CN108203799B - A kind of resistance to marine corrosion thermal spraying abradable seal coating and preparation method thereof - Google Patents
A kind of resistance to marine corrosion thermal spraying abradable seal coating and preparation method thereof Download PDFInfo
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- CN108203799B CN108203799B CN201611124328.XA CN201611124328A CN108203799B CN 108203799 B CN108203799 B CN 108203799B CN 201611124328 A CN201611124328 A CN 201611124328A CN 108203799 B CN108203799 B CN 108203799B
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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
- C23C4/04—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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/006—Pattern or selective deposits
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/005—Selecting particular materials
-
- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/007—Preventing corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
This technology belongs to the gas circuit seal coating technology of the components such as aero-engine compressor casing inner wall, more particularly to a kind of resistance to marine corrosion thermal spraying abradable seal coating and preparation method thereof.This method comprises the following steps: (1) prepared by bottom, using air plasma spraying method in high-temperature alloy base body surface wheat flour for NiAl bottom;(2) abradable surface layer preparation, NiCrAl/BN surface layer is prepared on NiAl bottom using air plasma spraying method, the phase composition of NiCrAl/BN surface layer is NiCrAl alloy phase and nonmetallic phase h-BN, and prepared NiCrAl/BN surface layer is in typical porous heterogeneous structure.The corrosion-resistant seal coating obtained using the present invention has good anti-marine environment ability, and the performance degradations amount such as its coating hardness, bond strength is low after being subjected to marine environment, meets the requirement that aerial engine air passage is obturaged.
Description
Technical field
This technology belongs to the gas circuit seal coating technology of the components such as aero-engine compressor casing inner wall, more particularly to
A kind of resistance to marine corrosion thermal spraying abradable seal coating and preparation method thereof.
Background technique
Currently, aero-engine all uses different abradable envelopes from fan, high-pressure compressor to turbine casing surface
Tight coating, seal coating is by reducing the gap between casing and vane tip, to reduce the radial loss of air-flow to improve hair
The efficiency of motivation simultaneously reduces oil consumption.But the generally existing resistance to corrosion of current aero-engine abradable seal coating is weak, rotten
Coating performance decline is fast after erosion, and coating failure is caused to cause aircraft accident.Therefore, development has grinding for resistance to marine environment
Consumption seal coating is the inevitable direction of its application development.The resistance to marine corrosion performance of abradable seal coating is not included in coating at present
The performance assessment criteria of performance not yet occurs having the abradable seal coating of anti-marine corrosion ability.So guarantee coating other
Performance it is constant or promoted in the case where, develop have high corrosion-resistant seal coating, have a good application prospect with it is wide
The market space.
Summary of the invention
The purpose of the present invention is to provide a kind of resistance to marine corrosion thermal spraying abradable seal coatings and preparation method thereof, answer
For aero-engine compressor casing inner wall, it can be obviously improved the corrosion resistance of seal coating, effectively improve its service life
And reliability.
The technical scheme is that
A kind of resistance to marine corrosion thermal spraying abradable seal coating, using air plasma spraying NiAl bottom and porous more
Phase NiCrAl/BN surface layer, bilayer composition corrosion-resistant abradable seal coating, wherein NiAl underlayer thickness be 0.1mm~
0.2mm, NiCrAl/BN surface thickness are 2.0mm~2.5mm.
The preparation method of the resistance to marine corrosion thermal spraying abradable seal coating, the specific steps are as follows:
(1) prepared by bottom
Using air plasma spraying method in high-temperature alloy base body surface wheat flour for NiAl bottom;
(2) abradable surface layer preparation
NiCrAl/BN surface layer, the phase of NiCrAl/BN surface layer are prepared on NiAl bottom using air plasma spraying method
Group becomes NiCrAl alloy phase and nonmetallic phase h-BN, and prepared NiCrAl/BN surface layer is in typical porous heterogeneous structure.
The preparation method of the resistance to marine corrosion thermal spraying abradable seal coating, surface layer preparation process include oil removing,
Protection, part blast, plasma spraying, cleaning before blast, detailed process is as follows:
(1) before spray-on coating, oil removal treatment is carried out to part, is cleaned using acetone or gasoline;
(2) it protects before carrying out blast, part non-spraying region is protected using tooling or protective glue band;
(3) part blasting treatment, activation and roughening component surface are carried out, using 40 mesh~80 mesh white fused alumina sand, blast
Pressure is 0.1MPa~0.3MPa;
(4) air plasma spraying, air plasma spraying parameter are as follows: electric current 300A~500A, argon flow are are carried out
50L/min~100L/min, hydrogen flowing quantity are 3L/min~8L/min, and powder feeding rate is 30g~50g, spray distance 90mm
~130mm, spray angle are 75 °~90 °;
(5) it after spraying, removes protective glue band or removes shield jig.
The preparation method of the resistance to marine corrosion thermal spraying abradable seal coating, air plasma spraying NiAl bottom
NiAl alloy epitaxy powder size used is between 50 μm~80 μm.
