CN108930012A - A kind of polyoxide is co-doped with the thermal barrier coating of resistance to melting glass corrosion - Google Patents

A kind of polyoxide is co-doped with the thermal barrier coating of resistance to melting glass corrosion Download PDF

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CN108930012A
CN108930012A CN201810975613.5A CN201810975613A CN108930012A CN 108930012 A CN108930012 A CN 108930012A CN 201810975613 A CN201810975613 A CN 201810975613A CN 108930012 A CN108930012 A CN 108930012A
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thermal barrier
barrier coating
resistance
polyoxide
doped
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CN108930012B (en
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张晶晶
韩圣辉
张昊
王知行
白岩
李逸
王志强
林海
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Dalian Polytechnic University
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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
    • C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
    • C23C4/11—Oxides
    • 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
    • C23C4/073—Metallic material containing MCrAl or MCrAlY alloys, where M is nickel, cobalt or iron, with or without non-metal elements
    • 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
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/134—Plasma spraying

Abstract

The present invention discloses a kind of thermal barrier coating of resistance to melting glass corrosion, including gluing layer NiCrAlY and ceramic layer；The ceramic layer is calculated by mass percentage, including following component: Yb2O3: 0 ~ 10.54, Y2O3: 5.1 ~ 6.8, ZrO2: 59.1 ~ 73, Al2O3: 13 ~ 16.9, TiO2: 3.25 ~ 3.3, Nd2O3: 0 ~ 9, Yb2O3: 0 ~ 10.54.In addition the preparation method of the ceramic layer of Thermal Barrier Coating Layers Prepared By Plasma Spraying is also provided；Include operating procedure below: powder preparation mixing, is granulated, spraying.The thermal barrier coating obtained using such technical solution, resistance to melting glass corrosion effect is remarkably reinforced compared with traditional thermal barrier, this method is easy to operate, relative to other methods, cost is relatively low, without optional equipment, there is boundless application prospect in resistance to melting glass corrosion field in aero-engine.

Description

A kind of polyoxide is co-doped with the thermal barrier coating of resistance to melting glass corrosion
Technical field
The present invention relates to a kind of formula of thermal barrier coating and its preparation processes more particularly to a kind of polyoxide to be co-doped with refractory Melt the thermal barrier coating of glass corrosion.
Background technique
Thermal barrier coating (Thermal barrier coatings, TBCs) is that one kind can play heat-blocking action and prevent zero Part is oxidized the protective coating with corrosion in the high temperature environment.Its heat-blocking action can reduce what coating lower substrate metal was born Actual work temperature can effectively improve the service life of components.TBCs is mainly used in zero, metal of hot operation Part surface, such as the table of space shuttle turbo blade, the hot-end component of weaponry propulsion system and combustion chamber of gas turbine part Face.The relevant research of thermal barrier coating in recent years is concentrated mainly on thermal shock resistance, high temperature oxidation resistance, and most experimental conditions are Coating, which is in, to carry out under the condition of high temperature of corrosion-free medium.In fact during harsh environment is on active service for a long time, TBCs Other than needing to overcome high-temperature oxydation, also long-term to bear melten glass corrosion, i.e., sand particle deposits shape on blade in air At calcium and magnesium alumina silicate glass CMAS, (general ingredient is 33CaO-9MgO-12Al2O3-45SiO2).With aviation in recent years and force The update of the engine work in every parameter of device equipment, the temperature of combustion chamber are continuously improved, corrosion of the CMAS to thermal barrier coating Problem is more serious, significantly reduces the service life of coating, and the Problem of Failure of TBCs significantly limits its extensive use, and The critical issue urgently to be resolved as thermal barrier coating field.
