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:
Dec. 19, 2006
Filed:
May. 18, 2004
Warren Arthur Nelson, Clifton Park, NY (US);
Jon Conrad Schaeffer, Greenville, SC (US);
Sharon Trombly Swede, Easley, SC (US);
David Vincent Bucci, Simpsonville, SC (US);
Joseph Debarro, Greer, SC (US);
Terry Howard Strout, Simpsonville, SC (US);
Tyrone Robert Mortensen, Greenville, SC (US);
Warren Arthur Nelson, Clifton Park, NY (US);
Jon Conrad Schaeffer, Greenville, SC (US);
Sharon Trombly Swede, Easley, SC (US);
David Vincent Bucci, Simpsonville, SC (US);
Joseph Debarro, Greer, SC (US);
Terry Howard Strout, Simpsonville, SC (US);
Tyrone Robert Mortensen, Greenville, SC (US);
General Electric Company, Schenectady, NY (US);
Abstract
A bi-layer bond coating for use on metal alloy components exposed to hostile thermal and chemical environment, such as a gas turbine engine, and the method for applying such coatings. The preferred coatings include a bi-layer bond coat applied to the metal substrate using high velocity oxy-fuel (HVOF) thermal spraying. Bi-layer bond coatings in accordance with the invention consist of a dense first inner layer (such as iron, nickel or cobalt-based alloys) that provides oxidation protection to the metal substrate, and a second outer layer having controlled porosity that tends to promote roughness, mechanical compliance, and promotes adherence of the thermal barrier coating (TBC). Preferably, the outer, less dense layer of the bi-layer bond coat is formed from a mixture of metallic powder and polyester to adjust and control the porosity, but without sacrificing mechanical compliance.