EP2202328A1 - Processus pour obtenir un revêtement protecteur pour hautes températures avec rugosité élevée et revêtement obtenu - Google Patents

Processus pour obtenir un revêtement protecteur pour hautes températures avec rugosité élevée et revêtement obtenu Download PDF

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Publication number
EP2202328A1
EP2202328A1 EP08380344A EP08380344A EP2202328A1 EP 2202328 A1 EP2202328 A1 EP 2202328A1 EP 08380344 A EP08380344 A EP 08380344A EP 08380344 A EP08380344 A EP 08380344A EP 2202328 A1 EP2202328 A1 EP 2202328A1
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Prior art keywords
layer
projection
mcraly
process according
thermal
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EP08380344A
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German (de)
English (en)
Inventor
Iñaki FAGOAGA ALTUNA
Georgiy Barykin
Maria Parco Camacaro
Carlos VAQUERO GONZÁLEZ
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Fundacion Tecnalia Research and Innovation
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Fundacion Inasmet
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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
    • 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
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
    • 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
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C23C4/08—Metallic material containing only metal elements
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/126—Detonation spraying
    • 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
    • C23C4/18—After-treatment

Definitions

  • the present invention is comprised within the field of protective coatings against the corrosion-oxidation of metal components subjected to high temperatures such as for example the blades of a gas turbine.
  • the invention particularly relates to a process which allows obtaining a new improved coating.
  • MCrAly-based coatings wherein M is a metal selected from Ni, Co and Fe, are normally used for protecting metal components which are subjected to high temperatures, such as for example the blades of a gas turbine.
  • the object of these coatings is to protect said metal components or substrates against the corrosion and oxidation occurring at high temperature, for which reason a layer formed by a ceramic heat insulator or thermal barrier is occasionally applied thereon.
  • MCrAly-based coatings must work as protective barriers against corrosion and oxidation, and additionally as intermediate adaptation or bond layers for fixing the layer formed by a ceramic heat insulator or thermal barrier.
  • These coatings are obtained by deposition by means of the different thermal projection techniques and especially by means of vacuum plasma spray (VPS) techniques, air plasma spray (APS) techniques, high velocity oxygen fuel (HVOF) thermal projection techniques or detonation processes.
  • VPS vacuum plasma spray
  • APS air plasma spray
  • HVOF high velocity oxygen fuel
  • Application US2007/1190900 describes a process in which an attempt is made to generate a rough surface in the deposited MCrAlY layer by means of a post-treatment by means of ionic bombardment, whereby regardless of the technical difficulty, equipment difficulty or costs which it involves, only limited improvements in the surface roughness have been achieved, always less than 10 microns Ra.
  • Another alternative of the state of the art to achieve said features is obtaining coatings from MCrAly powders with a size larger than the normal one (> 65 microns) by using high frequency pulsed detonation (HFPD) techniques.
  • HFPD high frequency pulsed detonation
  • a coating with higher roughness is thereby generated although this entails a greater internal porosity, such that said approach must be used only in the upper layers of the MCrAly coating as part of a layer with a double structure, result of the use of two different types of powders.
  • the added complexity that said approximation involves due to the use of specific and different powders to form the rough MCrAlY layer is evident.
  • the invention relates to a new process which can be carried out continuously and simply, using a single type of powder, to obtain a protective coating for protecting against oxidation at high temperature on a substrate.
  • the process hereinafter the process of the invention, comprises a step pf thermal projection of MCrAlY powder to obtain an MCrAlY layer on said substrate by means of a high frequency pulsed detonation (HFPD) technique, in which at least two different projection distances are used.
  • HFPD high frequency pulsed detonation
  • M is selected from the group consisting of Ni, Co, Fe and their mixtures.
  • the protective coating obtained by means of the process of the invention forms an additional aspect of the present invention which is also described in detail.
  • This coating comprises an MCrAlY layer with high density and low oxidation.
