EP1029114A1 - Für eine heissgasbeaufschlagung ausgelegtes erzeugnis und verfahren zur herstellung einer beschichtung für dieses erzeugnis - Google Patents
Für eine heissgasbeaufschlagung ausgelegtes erzeugnis und verfahren zur herstellung einer beschichtung für dieses erzeugnisInfo
- Publication number
- EP1029114A1 EP1029114A1 EP98961039A EP98961039A EP1029114A1 EP 1029114 A1 EP1029114 A1 EP 1029114A1 EP 98961039 A EP98961039 A EP 98961039A EP 98961039 A EP98961039 A EP 98961039A EP 1029114 A1 EP1029114 A1 EP 1029114A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- product
- coating
- chromium
- oxide
- chromium nitride
- 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
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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
- C23C28/3215—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer at least one MCrAlX layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
- C23C28/3455—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
Definitions
- the invention relates to a product designed for hot gas application with a coating, in particular a gas turbine blade.
- the invention further relates to a method for producing a coating for a product designed for the application of hot gas.
- the aim of the research is to develop a diffusion barrier between the base material and the coating, which at the same time guarantees a good connection of the coating to the base material. This is achieved using a chrome-aluminum-oxide-nitride system (Cr-AL-0-N).
- the object of the invention is to provide a product designed for hot gas application, in which a coating is provided which is improved with regard to its long-term resistance.
- Another object of the invention is to provide a method for producing a coating for a product designed for the application of hot gas.
- the object aimed at specifying a product is achieved by a product made of a base material on which a coating is applied and which is designed for hot gas application, comprising:
- a protective layer made of MCrAlY which contains at least one metal from the group (iron, cobalt,
- Chromium (Cr) with a content of at least 15 wt%, in particular at least 20 wt%;
- a product which can be subjected to hot gas is often provided with a protective layer of the type just mentioned.
- Protective layer serves to protect against oxidation and corrosion.
- an oxide layer is formed on such a protective layer, which essentially consists of aluminum oxide and / or chromium oxide.
- the oxide layer can also be formed by oxidation from a thin layer of an oxide former, such as aluminum or chromium, applied to the protective layer.
- an oxide former such as aluminum or chromium
- the protective layer of aluminum and chromium becomes poorer because aluminum and / or chromium diffuse into the oxide layer and oxidize there. As a result, the oxide layer grows. This is usually the life-limiting aging process for the coating and affects the mechanical properties of the growing oxide layer.
- chromium nitride is built into the coating.
- the invention is based on the surprising finding that chromium nitride is present in sufficient amounts in the protective layer can be formed if the concentration of chromium is above 15 wt%, preferably above 20 wt%.
- the chromium nitride acts as a particularly efficient diffusion barrier for the diffusion of aluminum and / or chromium to oxygen. This significantly improves the long-term durability of the coating.
- the protective layer preferably contains rhenium, in particular with a proportion between 1 wt% and 15 wt%.
- wt% means percent by weight and at% atomic percent.
- the chromium nitride is preferably contained in the oxide layer.
- the chromium nitride is more preferably present in a concentration between 10 at% and 60 at%, in particular about 50 at%.
- the chromium nitride is preferably present between the protective layer and the oxide layer, preferably in a transition region or also anchoring region between the oxide layer and the protective layer.
- chromium nitride in the form of a lattice.
- the chromium nitride preferably forms such a lattice, in particular an approximately rectangular lattice with a side length between 0.1 ⁇ m and 10 ⁇ m.
- the formation of such a lattice represents a particularly efficient diffusion barrier.
- the lattice structure reduces the susceptibility of the coating to cracking, which additionally improves the long-term durability of the coating.
- the product is preferably designed as a turbine blade, in particular as a gas turbine blade.
- a turbine blade Today, gas turbine showings are mostly exposed to particularly high thermal loads and an intensive attack by oxidation or corrosion.
- the service life of the coating of a gas turbine blade usually determines the inspection interval of the entire blade.
- the product is preferably designed as a heat shield of a thermal machine, in particular for a combustion chamber.
- a ceramic thermal barrier coating is preferably applied to the oxide layer, in particular a zircon-based thermal barrier coating.
- a ceramic thermal barrier coating serves to protect the turbine blade from very high temperatures.
