CN104561881B - A kind of preparation method of high-temperature abradable seal coating - Google Patents
A kind of preparation method of high-temperature abradable seal coating Download PDFInfo
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- CN104561881B CN104561881B CN201410820069.9A CN201410820069A CN104561881B CN 104561881 B CN104561881 B CN 104561881B CN 201410820069 A CN201410820069 A CN 201410820069A CN 104561881 B CN104561881 B CN 104561881B
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- preparation
- seal coating
- abradable seal
- temperature
- pore creating
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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
Abstract
The invention provides the preparation method of a kind of high-temperature abradable seal coating.The method includes: prepare the high temperature brazing bed of material by supersonic flame spraying method；Preparing transition zone on high temperature brazing bed of material surface, transition zone is high-temperature brazing material and the MCrAlY spray paint of each for transition zone total content 50wt% to be obtained through high-energy ball milling process；It is incubated 12min 17min vacuum condition 1000 DEG C 1150 DEG C；MCrAlY compacted zone is prepared on transition zone surface；At the compacted zone surface preparation porous abradable seal coating containing pore creating material, the raw material composition of the porous abradable seal coating containing pore creating material includes pore creating material and MCrAlY spray paint, and Content of Pore-forming Agents is 2wt% 5wt%；Remove pore creating material, form porous abradable seal coating, obtain high-temperature abradable seal coating.The preparation method of the present invention can improve abradable seal coating and the bond strength of matrix, the service efficiency of solder, the cohesive strength etc. of abradable seal coating.
Description
Technical field
The present invention relates to the preparation method of a kind of seal coating, particularly to the preparation of a kind of high-temperature abradable seal coating
Method, belongs to coat preparing technology field.
Background technology
A new generation's aero-engine requires that it has the features such as high-performance, high reliability, long-life, improves turbine inlet temperature
Degree and control turbo blade can improve engine efficiency with casing gap, reduce fuel oil consumption, increase thrust-weight ratio.Rotator tip
Gap often increases by 1% with the ratio of rotor blade length, and turbine efficiency loss is increased by 1-3%, and therefore, it is to improve that gas circuit is obturaged
One of important channel of engine efficiency and performance.
High temperature seal coating technology belongs to aero-engine key manufacture, and it is the inner surface at electromotor stator,
Suitable abradable coating is prepared near rotor side, when engine rotor is extended by thermal force and centrifugal action, scraping
Abradable coating, is formed and is close to closely coupled movable sealing, reduces the space between engine rotor and stator, improves electromotor
Efficiency.At present the abradable seal coating of high temperature position mainly uses following scheme: vacuum plasma spray coating solder enhancement layer+big
Gas plasma spraying solder enhancement layer+air plasma spraying is obturaged layer, prepares vacuum plasma spray coating at matrix surface and strengthens
Layer, vacuum plasma spray coating enhancement layer contains solder and strengthens point, prepare on vacuum plasma spray coating enhancement layer surface air etc. from
Sub-solder spray enhancement layer, prepares air plasma spraying and obturages layer on air plasma spraying solder enhancement layer surface, air
Plasma spraying is obturaged, and layer is internal contains hole, protects electromotor by the abradable seal coating of above-mentioned high temperature position.
But the raising of inlet temperature before being as turbine, engine operating condition becomes the most severe, and original abradable seal is coated with
Layer is the highest with substrate combinating strength, hot property is not mated, and easily falls block and peeling, can not meet advanced aeroplane engine
The design requirement of machine.The operating temperature of high-temperature abradable seal coating, generally more than 1000 DEG C, still suffers from high quick burning simultaneously
Gas washes away and the tip scraping of turbo blade of high speed rotating, and this just requires that high temperature seal coating has higher thermal shock resistance
Energy, antioxygenic property, bond strength, abradable performance and anti-airflow scouring performance, its quality directly affects the merit of electromotor
Rate, thrust, efficiency and reliability.
