WO2005052211A1 - Method for producing a corrosion-resistant and oxidation-resistant coating and component comprising a coating of this type - Google Patents
Method for producing a corrosion-resistant and oxidation-resistant coating and component comprising a coating of this type Download PDFInfo
- Publication number
- WO2005052211A1 WO2005052211A1 PCT/DE2004/002438 DE2004002438W WO2005052211A1 WO 2005052211 A1 WO2005052211 A1 WO 2005052211A1 DE 2004002438 W DE2004002438 W DE 2004002438W WO 2005052211 A1 WO2005052211 A1 WO 2005052211A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- powder
- metal powder
- metal
- coating
- Prior art date
Links
Classifications
-
- 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
-
- 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
- C23C10/18—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions
- C23C10/26—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions more than one element being diffused
-
- 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
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/14—Noble metals, i.e. Ag, Au, platinum group metals
- F05D2300/143—Platinum group metals, i.e. Os, Ir, Pt, Ru, Rh, Pd
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- the invention relates to a method for producing a corrosion-resistant and oxidation-resistant coating. Furthermore, the invention relates to a component with such a coating.
- components When components, in particular components of gas turbines, are operated at high temperatures, their free surfaces are exposed to strongly corrosive and oxidizing conditions.
- such components can consist, for example, of a nickel-based or cobalt-based superalloy.
- the components are provided with coatings that are made from metal powders.
- a method for producing a corrosion-resistant and oxidation-resistant slip layer is known from DE 198 07 636 C1.
- a slip material is produced by mixing a binder solution with an initial powder containing aluminum or chromium and an addition powder containing at least one element made of aluminum, platinum, palladium or silicon, the addition powder containing no aluminum in the case of an exit powder containing only aluminum includes.
- the slip material thus produced is then applied to a component and then cured.
- a heat treatment following the hardening serves to diffuse the slip layer into the component.
- a binder, an addition powder and a starting powder are accordingly mixed and this mixture is applied to the component.
- the starting powder is, for example, pure aluminum in the process disclosed therein, and the addition powder is, for example, pure platinum.
- the present invention is based on the problem of creating a novel method for producing a corrosion-resistant and oxidation-resistant coating and a component with such a coating.
- the method comprises at least the following steps: a) providing a component made of a component material, b) providing a slip material which contains at least one metal powder in addition to a binder, the metal powder comprising at least 25% by weight of a metal from the platinum group and b1) is formed from coated powder cores, the powder cores being formed from at least one metal from the platinum group, and the sheaths of the powder cores being formed from a material which is the same as the component material, or b2) is formed from a metal powder alloy, which, in addition to the at least one metal of the platinum group, contains at least one material that is the same as the component material, c) applying the slip material at least in regions to the component to form a slip layer, d) curing or drying the slip layer, e) heat treating the slip material with the slip material zumind Part of the component coated to diffuse the slip layer into the component.
- the powder cores of the metal powder are formed from platinum and / or palladium, the sheaths of the powder cores being formed from the component material of the component to be coated.
- the powder cores made of platinum and / or palladium are coated with nickel or a nickel alloy.
- the coating of the metal of the platinum group suppresses the oxide formation thereof and thus has a positive influence on the formation of the coating.
- the metal powder is preferably mixed with an aluminum powder and the binder to form a Pt-Al slip material, which is then processed in the sense of steps c) to e) above.
- the component according to the invention is characterized by the features of claim 14.
- Fig. 1 shows a blade 10 of a gas turbine, which includes an airfoil 11 and a blade root 12.
- the blade 10 is provided with a coating 13 on all sides, the coating 13 being applied to the blade 10 in the sense of the method according to the invention.
- the blade 1 1 can also be coated in sections.
- the blade 10 according to FIG. 1 is preferably made of a nickel-based alloy, the nickel-based alloy accordingly forms the component material for the component to be coated, namely for the blade 10.
- the invention is not limited to the coating of components . which are made of a nickel-based alloy. Components of a cobalt-based alloy, iron alloy or even titanium alloy can also be coated with the invention.
- the blade 10 according to FIG. 1 is coated in the sense of the invention using a so-called slip process.
- a slip material is provided.
- the slip material comprises a binder or a binder solution and at least one metal powder, the metal powder consisting of at least 25% by weight of at least one metal from the platinum group.
- the binder can be an organic binder or the binder solution can be a chromium-phosphate solution.
- other binders can also be used.
- a metal powder is formed from coated powder cores.
- the powder cores are formed from at least one metal from the platinum group.
- the powder cores consist either of high-purity platinum, high-purity palladium or of a platinum-palladium mixture. These powder cores are also coated according to the invention.
- the material of the casing essentially corresponds to the component material of the component to be coated, in the exemplary embodiment shown the component material of the blade 10 to be coated. If the blade 10 to be coated is made of a nickel-based alloy, the powder cores of the metal powder are either nickel or a nickel alloy jacketed.
- a component which is made from a cobalt-based alloy
- the powder cores are covered either by cobalt or a cobalt alloy.