Currently, common heat barrier coat material is 7-8 (wt.%) Y both at home and abroad2O3-ZrO2(YSZ), CMAS deposit pair The influence of 8YSZ thermal barrier coating failure mainly has heat chemistry effect and thermomechanical effect, and generally speaking i.e. sand grains is under high temperature environment Melting, forms the liquid of high flowable state, quickly penetrates into porous YSZ ceramic coating, the brittle glass generated in cooling procedure Mutually lead to ceramic layer cracking, delamination splitting, successively removing failure.Lot of domestic and international scholar is rotten to the anti-CMAS for how improving TBCs Erosion ability has made intensive studies, the mode that is summed up that there are mainly two types of: 1) selecting new coating material.Such as rare earth zirconium Hydrochlorate Ln2Zr2O7Deng, but new coating material and Al2O3Compatibility it is poor, cause the type coating application there are hidden danger.2) it applies The post-processing of layer in the alumina layer of surface electro-deposition densification flawless that is, after being prepared for YSZ coating, or is splashed by magnetic control It penetrates, the modes such as electro beam physics vapour deposition are in the surface YSZ deposition film etc..The mode of post-processing undoubtedly increases on the surface YSZ A protective layer, effectively can prevent CMAS from penetrating into, and substantially increase the resistance to CMAS corrosivity of coating, but thermal barrier coating fails Although being under Thermal-mechanical Coupling effect as a result, having kept out the infiltration of CMAS, TGO can still give birth to the increase of active time Long, the stress concentration of interface can still result in coating failure, and higher cost.
The present invention is based on the practical experience and professional knowledge of being engaged in such experimental design, and reasonable utilization correlation Neo-Confucianism is known Know, by the way of the modification of YSZ, further decreases its thermal conductivity, improve its high temperature phase stability and anti-caking power, have both The raising of anti-CMAS corrosive nature, advantage of lower cost simple to the modified method and process of YSZ, it is easy to accomplish.Based between atom Active force and chemical potential, lattice strain energy (mainly ion size effect) and system electronegativity consider selection multicomponent oxide Object codope YSZ can produce thermodynamically stable, poor mobility defect cluster and nanometer phase structure, make coating thermal conductivity It reduces, anti-sintering property and high temperature stability performance improve.For melting CMAS glass corrosion, if ignore the MgO in glass, Na2O、K2The influence of the oxides such as O, it is believed that CMAS glass falls in Al2O3-SiO2Pseudo- wollastonite area in-CaO ternary phase diagrams, This region is due to kinetic factor, it is difficult to crystallize.Therefore consider to introduce suitable oxide, melten glass is promoted to crystallize And terminate the CMAS glass corrosion of thermal barrier coating.It is theoretical based on phasor and glass crystallization, TiO may be selected2、Al2O3As ZrO2Surely Determine agent.Based on field strength theory, the higher TiO of field strength may be selected2、Al2O3、Ta2O5、Nb2O5As stabilizer, melten glass is improved Viscosity inhibits it to penetrate further into thermal barrier coating, improves resist melt glass corrosion performance.Nb is selected2O5、Yb2O3、Al2O3、 TiO2Four kinds of oxide co-dopeds are prepared multivariant oxide by way of plasma spraying and are co-doped with YSZ coating (NYbAT- YSZ), based on interatomic force and chemical potential, lattice strain energy and system electronegativity, formulate multivariant oxide codope and come Stablize ZrO2；It is desirably to obtain a kind of ceramic layer formula of modification YSZ coating that anti-CMAS corrosive nature is excellent, more using technique Simply, the cheaper preparation method of cost obtains the thermal barrier coating of excellent in stability, is allowed to more industrial value.Passing through Constantly try to figure out, study, test, designs, modification, then the repetitive process tested, obtain that there is the ceramic layer of real value to match finally Side.
Summary of the invention
Major significance of the invention is, conventional YSZ thermal barrier coating, high temperature (>=1150 DEG C) the CMAS corrosion the case where Under, when it is 1/3 that the CMAS of melting, which penetrates thermal barrier coating depth, transversal crack will be generated in crystal structure, crack growth is led Disbonding is caused, while the CMAS melted can also make YSZ coating generate the poor area Y, will lead to cut after the generation phase transformation of the region and answer Power increases, coating cracking.The present invention makes O using there is Lacking oxygen in doping oxide2-It turns to Lacking oxygen and deviates Zr4+To shape At stablizing ZrO2Fluorite structure, it is considered that be Y in YSZ3+Instead of Zr4+Lattice is allowed defect, a large amount of defects occur Cause phonon modes to change, reduces YSZ thermal conductivity, then improve structural stability and resistance to corrosion.
