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:
May. 03, 2005
Filed:
Sep. 25, 2003
Robert Fleck, Adelsdorf, DE;
Thomas Jansing, Erlangen, DE;
Eckart Schumann, Muelheim A.D. Ruhr, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
Disclosed is a gas turbine blade () having a ceramic heat-insulating layer (). The ceramic heat-insulating layer () consists of 10-95% wt. % magnesium aluminate, 5-90 wt. % magnesium oxide and 0-20 wt. % aluminum oxide. Magnesium oxide particles are incorporated into a matrix made of spindle-shaped magnesium aluminate, enabling the thermal expansion coefficient of the ceramic heat-insulating layer () to be adapted in a particularly suitable manner to a metallic base body () of the gas turbine blade (). The ceramic heat-insulating layer () also has a porosity which is greater that 3 vol. %, thereby guaranteeing sufficiently low heat conductivity.