In sum, it is provided that a kind of thermal shock resistance, antioxygenic property, bond strength, abradable performance and anti-air-flow
The seal coating that performance of flushing is strong is this area problem demanding prompt solution.
Summary of the invention
In order to solve above-mentioned technical problem, it is an object of the invention to provide a kind of high temperature seal coating, this high temperature is obturaged
Coating can improve the bond strength of abradable seal coating and matrix, improves the motility of abradable seal coating processing technique
And production efficiency, improve the service efficiency of solder, improve the cohesive strength etc. of abradable seal coating.
In order to achieve the above object, the invention provides the preparation method of a kind of high-temperature abradable seal coating, this is prepared
Method comprises the following steps:
The high temperature brazing bed of material is prepared at matrix surface by supersonic flame spraying method；
Transition zone is prepared by supersonic flame spraying method on high temperature brazing bed of material surface, wherein, described transition zone
Raw material is the MCrAlY spray paint mixing of the high-temperature brazing material by transition zone total content 50wt% and transition zone total content 50wt%
Obtaining by high-energy ball milling process, the M in described MCrAlY spray paint includes W metal and/or metal Co；
Under conditions of vacuum, temperature are 1000 DEG C-1150 DEG C, it is incubated 12min-17min；
MCrAlY compacted zone is prepared by supersonic flame spraying method on transition zone surface；
Contained the abradable envelope of porous of pore creating material by supersonic flame spraying method preparation on MCrAlY compacted zone surface
Tight coating, wherein, the raw material composition of the porous abradable seal coating containing pore creating material includes pore creating material and MCrAlY spray paint,
Wherein, counting with the raw material total amount of the porous abradable seal coating containing pore creating material for 100wt%, described Content of Pore-forming Agents is
2wt%-5wt%；
Remove containing the pore creating material in the porous abradable seal coating of pore creating material, form porous abradable seal coating,
Prepare described high-temperature abradable seal coating.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the high temperature brazing bed of material of employing
Thickness be 0.1mm-0.2mm.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the MCrAlY compacted zone of employing
Porosity be 3%-5%.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the MCrAlY compacted zone of employing
Thickness be 0.2mm-0.3mm.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the preparation high temperature brazing bed of material is adopted
High-temperature brazing material include nickel-base high-temperature cored solder or cobalt-based high-temperature cored solder.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the high-temperature brazing material bag of employing
Include BNi-1 cored solder or QFCo-01 cored solder.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the high-temperature brazing material of employing
Particle diameter is 5 μm-60 μm.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the MCrAlY spray paint of employing
Particle diameter be 5 μm-40 μm.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that employing containing pore creating material
The porosity of porous abradable seal coating is 35%-50%.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that employing containing pore creating material
The thickness of porous abradable seal coating is 2mm-3mm.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that the particle diameter of the pore creating material of employing
It is 50 μm-100 μm；It is highly preferred that the pore creating material used includes the polymer such as poly phenyl ester.
In the preparation method of the high-temperature abradable seal coating that the present invention provides, it is preferable that use chamber type electric resistance furnace to remove
Pore creating material, removing temperature is 480 DEG C-530 DEG C, and rate of cooling is 15 DEG C/min-20 DEG C/min.
The preparation method of the high-temperature abradable seal coating that the present invention provides has the advantage that
The pure high temperature brazing bed of material used in the preparation method of the present invention can improve the combination effect of transition zone and matrix,
Being processed by high temperature brazing can be with the metallurgical binding effect of matrix formation 100%, it is to avoid the inefficacy that transition zone cracking causes；
The supersonic flame spraying method used in the preparation method that the present invention provides is compared with plasma spraying method, super
In velocity of sound flame spraying method, spraying particle has lower temperature and faster speed, it is possible to avoid using as reducing coating oxygen
The vacuum chamber changed and use, adds technological flexibility, improves the production efficiency of coating；Also due to particle is at supersonic flame
Spraying method has higher speed, makes to have between the particle and distortion particle of porous coating preferably to combine effect, improve coating
Cohesive strength；
In the preparation process in accordance with the present invention by ball milling coating technology, high-temperature brazing material is made to be evenly coated at MCrAlY spraying
Material powder surface, takes full advantage of the high-temperature brazing material in mixed layer, makes particle combine more firm, it is to avoid due to high temperature pricker
The uneven coating cracking caused of solder mechanical mixing lost efficacy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the high-temperature abradable seal coating of embodiment 1；
Fig. 2 is the SEM scanning figure in the cross section of the high-temperature abradable seal coating of embodiment 1；
Fig. 3 is the structural representation of the matrix in embodiment 1 antithesis pulling method.
