DE10335406A1 - Method of repairing thermal barrier coatings with local damage - Google Patents
Method of repairing thermal barrier coatings with local damage Download PDFInfo
- Publication number
- DE10335406A1 DE10335406A1 DE10335406A DE10335406A DE10335406A1 DE 10335406 A1 DE10335406 A1 DE 10335406A1 DE 10335406 A DE10335406 A DE 10335406A DE 10335406 A DE10335406 A DE 10335406A DE 10335406 A1 DE10335406 A1 DE 10335406A1
- Authority
- DE
- Germany
- Prior art keywords
- thermal barrier
- barrier coating
- local damage
- electrophoresis
- insulation layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/20—Pretreatment
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/02—Electrophoretic coating characterised by the process with inorganic material
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Paints Or Removers (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zum Reparieren von Wärmedämmschichten mit auf der Oberfläche der Wärmedämmschicht vorhandenen lokalen Beschädigungen. Gemäß der Erfindung werden die lokalen Beschädigungen auf der Oberfläche der Wärmedämmschicht mittels elektrophoretischer Abscheidung von Wärmedämmschichtmaterial aufgefüllt.The invention relates to a method for repairing thermal barrier coatings with local damage present on the surface of the thermal barrier coating. According to the invention, the local damage on the surface of the thermal barrier coating is filled by means of electrophoretic deposition of thermal barrier coating material.
Description
Die Erfindung betrifft ein Verfahren zum Reparieren von Wärmedämmschichten mit lokalen Beschädigungen gemäß dem Oberbegriff des Patentanspruch 1.The The invention relates to a method for repairing thermal barrier coatings with local damage according to the generic term of claim 1.
Ein
bekanntes Verfahren zur Reparieren von Wärmedämmschichten mit auf der Oberfläche der Wärmedämmschicht
vorhandenen lokalen Beschädigungen
wird in
Ein Nachteil dieses Verfahrens ist, dass die Verbindungsstellen der keramischen Repairschicht mit der ursprünglichen Wärmedämmschicht eine ungenügende Standfestigkeit aufweist.One Disadvantage of this method is that the joints of the ceramic repair layer with the original thermal barrier coating insufficient stability having.
Es ist somit Aufgabe der Erfindung ein neues Verfahren anzugeben, mit dem es möglich ist, lokale Beschädigungen auf der Oberfläche einer Wärmedämmschicht mit hoher Standfestigkeit zu reparieren.It is therefore an object of the invention to provide a new method, with that is possible is, local damage on the surface a thermal barrier coating to repair with high stability.
Diese Aufgabe wird mit dem Verfahren gemäß Patentanspruch 1 gelöst. Vorteilhafte Ausführung der Erfindung sind Gegenstand von Unteransprüchen.These Task is solved by the method according to claim 1. advantageous execution The invention are the subject of subclaims.
Gemäß der Erfindung werden die lokalen Beschädigungen auf der Oberfläche des Wärmedämmschicht mittels elektrophoretischer Abscheidung von Wärmedämmschichtmaterial aufgefüllt.According to the invention become the local damages on the surface the thermal barrier coating filled by means of electrophoretic deposition of thermal barrier coating material.
In dem erfindungsgemäßen Verfahren wird die beschädigte Stelle, welche auch als Kaviation bezeichnet wird, in der Wärmedämmschicht vorteilhaft zunächst einem elektrochemischen Prozeß unterzogen. Vorteilhaft wird hierbei die Oberfläche der Wärmedämmschicht mittels Elektrolyse, wobei das mit der Wärmedämmschicht beschichtete Substrat auf positives Poten tial gelegt wird, mit reaktiven Sauerstoff, auch als nascierender Sauerstoff bezeichnet, konditioniert.In the method according to the invention will the damaged one Site, which is also referred to as Kaviation, in the thermal barrier coating advantageous initially subjected to an electrochemical process. Advantageously, the surface of the thermal barrier coating by means of electrolysis, doing that with the thermal barrier coating coated substrate is placed on positive pot tial, with reactive Oxygen, also called nascent oxygen, conditioned.
Anschließend wird umgepolt, d.h. das mit der Wärmedämmschicht beschichtete Substrat wird auf negatives Potential gelegt. Mittels elektrophoretischer Abscheidung von Wärmedämmschichtmaterial wird anschließend die mittels des elektrochemischen Prozesses vorbehandelten Kavitation mit Wärmedämmschichtmaterial aufgefüllt. Aufgrund des Feldverlaufs des anliegenden elektrischen Feldes wird ausschließlich die Kavitation mit einer hohen Gründichte aufgefüllt.Subsequently, will reversed, i. that with the thermal barrier coating coated substrate is placed on negative potential. through Electrophoretic deposition of thermal barrier coating material is then the Pre-treated by the electrochemical process cavitation with thermal barrier coating material refilled. Due to the field profile of the applied electric field is exclusively the Cavitation with a high green density refilled.
Vorteilhaft liegt für die Elektrophorese das Wärmedämmschichtmaterial als Pulversuspension vor, wobei es vorteilhaft nanoskalige Partikel enthält. Als Wärmedämmschichtmaterial kann z.B. Yttrium teilstabilisiertes Zirkonoxid (YSZ), Lanthan-Magnesium-Hexaaluminat oder ein Gemisch daraus verwendet werden.Advantageous is for the electrophoresis the thermal barrier coating material as a powder suspension, wherein it is advantageous nanoscale particles contains. When Thermal barrier coating material can e.g. Yttrium partially stabilized zirconia (YSZ), lanthanum magnesium hexaaluminate or a mixture thereof.
