EP2728035B1 - Procédé destiné à la modification des propriétés de surface de composants - Google Patents

Procédé destiné à la modification des propriétés de surface de composants Download PDF

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Publication number
EP2728035B1
EP2728035B1 EP12190803.2A EP12190803A EP2728035B1 EP 2728035 B1 EP2728035 B1 EP 2728035B1 EP 12190803 A EP12190803 A EP 12190803A EP 2728035 B1 EP2728035 B1 EP 2728035B1
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EP
European Patent Office
Prior art keywords
component
temperature
layer material
layer
nickel
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EP12190803.2A
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German (de)
English (en)
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EP2728035A1 (fr
Inventor
Horst Bronn
Katrin Friedberger
Josef Linska
Bernd Daniels
Michael Strasser
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MTU Aero Engines AG
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MTU Aero Engines AG
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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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/02—Pretreatment of the material to be coated
    • 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
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • 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
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • C23C10/08—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases only one element being diffused
    • 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
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • C23C10/14—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases more than one element being diffused in one step
    • 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
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • C23C10/16—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases more than one element being diffused in more than one step
    • 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
    • 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
    • C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
    • 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
    • C23C10/20—Solid state diffusion of only metal elements or silicon into metallic material surfaces using liquids, e.g. salt baths, liquid suspensions only one element being diffused
    • C23C10/22—Metal melt containing the element to be diffused
    • 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
    • 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
    • C23C10/60—After-treatment
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate

