spray gun at a flow rate in the range of about 4-8 liter/min. The carbon coated metal powder is provided to the plasma gun at a flow rate in the range of about 30-85 gms/min. The plasma spray gun is positioned at a stand-off distance in the range of about 100-175 mm from a substrate. The plasma spray gun is energized with power in the range of about 28-42 kW. The carbon coated metal powder is sprayed onto the substrate and a metal coating having an oxygen content at least 20% by weight less than an oxygen content of the metal powder, is deposited.