Ein Vorteil des erfindungsgemäßen Verfahrens ist, dass mit der Elektrophorese in der Kavitation eine mit der unbeschädigten Wärmedämmschicht vergleichbare Struktur aufgebaut wird. Dadurch wird die Standfestigkeit des reparierten Bauteils erhöht.One Advantage of the method according to the invention is that with electrophoresis in cavitation one with the undamaged Thermal barrier comparable Structure is built. This will fix the stability of the repaired Component increases.
Ein weiterer Vorteil ist, dass mit dem erfindungsgemäßen Verfahren der abschließende Sinterprozeß bei niedrigen Temperaturen unterhalb 1000°C stattfinden kann.One Another advantage is that with the inventive method of the final sintering process at low Temperatures below 1000 ° C can take place.
Claims (9)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10335406A DE10335406A1 (en) | 2003-08-01 | 2003-08-01 | Method of repairing thermal barrier coatings with local damage |
EP04762487A EP1654402A1 (en) | 2003-08-01 | 2004-07-22 | Method for repairing heat-insulating layers with local damages |
PCT/DE2004/001637 WO2005012598A1 (en) | 2003-08-01 | 2004-07-22 | Method for repairing heat-insulating layers with local damages |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10335406A DE10335406A1 (en) | 2003-08-01 | 2003-08-01 | Method of repairing thermal barrier coatings with local damage |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10335406A1 true DE10335406A1 (en) | 2005-02-17 |
Family
ID=34072031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10335406A Withdrawn DE10335406A1 (en) | 2003-08-01 | 2003-08-01 | Method of repairing thermal barrier coatings with local damage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1654402A1 (en) |
DE (1) | DE10335406A1 (en) |
WO (1) | WO2005012598A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014212134A1 (en) * | 2014-06-25 | 2015-12-31 | Siemens Aktiengesellschaft | Ceramic coating of a metallic body, method and use of the method thereto |
US20160348509A1 (en) * | 2014-01-29 | 2016-12-01 | Safran Aircraft Engines | Method for localised repair of a damaged thermal barrier |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1769974A1 (en) * | 1967-08-18 | 1971-10-21 | Westinghouse Electric Corp | Coating compound for electrophoretic coating |
JPH06116783A (en) * | 1991-08-09 | 1994-04-26 | Permelec Electrode Ltd | Chrome plating method |
FR2682401B1 (en) * | 1991-10-09 | 1993-11-26 | Sochata | METHOD FOR THE ELECTROPHORETIC DEPOSITION OF METAL POWDER FOR RECHARGING OF PARTS BY DIFFUSION BRAZING AND BATH USED. |
DE19935337A1 (en) * | 1999-07-28 | 2001-02-01 | Volkswagen Ag | Partially coating metallic workpieces comprises completely or partially removing the lacquer in the regions to be coated, and subjecting the workpiece to a cathodic electro-dip lacquering on the regions to be coated |
WO2002097162A1 (en) * | 2001-05-29 | 2002-12-05 | Mcgill University | Thermal barrier coatings and fabrication of same using electrochemical methods |
FR2827311B1 (en) * | 2001-07-12 | 2003-09-19 | Snecma Moteurs | PROCESS FOR LOCAL REPAIR OF PARTS COATED WITH A THERMAL BARRIER |
-
2003
- 2003-08-01 DE DE10335406A patent/DE10335406A1/en not_active Withdrawn
-
2004
- 2004-07-22 EP EP04762487A patent/EP1654402A1/en not_active Withdrawn
- 2004-07-22 WO PCT/DE2004/001637 patent/WO2005012598A1/en not_active Application Discontinuation
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160348509A1 (en) * | 2014-01-29 | 2016-12-01 | Safran Aircraft Engines | Method for localised repair of a damaged thermal barrier |
EP3099848A1 (en) * | 2014-01-29 | 2016-12-07 | Safran Aircraft Engines | Process for localised repair of a damaged thermal barrier |
CN106414813A (en) * | 2014-01-29 | 2017-02-15 | 赛峰飞机发动机公司 | Process for localized repair of a damaged thermal barrier |
US9840914B2 (en) * | 2014-01-29 | 2017-12-12 | Safran Aircraft Engines | Method for localised repair of a damaged thermal barrier |
CN106414813B (en) * | 2014-01-29 | 2019-04-30 | 赛峰飞机发动机公司 | The method that local route repair is damaged thermal insulation layer |
EP3789518A1 (en) * | 2014-01-29 | 2021-03-10 | Safran Aircraft Engines | Method for localised repair of a damaged thermal barrier |
EP3099848B1 (en) * | 2014-01-29 | 2021-08-25 | Safran Aircraft Engines | Process for localised repair of a damaged thermal barrier |
DE102014212134A1 (en) * | 2014-06-25 | 2015-12-31 | Siemens Aktiengesellschaft | Ceramic coating of a metallic body, method and use of the method thereto |
Also Published As
Publication number | Publication date |
---|---|
WO2005012598A1 (en) | 2005-02-10 |
EP1654402A1 (en) | 2006-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: MTU AERO ENGINES GMBH, 80995 MUENCHEN, DE Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8127 | New person/name/address of the applicant |
Owner name: MTU AERO ENGINES GMBH, 80995 MUENCHEN, DE Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8139 | Disposal/non-payment of the annual fee |