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. 18, 2015
Filed:
Dec. 12, 2006
Sharad Chandra, Oberhausen, DE;
Norbert Czech, Dorsten, DE;
Sharad Chandra, Oberhausen, DE;
Norbert Czech, Dorsten, DE;
MAN Diesel & Turbo SE, Augsburg, DE;
Abstract
A method is provided for coating a hollow, internally cooled blade () of a gas turbine, in which method an outer coating () comprising an MCrAlY-based bonding layer () and a ceramic thermal barrier layer () of zirconium oxide is applied to the base material () of the blade () on the outer side of the blade () and an inner coating () comprising a Cr diffusion layer () is applied to the base material () of the blade () on the inner side of the blade (). The MCrAlY-based bonding layer () is thereby applied to the finished blade (). At the same time, along with the inner coating (), the Cr diffusion layer () is also applied to the MCrAlY-based bonding layer () of the outer coating () by chemical vapor deposition. Subsequently, an Al diffusion layer () and an outer brittle Al build-up layer are applied by chemical vapor deposition to the bonding layer () coated with the Cr diffusion layer (). After that, the outer brittle Al build-up layer is removed by an abrasive treatment and the ceramic thermal barrier layer () is applied to the Al diffusion layer ().