EP3519374A1 - Procédé de revêtement amélioré de pièces en cmc dans un dispositif de pulvérisation par plasma - Google Patents

Procédé de revêtement amélioré de pièces en cmc dans un dispositif de pulvérisation par plasma

Info

Publication number
EP3519374A1
EP3519374A1 EP17800436.2A EP17800436A EP3519374A1 EP 3519374 A1 EP3519374 A1 EP 3519374A1 EP 17800436 A EP17800436 A EP 17800436A EP 3519374 A1 EP3519374 A1 EP 3519374A1
Authority
EP
European Patent Office
Prior art keywords
cmc
cmc substrate
alumina
spray device
coating
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Withdrawn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
EP17800436.2A
Other languages
German (de)
English (en)
Inventor
Arturo Flores Renteria
Peter Stuart Hollingsworth
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
Publication of EP3519374A1 publication Critical patent/EP3519374A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
    • 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
    • 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
    • F01D5/282—Selecting composite materials, e.g. blades with reinforcing filaments
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/30—Manufacture with deposition of material
    • F05D2230/31—Layer deposition
    • F05D2230/312—Layer deposition by plasma spraying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/90—Coating; Surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/20—Oxide or non-oxide ceramics
    • F05D2300/21—Oxide ceramics
    • F05D2300/2118—Zirconium oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/603—Composites; e.g. fibre-reinforced
    • F05D2300/6033—Ceramic matrix composites [CMC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/611—Coating

Definitions

  • the invention relates to a method of coating a CMC part with a layer, wherein the steps of roughening and coating a ceramic layer is performed by the same device.
  • Ceramic Matrix Composites offer a high potential as new material for vanes and combustion parts in Large Gas Tur- bines. Due to the limited hot gas resistance, a thermal bar ⁇ rier coating (TBC) needs to be applied on the CMC surface.
  • TBC thermal bar ⁇ rier coating
  • APS atmospheric plasma spray process
  • a key property of the coating is the adhesion strength (also called bond strength) . Low adhesion strength values lead to a spallation of the coating, in particular under thermal cycling (service operation) .
  • the bonding between coating and substrate is mainly achieved by mechanical clamping of the impacting spray particles on the substrate.
  • the surface needs to be mchanically machined, commonly via handed grit blasting of corundum, before coating.
  • the low fracture toughness of the CMCs leads to a non-uniform abrasion of the CMC surface while machining.
  • the impacting corundum particles cause a breaking of the ceramic fibers. That results in decreased bond strength.
  • the common way to ensure high adhesion strength between coating and substrate (for metallic components) is a hand- operated grit blasting process.
  • the grit blasting leads to roughening of the metallic surface.
  • the impacting spray par ⁇ ticles are able to clamp with the rough surface of the sub- strate.
  • the grit blasting process shows two main disadvantages:
  • the hand-controlled process results in an undesired non ⁇ uniform abrasion of the CMC surface. This leads to different surface conditions (local different roughness) .
  • the aim of the invention is to overcome the problems listed above .
  • the problem is solved by a method according to claim 1.
  • This invention gives the opportunity to improve the bond strength of ceramic coatings, on CMCs by means of an advanced roughening process using the conventional powder gun, espe- cially an APS gun.
  • an advanced, robot based plasma spray process of alumina parti ⁇ cles is used as new roughening technology of the CMC surface.
  • alumina (AI 2 O3) is often used as ce ⁇ ramic bondcoat material.
  • the same alumina powder and plasma process could be used to rough the CMC surface.
  • the process parameter of the plasma spray process need to be adjusted.
  • the plasma process parameter need to be shifted to "colder" con ⁇ ditions (decrease of the particle temperature) .
  • the solid particle impact on the surface (but do not stick to the sur- face, due to solid state) and lead to a homogeneous and well controllable roughening process.
  • the advantages of the robot based plasma spray process are:
  • the plasma gun equipment (gravimetric powder feeder) ena- bles a high-precision powder feeding process. This leads to a homogeneous and well controllable roughening process.
  • the used agglomerated and sintered alumina powders are of spherical shape (in comparison to the sharp-edged grit blast- ing powder) . Due to this, the blasting process with the spherical powders avoids an excessively breaking of the ce ⁇ ramic fibers.
  • the plasma plume can be used for clean- ing the CMC surface.
  • the combination of roughening, cleaning and coating process of the CMC surface by means of an atmospheric plasma spray process is the inventive step. This enables a homogeneous and soft roughening process and a corresponding faster process chain with an increased the bond strength of the coating on the CMC part.
  • the CMC substrate is preferably a SiC-SiC, Ox-Ox, mullite or alumina based CMC part,
  • fibres of SiC, alumina, mullite or alumi- na/mullite especially with fibres of SiC, alumina, mullite or alumi- na/mullite.
  • a zirconia based coating is preferably applied on the surface of the CMC substrate, especially with a ceramic bond layer, which is preferably alumina in the case of Ox-Ox-CMC's.
  • This alumina bond coat is preferably applied direct onto the CMC substrate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Abstract

En rugosifiant la surface d'un substrat en CMC avec un dispositif de pulvérisation par plasma à l'aide du même pistolet à plasma pour la rugosification et le revêtement en ajustant les paramètres de pulvérisation, de bonnes propriétés d'adhérence et de revêtement de la couche de céramique sur un substrat en CMC sont obtenues ou réalisées.
EP17800436.2A 2016-11-28 2017-11-02 Procédé de revêtement amélioré de pièces en cmc dans un dispositif de pulvérisation par plasma Withdrawn EP3519374A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16200947.6A EP3326991A1 (fr) 2016-11-28 2016-11-28 Procédé de revêtement amélioré de parties cmc dans un dispositif de pulvérisation de plasma
PCT/EP2017/078063 WO2018095708A1 (fr) 2016-11-28 2017-11-02 Procédé de revêtement amélioré de pièces en cmc dans un dispositif de pulvérisation par plasma

Publications (1)

Publication Number Publication Date
EP3519374A1 true EP3519374A1 (fr) 2019-08-07

Family

ID=57406171

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16200947.6A Withdrawn EP3326991A1 (fr) 2016-11-28 2016-11-28 Procédé de revêtement amélioré de parties cmc dans un dispositif de pulvérisation de plasma
EP17800436.2A Withdrawn EP3519374A1 (fr) 2016-11-28 2017-11-02 Procédé de revêtement amélioré de pièces en cmc dans un dispositif de pulvérisation par plasma

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16200947.6A Withdrawn EP3326991A1 (fr) 2016-11-28 2016-11-28 Procédé de revêtement amélioré de parties cmc dans un dispositif de pulvérisation de plasma

Country Status (2)

Country Link
EP (2) EP3326991A1 (fr)
WO (1) WO2018095708A1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6254935B1 (en) * 1999-04-15 2001-07-03 United Technologies Corporation Method for applying a barrier layer to a silicon based substrate

Also Published As

Publication number Publication date
EP3326991A1 (fr) 2018-05-30
WO2018095708A1 (fr) 2018-05-31

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