  • This layer has in turn an outer part having a high surface roughness equal to or greater than 10 microns Ra, and is characterised in that its microstructure (porosity and internal cohesion) differs between the inner part of the layer and the outer part of the layer.
  • the part which is in direct contact with the substrate on which the protective coating is deposited is referred to as the inner part of the MCrAlY layer and the opposite part of the MCrAlY layer which is optionally in contact with a second layer of the coating is referred to as the outer part.
  • This second layer is hereinafter also referred to as thermal barrier layer.
  • the process of the invention is carried out using high frequency pulse detonation (HFPD) projection techniques which are conventional and are described for example in WO97/23299 , WO97/23301 , WO97/23302 , WO97/23303 , WO98/29191 , WO99/12653 , WO99/37406 and WO01/30506 .
  • HFPD high frequency pulse detonation
  • Electronically controllable high frequency explosions are thus achieved which can exceed 100 Hz compared to the frequencies of a D-gun process working between 1 and 10 Hz.
  • the generation of high or low temperature explosions is carried out using combustion gases such as propane, propylene, methane or natural gas, with oxygen, and controlling the mixture of gases involved in each explosion.
  • the material to be deposited is introduced into the barrel in the form of powder, accompanied by a carrier gas through a supply port.
  • Said powder merges with the mixture of explosive gases in said barrel and as a consequence of the explosive process, it is entrained, heated and accelerated by the generated gaseous flow until impacting on the substrate to be coated, giving rise to the formation of the MCrAlY layer by means of a thermal projection process.
  • the mentioned process occurs cyclically to each explosion.
  • MCrAlY powders by means of HFPD can easily be controlled and optimised by a person skilled in the art to achieve a high density, a good compaction and adherence of the coating with minimal internal oxidation, thus requiring a low temperature of the detonation process and a low oxygen environment during the projection.
  • Detonation frequencies greater than 60 Hz are generally used to improve the productivity of the process and reduce the volume of gases used in each explosion.
  • the MCrAlY powders are introduced into the barrel of the detonation gun at a point close to its outlet, at a distance from the detonation chamber between 100 and 500 mm.
  • the process of the invention comprises the use of at least two different projection distances.
  • At least one first projection distance greater than 100 mm is used to form the inner part of the MCrAlY layer of the protective coating in direct contact with the substrate, and another subsequent distance lower than 100 mm is used to form the outer part of the MCrAlY layer.
  • the process of the invention is carried out using the known parameters which are described in patent application W02006/042872 which can be optimised to obtain a layer with high density, cohesion and reduced oxidation.
  • the parameters can be the same or be varied.
  • the projection distances can be varied forming as many sub-parts of the MCrAlY layer as projection distances are used in the process of the invention.
  • such process is carried out using (i) a first projection distance greater than 100 mm, (ii) a last projection distance less than 100 mm and (iii) at least one intermediate projection distance between the first and the last distance.
  • the use of these projection distances can be made according to single continuous sequence without needing interruptions, such that the change of distance can be made during the projection without needing to turn off the gun.
  • the inventors of the present invention have observed that in the process of the invention the use of projection distances lower than 100 mm generate a greater degree of porosity and lower internal cohesion in the deposited layer. This is due to the inclusion within the layer of non-molten particles which are larger in size or are deposited at a lower impact speed (peripheral area of the projection beam) but which nevertheless have enough energy to remain adhered during the cyclic deposition process.
  • the projection distances are greater than 100 mm the mentioned non-molten particles do not form part of the coating, given that the actual explosive process generates cyclic gas flows eliminating the possible weakly adhered non-molten particles from the surface which may have been deposited in previous cycles. The result is a layer with higher density and internal cohesion, formed only by the deposited particles with higher kinetic energy which have withstood the gas flow of each explosion.
  • the MCrAlY layer is generally used as a bond layer for a thermal barrier layer in which case the presence of an especially rough surface (indicatively Ra > 10 microns) which improves the adherence and mechanical compatibility between both layers is of interest.
