CN117701044A - Multiphase dysprosium doped zirconia sealing coating, preparation method thereof and device with high abrasion performance - Google Patents
Multiphase dysprosium doped zirconia sealing coating, preparation method thereof and device with high abrasion performance Download PDFInfo
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- CN117701044A CN117701044A CN202311684625.XA CN202311684625A CN117701044A CN 117701044 A CN117701044 A CN 117701044A CN 202311684625 A CN202311684625 A CN 202311684625A CN 117701044 A CN117701044 A CN 117701044A
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 title claims abstract description 265
- 238000000576 coating method Methods 0.000 title claims abstract description 124
- 239000011248 coating agent Substances 0.000 title claims abstract description 122
- 229910052692 Dysprosium Inorganic materials 0.000 title claims abstract description 76
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000007789 sealing Methods 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000005299 abrasion Methods 0.000 title abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 131
- 239000002131 composite material Substances 0.000 claims abstract description 80
- 238000000034 method Methods 0.000 claims abstract description 72
- QGXMZGYYAAPYRV-UHFFFAOYSA-H dysprosium(3+);tricarbonate Chemical compound [Dy+3].[Dy+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O QGXMZGYYAAPYRV-UHFFFAOYSA-H 0.000 claims abstract description 69
- 238000005507 spraying Methods 0.000 claims abstract description 65
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910003440 dysprosium oxide Inorganic materials 0.000 claims abstract description 46
- NLQFUUYNQFMIJW-UHFFFAOYSA-N dysprosium(iii) oxide Chemical compound O=[Dy]O[Dy]=O NLQFUUYNQFMIJW-UHFFFAOYSA-N 0.000 claims abstract description 46
- GEZAXHSNIQTPMM-UHFFFAOYSA-N dysprosium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Dy+3].[Dy+3] GEZAXHSNIQTPMM-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000000498 ball milling Methods 0.000 claims abstract description 33
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 23
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 23
- 238000005469 granulation Methods 0.000 claims abstract description 17
- 230000003179 granulation Effects 0.000 claims abstract description 17
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 20
- 229920002451 polyvinyl alcohol Polymers 0.000 description 20
- 238000002156 mixing Methods 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 14
- 238000007790 scraping Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 238000005453 pelletization Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The application provides a multiphase dysprosium doped zirconia sealing coating, a preparation method thereof and a device with high abrasion performance, and relates to the technical field of coatings. The preparation method of the multiphase dysprosium doped zirconia seal coating comprises the following steps: dysprosium oxide powder reacts with carbon dioxide to obtain dysprosium carbonate powder, and then the dysprosium carbonate powder is mixed with zirconium oxide for ball milling and granulation to obtain composite powder; preparing the composite powder on a target interface by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure. The multiphase dysprosium doped zirconia seal coating is prepared by the preparation method of the multiphase dysprosium doped zirconia seal coating. The device with high abrasion performance comprises the multiphase dysprosium doped zirconia sealing coating. The wear ratio IDR value of the multiphase dysprosium doped zirconia sealing coating provided by the application is less than or equal to 30%.
Description
Technical Field
The application relates to the technical field of coatings, in particular to a multiphase dysprosium doped zirconia seal coating, a preparation method thereof and a device with high abrasion performance.
Background
In the aeronautical field, aircraft engines require sealing treatments in many locations, and abradable seals have been used for jet engines since the sixty of the twentieth century.
Because many parts of the engine often need to bear high working temperature, the stability and high-temperature abradability of the abradable seal coating are reduced due to long-term service at high temperature, and the stability, safety and service life of the engine are seriously affected.
Therefore, development of a sealing coating with high temperature resistance and excellent abradability becomes a hot problem in research.
Disclosure of Invention
The application aims to provide a multiphase dysprosium doped zirconia seal coating, a preparation method thereof and a device with high abrasion performance so as to solve the problems.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the application provides a preparation method of a multiphase dysprosium doped zirconia seal coating, which comprises the following steps:
dysprosium oxide powder reacts with carbon dioxide to obtain dysprosium carbonate powder, and then the dysprosium carbonate powder is mixed with zirconium oxide for ball milling and granulation to obtain composite powder;
preparing the composite powder on a target interface by using a low-power spraying process with the power not higher than 30kw to obtain the multiphase dysprosium doped zirconia sealing coating;
the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Preferably, the reaction is carried out under an air atmosphere for a period of not less than 24 hours.