The preparation method of the resistance to marine corrosion thermal spraying abradable seal coating, by weight percentage, the bottom NiAl
In layer, Ni 90%~95%, Al 5~10%.
The preparation method of the resistance to marine corrosion thermal spraying abradable seal coating, air plasma spraying NiCrAl/
The powder size of NiCrAl alloy and nonmetallic BN used in BN surface layer are between 40 μm~90 μm;The powder is core-shell structure, interior
Portion is BN, external uniformly cladding NiCrAl alloy;The powder after air plasma spraying, formed metal, phase nonmetallic phase with
And pore structure.
The preparation method of the resistance to marine corrosion thermal spraying abradable seal coating, by weight percentage, NiCrAl/
In BN surface layer, Ni 56~60, Cr 12~15, Al 1.0~2.5, BN surplus.
The invention has the advantages and beneficial effects that:
1, aero-engine seal coating when coastal region is stored and is worked easily corrodes, and influences aircraft service life
It is safe with using.The present invention is directed to the improvement of current aero-engine abradable seal coating military service performance, in original spraying
On the basis of technique, abradable seal coating is prepared using cladded type dusty spray, the salt spray resistance, resistance to of coating can be obviously improved
Damp and hot, fungus resistance energy promotes the comprehensive usage performance of coating, expands coating military service range.
2, compared with prior art, the present invention uses air plasma spraying NiAl bottom, has good cementability, with
NiCrAl/BN surface layer is well combined;NiCrAl/BN surface layer bond strength be greater than 5MPa, hardness be 50~70HR15Y within the scope of,
Voids content is about 20%, has good erosion resistance, meets seal coating service demand, be provided simultaneously with good anti-corruption
Erosion ability, salt air corrosion 960h, bond strength decline are only 0.3%.
Detailed description of the invention
Fig. 1 is seal coating system displaing micro tissue topography (50 times).
Fig. 2 is NiCrAl/BN surface layer displaing micro tissue topography (200 times).
Specific embodiment
In the specific implementation process, resistance to marine corrosion thermal spraying abradable seal coating of the present invention and preparation method thereof, is adopted
The corrosion-resistant envelope of NiAl adhesive layer (bottom) and porous multiphase NiCrAl/BN surface layer bilayer composition is prepared with plasma spray coating process
Tight coating, NiAl bottom are prepared using air plasma spraying method, and NiCrAl/BN surface layer uses air plasma spraying method
Preparation.Plasma spray coating process is most representative hot-spraying technique, and plasma arc temperature is high, speed is high, has spraying effect
The advantages that rate is high, and anchoring strength of coating is high.Hot-spraying coating is to be intermeshed to be stacked on one in wave by infinite variety particle
The lamellar tissue's structure for rising and being formed.In spraying process, the rebound of powder particle stacked successively with partial particulate is scattered and disappeared, just
It will form part hole or cavity.
In the following, being further elaborated on by embodiment to the present invention.
Embodiment 1
Step 1: oil removal treatment being carried out to component surface, oil removing is gone using acetone or gasoline wiper element spraying area
Dirty and sundries;
Step 2: being protected before carrying out blast to non-spraying region using pressure sensitive adhesive tape;
Step 3: surface roughening treatment being carried out to part, using forced blowing machine, 40 mesh white fused alumina sand treat spraying area
Domain is handled, gas pressure 0.2MPa;
Step 4: needing spraying area to carry out air plasma spraying NiAl alloy epitaxy bottom, the NiAl alloy epitaxy powder of use part
Last particle size range is between 50 μm~80 μm, specific spraying parameter are as follows: electric current 700A, argon flow 55L/min, hydrogen stream
Measure 5.5L/min, powder feeding rate be 20g/min, spray distance 130mm, 90 ° of spray angle;By weight percentage, NiAl alloy epitaxy
The chemical component of bottom are as follows: Ni 95%, Al 5%;
Step 5: needing spraying area to carry out air plasma spraying NiCrAl/BN surface layer, air plasma spraying part
The powder size of NiCrAl alloy and nonmetallic BN used in NiCrAl/BN surface layer are between 40 μm~90 μm;The powder is nucleocapsid
Structure, inside are BN, external uniformly cladding NiCrAl alloy;The powder forms metal, Xiang Feijin after air plasma spraying
Symbolic animal of the birth year and pore structure, specific process parameter are as follows: hydrogen flowing quantity 2L/min, argon flow 40L/min, powder feeding rate 38g/
Min, spray distance 110mm, 90 ° of spray angle;By weight percentage, the chemical component of NiCrAl/BN surface layer are as follows: Ni 58,
Cr 12, Al 2.0, BN surplus.
Step 6: after spraying, removing the protective glue band in non-spraying region, clear up the pollutant of piece surface.
