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:
Aug. 26, 2003
Filed:
Mar. 14, 2001
Werner Stamm, Mülheim, DE;
Siemens Akteingesellschaft, Munich, DE;
Abstract
Product having a layer which protects against corrosion, and process for producing a layer which protects against corrosion. The invention relates to a product ( ), in particular a gas-turbine blade ( ), having a metallic basic body ( ) to which a protective layer ( ) for protecting against corrosion is bonded. The protective layer ( ) has an inner layer ( ) of a first MCrAlY alloy and an outer layer ( ) having a second MCrAlY alloy, which is bonded to the inner layer ( ). The second MCrAlY alloy is predominantly in the &ggr;-phase. The invention also relates to a process for producing a protective layer ( ) in which the outer layer ( ) is produced by re-melting a region of the inner layer ( ) or by deposition of an MCrAlY alloy from a liquid phase.