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. 17, 2013
Filed:
Jul. 27, 2009
Stephen J. Tuppen, Derby, GB;
Daniel Clark, Derby, GB;
Alan S. Wood, Derby, GB;
Rolls-Royce, PLC, London, GB;
Abstract
A method of locally repairing an aluminide coating () on a gas turbine engine nozzle guide vane () or a turbine blade (B) comprises removing a damaged portion of the aluminide coating () from a portion () of the surface of the article. Any oxidised layer () is removed from the portion () of the surface of the article. Stoichiometric amounts of nickel and aluminium are placed on the portion () of the surface of the article using at least one foil (). The stoichiometric amounts of nickel and aluminium are heat treated to form an aluminide patch coating (B) on the portion () of the surface of the article and to bond the aluminide patch coating (B) to the portion () of the surface of the article and to the aluminide coating () surrounding the aluminide patch coating (B). The advantage is that the aluminide coating () surrounding the aluminide patch coating (B) is not over aluminised.