EP3153602A1 - Couche céramique dvc avec sous-couche céramique poreuse sous-jacente - Google Patents

Couche céramique dvc avec sous-couche céramique poreuse sous-jacente Download PDF

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Publication number
EP3153602A1
EP3153602A1 EP15188703.1A EP15188703A EP3153602A1 EP 3153602 A1 EP3153602 A1 EP 3153602A1 EP 15188703 A EP15188703 A EP 15188703A EP 3153602 A1 EP3153602 A1 EP 3153602A1
Authority
EP
European Patent Office
Prior art keywords
layer
ceramic
sublayer
porous ceramic
layer system
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.)
Withdrawn
Application number
EP15188703.1A
Other languages
German (de)
English (en)
Inventor
Arturo Flores Renteria
Werner Stamm
Dimitrios Zois
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP15188703.1A priority Critical patent/EP3153602A1/fr
Publication of EP3153602A1 publication Critical patent/EP3153602A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
    • F01D5/288—Protective coatings for blades

Definitions

  • the invention relates to a ceramic layer system which has an outer ceramic thermal barrier coating with vertical cracks and an underlying high porous ceramic sublayer.
  • Components for the use at high temperatures are coated with metallic coatings in order to protect them against oxidation and corrosion.
  • the protection against the heat is performed by ceramic coatings, which are based mostly on zirconia.
  • TBC thermal barrier coatings
  • a denser ceramic outer coating Preferably this coating will be deposited as a segmented TBC to demonstrate compliance and strain tolerance. Additionally segmented TBCs have shown significantly lower erosion rates compared to their porous counterparts. That means for the same chemistry a porous coating will show more than 3x the erosion rate compared to the segmented's one.
  • the figure shows an example of the invention.
  • the novelty lies on the usage of DVC microstructure on top of a porous coating.
  • the system comprises of a porous, especially partially stabilized zirconia as the low conductivity lower, especially thicker layer and a high toughness DVC upper, especially thin layer of especially partially stabilized zirconia (especially 8YSZ) to provide the high temperature capability.
  • the thickness of the upper DVC layer is preferably between 50 ⁇ m - 250 ⁇ m.
  • the same chemistry between the two coatings can enhance their bonding.
  • Appropriate preheating of the already deposited porous PSZ will prepare its surface to receive the fully molten particles for the DVC and due to the high local temperatures attained during spraying will allow better diffusion between the two similar materials.
  • the two coatings can be obtained by using the same high power torch and by appropriate tailoring of the powder particle size and spraying parameters.
  • the new coating system comprises segmented partially stabilized zirconia on porous partially stabilized zirconia (PSZ).
  • PSD porous partially stabilized zirconia
  • the segmented coating is thinner than the porous.
  • the porous can be HHP or coating of other similar or higher porosity for increased thermal protection.
  • the bond coat can be a thermally sprayed typical MNiCoCrAlY.
  • the figure shows a metallic substrate 4 which is especially made of a nickel- or cobalt based superalloy.
  • a metallic bond coat 7 which is preferably made of a NiCoCrAlY alloy.
  • TGO thermal grown oxide layer
  • TGO thermal grown oxide
  • the ceramic layer is especially a bilayer and comprises a underlying porous ceramic sublayer 10.
  • the porous ceramic sublayer 10 has a high porosity and is thicker, that means at least 20% thicker than the outer ceramic layer 13.
  • the porosity of the porous ceramic sublayer 10 is mostly caused by pores.
  • the porosity of the porous ceramic sublayer is between 8% - 20%.
  • the porous ceramic sublayer preferably has a thickness from 50 ⁇ m to 500 ⁇ m.
  • the porous ceramic sublayer 10 has a much higher porosity than the outermost ceramic sublayer 13, especially higher than 50% (relative), very especially higher than 70% (relative) of the outer ceramic outermost layer and shows vertical cracks 16.
  • the porosity of the outer ceramic layer 13 is especially lower than 6%, especially lower than 5%, wherein the outer ceramic layer is especially the outermost layer.
  • the vertical cracks 16 in the outermost ceramic layer (13) are mostly and especially at least 90% only in the outermost layer 13.
  • the outermost layer 13 has a thickness of 5 ⁇ m to 250 ⁇ m.
  • the ceramic for the porous ceramic sublayer 10 and the outer layer 13 is preferably zirconia (ZrO 2 ), which are both preferably stabilized by Yttria (Y 2 O 3 ).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
EP15188703.1A 2015-10-07 2015-10-07 Couche céramique dvc avec sous-couche céramique poreuse sous-jacente Withdrawn EP3153602A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15188703.1A EP3153602A1 (fr) 2015-10-07 2015-10-07 Couche céramique dvc avec sous-couche céramique poreuse sous-jacente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15188703.1A EP3153602A1 (fr) 2015-10-07 2015-10-07 Couche céramique dvc avec sous-couche céramique poreuse sous-jacente

Publications (1)

Publication Number Publication Date
EP3153602A1 true EP3153602A1 (fr) 2017-04-12

Family

ID=54292621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15188703.1A Withdrawn EP3153602A1 (fr) 2015-10-07 2015-10-07 Couche céramique dvc avec sous-couche céramique poreuse sous-jacente

Country Status (1)

Country Link
EP (1) EP3153602A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283278A2 (fr) * 2001-08-02 2003-02-12 Siemens Westinghouse Power Corporation Revêtement de barrière thermique segmenté et procédé pour sa fabrication
US20050170200A1 (en) * 2004-02-03 2005-08-04 General Electric Company Thermal barrier coating system
US20120276355A1 (en) * 2011-04-27 2012-11-01 Sansom David G Damage resistant thermal barrier coating and method
EP2865781A1 (fr) * 2013-10-22 2015-04-29 Siemens Aktiengesellschaft Couche céramique à deux couches dotée de microstructures différentes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1283278A2 (fr) * 2001-08-02 2003-02-12 Siemens Westinghouse Power Corporation Revêtement de barrière thermique segmenté et procédé pour sa fabrication
US20050170200A1 (en) * 2004-02-03 2005-08-04 General Electric Company Thermal barrier coating system
US20120276355A1 (en) * 2011-04-27 2012-11-01 Sansom David G Damage resistant thermal barrier coating and method
EP2865781A1 (fr) * 2013-10-22 2015-04-29 Siemens Aktiengesellschaft Couche céramique à deux couches dotée de microstructures différentes

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