WO2003029508A1 - Metallische komponente mit schutzbeschichtung - Google Patents
Metallische komponente mit schutzbeschichtung Download PDFInfo
- Publication number
- WO2003029508A1 WO2003029508A1 PCT/IB2002/004032 IB0204032W WO03029508A1 WO 2003029508 A1 WO2003029508 A1 WO 2003029508A1 IB 0204032 W IB0204032 W IB 0204032W WO 03029508 A1 WO03029508 A1 WO 03029508A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- metallic component
- base
- layer
- base layer
- coating
- Prior art date
Links
- 239000011253 protective coating Substances 0.000 title description 9
- 239000000463 material Substances 0.000 claims abstract description 36
- 230000003647 oxidation Effects 0.000 claims abstract description 34
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 34
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 29
- 230000007547 defect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 13
- 239000000956 alloy Substances 0.000 claims description 13
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 229910001347 Stellite Inorganic materials 0.000 claims description 6
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000007751 thermal spraying Methods 0.000 claims description 6
- 229910018104 Ni-P Inorganic materials 0.000 claims description 5
- 229910018536 Ni—P Inorganic materials 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000007750 plasma spraying Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910000734 martensite Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910000601 superalloy Inorganic materials 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 claims description 2
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 238000002144 chemical decomposition reaction Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 72
- 239000002585 base Substances 0.000 description 41
- 239000002245 particle Substances 0.000 description 9
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910009043 WC-Co Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000012458 free base Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 229910001096 P alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- C23C28/02—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 only coatings only including layers of metallic material
- C23C28/021—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 only coatings only including layers of metallic material including at least one metal alloy layer
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- 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
- C23C28/02—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 only coatings only including layers of metallic material
- C23C28/021—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 only coatings only including layers of metallic material including at least one metal alloy layer
- C23C28/022—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 only coatings only including layers of metallic material including at least one metal alloy layer with at least one MCrAlX layer
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- 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
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- 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
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- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12937—Co- or Ni-base component next to Fe-base component
-
- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12944—Ni-base component
-
- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
-
- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12972—Containing 0.01-1.7% carbon [i.e., steel]
- Y10T428/12979—Containing more than 10% nonferrous elements [e.g., high alloy, stainless]
-
- 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
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12986—Adjacent functionally defined components
Definitions
- the invention relates to metallic components with a coating that are resistant to high-temperature steam oxidation and / or corrosion, and a method for applying the coating to the metallic component.
- Oxide layers on components of steam power plants can cause various problems. For example, on heated components, such as boiler tubes, the growth of oxide layers reduces the thermal conductivity from the outside or fire side to the inside or steam side of the tube walls. This leads to an increase in the wall temperature, which in turn leads to a creep failure below the
- the oxidation resistance of components is also improved by applying protective coatings.
- the components can be manufactured using relatively inexpensive materials and coated with very thin layers at only low cost.
- Various coatings are known for application to components of steam power plants.
- Turbine components are known from US Pat. No. 5,595,831 which are coated with nickel metal and are protected against corrosion with a protective layer which essentially consists of nickel and zinc. To prevent the zinc from diffusing into the component material, the component surface is pre-coated
- a pipe which is used for example for the superheating of steam in a boiler of a steam power plant.
- the tube has on its inner surface a coating consisting of a nickel-phosphorus alloy.
- the Coating ensures high resistance to oxidation and temperature.
- a metallic component which comprises a coating consisting essentially of aluminum and is applied to the component surface by diffusion.
- the coating ensures high resistance to high-temperature steam oxidation.
- the object of the invention is to provide a metallic component which is resistant to high temperature steam oxidation over a long period of time.
- no cracks should develop in the metallic component, as are observed in components according to the prior art, in which the base material of the component can oxidize after a certain contact time.
- the component should continue to be mechanical Resistant to stress, such as the impact of hard solid particles resulting from oxidation and flaking of oxide particles.
- the metallic component should still have the above-mentioned properties even if it has a complex shape.
- the component is said to be relatively inexpensive compared to the disclosed prior art components.
- Another object of the invention is to provide a method for producing and applying the coating on the surface of the metallic component.
- a metallic component according to the invention is described in claim 1.
- a metallic component that is exposed to high temperature steam is provided with a coating that protects the surface of the metallic component from oxidation and / or corrosion.
- the coating on the surface of the metallic component comprises one or more thin, oxidation-resistant base layers which have a high deformability and are free from cracks and pores.
- the coating further comprises one or more oxidation-resistant cover layers with less deformability, which are applied to the one or more base layers and protect the base layers from mechanical damage and have an overall greater thickness than the base layers.
