Patent · US Expired

Gas turbine blade

US6887044B2 · kind B2 · utility

7Cited by

6References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Robert Fleck · Wiesendorf, DE
Thomas Jansing · Erlangen, DE
Eckart Schumann · Wetter (Ruhr), DE

Key dates

Filing date	Sep 25, 2003
Grant date	May 3, 2005
Priority date	—
Expiry date	Sep 25, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/265
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Disclosed is a gas turbine blade (1) having a ceramic heat-insulating layer (17). The ceramic heat-insulating layer (17) 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 (17) to be adapted in a particularly suitable manner to a metallic base body (15) of the gas turbine blade (1). The ceramic heat-insulating layer (17) also has a porosity which is greater that 3 vol. %, thereby guaranteeing sufficiently low heat conductivity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.