Main Reference symbol description:
The 1 nickel base superalloy 2 high temperature brazing bed of material 3 transition zone 4 compacted zone 5 porous containing pore creating material can
Abrasive sealing coating 6 antithesis universal stretching head 7 high-temperature abradable seal coating 8 glue line
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and beneficial effect are more clearly understood from, the existing skill to the present invention
Art scheme carries out described further below, but it is not intended that to the present invention can the restriction of practical range.
Embodiment 1
Present embodiments providing the preparation method of a kind of high-temperature abradable seal coating, this preparation method specifically includes following
Step:
The NiCoCrAlY spray paint using particle diameter to be 10 μm-40 μm and BNi-1 high temperature brazing that particle diameter is 30 μm-80 μm
High-temperature abradable seal coating prepared by material；
The preparation of the high temperature brazing bed of material 2: by BNi-1 high-temperature brazing material (can be used above at 1000 DEG C) by supersonic speed fire
Flame spraying (WoKajet440 spray gun) method sprays to nickel base superalloy 1 surface, prepares the high temperature that thickness is about 0.15mm
Brazing material layer 2, wherein, the concrete technology parameter of supersonic flame spraying method is: oxygen, 854 liters/min；Kerosene, 19 liters/
Hour；Powder sending quantity, 42 gram/minute；Carrier gas, 10 liters/min；Spray distance, 280mm；The temperature of nickel base superalloy 1, is less than
120℃；
The preparation of transition zone 3: BNi-1 high-temperature brazing material and NiCoCrAlY spray paint powder are carried out for 1:1 by weight
Mechanical mixture, puts into ball grinder (the big ball and 450 Ф that have 100 Ф to be 10mm are the bead of 6mm), after ball-milling treatment,
Spray to the high temperature brazing bed of material 2 surface by supersonic flame spraying method, prepare the transition zone 3 that thickness is about 0.15mm；
Wherein, the concrete technology parameter of ball-milling treatment is as follows: ball milling parameter: 40Hz, 400 revs/min, rotates forward 4 hours, instead
Turn 4 hours, after cooling, take out powder；
The technological parameter of supersonic flame spraying method is: oxygen, 870 liters/min；Kerosene, 20 ls/h；Powder sending quantity,
45 gram/minute；Carrier gas, 10 liters/min；Spray distance, 280mm；The temperature of nickel base superalloy 1, less than 120 DEG C；
12min-17min it is incubated at furnace temperature is 1000 DEG C-1150 DEG C under vacuum；
Compacted zone 4(porosity is 3%-5%) preparation: NiCoCrAlY spray paint powder is sprayed by supersonic flame
Coating method sprays to transition zone 3 surface, prepares the compacted zone 4 that thickness is about 0.25mm, wherein, supersonic flame spraying method
Design parameter as follows: oxygen, 876 liters/min；Kerosene, 23 ls/h；Powder sending quantity, 45 gram/minute；Carrier gas, 10 liters/min
Clock；Spray distance, 280mm；The temperature of nickel base superalloy 1, less than 150 DEG C；
Prepared by the porous abradable seal coating 5 containing pore creating material: be 1 by NiCoCrAlY spray paint powder and weight ratio:
The polyester pore creating material mix homogeneously of 0.1, uses supersonic flame spraying method to spray to compacted zone 4 surface, forms thickness and is about
The porous abradable seal coating 5(porosity containing pore creating material of 2.6mm is 35%-50%), wherein, HVAF
The design parameter of method is as follows: oxygen, 876 liters/min；Kerosene, 23 ls/h；Powder sending quantity, 40 gram/minute；Carrier gas, 10 liters/
Minute；Spray distance, 280mm；Substrate temperature, less than 150 DEG C；
Using chamber type electric resistance furnace to remove containing the pore creating material in the porous abradable seal coating 5 of pore creating material, wherein, stove is cold
To 500 DEG C, rate of cooling is 15 DEG C/min-20 DEG C/min, forms porous abradable seal coating, has obtained gross thickness and has been about
The high-temperature abradable seal coating of 3.15mm, the structure of this high-temperature abradable seal coating is as it is shown in figure 1, the SEM in its cross section sweeps
Tracing is as shown in Figure 2.
