DE10336989B4 - Process for the preparation of hot gas corrosion protection coatings - Google Patents
Process for the preparation of hot gas corrosion protection coatings Download PDFInfo
- Publication number
- DE10336989B4 DE10336989B4 DE10336989A DE10336989A DE10336989B4 DE 10336989 B4 DE10336989 B4 DE 10336989B4 DE 10336989 A DE10336989 A DE 10336989A DE 10336989 A DE10336989 A DE 10336989A DE 10336989 B4 DE10336989 B4 DE 10336989B4
- Authority
- DE
- Germany
- Prior art keywords
- hot gas
- corrosion protection
- aerosol
- gas corrosion
- preparation
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005260 corrosion Methods 0.000 title claims abstract description 10
- 230000007797 corrosion Effects 0.000 title claims abstract description 10
- 238000002360 preparation method Methods 0.000 title claims description 4
- 238000000576 coating method Methods 0.000 title abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000010970 precious metal Substances 0.000 claims abstract description 9
- 239000000443 aerosol Substances 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 239000007789 gas Substances 0.000 claims description 15
- 229910000510 noble metal Inorganic materials 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052756 noble gas Inorganic materials 0.000 claims description 2
- 229910052763 palladium Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- -1 platinum group metals Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004563 wettable powder Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/02—Pretreatment of the material to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
- B05B7/222—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc
- B05B7/224—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using an arc the material having originally the shape of a wire, rod or the like
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Verfahren zur Herstellung von Heissgas-Korrosionsschutzschichten auf einen Werkstoff mit einem Ni-Basismaterial, dadurch gekennzeichnet, dass ein als Draht vorliegendes Edelmetall in einem Lichtbogen-Drahtspritzprozeß als Aerosol auf den Werkstoff aufgebracht wird, welcher anschließend alitiert wird.method for the production of hot gas corrosion protection coatings on a Material with a Ni-base material, characterized in that a precious metal wire in an arc wire spraying process as an aerosol is applied to the material, which then alitiert becomes.
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Heissgas-Korrosionsschutzschichten auf einen Werkstoff mit einem Ni-Basismaterial gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to a process for the preparation of hot gas corrosion protection layers a material with a Ni base material according to the preamble of the claim 1.
In Fluggasturbinen ist im Bereich der Hochdruckturbine, insbesondere der Turbinenschaufeln, ein Heissgas-Korrosionsschutz im Hochtemperaturbereich erforderlich. Hierzu werden die Turbinenschaufeln, welche ein Ni-Basismaterial aufweisen mit einem Edelmetall, üblicherweise Platin, beschichtet. Anschließend wird die Turbinenschaufel bei einer Temperatur von ca. 300–400 °C kalziniert. Dadurch entsteht ein Gradientenwerkstoff, wobei sich aufgrund eines Diffusionsprozess ein Konzentrationsgefälle des Edelmetalls in das Ni-Basismaterial einstellt. Auf diesen Gradientenwerkstoff wird anschließend die Heissgas-Korrosionsschutzschicht, welche üblicherweise eine Al-Verbindung ist, aufgebracht. Mittels einer in einem weiteren Verfahrensschritt ausgeführten Kalzinierung wird in einem Diffusionsprozeß Aluminium in die Edelmetallschicht eingebracht. Dieser Schritt wird auch als Alitierung bezeichnet. Durch die Alitierung wird ein PtAl-Werkstoff erzeugt, welcher an der Oberfläche Al2O3 erzeugt, was eine Schutzschicht gegen korrosive Gase darstellt. Außerdem hat diese Al2O3-Schicht wärmedämmende Eigenschaften. Der Sauerstoff, welcher zur Bildung von Al2O3 benötigt wird, stammt beim der Verwendung des Werkstoffs als Turbinenschaufel in einer Fluggasturbine aus der Umgebungsluft.In aircraft gas turbines, hot gas corrosion protection in the high-temperature range is required in the area of the high-pressure turbine, in particular the turbine blades. For this purpose, the turbine blades, which have a Ni base material, are coated with a noble metal, usually platinum. Subsequently, the turbine blade is calcined at a temperature of about 300-400 ° C. This results in a gradient material, whereby due to a diffusion process, a concentration gradient of the noble metal is established in the Ni base material. The hot gas corrosion protection layer, which is usually an Al compound, is then applied to this gradient material. By means of a calcination carried out in a further process step, aluminum is introduced into the noble metal layer in a diffusion process. This step is also referred to as Alitierung. The alitization creates a PtAl material that generates Al 2 O 3 on the surface, which is a protective layer against corrosive gases. In addition, this Al 2 O 3 layer has thermal insulation properties. The oxygen, which is required for the formation of Al 2 O 3 , comes from the use of the material as a turbine blade in an aircraft gas turbine from the ambient air.