Preferably, the ball mass ratio of the ball mill is (1-3): 1, the time is 12-72h.
Preferably, during the granulation process, the inlet temperature of the equipment is 150-180 ℃, the highest temperature is 200-350 ℃, and the material residence time is 20-50 seconds. Preferably, the composite powder is a spherical powder with a particle size of 5-60 μm.
Preferably, the power of the low-power spraying process is 20-30kw, the spraying distance is 120-180mm, and the powder feeding rate is 90-270g/min.
Preferably, in the dysprosia-dysprosia carbonate-zirconia composite material, the mass content of zirconia is 60-80%, and the balance is 3:7-4: dysprosium carbonate and dysprosium oxide of 6.
Preferably, the thickness of the multiphase dysprosium doped zirconia seal coating is 0.5-4mm.
The application also provides a multiphase dysprosium doped zirconia seal coating, which is prepared by using the preparation method of the multiphase dysprosium doped zirconia seal coating.
The application also provides a device with high abrasion performance, which comprises the multiphase dysprosium doped zirconia sealing coating.
Compared with the prior art, the beneficial effects of this application include:
according to the preparation method of the multiphase dysprosium doped zirconia sealing coating, dysprosium oxide powder reacts with carbon dioxide to obtain dysprosium carbonate powder, and then the dysprosium carbonate powder and the zirconia are mixed for ball milling and granulation to obtain composite powder; preparing the composite spherical powder by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure. Under the action of a low-power spraying process with the power not higher than 30kw, only part of dysprosium carbonate is heated and decomposed into dysprosium oxide to form a dysprosium oxide-dysprosium carbonate-zirconia composite phase; when the power is higher than 30kw, dysprosium carbonate is completely converted into dysprosium oxide, and dysprosium carbonate as a supporting skeleton disappears, resulting in poor coating formability and reduced abradability. In addition, carbon dioxide is generated in the dysprosium carbonate decomposition process, so that the multi-phase dysprosium doped zirconia seal coating has a porous structure, and the abradability of the coating is further improved. The residual dysprosium carbonate is taken as a framework, and the dysprosium oxide and the zirconia can improve the high-temperature stability and the high-temperature abradability of the material.
The multiphase dysprosium doped zirconia sealing coating and the device with high abrasion performance provided by the application are excellent in high-temperature abrasion performance, and the abrasion ratio IDR is less than or equal to 30%.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be considered as limiting the scope of the present application.
FIG. 1 is an SEM photograph of a multiphase dysprosium doped zirconia seal coating obtained in example 1;
fig. 2 is a schematic illustration of a scraping test.
Detailed Description
Firstly, the technical scheme provided by the application is generally stated, and the technical scheme is specifically as follows:
the application provides a preparation method of a multiphase dysprosium doped zirconia seal coating, which comprises the following steps:
dysprosium oxide powder is reacted with carbon dioxide to obtain dysprosium carbonate powder (Dy) 2 (CO 3 ) 3 ) Then mixing the dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder;
preparing the composite powder on a target interface by using a low-power spraying process with the power not higher than 30kw to obtain the multiphase dysprosium doped zirconia sealing coating;
the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
In an alternative embodiment, the reaction is carried out under an air atmosphere for a period of not less than 24 hours.
The carbon dioxide content in the air is low, and the reaction speed is low, so dysprosium oxide needs to be fully exposed in the air for a long time, so that the dysprosium oxide fully absorbs the carbon dioxide in the air and is fully converted into dysprosium carbonate.
The dysprosium carbonate is converted into the dysprosium carbonate in the mode, and the relative cost is low.
In an alternative embodiment, the ball mass ratio of the ball mill is (1-3): 1, the time is 12-72h.
Optionally, the ball mass ratio of the ball mill may be 1: 1. 2: 1. 3:1 or (1-3): 1, and the time may be any value between 12h, 24h, 36h, 48h, 60h, 72h, or between 12-72h.
In an alternative embodiment, the granulation is performed with an equipment inlet temperature of 150-180 ℃, a maximum temperature of 200-350 ℃ and a material residence time of 20-50 seconds.