- the ceramic thermal barrier coating is coupled to the protective layer via the oxide layer. An increase in the oxide layer leads to an increasing brittleness of the oxide layer.
- the increasing brittleness of the oxide layer has a reducing effect on the long-term durability of the coating due to an increased susceptibility to detachment of the thermal insulation layer. Because the diffusion-inhibiting effect of the chromium nitride slows down the growth of the oxide layer, the long-term stability of the coating is improved at a particularly vulnerable point, namely the boundary layer between the thermal insulation layer and the protective layer.
- the object aimed at specifying a method is achieved by a method for producing a coating for a product designed for the application of hot gas, whereby
- At least one metal from the group (iron, cobalt, Nikkei), abbreviated with M, • chromium (Cr) with a content of at least 15 at%, in particular at least 20 at%,
- Yttrium (Y) and / or hafnium and / or a metal from the group of rare earths, in particular scandium, lanthanum or cerium, is applied to the product
- an oxide layer, in particular with aluminum oxide and / or chromium oxide, is formed on the protective layer
- chromium nitride is generated via a nitrogen supply in the coating.
- the nitrogen is preferably supplied from a nitrogen plasma source via a nitrogen plasma treatment.
- a nitrogen plasma which additionally contains hydrogen as an oxygen getter, is more preferably supplied to the coating. The provision of hydrogen in a non-molecular form enables oxygen to be extracted from the chromium oxide.
- a DC voltage (BIAS) is more preferably applied between the product and the nitrogen plasma source. This enables faster production of chromium nitride because the nitrogen penetrates the product more efficiently.
- Fig. 1 shows a longitudinal section through a coating of a hot gas product
- Fig. 2 is an enlarged, schematic representation of a chromium nitride lattice in an oxide layer.
- the gas turbine blade 1 shows a section of a longitudinal section through a gas turbine blade which represents the product 1 which can be subjected to hot gas.
- the gas turbine blade 1 consists of a
- Base material 2 e.g. made of a nickel-based superalloy.
- the gas turbine blade 1 has a surface 1A.
- AI aluminum between 6 wt and 15 wt%
- y yttrium and / or hafnium and / or a rare earth metal, in particular scandium, lanthanum or cerium between 0.01 wt% and 2 wt%
- M nickel and / or cobalt and / or iron as the rest.
- Rhenium or other additives may also be present.
- a grid 8 made of chromium nitride 6 is shown schematically, which grid is made up of grid cells 7A.
- the interior of the grid cells 7A consists of aluminum oxide and / or chromium oxide.
- the grid 8 is not geometrically perfect, so it has e.g. Interruptions, changing thicknesses and changing area sizes of the grid cells 7A.
- an approximate average side length A of a grid cell 7A can be specified, which is preferably between 0.1 ⁇ m and 5 ⁇ m. This average side length A depends in particular on the material of the protective layer and / or the oxide layer or also on process parameters in the formation of the chromium nitride.
- Such a lattice of the chromium nitride 6 particularly efficiently prevents diffusion of aluminum or chromium.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19748538 | 1997-11-03 | ||
DE19748538 | 1997-11-03 | ||
PCT/DE1998/003123 WO1999023277A1 (de) | 1997-11-03 | 1998-10-21 | Für eine heissgasbeaufschlagung ausgelegtes erzeugnis und verfahren zur herstellung einer beschichtung für ein für dieses erzeugnis |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1029114A1 true EP1029114A1 (de) | 2000-08-23 |
EP1029114B1 EP1029114B1 (de) | 2001-12-19 |
Family
ID=7847480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98961039A Expired - Lifetime EP1029114B1 (de) | 1997-11-03 | 1998-10-21 | Für eine heissgasbeaufschlagung ausgelegtes erzeugnis und verfahren zur herstellung einer beschichtung für dieses erzeugnis |