- the powder cores made of platinum and / or palladium are encased in iron or an iron alloy.
- a metal powder for the slip material the powder cores of which are formed from platinum and / or palladium, the powder cores being coated with a material. are coated, the composition of which essentially corresponds to the composition of the component material of the component to be coated.
- the metal powder is formed from a metal powder alloy which, in addition to the at least one metal from the platinum group, contains at least one material that is the same as the component material.
- the main difference from the first alternative is that the coated powder cores only alloy when heated later, while the metal powder alloy is already alloyed.
- a slip material which, in addition to the binder, comprises aluminum on the one hand and the coated powder cores described above, in particular nickel-coated platinum cores, or a corresponding metal powder alloy.
- an aluminum-platinum-nickel slip material is provided which enables a particularly preferred formation of an aluminum-platinum coating on the surface of the component to be coated, in the exemplary embodiment shown of the blade 10 to be coated.
- the slip material in addition to the binder and the coated powder cores or the corresponding metal powder alloy, can of course also have an MCrAIY and / or NiAl and / or NiCrAI metal powder. It is therefore within the meaning of the present invention to provide a slip material which comprises at least the binder or the binder solution and additionally at least the metal powder from the coated powder cores or the corresponding metal powder alloy. In addition, aluminum powder or another metal powder can be contained in the slip material.
- the slip material thus provided is applied to the component to be coated, in the exemplary embodiment shown to Scoop 10, applied.
- the application is carried out by brushing, spraying, dipping or another suitable method.
- the slip layer After applying the slip material to form a slip layer on the component, the slip layer is hardened or dried.
- the hardening of the slip layer is carried out in a temperature range from room temperature to 450 ° C., preferably in a temperature range from 350 ° C. to 450 ° C.
- the slip layer After the slip layer has hardened or dried, it is heat-treated to diffuse the slip layer into the component.
- the heat treatment is preferably carried out in a temperature range of 750 ° C to 1250 ° C for about two hours.
- the heat treatment can be carried out under a protective gas atmosphere, for example in argon. However, the heat treatment can alternatively also be carried out in a vacuum or in a normal atmosphere.
- the use of a coated platinum and / or palladium core as the metal powder prevents the platinum and / or palladium from being oxidized during the heat treatment or due to the binder. This enables a significantly better coating of the component to be achieved.
- the grain size of the coated powder cores or the corresponding metal powder alloy is in a range between 0.01 ⁇ m and 5 ⁇ m, preferably in a range from 0.2 ⁇ m to 0.5 ⁇ m.
- the particle shape of the coated powder cores is preferably spherical in order to ensure a uniform coating of the same. However, a disk-like or plate-like shape is also possible.
- the thickness of the coating of the powder cores in such a way that the percentage of the material of the powder cores is in a range between 25% by weight and 85% by weight and accordingly the proportion of the material of the Sheathing is between 75 wt .-% and 15 wt .-%.
- the thickness of the nickel coating is chosen such that the nickel content is between 15 and 35 wt .-% and the platinum content between 85 and 65 wt .-%.
- a metal powder alloy powder with an appropriate composition can alternatively be used, ie with 65% by weight to 85% by weight of platinum and 35% by weight to 15% by weight of nickel.
- a separate alitation of the component can take place.
- an aluminum source is provided and aluminum is diffused into the component to be coated.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/580,891 US20070231586A1 (en) | 2003-11-26 | 2004-11-04 | Method for Producing a Corrosion-Resistant and Oxidation-Resistant Coating and Component Part Having Such a Coating |
EP04797405A EP1687458A1 (en) | 2003-11-26 | 2004-11-04 | Method for producing a corrosion-resistant and oxidation-resistant coating and component comprising a coating of this type |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003155234 DE10355234A1 (en) | 2003-11-26 | 2003-11-26 | Process for producing a corrosion-resistant and oxidation-resistant coating and component with such a coating |
DE10355234.0 | 2003-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005052211A1 true WO2005052211A1 (en) | 2005-06-09 |
Family
ID=34625264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002438 WO2005052211A1 (en) | 2003-11-26 | 2004-11-04 | Method for producing a corrosion-resistant and oxidation-resistant coating and component comprising a coating of this type |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070231586A1 (en) |