The core affecting the pelletization result is the inlet temperature and the maximum temperature of the pelletization and the time the material stays in the pelletization equipment. The temperature is too low, the powder residence time is short, the powder is not enough to granulate into spheres, the fluidity of the powder is affected, and the feasibility of the spraying process is affected; the dysprosium carbonate can be decomposed in advance due to the excessively high temperature and excessively long time.
Optionally, in the granulating process, the inlet temperature of the equipment can be any value between 150 ℃, 160 ℃, 170 ℃, 180 ℃ or 150-180 ℃, the highest temperature can be any value between 200 ℃, 250 ℃, 300 ℃, 350 ℃ or 200-350 ℃, and the material residence time can be any value between 20s, 30s, 40s, 50s or 20-50 seconds.
In an alternative embodiment, the composite powder is a spherical powder having a particle size of 5-60 μm.
Alternatively, the particle size of the composite powder may be any value between 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, or 5-60 μm.
In an alternative embodiment, the low power spraying process has a power of 20-30kw, a spraying distance of 120-180mm, and a powder feeding rate of 90-270g/min.
If the concentration is less than 20kw, dysprosium carbonate cannot be decomposed, dysprosium oxide does not exist, zirconium oxide does not have a stable phase, and the thermal stability of the coating is poor; if the weight is higher than 30kw, dysprosium carbonate is exclusively used as dysprosium oxide, and a supporting framework is not provided, so that the coating formability is poor, and the abradability of the coating is affected. The spray distance is less than 120mm, the layers are too compact to influence the uniformity of the coating, and powder with the spray distance of more than 180mm cannot reach the substrate in the spraying process, so that the spray coating cannot be prepared; the powder feeding speed is smaller than 90g/min, the production efficiency is affected, the powder feeding speed is larger than 270g/min, and the structural performance of the coating is affected when the powder is not melted.
Optionally, the power of the low-power spraying process may be any value between 20kw, 25kw, 30kw or 20-30kw, the spraying distance may be any value between 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm or 120-180mm, and the powder feeding rate may be any value between 90g/min, 100g/min, 110g/min, 120g/min, 130g/min, 140g/min, 150g/min, 160g/min, 170g/min, 180g/min, 190g/min, 200g/min, 210g/min, 220g/min, 230g/min, 240g/min, 250g/min, 260g/min, 270g/min or 90-270g/min.
In an alternative embodiment, the dysprosia-dysprosia carbonate-zirconia composite material has a zirconia mass content of 60-80%, and the balance is 3:7-4: dysprosium carbonate and dysprosium oxide of 6.
Optionally, in the dysprosia-dysprosia carbonate-zirconia composite material, the mass content of zirconia may be any value between 60%, 65%, 70%, 75%, 80% or 60-80%, and the balance dysprosia carbonate and dysprosia, and the mass ratio of dysprosia carbonate to dysprosia may be 3: 7. 3.5:6.5, 4:6 or 3:7-4: any value between 6.
In an alternative embodiment, the thickness of the multiphase dysprosium doped zirconia seal coating is from 0.5 to 4mm.
Alternatively, the thickness of the multiphase dysprosium doped zirconia seal coating can be any value between 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, or 0.5-4mm.
The application also provides a multiphase dysprosium doped zirconia seal coating, which is prepared by using the preparation method of the multiphase dysprosium doped zirconia seal coating.
The application also provides a device with high abrasion performance, which comprises the multiphase dysprosium doped zirconia sealing coating.
Embodiments of the present application will be described in detail below with reference to specific examples, but it will be understood by those skilled in the art that the following examples are only for illustration of the present application and should not be construed as limiting the scope of the present application. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
The embodiment provides a multiphase dysprosium doped zirconia seal coating, and the preparation method thereof is as follows:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 25 mu m; wherein the ball mass ratio of ball milling is 1:1, and the time is 12 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 20s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing the composite spherical powder on an engine blade by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 20kw, the spraying distance is 120mm, and the powder feeding rate is 90g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the multiphase dysprosium doped zirconia seal coating is 0.5mm.
The wear ratio IDR value was 13%.
