Patent · US Expired

Process for treating a coated gas turbine part, and coated gas turbine part

US6773753B2 · kind B2 · utility

1Cited by

13References

10Claims

0Family size

Assignee

ALSTOM Technology Ltd · CH

Inventors

Gordon Anderson · Baden, CH
Reinhard Fried · Nussbaumen, CH
Michael Loetzerich · Wutöschingen, DE
Markus Oehl · Waldshut-Tiengen, DE
Stefan Schlechtriem · Berlin, DE
Joerg Stengele · Niederrohrdorf, CH

Key dates

Filing date	Aug 5, 2002
Grant date	Aug 10, 2004
Priority date	—
Expiry date	Aug 5, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention discloses a process for treating a ceramic protective layer (3) which is applied to the surface (2) of a gas turbine part (1). The roughness of the ceramic protective layer (3) is reduced at at least one first location (5), and the original roughness is retained at at least one second location (6). The roughness is advantageously retained at locations (6) on a turbine blade or vane (1) which are at risk of detachment, while the roughness of the remaining surface (2) is reduced in order to reduce the heat transfer to the surrounding hot-gas flow.

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