Preparation to the present embodiment has the nickel base superalloy 1 of high-temperature abradable seal coating 7 to be entered by antithesis pulling method
Row performance test.
Specifically include following steps: after having the nickel base superalloy 1 of high-temperature abradable seal coating 7 to carry out blast preparation
Unsalted surface on the moderate E-7 epoxy fat glue of uniform application thickness, form glue line 8, by universal for antithesis stretching head 6 respectively
Nickel base superalloy 1 upper and lower surface of high-temperature abradable seal coating 7 is had to dock, as shown in Figure 3 with preparation, it is ensured that centering, suitable
When pressurization 3-5 minute, send into baking oven, be incubated 3 hours at 100 DEG C.Universal hydraulic Material Testing Machine is used to draw two subsequently
Peak with heading pulls, and calculates the bond strength obtaining coating.
The bond strength of conventional coatings is: 5.12MPa, 5.23MPa, 4.96MPa, 5.07MPa, 4.98MPa, and meansigma methods is
5.072MPa；The bond strength of the coating that the preparation method of the present invention obtains is: 6.31MPa, 6.50MPa, 6.44MPa,
6.78MPa, 5.97MPa, meansigma methods is 6.40MPa, and bond strength improves 26.2%, the preparation method system of this explanation present invention
The cohesive strength of the standby high-temperature abradable seal coating obtained has obtained effective raising.
Claims (10)
1. a preparation method for high-temperature abradable seal coating, this preparation method comprises the following steps:
The high temperature brazing bed of material is prepared at matrix surface by supersonic flame spraying method；
Transition zone is prepared by supersonic flame spraying method on high temperature brazing bed of material surface, wherein, the raw material of described transition zone
It is by warp after the high-temperature brazing material of transition zone total content 50wt% and the MCrAlY spray paint mixing of transition zone total content 50wt%
High-energy ball milling process obtains, and the M in described MCrAlY spray paint is W metal and/or metal Co；
It is insulation 12min-17min at 1000 DEG C-1150 DEG C in vacuum, temperature；
MCrAlY compacted zone is prepared by supersonic flame spraying method on transition zone surface；
The porous abradable seal containing pore creating material by supersonic flame spraying method preparation on MCrAlY compacted zone surface is coated with
Layer, wherein, the raw material composition of the porous abradable seal coating containing pore creating material includes pore creating material and MCrAlY spray paint, its
In, to count with the raw material total amount of the porous abradable seal coating containing pore creating material for 100wt%, described Content of Pore-forming Agents is
2wt%-5wt%；
Remove containing the pore creating material in the porous abradable seal coating of pore creating material, form porous abradable seal coating, prepare
Described high-temperature abradable seal coating.
Preparation method the most according to claim 1, wherein, the thickness of the described high temperature brazing bed of material is 0.1mm-0.2mm.
Preparation method the most according to claim 1, wherein, the high-temperature brazing material that the preparation high temperature brazing bed of material uses includes nickel
Base high-temperature brazing material or cobalt-based high-temperature cored solder.
Preparation method the most according to claim 3, wherein, described high-temperature brazing material includes BNi-1 cored solder or QFCo-01
Cored solder.