Step 7: performance detection being carried out to coating, coating surface Rockwell hardness is 57HR15Y, and anchoring strength of coating value is
5.77MPa。
As shown in Figure 1, can be seen that from seal coating system displaing micro tissue topography using technology of the invention, that is, use
The corrosion-resistant seal coating of plasma spraying NiAl adhesive layer and porous multiphase NiCrAl/BN surface layer bilayer composition, wherein NiAl
Bottom is prepared using air plasma spraying method, and NiAl underlayer thickness is 0.1mm~0.2mm, and NiCrAl/BN surface layer is using big
The preparation of gas plasma spray coating process method, NiCrAl/BN surface thickness are 2.0mm~2.5mm.The coating has good anti-sea
Foreign environmental corrosion ability, the performance degradations amount such as its coating hardness, bond strength is low after being subjected to marine environment, meets aviation
The requirement that engine air passage is obturaged.
As shown in Fig. 2, can be seen that NiCrAl/BN surface layer from NiCrAl/BN surface layer displaing micro tissue topography includes NiCrAl
Metal phase, hole and BN nonmetallic phase are in porous heterogeneous structure.
Embodiment the result shows that, the present invention can be applied to other turbomachineries and obturage as gas circuit, ensure equipment
Service life expands mechanical application field, lifting means reliability, has a vast market foreground.After coating the coating, material
It is anticorrosive can significantly improve, effectively increase its life and reliability.The technology also extends to other related fieldss, has
Higher economic benefit.
Claims (1)
1. a kind of preparation method of resistance to marine corrosion thermal spraying abradable seal coating, which is characterized in that use atmospheric plasma
Spray NiAl bottom and porous multiphase NiCrAl/BN surface layer, the corrosion-resistant abradable seal coating of bilayer composition, the wherein bottom NiAl
For layer with a thickness of 0.1 mm~0.2mm, NiCrAl/BN surface thickness is 2.0 mm~2.5mm;
The preparation method of the resistance to marine corrosion thermal spraying abradable seal coating, the specific steps are as follows:
(1) prepared by bottom
Using air plasma spraying method in high-temperature alloy base body surface wheat flour for NiAl bottom;
(2) abradable surface layer preparation
NiCrAl/BN surface layer, the phase composition of NiCrAl/BN surface layer are prepared on NiAl bottom using air plasma spraying method
For NiCrAl alloy phase and nonmetallic phase h-BN, prepared NiCrAl/BN surface layer is in typical porous heterogeneous structure;
Surface layer preparation process includes protection, part blast, plasma spraying, cleaning before oil removing, blast, and detailed process is as follows:
(1) before spray-on coating, oil removal treatment is carried out to part, is cleaned using acetone or gasoline;
(2) it protects before carrying out blast, part non-spraying region is protected using tooling or protective glue band;
(3) part blasting treatment, activation and roughening component surface are carried out, using 40 mesh~80 mesh white fused alumina sand, blast pressure
For the MPa of 0.1MPa~0.3;
(4) air plasma spraying, air plasma spraying parameter are as follows: electric current 300A~500A, argon flow 50L/ are carried out
Min~100L/min, hydrogen flowing quantity are 3L/min~8L/min, and powder feeding rate is the g/min of 30 g/min~50, spray distance
For 90mm~130mm, spray angle is 75 °~90 °;
(5) it after spraying, removes protective glue band or removes shield jig;
NiAl alloy epitaxy powder size used in air plasma spraying NiAl bottom is between 50 μm~80 μm;
By weight percentage, in NiAl bottom, Ni 90%~95%, Al 5~10%;
The powder size of NiCrAl alloy used in air plasma spraying NiCrAl/BN surface layer and nonmetallic BN are at 40 μm~90 μm
Between;The powder is core-shell structure, and inside is BN, external uniformly cladding NiCrAl alloy;The powder is through air plasma spraying
Afterwards, metal phase, nonmetallic phase and pore structure are formed;
By weight percentage, in NiCrAl/BN surface layer, Ni 56~60, Cr 12~15, Al 1.0~2.5, BN surplus.
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Families Citing this family (6)
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CN109182949A (en) * | 2018-07-17 | 2019-01-11 | 中国科学院金属研究所 | A kind of high-performance seal coating and preparation method thereof |
CN110408950B (en) * | 2019-08-30 | 2021-04-27 | 南通大学 | Electrolytic water cathode based on microscopic blasting process and preparation method thereof |
CN110512166B (en) * | 2019-10-11 | 2020-10-27 | 北京矿冶科技集团有限公司 | Marine corrosion resistant abradable material, coating and preparation method thereof |
CN112359309B (en) * | 2020-11-23 | 2023-04-07 | 中国航发沈阳黎明航空发动机有限责任公司 | Preparation method of anti-adhesion coating for aero-engine driving connecting rod |
CN114278393A (en) * | 2021-12-28 | 2022-04-05 | 东方电气集团东方汽轮机有限公司 | Through-flow area sealing structure of shaft seal of steam turbine |
CN117758186A (en) * | 2023-12-11 | 2024-03-26 | 北矿新材科技有限公司 | Single-layer short-flow wear-resistant coating material and preparation method and application thereof |
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Address after: 110180 No. 6 Dongta Street, Dadong District, Shenyang City, Liaoning Province Applicant after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Liaoning Province, Shenyang City District East Street No. 6 Applicant before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |
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