EP3519374A1 - Verbessertes beschichtungsverfahren von cmc-teilen in einer plasmasprühvorrichtung - Google Patents
Verbessertes beschichtungsverfahren von cmc-teilen in einer plasmasprühvorrichtungInfo
- 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- Withdrawn
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16200947.6A EP3326991A1 (de) | 2016-11-28 | 2016-11-28 | Verbessertes beschichtungsverfahren von cmc-teilen in einer plasmasprühvorrichtung |
PCT/EP2017/078063 WO2018095708A1 (en) | 2016-11-28 | 2017-11-02 | Improved coating method of cmc parts in a plasma spray device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3519374A1 true EP3519374A1 (de) | 2019-08-07 |
Family
ID=57406171
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16200947.6A Withdrawn EP3326991A1 (de) | 2016-11-28 | 2016-11-28 | Verbessertes beschichtungsverfahren von cmc-teilen in einer plasmasprühvorrichtung |
EP17800436.2A Withdrawn EP3519374A1 (de) | 2016-11-28 | 2017-11-02 | Verbessertes beschichtungsverfahren von cmc-teilen in einer plasmasprühvorrichtung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16200947.6A Withdrawn EP3326991A1 (de) | 2016-11-28 | 2016-11-28 | Verbessertes beschichtungsverfahren von cmc-teilen in einer plasmasprühvorrichtung |
Country Status (2)
Country | Link |
---|---|
EP (2) | EP3326991A1 (de) |
WO (1) | WO2018095708A1 (de) |
Family Cites Families (1)
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 |
-
2016
- 2016-11-28 EP EP16200947.6A patent/EP3326991A1/de not_active Withdrawn
-
2017
- 2017-11-02 WO PCT/EP2017/078063 patent/WO2018095708A1/en unknown
- 2017-11-02 EP EP17800436.2A patent/EP3519374A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2018095708A1 (en) | 2018-05-31 |
EP3326991A1 (de) | 2018-05-30 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20190430 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20191204 |