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:
Oct. 11, 2005
Filed:
Jun. 16, 2003
Lawrence Bernard Kool, Clifton Park, NY (US);
Kenneth Burrell Potter, Simpsonville, SC (US);
William Randall Thompson, Greenville, SC (US);
David Carr, Taylors, SC (US);
Kiyokazu Watanabe, Yokosuka, JP;
Minoru Ishida, Chiba-Ken, JP;
Kazuharu Hattori, Tokyo, JP;
Lawrence Bernard Kool, Clifton Park, NY (US);
Kenneth Burrell Potter, Simpsonville, SC (US);
William Randall Thompson, Greenville, SC (US);
David Carr, Taylors, SC (US);
Kiyokazu Watanabe, Yokosuka, JP;
Minoru Ishida, Chiba-Ken, JP;
Kazuharu Hattori, Tokyo, JP;
General Electric Company, Niskayuna, NY (US);
Abstract
A method for removing a chromide coating from the surface of a substrate is described. The coating is treated with a composition which includes an acid having the formula HAF, where 'A' can be Si, Ge, Ti, Zr, Al, or Ga; and x is 1–6. An exemplary acid is hexafluorosilicic acid. The composition may also include a second acid, such as phosphoric acid or nitric acid. In some instances, a third acid is employed, such as hydrochloric acid. A related repair method for replacing a worn or damaged chromide coating is described. The coating is often applied to portions of turbine engine components made from superalloy materials.