Fig. 1 is an SEM photograph of the resulting multiphase dysprosium doped zirconia seal coating.
Example 2
The embodiment provides a multiphase dysprosium doped zirconia seal coating, and the preparation method thereof is as follows:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 50 mu m; wherein the ball mass ratio of ball milling is 1:1, and the time is 20h; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 25s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing the composite spherical powder on an engine blade by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 20kw, the spraying distance is 120mm, and the powder feeding rate is 90g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the multiphase dysprosium doped zirconia seal coating is 0.7mm.
The wear ratio IDR value was 16%.
Example 3
The embodiment provides a multiphase dysprosium doped zirconia seal coating, and the preparation method thereof is as follows:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 10 mu m; wherein the ball mass ratio of ball milling is 1:1, and the time is 12 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 25s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing the composite spherical powder on an engine blade by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 25kw, the spraying distance is 120mm, and the powder feeding rate is 90/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the multiphase dysprosium doped zirconia seal coating is 1.6mm.
The wear ratio IDR value was 13%.
Example 4
The embodiment provides a multiphase dysprosium doped zirconia seal coating, and the preparation method thereof is as follows:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 45 mu m; wherein the ball mass ratio of ball milling is 3:1, and the time is 72 hours; in the granulating process, the inlet temperature of the equipment is 180 ℃, the highest temperature is 350 ℃, and the material residence time is 50s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing the composite spherical powder on an engine blade by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 180mm, and the powder feeding speed is 270g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 80 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 4:6.
The thickness of the multiphase dysprosium doped zirconia seal coating is 3.6mm.
The wear ratio IDR value was 16%.
Example 5
The embodiment provides a multiphase dysprosium doped zirconia seal coating, and the preparation method thereof is as follows:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and manufacturing for 72 hours; in the granulating process, the inlet temperature of the equipment is 170 ℃, the highest temperature is 320 ℃, and the material residence time is 50s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing the composite spherical powder on an engine blade by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 180mm, and the powder feeding speed is 270g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 80 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 4:6.
The thickness of the multiphase dysprosium doped zirconia seal coating is 2.6mm.
The wear ratio IDR value was 12%.
Example 6
The embodiment provides a multiphase dysprosium doped zirconia seal coating, and the preparation method thereof is as follows:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 45 mu m; wherein the ball mass ratio of ball milling is 2:1, and the time is 48 hours; in the granulating process, the inlet temperature of the equipment is 160 ℃, the highest temperature is 300 ℃, and the material residence time is 30s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing the composite spherical powder on an engine blade by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 25kw, the spraying distance is 160mm, and the powder feeding rate is 1800g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 80 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 4:6.
The thickness of the multiphase dysprosium doped zirconia seal coating is 4mm.
The wear ratio IDR value was 10%.
Example 7
The embodiment provides a multiphase dysprosium doped zirconia seal coating, and the preparation method thereof is as follows:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 30 mu m; wherein the ball mass ratio of ball milling is 3:1, and the time is 24 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 30s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing the composite spherical powder on an engine blade by using a low-power spraying process with the power not higher than 30kw to obtain a multiphase dysprosium doped zirconia sealing coating; the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 180mm, and the powder feeding speed is 270g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the multiphase dysprosium doped zirconia seal coating is 3.5mm.
The wear ratio IDR value was 21%.
Comparative example 1
1. Mixing dysprosium oxide and zirconium oxide according to the proportion of 3:1, and performing ball milling and granulation to obtain composite powder with the particle size of 30 mu m; wherein the ball mass ratio of ball milling is 3:1, and the time is 24 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 30s; PVA (polyvinyl alcohol) is added during granulation;
2. and preparing the composite spherical powder into a sealing coating on the engine blade by using a low-power spraying process with the power not higher than 30 kw.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 180mm, and the powder feeding speed is 270g/min.
The thickness of the sealing coating is 0.3mm.
The wear ratio IDR value was 53%.
Comparative example 2
The comparative example provides a sealing coating, which is prepared by the following steps:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 30 mu m; wherein the ball mass ratio of ball milling is 3:1, and the time is 24 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 30s; PVA (polyvinyl alcohol) is added during granulation;
3. and preparing the composite spherical powder into a sealing coating on the engine blade by using a low-power spraying process with the power not higher than 30 kw.