The object of the invention to solve the technical problems adopts the following technical solutions to realize.
A kind of polyoxide is co-doped with the thermal barrier coating of resistance to melting glass corrosion, including gluing layer NiCrAlY and ceramic layer；Institute It states ceramic layer to be calculated by mass percentage, including following component:
Y2O3: 5.1~6.8,
ZrO2: 59.1~73,
Al2O3: 13~16.9,
TiO2: 3.25~3.3,
Nd2O3: 0~9,
Yb2O3: 0~10.54
Further, the preparation method of ceramic layer includes the following steps:
Step 1. weighs each component by the mass percent and carries out ground and mixed, obtains mixed powder 1；
The mixed powder 1 being uniformly mixed in the step 1 is obtained granularity by step 2. by way of mist projection granulating Powder 2 used for plasma spraying；
The powder 2 that step 3. prepares the step 2 deposits to gluing layer NiCrAlY by way of plasma spraying Surface, layer upon layer form the ceramic layer of thermal barrier coating.
Further, the granularity for the mixed-powder 1 that prepared by step 1 is 20~40 μm.
Further, ground and mixed is carried out to each component with agate mortar in step 1, until powder color is uniform.
Further, in the plasma spraying of step 3, the central temperature of plasma arc is 2 × 104K。
Further, the jet velocity of the powder 2 in the plasma spraying of step 3 is 1Mach.
Further, use inert gas He as working gas in the plasma spraying of step 3.
Further, the porosity of the ceramic layer of the thermal barrier coating in step 3 is 10~15%.
Further, ceramic layer is calculated by mass percentage, including following component:
Y2O3: 5.1~6.8,
ZrO2: 59.1~73,
Al2O3: 13~16.9,
TiO2: 3.25~3.3,
Nd2O3: 0.5~9,
Yb2O3: 0.5~10.54
By above-mentioned technical proposal, polyoxide doping YSZ thermal barrier coating of the invention is at least had the advantage that
It joined Nb in varing proportions in the ceramic layer of polyoxide doping YSZ thermal barrier coating of the invention2O5、Yb2O3、 Al2O3、TiO2, especially with the dedicated Al of plasma spraying2O3- 20wt.%TiO2Powder substitutes part 7-8 (wt.%) Y2O3- ZrO2Significantly reduce cost.NYbAT-YSZ coating after plasma spraying, compared with YSZ, porosity decreases, pottery The consistency of porcelain coating significantly improves, and can hinder the infiltration of the CMAS of melting to a certain extent.In addition, the incorporation of Yb can introduce Association defect, the defect association between one side Yb, Y and oxygen defect can make crystal more stable, and doped chemical is not easy from crystalline substance It is lost in body；The case where on the other hand even if there are doped chemical losses due to long-time military service, defect association can lesser Yb It is more easy to run off, so that it is guaranteed that Y is retained in crystal of zirconium oxide, improves the mutually stable of coating and resistance to CMAS corrosive nature.It is melting Al during glass corrosion, in coating3+Be transferred in CMAS so that the ingredient in glass phase has reached formation anorthite Composition range, phase composition is transferred to anorthite area by glass phase, in addition TiO2Presence, due to Ti4+、Nd5+Charge height, field strength Greatly, the nucleating agent that can be used as devitrification of glass, in Al3+、Ti4+、Nd5+Under collective effect, the glass phase crystallization of part is anorthite (CaAl2Si2O8).CMAS penetrates into the front end of coating due to being partially converted into anorthite, has delayed the process of corrosion.In corrosion layer Do not corrode interlayer to tend to form spinelle (MgAl2O4), due to anorthitic precipitation, the Ca of glass phase2+And Si4+Content It reduces, the ingredient of CMAS is with Mg2+、Al3+It is in the majority, Al3+Promoting glass phase crystallization again is spinelle.Anorthite and spinelle Fusing point is relatively high, belongs to high melting compound.In the environment of high temperature corrosion, these high melting compounds are effectively prevented CMAS penetrates into ceramic layer, improves coating corrosion resistance.Polyoxide of the present invention is co-doped with thermal barrier coating powder process and adopts It is simple process, at low cost with mechanical mixing, and the modification YSZ thermal barrier coating prepared has good resistance to melten glass rotten Corrosion solves the problems, such as exploitation new coating material and selects the high cost of other way prepares coating, complex process.Step 1 system The granularity of standby mixed-powder 1 is 20~40 μm, is more conducive to the progress of next step mist projection granulating, granularity it is excessive it is too small not Conducive to the progress of mist projection granulating, the progress of subsequent spraying process but will be influenced.
