EP2331723A1 - Turbinenschaufel einer gasturbine und verfahren zum beschichten einer turbinenschaufel einer gasturbine - Google Patents
Turbinenschaufel einer gasturbine und verfahren zum beschichten einer turbinenschaufel einer gasturbineInfo
- Publication number
- EP2331723A1 EP2331723A1 EP09776056A EP09776056A EP2331723A1 EP 2331723 A1 EP2331723 A1 EP 2331723A1 EP 09776056 A EP09776056 A EP 09776056A EP 09776056 A EP09776056 A EP 09776056A EP 2331723 A1 EP2331723 A1 EP 2331723A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- turbine blade
- blade
- coating
- chromium
- particles
- 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.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 40
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims description 22
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 29
- 239000011651 chromium Substances 0.000 claims abstract description 29
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000005260 corrosion Methods 0.000 claims abstract description 14
- 238000009792 diffusion process Methods 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 29
- 239000003973 paint Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 14
- 239000004922 lacquer Substances 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 10
- 230000007797 corrosion Effects 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 150000004820 halides Chemical class 0.000 claims description 7
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 6
- 239000000788 chromium alloy Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 229910001510 metal chloride Inorganic materials 0.000 claims description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- -1 methyl cellulose compound Chemical class 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000005486 sulfidation Methods 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
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/30—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes using a layer of powder or paste on the surface
- C23C10/32—Chromising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3007—Fixing blades to rotors; Blade roots ; Blade spacers of axial insertion type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/3092—Protective layers between blade root and rotor disc surfaces, e.g. anti-friction layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/90—Coating; Surface treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/95—Preventing corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
- F05D2300/611—Coating
Definitions
- the invention relates to a turbine blade of a gas turbine according to the preamble of claim 1. Furthermore, the invention relates to a method for coating a turbine blade of a gas turbine according to the preamble of patent claim 9.
- a turbine blade of a gas turbine and a method for coating a turbine blade of a gas turbine is known, the turbine blade having an airfoil, a blade root and a platform positioned between the airfoil and the blade root.
- a wear protection coating namely a corrosion-resistant protective coating, the wear protection coating being an MCrAlY coating.
- Coating coating is. This coating coating has a chromium content of between 10% and 40% by weight.
- the present invention is based on the problem of creating a novel turbine blade of a gas turbine and a novel method for coating a turbine blade.
- the anticorrosive coating is a diffusion coating having a chromium content in the surface area of more than 30% by weight.
- the inventive method for coating a turbine blade comprises at least the following steps: a) provision of a turbine blade; b) projecting at least one lacquer layer onto at least one region of the turbine blade, the lacquer comprising chromium particles and / or chromium alloy particles, halides and binders; c) drying the applied paint at a temperature between 5O 0 C and 600 ° C with decomposition of the binder; d) subsequent reaction bonding at a temperature between 900 0 C and 1160 0 C.
- the life of turbine blades can be increased and an effective protection against hot gas corrosion or sulfidation can be realized, wherein this protection against the base material of the turbine blade is increased by a factor of 6. Even with a complex contouring of the underside of the platform and the transition region between the underside of the platform and the blade root, a good coating can be ensured.
- Fig. 1 is a schematic view of a turbine blade of a gas turbine.
- FIG. 1 shows a schematic illustration of a turbine blade 10 of a gas turbine designed as a rotor blade, wherein the turbine blade 10 comprises an airfoil 11, a blade root 12 and a platform 13 positioned between the airfoil 11 and the blade root 12.
- the turbine blade 10 is coated on an underside 14 of the platform and / or on a transition region 15 between the underside 14 of the platform 13 and the blade root 12 with a corrosion protection coating.
- the anticorrosive coating is a diffusion coating having a chromium content in the surface area of more than 30% by weight.
- the anticorrosive coating is formed as a graded, ductile Inchromier Anlagen whose chromium content in the surface region is preferably between 40 wt .-% and 95 wt .-%.
- An ⁇ -chromium phase fraction having a chromium content of more than 30% by weight of the corrosion protection coating is between 5% by weight and 50% by weight.
- the remainder of the chromium content of the corrosion protection coating is formed by other chromium phases and by chromium dissolved in the mixed crystal of the base material.
- the ⁇ -chromium phase content of the chromium content of the anticorrosive coating has a Vickers hardness of less than 800.
- the total layer thickness of the anticorrosive coating is between 5 ⁇ m and 120 ⁇ m, preferably between 15 ⁇ m and 50 ⁇ m.
- At least one coating layer is applied to the underside 14 of the platform 13 and / or the transition region 15 between the underside 14 of the platform 13 and the blade root 12, wherein the paint chromium particles and / or chromium alloy particles, halides and binder.
- the particle size of the chromium particles and / or chromium alloy particles is in particular up to 20 microns.
- the halides of the paint are preferably metal chloride particles, in particular CrCb particles and / or CrCb particles.
- the binder of the paint is preferably an acrylic or glycol based or polyvinyl base.