EP (1) | EP1687458A1 (en) |
DE (1) | DE10355234A1 (en) |
WO (1) | WO2005052211A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1754801A3 (en) * | 2005-08-02 | 2008-04-02 | MTU Aero Engines GmbH | Coated component |
WO2013149606A1 (en) * | 2012-04-03 | 2013-10-10 | Mtu Aero Engines Gmbh | Cr (vi)-free anti-corrosion layers or adhesive layers which contain a solution comprising phosphate ions and metal powder, the metal powder being at least partially coated with si or si alloys |
EP2840162A1 (en) * | 2013-08-21 | 2015-02-25 | MTU Aero Engines GmbH | Method for coating a turbine component with an wear protection coating |
EP3015568A1 (en) * | 2014-10-29 | 2016-05-04 | MTU Aero Engines GmbH | Dross and method for producing an oxidation and corrosion resistant diffusion layer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015221482A1 (en) * | 2015-11-03 | 2017-05-04 | MTU Aero Engines AG | diffusion layers |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1608149A1 (en) * | 1967-01-03 | 1970-11-05 | Gen Electric | Cellular material and method of manufacture |
WO1999042633A1 (en) * | 1998-02-23 | 1999-08-26 | MTU MOTOREN- UND TURBINEN-UNION MüNCHEN GMBH | Method for producing a slip layer which is resistant to corrosion and oxidation |
EP1199377A2 (en) * | 2000-10-20 | 2002-04-24 | General Electric Company | Protecting a surface of a nickel-base article with a corrosion-resistant aluminum-alloy layer |
US6475297B1 (en) * | 1998-06-26 | 2002-11-05 | Kevin Rafferty | Method for forming corrosion resistant coating on an alloy surface |
US20030059542A1 (en) * | 2001-09-21 | 2003-03-27 | George Edward Creech | Method for coating internal surfaces |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2853403A (en) * | 1956-04-11 | 1958-09-23 | Sherritt Gordon Mines Ltd | Method of producing composite metal powders |
US4214042A (en) * | 1977-12-23 | 1980-07-22 | United Technologies Corporation | Titanium bearing MCrAlY type alloy and composite articles |
US5650235A (en) * | 1994-02-28 | 1997-07-22 | Sermatech International, Inc. | Platinum enriched, silicon-modified corrosion resistant aluminide coating |
FR2757181B1 (en) * | 1996-12-12 | 1999-02-12 | Snecma | PROCESS FOR PRODUCING A HIGH EFFICIENCY PROTECTIVE COATING AGAINST HIGH TEMPERATURE CORROSION FOR SUPERALLOYS, PROTECTIVE COATING OBTAINED BY THIS PROCESS AND PARTS PROTECTED BY THIS COATING |
-
2003
- 2003-11-26 DE DE2003155234 patent/DE10355234A1/en not_active Withdrawn
-
2004
- 2004-11-04 WO PCT/DE2004/002438 patent/WO2005052211A1/en active Application Filing
- 2004-11-04 US US10/580,891 patent/US20070231586A1/en not_active Abandoned
- 2004-11-04 EP EP04797405A patent/EP1687458A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1608149A1 (en) * | 1967-01-03 | 1970-11-05 | Gen Electric | Cellular material and method of manufacture |
WO1999042633A1 (en) * | 1998-02-23 | 1999-08-26 | MTU MOTOREN- UND TURBINEN-UNION MüNCHEN GMBH | Method for producing a slip layer which is resistant to corrosion and oxidation |
US6475297B1 (en) * | 1998-06-26 | 2002-11-05 | Kevin Rafferty | Method for forming corrosion resistant coating on an alloy surface |
EP1199377A2 (en) * | 2000-10-20 | 2002-04-24 | General Electric Company | Protecting a surface of a nickel-base article with a corrosion-resistant aluminum-alloy layer |
US20030059542A1 (en) * | 2001-09-21 | 2003-03-27 | George Edward Creech | Method for coating internal surfaces |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1754801A3 (en) * | 2005-08-02 | 2008-04-02 | MTU Aero Engines GmbH | Coated component |
US7655321B2 (en) | 2005-08-02 | 2010-02-02 | Mtu Aero Engines Gmbh | Component having a coating |
WO2013149606A1 (en) * | 2012-04-03 | 2013-10-10 | Mtu Aero Engines Gmbh | Cr (vi)-free anti-corrosion layers or adhesive layers which contain a solution comprising phosphate ions and metal powder, the metal powder being at least partially coated with si or si alloys |
US9822258B2 (en) | 2012-04-03 | 2017-11-21 | MTU Aero Engines AG | Cr(VI)-free corrosion protection layers or adhesion promoter layers produced using a solution comprising phosphate ions and metal powder, wherein the metal powder is coated at least partly with Si or Si alloys |
EP2840162A1 (en) * | 2013-08-21 | 2015-02-25 | MTU Aero Engines GmbH | Method for coating a turbine component with an wear protection coating |
EP3015568A1 (en) * | 2014-10-29 | 2016-05-04 | MTU Aero Engines GmbH | Dross and method for producing an oxidation and corrosion resistant diffusion layer |
EP3483303A1 (en) * | 2014-10-29 | 2019-05-15 | MTU Aero Engines GmbH | Dip coat and method for producing an oxidation and corrosion resistant diffusion layer |
US10316198B2 (en) | 2014-10-29 | 2019-06-11 | MTU Aero Engines AG | Slip and process for producing an oxidation- and corrosion-resistant diffusion layer |
Also Published As
Publication number | Publication date |
---|---|
US20070231586A1 (en) | 2007-10-04 |
EP1687458A1 (en) | 2006-08-09 |
DE10355234A1 (en) | 2005-06-30 |
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