WO2007143962A1 - Thermisch beanspruchbares bauteil mit einer korrosionsschicht und verfahren zu dessen herstellung - Google Patents
Thermisch beanspruchbares bauteil mit einer korrosionsschicht und verfahren zu dessen herstellung Download PDFInfo
- Publication number
- WO2007143962A1 WO2007143962A1 PCT/DE2006/001076 DE2006001076W WO2007143962A1 WO 2007143962 A1 WO2007143962 A1 WO 2007143962A1 DE 2006001076 W DE2006001076 W DE 2006001076W WO 2007143962 A1 WO2007143962 A1 WO 2007143962A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tantalum
- component
- layer
- protection layer
- corrosion layer
- Prior art date
Links
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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
- C23C14/165—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon by cathodic sputtering
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/007—Preventing corrosion
-
- 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
-
- 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
- F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/97—Rocket nozzles
- F02K9/974—Nozzle- linings; Ablative coatings
-
- 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
Definitions
- the invention relates to a thermally stressable component, consisting of a substrate, with a corrosion protection layer, on which a thermal protection layer is applied.
- Such a thermally stressable component is described, for example, in EP 1 365 039 A1.
- This part is a turbine blade exposed to a highly corrosive combustion gas at high temperatures.
- the turbine blade is therefore provided with a corrosion protection layer of a MCrAlY layer whose surface or interface can passivate, in particular due to the aluminum content in the alloy.
- a thermal protection layer also known as thermal barrier coating, TBC is applied, which reduces the thermal stress on the component due to its low thermal conductivity properties.
- the MCrAlY layer is subject to diffusion processes in which the passivation layer formed by the aluminum alloy portion is constantly renewed. At the same time, the MCrAlY layer depletes the alloy content of aluminum. The consumption of this alloy content is a factor determining the service life of the turbine blade. If the anti-corrosion properties of the MCrAlY coating are insufficient, the turbine blade must be replaced.
- the object of the invention is to provide a thermally stressable component which has a corrosion protection layer which has improved corrosion protection properties.
- the corrosion protection layer consists of tantalum, which is passivated at the interface to the thermal protection layer.
- the known effect is used that tantalum spontaneously reacts with oxygen to form a highly stable passivation layer.
- the excellent corrosion protection is also effected when the tantalum layer is applied under a thermal protection layer instead of the known MCrAlY layer.
- the significantly higher stability of the passivation layer compared to MCrAlY layers advantageously leads to a significantly lower consumption of the tantalum layer compared to MCrAlY layers.
- the tantalum layer is highly heat-resistant, so that the thermal stress of the turbine blade can be readily tolerated.
- the tantalum has a purity of more than 99.5% in the non-passivated region of the layer. It has been shown that a high degree of purity of the tantalum layer further improves the properties of the passivation layer, so that its longevity during operation, in particular of highly thermally stressed components such as turbine blades, can still be improved.
- the substrate consists of a superalloy.
- Superalloys are made of nickel and / or cobalt base alloys, and are preferred as Base material used for highly thermally stressed components such as turbine bowls. It has been found that good adhesion can be achieved between the tantalum layer and the superalloy materials.
- the invention relates to a method for producing a thermally stressable component, wherein the substrate of the component is first coated with a corrosion protection layer and then with a thermal protective layer.
- a further object of the invention is therefore to provide a method for producing a thermally stressable component with which
- This object is achieved in that is applied as anticorrosion layer pure tantalum.
- the advantages in terms of the corrosive properties of pure tantalum due to the spontaneous passivation of the tantalum surface have already been explained.
- the tantalum is applied with a purity of more than 99.5%.
- This can be, for example, in vacuum coating technology such. B. achieve sputtering.
- cold-gas spraying is particularly suitable as a coating method. This is operated using an inert gas so that oxygen is kept out of the process can. This is necessary so that a passivation of the tantalum layer takes place only after their generation.
- the purity of the deposited tantalum in both processes is determined by the use of the raw materials.
- a target is provided, which is vaporized to form a layer.
- the purity of the target determines the purity of the deposited layer.
- cold gas spraying powdered raw materials are used, which are added to the cold gas jet. Also in this method, the purity of the deposited layer is determined by the purity of the powders used.