  • the projection distance is modified during the last deposition cycles of the step of thermal projection, typically by means of the suitable robot handling programme, to obtain the MCrAlY layer which is especially rough and suitable to act as a bond layer for ceramic thermal barrier layers.
  • the cyclic nature of the detonation process allows the heat flow applied on the substrate-layer during the deposition to be less than that used in alternative techniques such as plasma projection or HVOF, enabling the projection at very short distances ( ⁇ 100 mm) without local overheating.
  • the process of the invention optionally further comprises carrying out a step of heat treatment of the MCrAlY layer in an inert atmosphere, for example a N2 atmosphere.
  • This treatment promotes the diffusion process leading to a microstructure of the MCrAlY layer more suitable for protecting against corrosion-oxidation under extreme conditions.
  • the process can further comprise a step of thermal projection or deposition of a layer of a heat insulating material on the MCrAlY layer.
  • This step of thermal projection or deposition of the thermal barrier layer is carried out by means of a suitable conventional technique, which can be selected from vacuum plasma spray (VPS), air plasma spray (APS), physical vapour deposition (PVD), high velocity oxygen fuel (HVOF) thermal projection, detonation and high frequency pulsed detonation (HFPD).
  • a suitable conventional technique can be selected from vacuum plasma spray (VPS), air plasma spray (APS), physical vapour deposition (PVD), high velocity oxygen fuel (HVOF) thermal projection, detonation and high frequency pulsed detonation (HFPD).
  • the heat insulating material, forming said thermal barrier is formed by a ceramic normally belonging to the zirconia family such as Zr02-Y203, ZrO2-MgO, ZrO2-CaO among others.
  • Said powder is, in a particular embodiment, a CoNiCrAlY type alloy for example.
  • the use of a single type of powder allows the process of the new invention to be optionally carried out in a single operation. In this sense, the deposition of the mentioned MCrAly coating is optionally carried out according to a single and continuous sequence, without there being interruptions linked to changes of powder or of equipment.
  • the resulting process is simpler, faster, cheaper and allows obtaining a coating comprising a MCrAlY layer with high density, internal cohesion and reduced oxidation in the inner part thereof and simultaneously a surface in the outer part characterised by a high roughness.
  • the protective coating obtained according to the process of the present invention forms an additional aspect of the present invention.
  • Said coating comprises an MCrAlY layer the thickness of which can vary within wide margins. Said thickness is generally comprised between 50 and 200 microns. The relative thickness of each of the parts can also vary and depends in each case, among other factors, on the conditions of the process for obtaining it, such as for example on the projection time during which each of the at least two different projection distances is used.
  • the coating of the invention comprises an MCrAlY layer which is characterised by having a high roughness (indicatively greater than or equal to 10 microns Ra) in its outer part.
  • the coating of the invention comprises, in addition to the MCrAlY layer with said roughness, a thermal barrier layer thereon.
  • Said thermal barriers have a porous nature and can be deposited using any conventional thermal projection or deposition technique as has already been mentioned above.
  • CoNiCrAlY powders (Praxair Ni-535-4) were used.
  • the projection was carried out by means of the high frequency pulsed detonation HFPD technique with the following parameters:
  • the detonation barrel was handled in an automated manner at an initial distance of 150 mm to generate the dense microstructure of the inside (1) and subsequently at a distance of 70 mm to give rise to the rough surface (2).
  • CoNiCrAlY coating comprising a compact structure with one layer, the outer part of which has a surface roughness (microns) of Ra 11 and Rz 55.7 (depth of roughness).
  • CoNiCrAlY (Sulzer 4700) powders were used.
  • the projection was carried out by means of the high frequency detonation technique with the following parameters:
  • the detonation barrel was handled in an automated manner at an initial distance of 150 mm to generate the dense microstructure of the inside (1) and subsequently at a distance of 70 mm to give rise to the rough surface (2).
  • CoNiCrAlY coating comprising a compact structure with one layer, the outer part of which has a surface roughness (microns) of Ra 13.9 and Rz 74.2 .
  • microstructure resulting from the metallographic preparation of a section of said coating is shown in Figure 2 .
EP08380344A 2008-12-26 2008-12-26 Processus pour obtenir un revêtement protecteur pour hautes températures avec rugosité élevée et revêtement obtenu Withdrawn EP2202328A1 (fr)