- the paint preferably has the following composition:
- binder 25 to 95% by weight of binder; 0, 1 to 10% by weight CrC12 particles and / or CrC13 particles;
- an acrylic acid ester or methacrylic acid ester, a methyl cellulose compound, a polysaccharide, a polyvinyl alcohol, a polyvinyl ether, a polyvinyl acetate, a polyvinylpyrrolidone or a colloidal silica mixture can be used to provide an aqueous dispersion. It is also possible to provide a nonaqueous dispersion as a lacquer.
- At least one lacquer layer of this lacquer is applied to the underside 14 of the platform 13 and / or the transition region 15 between the platform 13 and the shower foot 12, preferably several lacquer layers are applied to these regions of the turbine blade, each lacquer layer having one Layer thickness between 2 microns and 50 microns is applied. It is preferably applied between one and ten layers of paint, in particular between three and six layers of paint.
- a reaction connecting the chromium particles and / or chromium alloy particles with molten chrome chloride particles takes place at a temperature between 900 0 C and 1160 0 C, the reaction bonding for a period between 15 minutes and is carried out for 15 hours.
- Subsequent to the reaction bonding is preferably a diffusion annealing of the formed pure chromium layer at a temperature between 95O 0 C and 1200 0 C for diffusing the chromium in the surface of the previously coated with the paint areas of the turbine blade, in which case preferably Cl compounds be withdrawn.
- the diffusion annealing takes place for a time between 30 minutes and 12 hours.
- the diffusion annealing is preferably carried out in a hydrogen atmosphere or in an inert gas partial pressure atmosphere with a pressure between ambient pressure, that is about 1000 mbar, and 0.01 mbar.
- the diffusion annealing is preferably carried out in a halide atmosphere, in which case the hydrogen atmosphere or the inert gas partial pressure atmosphere comprises a gaseous addition of metal chloride particles, in particular a gaseous addition of CrCl 2 particles and / or CrCl 3 particles.
- Argon is preferably used as the inert gas.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810039969 DE102008039969A1 (de) | 2008-08-27 | 2008-08-27 | Turbinenschaufel einer Gasturbine und Verfahren zum Beschichten einer Turbinenschaufel einer Gasturbine |
PCT/DE2009/001095 WO2010022698A1 (de) | 2008-08-27 | 2009-08-01 | Turbinenschaufel einer gasturbine und verfahren zum beschichten einer turbinenschaufel einer gasturbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2331723A1 true EP2331723A1 (de) | 2011-06-15 |
EP2331723B1 EP2331723B1 (de) | 2013-02-27 |
Family
ID=41199829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09776056A Active EP2331723B1 (de) | 2008-08-27 | 2009-08-01 | Verfahren zum beschichten einer turbinenschaufel einer gasturbine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2331723B1 (de) |
DE (1) | DE102008039969A1 (de) |
WO (1) | WO2010022698A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2844494C (en) | 2011-08-11 | 2020-01-14 | Mol Belting Systems, Inc. | Cleaning-in-place system and seal monitoring |
DE102011089131A1 (de) * | 2011-12-20 | 2013-06-20 | Mtu Aero Engines Gmbh | Diffusionsbeschichtungsverfahren und damit hergestellte Chromschicht |
US20140004372A1 (en) * | 2012-06-28 | 2014-01-02 | Kevin L. Collins | Chromium diffusion coating |
DE102012015586A1 (de) | 2012-08-08 | 2014-05-15 | MTU Aero Engines AG | Duplex Phasen CrAl-Beschichtung für verbesserten Korrosions-/Oxidations-Schutz |
DE102014222024A1 (de) | 2014-10-29 | 2016-06-16 | MTU Aero Engines AG | Schlicker und Verfahren zur Herstellung einer Oxidations- und Korrosionsbeständigen Diffusionschicht |
DE102017212075A1 (de) | 2017-07-14 | 2019-01-17 | MTU Aero Engines AG | Verfahren zum Beschichten eines Bauteils für den Heißgaskanal einer Strömungsmaschine |
DE102017213553A1 (de) | 2017-08-04 | 2019-02-07 | MTU Aero Engines AG | Schaufel für strömungsmaschine mit verschiedenen diffusionsschutzschichten und verfahren zur herstellung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60022300T2 (de) | 1999-12-20 | 2006-06-22 | United Technologies Corp., Hartford | Gegenstände mit korrosionsbeständigen Beschichtungen |
GB0409486D0 (en) * | 2004-04-28 | 2004-06-02 | Diffusion Alloys Ltd | Coatings for turbine blades |
GB2421032A (en) * | 2004-12-11 | 2006-06-14 | Siemens Ind Turbomachinery Ltd | A method of protecting a component against hot corrosion |
GB2439313B (en) * | 2006-06-24 | 2011-11-23 | Siemens Ag | Method of protecting a component against hot corrosion and a component protected by said method |
-
2008
- 2008-08-27 DE DE200810039969 patent/DE102008039969A1/de not_active Ceased
-
2009
- 2009-08-01 EP EP09776056A patent/EP2331723B1/de active Active
- 2009-08-01 WO PCT/DE2009/001095 patent/WO2010022698A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010022698A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2331723B1 (de) | 2013-02-27 |
WO2010022698A1 (de) | 2010-03-04 |
DE102008039969A1 (de) | 2010-03-04 |
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