Country Status (5)
Country | Link |
---|---|
US (1) | US6517959B1 (de) |
EP (1) | EP1029114B1 (de) |
JP (1) | JP2001521992A (de) |
DE (1) | DE59802578D1 (de) |
WO (1) | WO1999023277A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9951411B2 (en) | 2008-04-21 | 2018-04-24 | Mtu Aero Engines Gmbh | Erosion protection coating |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6655369B2 (en) * | 2001-08-01 | 2003-12-02 | Diesel Engine Transformations Llc | Catalytic combustion surfaces and method for creating catalytic combustion surfaces |
US20030092278A1 (en) * | 2001-11-13 | 2003-05-15 | Fink Steven T. | Plasma baffle assembly |
EP1365044A1 (de) * | 2002-05-24 | 2003-11-26 | Siemens Aktiengesellschaft | MCrAl-Schicht |
US7300702B2 (en) * | 2003-08-18 | 2007-11-27 | Honeywell International, Inc. | Diffusion barrier coating for Si-based components |
US8382436B2 (en) * | 2009-01-06 | 2013-02-26 | General Electric Company | Non-integral turbine blade platforms and systems |
US8262345B2 (en) * | 2009-02-06 | 2012-09-11 | General Electric Company | Ceramic matrix composite turbine engine |
US8347636B2 (en) | 2010-09-24 | 2013-01-08 | General Electric Company | Turbomachine including a ceramic matrix composite (CMC) bridge |
EP2986752B1 (de) * | 2013-04-16 | 2021-04-07 | Oerlikon Surface Solutions AG, Pfäffikon | Oxidationsschutzschicht auf chrombasis |
EP3470680A1 (de) * | 2017-10-16 | 2019-04-17 | OneSubsea IP UK Limited | Erosionsbeständige schaufeln für kompressoren |
US11624289B2 (en) * | 2021-04-21 | 2023-04-11 | Rolls-Royce Corporation | Barrier layer and surface preparation thereof |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61174385A (ja) * | 1984-09-10 | 1986-08-06 | Hitachi Ltd | セラミツク被覆耐熱部材及びその製造方法 |
US4852542A (en) * | 1987-10-23 | 1989-08-01 | Adiabatics, Inc. | Thin thermal barrier coating for engines |
US5499905A (en) * | 1988-02-05 | 1996-03-19 | Siemens Aktiengesellschaft | Metallic component of a gas turbine installation having protective coatings |
DE19523637C2 (de) * | 1994-12-27 | 1997-08-14 | Mtu Friedrichshafen Gmbh | Verfahren zur Herstellung einer Korrosionsschutzbeschichtung, Substrat mit einer Korrosionsschutzbeschichtung sowie Verwendung eines solchen Substrats |
WO1996034128A1 (en) * | 1995-04-25 | 1996-10-31 | Siemens Aktiengesellschaft | Metal substrate with an oxide layer and an anchoring layer |
EP0780484B1 (de) * | 1995-12-22 | 2001-09-26 | General Electric Company | Körper mit Hochtemperatur-Schutzschicht und Verfahren zum Beschichten |
WO1997047784A1 (en) * | 1996-06-13 | 1997-12-18 | Siemens Aktiengesellschaft | Article with a protective coating system comprising an improved anchoring layer and its manufacture |
DE19741800A1 (de) * | 1996-09-23 | 1998-03-26 | Fraunhofer Ges Forschung | Schichtsystem, Verfahren zur Herstellung desselben und Metallsubstrat mit einem derartigen Schichtsystem |
US6129988A (en) * | 1998-08-14 | 2000-10-10 | Siemens Westinghouse Power Corporation | Gaseous modification of MCrAlY coatings |
-
1998
- 1998-10-21 US US09/530,639 patent/US6517959B1/en not_active Expired - Fee Related
- 1998-10-21 DE DE59802578T patent/DE59802578D1/de not_active Expired - Lifetime
- 1998-10-21 WO PCT/DE1998/003123 patent/WO1999023277A1/de active IP Right Grant
- 1998-10-21 EP EP98961039A patent/EP1029114B1/de not_active Expired - Lifetime
- 1998-10-21 JP JP2000519128A patent/JP2001521992A/ja not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO9923277A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9951411B2 (en) | 2008-04-21 | 2018-04-24 | Mtu Aero Engines Gmbh | Erosion protection coating |
Also Published As
Publication number | Publication date |
---|---|
DE59802578D1 (de) | 2002-01-31 |
EP1029114B1 (de) | 2001-12-19 |
JP2001521992A (ja) | 2001-11-13 |
US6517959B1 (en) | 2003-02-11 |
WO1999023277A1 (de) | 1999-05-14 |
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