Wherein, the power of the low-power spraying process is 50kw, the spraying distance is 180mm, and the powder feeding speed is 270g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the sealing coating is 3.5mm.
The wear ratio IDR value was 42%.
Comparative example 3
The comparative example provides a sealing coating, which is prepared by the following steps:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain a particle size of 87 mu m; in the granulating process, the inlet temperature of the equipment is 120 ℃, the highest temperature is 200 ℃, and the material residence time is 50s; PVA (polyvinyl alcohol) is added during granulation;
3. preparing a sealing coating on an engine blade by using a low-power spraying process with the power not higher than 30kw for the composite spherical powder; the sealing coating is dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 25kw, the spraying distance is 120mm, and the powder feeding rate is 270g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 80 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 4:6.
The thickness of the sealing coating is 0.3mm.
The wear ratio IDR value was 48%.
Comparative example 4
The comparative example provides a sealing coating, which is prepared by the following steps:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain a particle size of 2 mu m; in the granulating process, the inlet temperature of the equipment is 160 ℃, the highest temperature is 400 ℃, and the material residence time is 50s;
3. preparing a sealing coating on an engine blade by using a low-power spraying process with the power not higher than 30kw for the composite spherical powder; the sealing coating is dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 120mm, and the powder feeding rate is 270g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 80 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 4:6.
The thickness of the sealing coating is 0.4mm.
The wear ratio IDR value was 48%.
Comparative example 5
The comparative example provides a sealing coating, which is prepared by the following steps:
1. fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain a particle size of 3 mu m; in the granulating process, the inlet temperature of the equipment is 170 ℃, the highest temperature is 350 ℃, and the material residence time is 90s;
3. preparing a sealing coating on an engine blade by using a low-power spraying process with the power not higher than 30kw for the composite spherical powder; the sealing coating is dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 120mm, and the powder feeding rate is 270g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 80 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 4:6.
The thickness of the sealing coating is 0.6mm.
The wear ratio IDR value was 52%.
Comparative example 6
The comparative example provides a sealing coating, which is prepared by the following steps:
1. fully exposing dysprosium oxide powder in air for 24 hours, and fully reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 40 mu m; wherein the ball mass ratio of ball milling is 2:1, and the time is 24 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 25s;
3. preparing a sealing coating on an engine blade by using a low-power spraying process with the power not higher than 30kw for the composite spherical powder; the sealing coating is dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 220mm, and the powder feeding rate is 90g/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the sealing coating is 0.3mm.
The wear ratio IDR value was 38%.
Comparative example 7
1. Fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 45 mu m; wherein the ball mass ratio of ball milling is 3:1, and the time is 24 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 25s;
3. preparing a sealing coating on an engine blade by using a low-power spraying process with the power not higher than 30kw for the composite spherical powder; the sealing coating is dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 30kw, the spraying distance is 180mm, and the powder feeding speed is 360/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the sealing coating is 0.6mm.
The wear ratio IDR value was 32%.
Comparative example 8
1. Fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 10 mu m; wherein the ball mass ratio of ball milling is 1:1, and the time is 12 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 25s;
3. preparing a sealing coating on an engine blade by using a low-power spraying process with the power not higher than 30kw for the composite spherical powder; the sealing coating is dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 25kw, the spraying distance is 120mm, and the powder feeding rate is 90/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 3:7.
The thickness of the sealing coating is 1.6mm.
The wear ratio IDR value was 42%.
Comparative example 9
1. Fully exposing dysprosium oxide powder in air for 24 hours, and reacting with carbon dioxide to obtain dysprosium carbonate powder;
2. mixing dysprosium carbonate powder with zirconia, ball milling and granulating to obtain composite powder with the particle size of 40 mu m; wherein the ball mass ratio of ball milling is 3:1, and the time is 24 hours; in the granulating process, the inlet temperature of the equipment is 150 ℃, the highest temperature is 200 ℃, and the material residence time is 25s;
3. preparing a sealing coating on an engine blade by using a low-power spraying process with the power not higher than 30kw for the composite spherical powder; the sealing coating is dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
Wherein, the power of the low-power spraying process is 25kw, the spraying distance is 120mm, and the powder feeding rate is 90/min; in the dysprosium oxide-dysprosium carbonate-zirconia composite material, the mass content of zirconia is 60 percent, and the balance is dysprosium carbonate and dysprosium oxide with a mass ratio of 1:1.