- the at least one base layer deposited directly on the surface of the base material of the metallic component consists of an oxidation-resistant material and has a high deformability.
- the high deformability of the material results in a Layer that is dense and remains free of any defects such as cracks, pores or voids over a long period of time during which it is exposed to high temperature steam. Due to the crack-free base layer, no oxidizing steam can reach the base material of the component and thus there is an oxidation resistance.
- Such crack-free materials are usually very expensive, which is why the base layer is deposited as a thin layer in order to minimize the amount of material required.
- a thin layer is more susceptible to mechanical damage, such as particle impact, than a thick layer.
- a thicker, oxidation-resistant top layer is applied to the base layer in order to provide mechanical protection. Since the greater thickness of the cover layer requires more material, a less expensive material is chosen for it, so that the overall component costs remain low.
- Layers of inexpensive material are usually more fragile and will tear after a period of time when exposed to high temperature steam. Such cracks can penetrate oxidizing steam through the cover layer.
- the crack-free base layer prevents it from reaching the surface of the base material of the component, since it is mainly the base layer that provides the oxidation resistance.
- the combination of base layer and cover layer according to the invention provides the necessary oxidation resistance and also the resistance to mechanical damage over a long contact time.
- the choice of materials and their thickness also results in a relatively inexpensive protective coating.
- the at least one base layer consists of a superalloy, such as an alloy Nickel or cobalt base or a stellite alloy.
- the superalloy consists of MCrAlY, where the M denotes a metal such as Ni, Co or Fe.
- the base layer is applied in a layer with a thickness of at most 30 micrometers.
- the base layer is approximately 5 microns thick.
- the cover layer consists of a Ni-P alloy, an Al or Al-Si alloy or a Cr alloy>. These are inexpensive materials known for their resistance to oxidation. They are easily applied in larger thicknesses. Because of their fragility, however, they form cracks that can extend through the entire layer to the surface of the top layer.
- the thickness of the cover layer is in the range from 30 to 100 micrometers. This thickness ensures that the base layer is protected against mechanical damage and chemical degradation.
- the cover layer has a thickness in the range from 30 to 70 micrometers.
- a method of applying the protective coating to a metallic component as described above comprises the following steps.
- the thermal spray process is, for example, an HVOF process (High Velocity Oxygen Flame) and immersion or contact with an aqueous electrolyte can be carried out with or without the application of an electrical potential.
- HVOF process High Velocity Oxygen Flame
- the coating layers are subjected to a heat treatment after the application of the base and top layers. This allows interdiffusion between the elements of the layers, which increases the adhesion between the layers and the base material of the metallic component. This measure largely prevents flaking when the layers are exposed to high temperature steam.
- the only Figure 1 shows a cross section through the surface part of a metallic component with a protective coating according to the invention.
- the metallic component can be any component that is exposed to high temperature steam, such as a heat exchanger pipe in a boiler of a steam power plant, a turbine blade, part of the turbine housing or rotor, part of the pipe system for the high temperature steam, etc.
- the metallic one Component 1 consists of a base material 2 and a protective coating with two layers.
- the base material consists of ferritic, martensitic or ferritic-martensitic steel with a suitable creep limit for the Order such as a low alloy steel with 1% Cr or a high alloy steel with 13% Cr. In this example, this base material consists of a steel with 9% Cr.
- the coating has a first layer or base layer 3, which consists of an alloy based on nickel, such as NiCrAlY.
- This layer has a thickness of 5 micrometers, for example.
- NiCrAlY is known for its high basic AI content that it has a high oxidation resistance in a high temperature steam environment. The yttrium content ensures good adhesion to the base material. It is particularly important that the alloy has a high ductility and as such a very high long-term strength against cracking in a high temperature steam environment.
- the NiCrAlY is an expensive material. In order to keep the coating inexpensive, the thickness of the NiCrAlY layer is chosen to be relatively small, in the range between 5 and 30 micrometers. This reduces the cost of the shift.
- the thin base layer is susceptible to mechanical damage and chemical degradation. Because of its small thickness, it could easily be damaged by particles hitting it. For this reason the coating comprises a second or top layer 4.
- the top layer consists of Ni-P with a phosphorus content of about 12%. This layer is much thicker than the base layer 3 with a thickness in the range from 30 to 100 micrometers. It protects the base layer from chemical degradation and mechanical damage from impacting particles.
- Ni-P alloys with a sufficiently high P content of 12% ensure good oxidation resistance. Either during. during the application process or after a certain contact time with high-temperature steam, they tend to develop microcracks. For the multilayer coating according to the invention, however, such microcracks have no consequences for the Total component oxidation resistance. Since the top layer provides mechanical protection as well as a certain resistance to oxidation, the base layer provides the high long-term resistance to oxidation since it does not develop any cracks either during application or as a result of contact with high-temperature steam.