Definitions

  • the present invention relates to a method for changing the surface properties of components, which are built up incrementally in layers from a component material, for example, and a correspondingly produced component.
  • Generative manufacturing processes in which a workpiece is built up from material increments in layers, are increasingly used in the prior art not only for the production of prototypes, but also for the production of components in small series.
  • additive manufacturing processes are also suitable for the production of components for which other manufacturing processes cannot be carried out or can only be carried out with considerable difficulty.
  • components manufactured by generative processes should also have a corresponding surface quality in the form of low roughness.
  • due to the manufacturing process this is not the case immediately after the additive manufacturing, since the layer-by-layer design of the component on the surfaces results in steps and roughness according to the application of the layers.
  • Examples of methods for changing the surface properties of components, in which the surface of the component is coated with a layer material and the coated component is subjected to a heat treatment, are from US 2011/117385 A1 , of the US 2007/0269676 A1 and the DE 10 2005 059299 A1 known. Methods involving deposition in an immersion bath are disclosed in US Pat EP 0 861 919 A2 and EP 1 930 477 A1 known.
  • the desired smooth surface should be able to be produced in a simple and effective manner and in particular all surfaces of a component, that is to say surfaces of cavities and the like, should be machinable.
  • the method should also be usable in the generative production of a component for smoothing the surfaces.
  • a coating to the component to be machined, the coating containing components that melt at a lower temperature than the component material or form components with the component material that have a lower melting temperature than the component material and that this is coated accordingly
  • Component is subjected to a heat treatment, so that a diffusion between the coating and the component is made possible.
  • the combination of the applied coating with a lower melting point or components lowering the melting point on the one hand and the heat treatment on the other hand leads to diffusion processes between the coating and the component and / or to a melting of the coating and / or the original component surface, which leads to a leveling of the original rough surface of the component leads.
  • the layer material can be selected from the same material as the component material, with at least one element additionally being added which lowers the melting point.
  • the layer material can also be formed by only one component of the component material, namely preferably the main component of the component material.
  • the main alloy component in the form of a technically pure metal could therefore be selected as the layer material.
  • the layer can be formed from technically pure nickel as the main component of the nickel-based alloy.
  • Technically pure nickel is understood here to mean a material which consists of almost 100% nickel, but which may have impurities to the extent of the technical circumstances.
  • a nickel-based alloy alloyed with a melting point-lowering element can also be selected, wherein boron and / or phosphorus, for example, can be selected as the melting point-lowering elements.
  • Nickel-based alloys are to be understood as those alloys which contain nickel as the constituent with the largest proportion and which in particular comprise alloy elements which enable high-temperature use.
  • Inconel IN 718 can be named for this.
  • the layer material is applied in liquid form, a chemical reaction in an immersion bath being selected, for example in order to apply a nickel layer.
  • a chemical reaction in an immersion bath being selected, for example in order to apply a nickel layer.
  • Such a method is usually known as chemical nickel plating.
  • the heat treatment can be carried out at a temperature in the range of the melting temperature of the layer material and below the melting temperature of the component material.
  • the temperature can be selected in a range which ranges from a temperature 30% below the melting temperature to a temperature of 5% above the melting temperature of the layer material.
  • the heat treatment takes place in the area of the solution annealing temperature of the component material.
  • the heat treatment of a layer of chemical nickel can also be carried out at a temperature just above the melting temperature, so that the coating and / or the original surface of the component melts.
  • this can be done by a property-sensitive removal method, such as etching, so that the original surface can be exposed again.
  • etching a property-sensitive removal method, such as etching
  • a correspondingly manufactured component in particular an additive manufactured component, therefore has an edge zone which either comprises a coating or has at least formed a diffusion zone when the coating has been removed again.
  • the coating of this component has the component material provided with a melting point lowering element or a coating of a component of the component material.
  • the Figure 1 shows as an example the surface of a generatively produced component 1, which has a rough surface 2 after the incremental, layered structure.
  • the component can have been formed by selective laser sintering, by stereolithographic methods, by layer-by-layer gluing or melting.
  • the layer-by-layer production results in roughness on the surfaces.
  • the method of the present invention used to process the surface can be any method of the present invention used to process the surface.
  • the Figure 2 shows the sectional view of component 1 Figure 1 after applying a coating 3, for example by chemical nickel plating.
  • a coating 3 for example by chemical nickel plating.
  • the component 1 to be nickel-plated is immersed in a suitable liquid, so that nickel is deposited on the surface 2 of the component 1 by a corresponding chemical reaction of the components contained in the liquid.
  • the layer thicknesses of the deposited chemical nickel can be varied in the range from 1 ⁇ m to 100 ⁇ m.
  • the component is subjected to a heat treatment which makes it possible for ingredients to diffuse exchange between the layer 3 and the component 1.
  • the heat treatment temperature can preferably also be selected such that the temperature is in the range of the melting temperature of the layer material, so that the rough surface 2 can be easily melted.
  • the diffusion processes and / or the melting of the surface 2 lead to a change in the surface properties, as shown schematically in FIG Figure 3 is shown.
  • the interface between the layer 3 and the component 1 now represents a smooth interface 4, since the diffusion processes and / or the melting result in a flattening of the above component areas.
  • such a heat-treated layer 3 can, for example, be better machinable and / or solderable and / or chemically and / or mechanically removable.
  • the component can be manufactured according to the state of manufacture Figure 3 Find use.
  • Etching processes are suitable as property-sensitive removal processes, the etching agent being matched to the composition of the coating.
  • the removal of material can be stopped after reaching the interface 4, so that the component 2 with the smoothed surface 5 is present.
  • the correspondingly manufactured components are thus characterized either by the presence of a coating on the surface or, in the case of removal of the coating after the heat treatment has been carried out, by a diffusion zone in the edge zone of component 1 due to the diffusion with the previously existing coating.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemically Coating (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Claims (9)