The thickness of the sealing coating is 0.8mm.
The wear ratio IDR value was 39%.
The IDR is the ratio of the blade height change before and after the scraping test to the total feed depth, and is calculated by the following formula:
wherein Δh is a blade height variation value, which is equal to the difference between the blade height before scraping and the blade height after scraping; when the blade height increases after the scraping test, namely delta h is less than 0, namely the blade height increases due to the adhesion of the coating material to the blade tip, the total feed depth value=the calculated value of the scratch depth; when the blade height decreases after the scraping test, i.e. Δh > 0, the total feed depth value = calculated value of the scratch depth + the blade height variation value, i.e. the total feed depth is the sum of the depth of blade tip wear and the depth of the coating being scraped. D is a calculated value of the scraping depth of the coating, and the calculation formula is as follows:
wherein R is the radius of the wheel disc and the height of the blade; l is the coating shave length.
Fig. 2 is a schematic drawing of a scraping test (O is the center of the wheel disc).
Before and after the abrasion test, the length of the coating scratch was measured and recorded using a vernier caliper, which meets the specifications of GB/T1214.3 with an accuracy of 0.02mm.
IDR is a quantitative indicator for evaluating the abradability of a coating, the smaller the IDR, the better the abradability. In general, it is considered that the abrasion resistance is excellent when the IDR absolute value is less than 10%, the abrasion resistance is good when 10 to 20%, the abrasion resistance is acceptable when 20 to 30%, and the abrasion resistance is not acceptable when more than 30%.
The detailed test method refers to the enterprise standard Q/BK908-2014, test and evaluation method for abradability of seal coating.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The preparation method of the multiphase dysprosium doped zirconia sealing coating is characterized by comprising the following steps:
dysprosium oxide powder reacts with carbon dioxide to obtain dysprosium carbonate powder, and then dysprosium carbonate is compounded with zirconium oxide to be mixed for ball milling and granulation to obtain compound powder;
preparing the composite powder on a target interface by using a low-power spraying process with the power not higher than 30kw to obtain the multiphase dysprosium doped zirconia sealing coating;
the multiphase dysprosium doped zirconia sealing coating is a dysprosium oxide-dysprosium carbonate-zirconia composite material with a porous structure.
2. The method for preparing the multiphase dysprosium doped zirconia seal coating according to claim 1, wherein the reaction is performed in an air atmosphere for a time not less than 24 hours.
3. The method for preparing the multiphase dysprosium doped zirconia seal coating according to claim 1, wherein the ball mass ratio of the ball mill is (1-3): 1, the time is 12-72h.
4. The method for preparing the multiphase dysprosium doped zirconia seal coating according to claim 1, wherein in the granulating process, the equipment inlet temperature is 150-180 ℃, the highest temperature is 200-350 ℃, and the material residence time is 20-50 seconds.
5. The method for preparing the multiphase dysprosium doped zirconia seal coating according to claim 1, wherein the composite powder is spherical powder with a particle size of 5-60 μm.
6. The method for preparing the multiphase dysprosium doped zirconia seal coating according to claim 1, wherein the low power spraying process has a power of 20-30kw, a spraying distance of 120-180mm and a powder feeding rate of 90-270g/min.
7. The method for preparing the multiphase dysprosium doped zirconia seal coating according to claim 1, wherein the mass content of zirconia in the dysprosium oxide-dysprosium carbonate-zirconia composite material is 60-80%, and the balance is 3:7-4: dysprosium carbonate and dysprosium oxide of 6.
8. The method for preparing the multi-phase dysprosium doped zirconia seal coating according to any one of claims 1 to 7, wherein the thickness of the multi-phase dysprosium doped zirconia seal coating is 0.5 to 4mm.
9. A multiphase dysprosium doped zirconia seal coating prepared using the method of preparing a multiphase dysprosium doped zirconia seal coating of any of claims 1-8.
10. A high wear device comprising the multiphase dysprosium doped zirconia seal coating of claim 9.
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