- the base layer of the coating is applied by thermal spraying, for example using an HVOF process (High Velocity Oxygen Flame).
- HVOF process High Velocity Oxygen Flame
- This process is particularly suitable for producing a dense, defect-free layer within a short period of time with a high degree of binding to the substrate. It also has the advantage that it can be sprayed in a normal atmosphere.
- the alternative process of plasma spraying can be carried out in air or in a vacuum chamber. In the latter case, however, the size of the components that can be placed in the chamber is limited.
- the top coat is then applied by an electroless process, such as spraying or dipping in an aqueous solution containing NiP.
- an electroless process such as spraying or dipping in an aqueous solution containing NiP.
- the metallic component with the protective coating can also be subjected to a heat treatment which is carried out at temperatures in the range from 650 to 750 ° C. This promotes the interdiffusion of the elements of the individual layers. It also improves the adhesion between the individual coating layers and between the coating and the base material of the component.
- a second example of a metallic component according to the invention comprises a base material made of 2.25% Cr steel.
- a base layer comprising a stellite alloy or a hard coating material such as WC-Co is applied to the surface of the component. Analogous to the base layer in the first example, this base layer is applied by thermal spraying or plasma spraying and with a thickness of approximately 5 micrometers.
- the stellite alloy ensures a very high oxidation resistance and resists the formation of microcracks on contact with high-temperature steam. Because of its high cost, the material is only applied with a small thickness.
- the thin base layer is then coated with a thicker cover layer, which consists of an aluminum or aluminum-silicon layer. This cover layer in turn provides protection against mechanical damage from the impact of particles and against chemical degradation. Like Ni-P, it also tends to develop cracks through which oxidizing steam can reach the base layer.
- the WC-Co-Primer provides high oxidation resistance. It resists micro-cracking and ensures that the component remains intact even in the event of a cracked top layer.
- the stellite alloy base layer is suitably applied by thermal spraying, such as HVOF spraying or plasma spraying.
- the Al or Al-Si top layer is preferably applied by brushing on a slip or spraying an aqueous solution which contains, together with other elements such as Si or Cr Al-containing particles.
- the coating thickness is preferably 30 to 100 micrometers. Generally, protection against oxidation increases with the thickness of the coating. A heat treatment at 650 to 750 ° C further increases the adhesive strength of the stellite alloy and WC-Co layers.
- metallic components with protective coatings according to the invention comprise more than one base layer or more than one cover layer made of the above-mentioned materials. These can further improve the protective properties of the coating.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laminated Bodies (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003532719A JP2005529231A (ja) | 2001-10-01 | 2002-09-30 | 保護コーティングを有する金属構成成分 |
DE10294477T DE10294477D2 (de) | 2001-10-01 | 2002-09-30 | Metallische Komponente mit Schutzbeschichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/965,793 US6673467B2 (en) | 2001-10-01 | 2001-10-01 | Metallic component with protective coating |
US09/965,793 | 2001-10-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003029508A1 true WO2003029508A1 (de) | 2003-04-10 |
Family
ID=25510492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2002/004032 WO2003029508A1 (de) | 2001-10-01 | 2002-09-30 | Metallische komponente mit schutzbeschichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6673467B2 (de) |
JP (1) | JP2005529231A (de) |
DE (1) | DE10294477D2 (de) |
WO (1) | WO2003029508A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1493843A1 (de) * | 2003-07-03 | 2005-01-05 | ALSTOM Technology Ltd | Beschichtetes Metallbauteil |
US7759871B2 (en) * | 2005-12-16 | 2010-07-20 | General Electric Company | High temperature seal for electric lamp |