5. according to the preparation method described in claim 3 or 4, wherein, the particle diameter of described high-temperature brazing material is 5 μm-60 μm.
Preparation method the most according to claim 1, wherein, the porosity of described MCrAlY compacted zone is 3%-5%；Described
The thickness of MCrAlY compacted zone is 0.2mm-0.3mm.
Preparation method the most according to claim 1, wherein, the particle diameter of described MCrAlY spray paint is 5 μm-40 μm.
Preparation method the most according to claim 1, wherein, the hole of the described porous abradable seal coating containing pore creating material
Gap rate is 35%-50%；The thickness of the porous abradable seal coating containing pore creating material is 2mm-3mm.
Preparation method the most according to claim 1, wherein, the particle diameter of described pore creating material is 50 μm-100 μm；Preferably, institute
State pore creating material and include poly phenyl ester.
Preparation method the most according to claim 1, wherein, uses chamber type electric resistance furnace to remove pore creating material, and removing temperature is
480 DEG C-530 DEG C, rate of cooling is 15 DEG C/min-20 DEG C/min.
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| CN104894505A (en) * | 2015-06-15 | 2015-09-09 | 中国南方航空工业(集团)有限公司 | Vacuum plasma spraying forming method for ultra-thick coating |
| US10145000B2 (en) | 2016-05-27 | 2018-12-04 | General Electric Company | Thermally dissipative article and method of forming a thermally dissipative article |
| CN107699840A (en) * | 2017-10-25 | 2018-02-16 | 河北工业大学 | The preparation method of porous zirconia thermal barrier coating |
| CN108179371A (en) * | 2017-12-25 | 2018-06-19 | 中国航发动力股份有限公司 | A kind of high-temperature abradable seal coating and preparation method thereof |
| CN110527940B (en) * | 2019-10-16 | 2020-07-10 | 北京矿冶科技集团有限公司 | High-bonding-strength high-temperature-oxidation-resistant porous MCrAlY abradable coating and preparation method thereof |
| CN114136881A (en) * | 2021-11-29 | 2022-03-04 | 胜科纳米(苏州)股份有限公司 | Method for testing metal packaging bonding force of capacitive square fingerprint sensor |
| CN114774830B (en) * | 2022-06-20 | 2022-09-02 | 矿冶科技集团有限公司 | Multifunctional coating, preparation method thereof and power equipment |
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| US6555179B1 (en) * | 1998-01-14 | 2003-04-29 | General Electric Company | Aluminizing process for plasma-sprayed bond coat of a thermal barrier coating system |
| US6242050B1 (en) * | 1998-11-24 | 2001-06-05 | General Electric Company | Method for producing a roughened bond coat using a slurry |
| JP3801452B2 (en) * | 2001-02-28 | 2006-07-26 | 三菱重工業株式会社 | Abrasion resistant coating and its construction method |
| US7150921B2 (en) * | 2004-05-18 | 2006-12-19 | General Electric Company | Bi-layer HVOF coating with controlled porosity for use in thermal barrier coatings |
| US20080145694A1 (en) * | 2006-12-19 | 2008-06-19 | David Vincent Bucci | Thermal barrier coating system and method for coating a component |
| JP5074123B2 (en) * | 2007-08-08 | 2012-11-14 | 株式会社日立製作所 | High temperature wear resistant member and method for producing high temperature wear resistant member |
| US9023423B2 (en) * | 2009-10-07 | 2015-05-05 | General Electric Company | Method of deposition of metallic coatings using atomized spray |
| CN102787290B (en) * | 2012-06-19 | 2014-11-26 | 中国航空工业集团公司北京航空材料研究院 | Preparation method of high-temperature abradable sealing coating |
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Effective date of registration: 20190612 Address after: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee after: China Institute of Aeronautical Manufacturing Technology Address before: 100024 North East military villa, eight Li bridge, Chaoyang District, Beijing Patentee before: Beijing Aviation Manufacturing Engineering Institute of China Aviation Industry Group Company |