- the single figure shows schematically a turbine blade with a tantalum layer as an embodiment of the invention.
- the turbine blade 11 is schematically indicated as a flow profile.
- the turbine blade has a cavity 12, which for example serves to supply cooling air for the turbine blade, which reaches the surface 17 of the turbine blade through cooling air bores (not shown).
- the base material of the turbine blade forms a substrate 13, on which by means of cold gas spraying a corrosion protection layer 14 of tantalum with a purity of 99.9% is applied.
- a corrosion protection layer 14 is applied to the passivation layer 15, which reduces the thermal stress on the underlying corrosion protection layer 14 and of the substrate material 13.
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)
- Combustion & Propulsion (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112006004000T DE112006004000A5 (de) | 2006-06-16 | 2006-06-16 | Thermisch beanspruchbares Bauteil mit einer Korrosionsschihct und Verfahren zu dessen Herstellung |
PCT/DE2006/001076 WO2007143962A1 (de) | 2006-06-16 | 2006-06-16 | Thermisch beanspruchbares bauteil mit einer korrosionsschicht und verfahren zu dessen herstellung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001076 WO2007143962A1 (de) | 2006-06-16 | 2006-06-16 | Thermisch beanspruchbares bauteil mit einer korrosionsschicht und verfahren zu dessen herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007143962A1 true WO2007143962A1 (de) | 2007-12-21 |
Family
ID=37075590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2006/001076 WO2007143962A1 (de) | 2006-06-16 | 2006-06-16 | Thermisch beanspruchbares bauteil mit einer korrosionsschicht und verfahren zu dessen herstellung |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112006004000A5 (de) |
WO (1) | WO2007143962A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2128643A1 (de) * | 1971-03-08 | 1972-10-20 | Siemens Ag | |
DE3411320A1 (de) * | 1984-03-28 | 1985-10-10 | W.C. Heraeus Gmbh, 6450 Hanau | Bad und verfahren zur galvanischen abscheidung von ueberzuegen aus tantal |
US5102697A (en) * | 1989-02-28 | 1992-04-07 | Mtu Motoren- Und Turbinen-Union Muenchen Gmbh | Structural component made of a titanium alloy and covered by a protective coating and method for producing the coating |
DE4222210C1 (en) * | 1992-07-07 | 1993-08-19 | Mtu Muenchen Gmbh | Protective coating for titanium@ or titanium@ alloy jet engine component - comprises top layer of titanium@ intermetallic cpd. with vanadium@ chromium@, manganese@, niobium, molybdenum@, tantalum or tungsten@, and interlayer |
US5919531A (en) * | 1997-03-26 | 1999-07-06 | Gelest, Inc. | Tantalum and tantalum-based films and methods of making the same |
-
2006
- 2006-06-16 DE DE112006004000T patent/DE112006004000A5/de not_active Withdrawn
- 2006-06-16 WO PCT/DE2006/001076 patent/WO2007143962A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2128643A1 (de) * | 1971-03-08 | 1972-10-20 | Siemens Ag | |
DE3411320A1 (de) * | 1984-03-28 | 1985-10-10 | W.C. Heraeus Gmbh, 6450 Hanau | Bad und verfahren zur galvanischen abscheidung von ueberzuegen aus tantal |
US5102697A (en) * | 1989-02-28 | 1992-04-07 | Mtu Motoren- Und Turbinen-Union Muenchen Gmbh | Structural component made of a titanium alloy and covered by a protective coating and method for producing the coating |
DE4222210C1 (en) * | 1992-07-07 | 1993-08-19 | Mtu Muenchen Gmbh | Protective coating for titanium@ or titanium@ alloy jet engine component - comprises top layer of titanium@ intermetallic cpd. with vanadium@ chromium@, manganese@, niobium, molybdenum@, tantalum or tungsten@, and interlayer |
US5919531A (en) * | 1997-03-26 | 1999-07-06 | Gelest, Inc. | Tantalum and tantalum-based films and methods of making the same |
Also Published As
Publication number | Publication date |
---|---|
DE112006004000A5 (de) | 2009-05-20 |
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