US20090286104A1 (en) * | 2008-05-16 | 2009-11-19 | General Electric Company | Multi-layered nickel-phosphorous coatings and processes for forming the same |
US7875200B2 (en) * | 2008-05-20 | 2011-01-25 | United Technologies Corporation | Method for a repair process |
US8609196B2 (en) | 2009-06-10 | 2013-12-17 | Kennametal Inc. | Spallation-resistant multilayer thermal spray metal coatings |
JP5469016B2 (ja) * | 2010-08-24 | 2014-04-09 | トーカロ株式会社 | スートブロワ用噴射管、及びスートブロワ装置 |
US10266958B2 (en) | 2013-12-24 | 2019-04-23 | United Technologies Corporation | Hot corrosion-protected articles and manufacture methods |
PL3147389T3 (pl) | 2015-09-25 | 2019-09-30 | Macdermid Enthone Gmbh | Wielokorozyjny system zabezpieczający dla części dekoracyjnych z wykończeniem chromowym |
CN107034427B (zh) * | 2017-04-12 | 2019-03-15 | 广州特种承压设备检测研究院 | 锅炉受热面耐高温腐蚀的合金涂层及其制备方法 |
KR101990067B1 (ko) * | 2017-12-14 | 2019-06-17 | (주)삼열에너지 | 내마모성이 우수한 롤의 제조방법 |
JP2020084249A (ja) * | 2018-11-21 | 2020-06-04 | 株式会社東芝 | 金属部材の防食方法および防食性金属部材 |
WO2020194358A1 (en) * | 2019-03-26 | 2020-10-01 | Toscotec S.P.A. | Yankee drier and method for manufacturing a yankee drier |
EP3947812A1 (de) * | 2019-03-26 | 2022-02-09 | Toscotec S.p.a. | Verfahren zur herstellung eines stahleinzylindertrockners und stahleinzylindertrockner |
Citations (5)
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JPH0379751A (ja) * | 1989-08-23 | 1991-04-04 | Nippon Tungsten Co Ltd | 超硬合金溶射皮膜の緻密化方法 |
JPH07173635A (ja) * | 1993-12-20 | 1995-07-11 | Suzuki Motor Corp | 金属の表面処理方法 |
DE19728054A1 (de) * | 1997-07-01 | 1999-01-07 | Abb Research Ltd | Rohr mit hoher Oxidations- und Temperaturbeständigkeit |
WO2000070190A1 (de) * | 1999-05-14 | 2000-11-23 | Siemens Aktiengesellschaft | Bauteil sowie verfahren zur herstellung einer schutzbeschichtung auf einem bauteil |
EP1122329A1 (de) * | 2000-02-07 | 2001-08-08 | General Electric Company | Verfahren zum Aufbringen einer Schutzschicht auf ein Metallsubstrat und daraus hergestellte Artikel |
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US3869779A (en) | 1972-10-16 | 1975-03-11 | Nasa | Duplex aluminized coatings |
US3849865A (en) | 1972-10-16 | 1974-11-26 | Nasa | Method of protecting the surface of a substrate |
US4198442A (en) * | 1977-10-31 | 1980-04-15 | Howmet Turbine Components Corporation | Method for producing elevated temperature corrosion resistant articles |
US4371570A (en) | 1980-02-11 | 1983-02-01 | United Technologies Corporation | Hot corrosion resistant coatings |
EP0186266A1 (de) | 1984-11-19 | 1986-07-02 | Avco Corporation | Verschleissfestes Überzugssystem |
US5595831A (en) | 1994-01-28 | 1997-01-21 | Clark; Eugene V. | Cadium-free corrosion protection for turbines |
WO1996034130A1 (en) | 1995-04-27 | 1996-10-31 | Siemens Aktiengesellschaft | Metal component with a high-temperature protection coating system and a method of coating the component |
DE19815473A1 (de) | 1998-04-07 | 1999-10-14 | Ghh Borsig Turbomaschinen Gmbh | Heißgasführendes Gassammelrohr einer Gasturbine |
-
2001
- 2001-10-01 US US09/965,793 patent/US6673467B2/en not_active Expired - Lifetime
-
2002
- 2002-09-30 JP JP2003532719A patent/JP2005529231A/ja active Pending
- 2002-09-30 DE DE10294477T patent/DE10294477D2/de not_active Ceased
- 2002-09-30 WO PCT/IB2002/004032 patent/WO2003029508A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0379751A (ja) * | 1989-08-23 | 1991-04-04 | Nippon Tungsten Co Ltd | 超硬合金溶射皮膜の緻密化方法 |
JPH07173635A (ja) * | 1993-12-20 | 1995-07-11 | Suzuki Motor Corp | 金属の表面処理方法 |
DE19728054A1 (de) * | 1997-07-01 | 1999-01-07 | Abb Research Ltd | Rohr mit hoher Oxidations- und Temperaturbeständigkeit |
WO2000070190A1 (de) * | 1999-05-14 | 2000-11-23 | Siemens Aktiengesellschaft | Bauteil sowie verfahren zur herstellung einer schutzbeschichtung auf einem bauteil |
EP1122329A1 (de) * | 2000-02-07 | 2001-08-08 | General Electric Company | Verfahren zum Aufbringen einer Schutzschicht auf ein Metallsubstrat und daraus hergestellte Artikel |
Also Published As
Publication number | Publication date |
---|---|
US20030064244A1 (en) | 2003-04-03 |
DE10294477D2 (de) | 2004-11-04 |
US6673467B2 (en) | 2004-01-06 |
JP2005529231A (ja) | 2005-09-29 |
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