Global Patent Index - EP 2631325 A2

EP 2631325 A2 20130828 - Coating and coating method for gas turbine component

Title (en)

Coating and coating method for gas turbine component

Title (de)

Beschichtung und Beschichtungsverfahren für Gasturbinenkomponente

Title (fr)

Revêtement et procédé de revêtement pour composant de turbine à gaz

Publication

EP 2631325 A2 20130828 (EN)

Application

EP 13155956 A 20130220

Priority

US 201261633935 P 20120221

Abstract (en)

The present invention provides a protective coating for a gas turbine blade or other component wherein the duplex coating includes an aluminum-bearing coating, such as a diffusion aluminide, formed on a first, relatively higher temperature region of the blade/component and a later-applied chromium-bearing diffusion coating formed on an adjacent relatively lower temperature region of the blade/component subject to hot corrosion in service. The chromium-bearing coating is applied after the aluminum-bearing coating by masking that coating and depositing a metallic chromium coating on the adjacent region followed by diffusing the chromium into the blade/component alloy to form a chromium-enriched diffusion coating thereon.

IPC 8 full level

C23C 10/00 (2006.01); C23C 10/02 (2006.01); C23C 10/18 (2006.01); C23C 10/60 (2006.01)

CPC (source: EP US)

C23C 10/02 (2013.01 - EP US); C23C 10/58 (2013.01 - EP US); C25D 3/04 (2013.01 - EP); C25D 5/022 (2013.01 - EP US); C25D 5/12 (2013.01 - EP US); C25D 5/44 (2013.01 - EP); C25D 5/50 (2013.01 - EP); C25D 13/02 (2013.01 - EP US); C25D 13/12 (2013.01 - EP US); C25D 13/16 (2013.01 - US); F01D 5/288 (2013.01 - EP US); F01D 5/3007 (2013.01 - EP); F05D 2230/31 (2013.01 - EP); F05D 2300/121 (2013.01 - EP); F05D 2300/132 (2013.01 - EP)

Citation (applicant)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2631325 A2 20130828; EP 2631325 A3 20170809; JP 2013216968 A 20131024; JP 6126852 B2 20170510; US 2016010472 A1 20160114

DOCDB simple family (application)

EP 13155956 A 20130220; JP 2013018304 A 20130201; US 201313815152 A 20130204