EP 4192635 A1 20230614 - PROTECTION AGAINST OXIDATION OR CORROSION OF A HOLLOW PART MADE OF A SUPERALLOY
Title (en)
PROTECTION AGAINST OXIDATION OR CORROSION OF A HOLLOW PART MADE OF A SUPERALLOY
Title (de)
SCHUTZ GEGEN OXIDATION ODER KORROSION EINES HOHLKÖRPERS AUS EINER SUPERLEGIERUNG
Title (fr)
PROTECTION CONTRE L'OXYDATION OU LA CORROSION D'UNE PIECE CREUSE EN SUPERALLIAGE
Publication
Application
Priority
- FR 2008333 A 20200806
- FR 2021051444 W 20210805
Abstract (en)
[origin: WO2022029388A1] The present document relates to a protection method, for protecting at least one hollow internal region (13, 14) of a turbomachine part (2), made of a superalloy, from oxidation and/or corrosion, said at least one hollow internal region having been formed using at least one core made of ceramic material bounded by a surrounding external surface (26), characterized in that, prior to adding the superalloy around the ceramic core, said external surface is coated with a material comprising at least: – a nanometre-scale layer of hafnium (Hf) and/or – a micrometer-scale layer of platinum (Pt), or – a mixture of at least hafnium and platinum.
IPC 8 full level
B22C 9/10 (2006.01); B22C 9/12 (2006.01); B22C 9/24 (2006.01); B22C 23/02 (2006.01); B22D 19/08 (2006.01); B22D 27/18 (2006.01)
CPC (source: EP US)
B22C 3/00 (2013.01 - EP); B22C 9/10 (2013.01 - EP); B22C 9/12 (2013.01 - EP); B22C 23/02 (2013.01 - EP); B22D 19/08 (2013.01 - EP); B22D 27/18 (2013.01 - EP); C23F 11/18 (2013.01 - US); F01D 5/288 (2013.01 - US); F05D 2230/90 (2013.01 - US); F05D 2300/132 (2013.01 - US); F05D 2300/135 (2013.01 - US); F05D 2300/143 (2013.01 - US); F05D 2300/15 (2013.01 - US); F05D 2300/175 (2013.01 - US); F05D 2300/222 (2013.01 - US); Y02T 50/60 (2013.01 - EP)
Citation (search report)
See references of WO 2022029388A1
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022029388 A1 20220210; CN 115989102 A 20230418; EP 4192635 A1 20230614; FR 3113254 A1 20220211; FR 3113254 B1 20221125; US 2023304409 A1 20230928
DOCDB simple family (application)
FR 2021051444 W 20210805; CN 202180052990 A 20210805; EP 21762511 A 20210805; FR 2008333 A 20200806; US 202118040767 A 20210805