  1. Procédé permettant de modifier des propriétés de surface, en particulier de lisser la surface d'un composant, caractérisé en ce que
    - la surface du composant est revêtue d'un matériau en couches, lequel est appliqué sous forme liquide et est déposé par réaction chimique dans un bain d'immersion, et lequel présente une composition qui contient au moins un élément constitutif, lequel
    - fond à une température inférieure à celle du matériau de composant ou
    - forme au moins un constituant avec le matériau de composant, lequel constituant présente une température de fusion inférieure à celle du matériau de composant, et en ce que
    - le composant revêtu est soumis à un traitement thermique qui est effectué dans la plage de la température de recuit en solution du matériau de composant, de sorte que des processus de diffusion peuvent se produire entre le revêtement et le composant,
    - le matériau de composant étant un alliage métallique, et le matériau en couches étant un alliage métallique ou un métal techniquement pur ; et
    - le revêtement étant éventuellement éliminé à nouveau après le traitement thermique par un procédé d'élimination sensible aux propriétés.
  2. Procédé selon la revendication 1, caractérisé en ce que le matériau en couches est un matériau de composant pourvu d'au moins un élément abaissant le point de fusion.
  3. Procédé selon la revendication 1, caractérisé en ce que le matériau en couches est formé par le constituant principal du matériau de composant.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le matériau de composant est un alliage à base de nickel, et le matériau en couches est en nickel ou le matériau en couches est un alliage à base de nickel allié avec au moins un élément abaissant le point de fusion.
  5. Procédé selon la revendication 4, caractérisé en ce que l'élément abaissant le point de fusion est le bore et/ou le phosphore.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que le traitement thermique est réalisé dans une plage de température de fusion du matériau en couches et en dessous de la température de fusion du matériau de composant, est réalisé en particulier dans une plage de température qui est comprise entre une température de 30 % inférieure à la température de fusion du matériau en couches et une température supérieure de 5 % à la température de fusion du matériau en couches.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que, dans une couche déposée par nickelage chimique, le traitement thermique est effectué à une température supérieure à la température de fusion du nickel déposé chimiquement.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que le revêtement est éliminé à nouveau par gravure après le traitement thermique.
  9. Procédé selon l'une des revendications précédentes, caractérisé en ce que le procédé de fabrication additive d'un composant, selon lequel le composant est réalisé progressivement en couches à partir d'un matériau de composant, est mis en œuvre afin de lisser, au moins partiellement, la surface de composant.
EP12190803.2A 2012-10-31 2012-10-31 Procédé destiné à la modification des propriétés de surface de composants Active EP2728035B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12190803.2A EP2728035B1 (fr) 2012-10-31 2012-10-31 Procédé destiné à la modification des propriétés de surface de composants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12190803.2A EP2728035B1 (fr) 2012-10-31 2012-10-31 Procédé destiné à la modification des propriétés de surface de composants

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EP2728035A1 EP2728035A1 (fr) 2014-05-07
EP2728035B1 true EP2728035B1 (fr) 2020-07-01

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104630697B (zh) * 2014-12-17 2017-08-25 国家电网公司 一种锌铝镁三元共渗层及制备方法
CN104630695B (zh) * 2015-01-27 2017-08-25 国家电网公司 一种用于高比例共渗层的锌铝合金共渗剂

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861919A2 (fr) * 1997-01-31 1998-09-02 Sermatech International Inc. Procédé pour enlever des couches superficielles de revêtements métalliques
EP1930477A1 (fr) * 2006-12-07 2008-06-11 General Electric Company Procédé pour l'élimination sélective de revêtements à partir de substrats métalliques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7335427B2 (en) * 2004-12-17 2008-02-26 General Electric Company Preform and method of repairing nickel-base superalloys and components repaired thereby
US20070269676A1 (en) * 2006-05-19 2007-11-22 Singer Kevin M Diffusion barrier layer and method of making the same, and wear resistant article with the diffusion barrier layer and method of making the same
US8453325B2 (en) * 2009-11-18 2013-06-04 United Technologies Corporation Method of repair on nickel based HPT shrouds

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861919A2 (fr) * 1997-01-31 1998-09-02 Sermatech International Inc. Procédé pour enlever des couches superficielles de revêtements métalliques
EP1930477A1 (fr) * 2006-12-07 2008-06-11 General Electric Company Procédé pour l'élimination sélective de revêtements à partir de substrats métalliques

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