Die Al2O3-Schutzschicht wird verbraucht, wird allerdings durch das im Werkstoff vorhandene Al ständig nachgebildet. Wenn das in dem Werkstoff eingelagerte Al verbraucht ist, muß der Werkstoff, z.B. die Turbinenschaufel, erneut alitiert werden.The Al 2 O 3 protective layer is consumed, but is constantly replicated by the Al present in the material. If the embedded in the material Al is consumed, the material, such as the turbine blade, must be alitiert again.
Aus
der
Die WO 01/88218 A1 offenbart ein Verfahren zum Aufbringen einer Schicht aus Edelmetall und/oder einer Edelmetalllegierung auf ein Substrat durch Plasmaspritzen.The WO 01/88218 A1 discloses a method for applying a layer made of precious metal and / or a noble metal alloy on a substrate Plasma spraying.
Bekannte Verfahren zur Herstellung von Heissgas-Korrosionsschutzschichten sind z.B. galvanische Beschichtungsverfahren (wird auch als Platinierung bezeichnet) der Beschauflung von Heissgasturbinen mit anschließender diffusionskontrollierter Alitierung der aufgebrachten Edelmetallschicht (z.B. Pt-Schicht). Weitere Herstellungsverfahren sind z.B. Plasma- bzw. Flammspritzverfahren unter Verwendung von Edelmetallen als Spritzpulver und anschließender Alitierung.Known Process for the preparation of hot gas corrosion protection coatings are e.g. galvanic coating process (also called platination referred to) the loading of hot gas turbines with subsequent diffusion-controlled Alitierung the deposited noble metal layer (e.g., Pt layer). Other manufacturing processes are e.g. Plasma or flame spraying method using Precious metals as a wettable powder and subsequent Alitierung.
Bei den bekannten Herstellungsverfahren sind die hohen Kosten und der hohe Anteil des sogenannten Oversprays, also der Anteil des bei dem Beschichtungsprozess ungenutzten Edelmetalls, von Nachteil.at the known manufacturing processes are the high cost and the high proportion of the so-called overspray, ie the proportion of the coating process unused precious metal, disadvantageous.
Aufgabe der Erfindung ist es, ein wirtschaftliches Verfahren anzugeben, mit dem Heissgas-Korrosionsschutzschichten auf Werkstoffen mit einem Ni-Basismaterial hergestellt werden können.task the invention is to provide an economical method, with the hot gas corrosion protection layers can be made on materials with a Ni base material.
Diese Aufgabe wird mit dem Verfahren gemäß Anspruch 1 gelöst. Vorteilhafte Ausführungen der Erfindung sind Gegenstand von Unteransprüchen.These The object is achieved by the method according to claim 1. advantageous Executions of the Invention are the subject of dependent claims.
Erfindungsgemäß wird das als Draht vorliegende Edelmetall in einem Lichtbogen-Drahtspritzprozeß als Aerosol auf den Werkstoff aufgebracht und anschließend alitiert. Das Aerosol wird vorteilhaft mittels eines Hochstrom-Lichtbogenüberschlags durch den das als Draht vorliegende Edelmetall geführt wird, erzeugt. Das Edelmetall kann dabei vorteilhaft Pt, Pd oder eine Mischung daraus sein.According to the invention noble metal present as a wire in an arc wire spraying process as an aerosol applied to the material and then alitiert. The aerosol is advantageous by means of a high-current arc flashover which is guided as the precious metal present as wire produced. The precious metal may advantageously be Pt, Pd or a mixture thereof.
Das Aersol kann bevorzugt mit einem Prozessgas gemischt werden. Das Prozessgas kann dabei vorteilhaft ein Edelgas, Stickstoff, Wasserstoff oder eine beliebige Mischung daraus sein.The Aersol can preferably be mixed with a process gas. The Process gas can advantageously be a noble gas, nitrogen, hydrogen or be any mix of it.
In einer vorteilhaften Ausführung der Erfindung wird mittels Konturdüsen ein gebündelter Aerosol-Strahl erzeugt. Der Durchmesser des Strahls kann dabei insbesondere auf den jeweiligen Anwendungsfall angepaßt werden.In an advantageous embodiment According to the invention, a bundled aerosol jet is generated by means of contour nozzles. The diameter of the jet can in particular to the respective Use case adapted become.