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Cited By (15)

* Cited by examiner, † Cited by third party
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US8222023B2 (en) 2006-03-15 2012-07-17 Micronics, Inc. Integrated nucleic acid assays
US9151175B2 (en) 2014-02-25 2015-10-06 Siemens Aktiengesellschaft Turbine abradable layer with progressive wear zone multi level ridge arrays
US9243511B2 (en) 2014-02-25 2016-01-26 Siemens Aktiengesellschaft Turbine abradable layer with zig zag groove pattern
US9895692B2 (en) 2010-01-29 2018-02-20 Micronics, Inc. Sample-to-answer microfluidic cartridge
US10065186B2 (en) 2012-12-21 2018-09-04 Micronics, Inc. Fluidic circuits and related manufacturing methods
US10087440B2 (en) 2013-05-07 2018-10-02 Micronics, Inc. Device for preparation and analysis of nucleic acids
US10190435B2 (en) 2015-02-18 2019-01-29 Siemens Aktiengesellschaft Turbine shroud with abradable layer having ridges with holes
US10189082B2 (en) 2014-02-25 2019-01-29 Siemens Aktiengesellschaft Turbine shroud with abradable layer having dimpled forward zone
US10196920B2 (en) 2014-02-25 2019-02-05 Siemens Aktiengesellschaft Turbine component thermal barrier coating with crack isolating engineered groove features
EP3461925A1 (fr) * 2017-09-29 2019-04-03 General Electric Technology GmbH Procédé de fabrication d'un revêtement
US10386377B2 (en) 2013-05-07 2019-08-20 Micronics, Inc. Microfluidic devices and methods for performing serum separation and blood cross-matching
US10408079B2 (en) 2015-02-18 2019-09-10 Siemens Aktiengesellschaft Forming cooling passages in thermal barrier coated, combustion turbine superalloy components
US10436713B2 (en) 2012-12-21 2019-10-08 Micronics, Inc. Portable fluorescence detection system and microassay cartridge
US10518262B2 (en) 2012-12-21 2019-12-31 Perkinelmer Health Sciences, Inc. Low elasticity films for microfluidic use
EP3452231A4 (fr) * 2016-05-05 2020-01-01 National Research Council of Canada Revêtements métalliques poreux utilisant une pulvérisation induite par ondes de choc

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WO1997023303A1 (fr) 1995-12-26 1997-07-03 Aerostar Coatings, S.L. Appareil d'alimentation en gaz de type labyrinthe et procede de canon a detonation
WO1997023299A1 (fr) 1995-12-26 1997-07-03 United Technologies Corporation Appareil de type canon a detonation et procede s'y rapportant
WO1997023302A1 (fr) 1995-12-26 1997-07-03 Aerostar Coatings, S.L. Procede et appareil d'application de revetements multicouches par detonation
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US10221716B2 (en) 2014-02-25 2019-03-05 Siemens Aktiengesellschaft Turbine abradable layer with inclined angle surface ridge or groove pattern
US10189082B2 (en) 2014-02-25 2019-01-29 Siemens Aktiengesellschaft Turbine shroud with abradable layer having dimpled forward zone
US10323533B2 (en) 2014-02-25 2019-06-18 Siemens Aktiengesellschaft Turbine component thermal barrier coating with depth-varying material properties
US9243511B2 (en) 2014-02-25 2016-01-26 Siemens Aktiengesellschaft Turbine abradable layer with zig zag groove pattern
US9920646B2 (en) 2014-02-25 2018-03-20 Siemens Aktiengesellschaft Turbine abradable layer with compound angle, asymmetric surface area ridge and groove pattern
US9151175B2 (en) 2014-02-25 2015-10-06 Siemens Aktiengesellschaft Turbine abradable layer with progressive wear zone multi level ridge arrays
US10190435B2 (en) 2015-02-18 2019-01-29 Siemens Aktiengesellschaft Turbine shroud with abradable layer having ridges with holes
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EP3452231A4 (fr) * 2016-05-05 2020-01-01 National Research Council of Canada Revêtements métalliques poreux utilisant une pulvérisation induite par ondes de choc
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