Die Schichtdicke mit der das Edelmetall auf das Ni-Basismaterial aufgebracht wird, beträgt vorteilhaft zwischen 30 und 50 μm.The Layer thickness with which the noble metal is applied to the Ni base material is, is advantageously between 30 and 50 microns.
Mit dem erfindungsgemäßen Verfahren wird bei der Herstellung von Heissgas-Korrosionsschutzschichten weniger Edelmetall ungenutzt verbraucht, wodurch die Ressourcen des Edelmetalls geschont werden, da das sogenannte Overspray verringert wird. Daraus folgt eine Reduzierung der Herstellungskosten.With the method according to the invention, less noble metal is consumed unused in the production of hot gas corrosion protection layers, whereby the resources of the precious metal are spared, since the so-called overspray is reduced becomes. This results in a reduction of manufacturing costs.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10336989A DE10336989B4 (en) | 2003-08-12 | 2003-08-12 | Process for the preparation of hot gas corrosion protection coatings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10336989A DE10336989B4 (en) | 2003-08-12 | 2003-08-12 | Process for the preparation of hot gas corrosion protection coatings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE10336989A1 DE10336989A1 (en) | 2005-03-10 |
| DE10336989B4 true DE10336989B4 (en) | 2006-11-09 |
Family
ID=34177480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE10336989A Expired - Lifetime DE10336989B4 (en) | 2003-08-12 | 2003-08-12 | Process for the preparation of hot gas corrosion protection coatings |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10336989B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013223202A1 (en) * | 2013-11-14 | 2015-05-21 | Siemens Aktiengesellschaft | Geometry-induced spray spot adaptation in coating processes |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004061569A1 (en) * | 2004-12-21 | 2006-07-06 | Linde Ag | Use of a gas mixture and method of arc spraying |
| DE102005036162A1 (en) * | 2005-08-02 | 2007-02-08 | Mtu Aero Engines Gmbh | Corrosion- and/or oxidation-resistant coating for nickel-based substrates, e.g. gas turbine component, comprises platinum-aluminum region with outer 2-phase and inner single-phase zones |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1796175C2 (en) * | 1968-09-14 | 1974-05-30 | Deutsche Edelstahlwerke Gmbh, 4150 Krefeld | High temperature corrosion and scaling resistant diffusion protection layer on objects made of high temperature alloys based on nickel and / or cobalt |
| WO2001088218A1 (en) * | 2000-05-15 | 2001-11-22 | Euromat Gesellschaft Für Werkstofftechnologie Und Transfer Mbh | Method for applying precious metal layer and/or alloy and use thereof |
| US6383401B1 (en) * | 2000-06-30 | 2002-05-07 | International Flex Technologies, Inc. | Method of producing flex circuit with selectively plated gold |
| DE10124426A1 (en) * | 2001-05-18 | 2002-11-28 | Omg Ag & Co Kg | Surface coating used e.g. as a protective layer against mechanical, chemical and thermal action is made from platinum in a black modification |
-
2003
- 2003-08-12 DE DE10336989A patent/DE10336989B4/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1796175C2 (en) * | 1968-09-14 | 1974-05-30 | Deutsche Edelstahlwerke Gmbh, 4150 Krefeld | High temperature corrosion and scaling resistant diffusion protection layer on objects made of high temperature alloys based on nickel and / or cobalt |
| WO2001088218A1 (en) * | 2000-05-15 | 2001-11-22 | Euromat Gesellschaft Für Werkstofftechnologie Und Transfer Mbh | Method for applying precious metal layer and/or alloy and use thereof |
| US6383401B1 (en) * | 2000-06-30 | 2002-05-07 | International Flex Technologies, Inc. | Method of producing flex circuit with selectively plated gold |
| DE10124426A1 (en) * | 2001-05-18 | 2002-11-28 | Omg Ag & Co Kg | Surface coating used e.g. as a protective layer against mechanical, chemical and thermal action is made from platinum in a black modification |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013223202A1 (en) * | 2013-11-14 | 2015-05-21 | Siemens Aktiengesellschaft | Geometry-induced spray spot adaptation in coating processes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10336989A1 (en) | 2005-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8364 | No opposition during term of opposition | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: STEINWANDEL, JUERGEN, DR., 88690 UHLDINGEN-MUEHL, DE Owner name: PLATZ, ALBIN, 86510 RIED, DE Owner name: BAYER, ERWIN, DR., 85221 DACHAU, DE |
|
| 8330 | Complete renunciation |