When step 3 sprays, gas shield is carried out using He, is carried out under high temperature when being due to spraying, inert gas He It can prevent the ceramic layer oxidation by air of thermal barrier coating and fail.
Powderject speed when step 3 sprays is 1Mach, can be in cooling when powder being allowed to spray in the case of a high temperature Before be completely spread out in surface, and achieve the effect that layer upon layer.
Porosity is maintained at 10~15%, and porosity is excessively high, and ceramic layer is not fine and close enough, corrosion-vulnerable；Porosity is too low, Vulnerable to stress in sintering process；Therefore improve coating consistency with reduce melten glass liquid infiltration while have both every Hot and toughness prevents the case where surface layer ruptures in advance occur due to the volume change that sintering occurs generates stress.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention, detailed description is as follows below.
Detailed description of the invention
Fig. 1 is the preparation technology flow chart for the ceramic layer that the present invention prepares thermal barrier coating；
Fig. 2 is section of the routine YSZ coating ceramic layer at 1250 DEG C after melten glass corrosion 2 hours under scanning electron microscope Pattern；
Fig. 3 be thermal barrier coating coating ceramic layer of the present invention at 1250 DEG C melten glass corrosion 2 hours after in scanning electron microscope Under Cross Section Morphology.
Further to illustrate the present invention to reach the technical means and efficacy that predetermined goal of the invention is taken, to according to this The polyoxide that invention proposes is co-doped with thermal barrier coating powder and its preparation process its specific embodiment, feature and its effect, Detailed description is as follows.
Mixed-powder 1 mentioned in the present invention, powder 2 are the intermediate in technical solution of the present invention implementation process.With It is down drug used in this experiment and Pharmaceutical Productions Inc.
Specific embodiment
Embodiment 1
The ceramic layer that polyoxide of the invention is co-doped with thermal barrier coating is prepared according to flow chart shown in FIG. 1:
According to mass percent, Y2O36.8%, ZrO273%, Al2O316.9%, TiO23.3%；Specific steps are such as Under:
The mixing of step 1. powder: the formula weighing designed according to step 1 is fully ground with agate mortar, is uniformly mixed, The mixed powder 1 being uniformly mixed；
Step 2. mist projection granulating: the mixed powder 1 being uniformly mixed in step 1 is obtained into granularity by way of mist projection granulating For powder 2 used for plasma spraying between 20-40 μm；
Step 3. spraying: being 2 × 10 in the central temperature of plasma arc4In the case that K and He are protected, prepared by step 2 Powder 2 plasma spraying is carried out with the spraying rate of 1Mach, so that powder 2 is deposited to the surface gluing layer NiCrAlY, layer by layer heap Product, to form the ceramic layer of thermal barrier coating.
Ceramic layer sample prepared by conventional YSZ coating and embodiment 1 after melten glass corrosion 2 hours, passes through at 1250 DEG C Routine YSZ coating surface has apparent ablation trace after crossing CMAS corrosion, and black is presented and coating peels off, has been detached from base Body failure, loses the effect that thermal barrier coating protects matrix completely.And coating prepared by the present invention is after CMAS corrodes There is residual glass state trace on surface without significant change, rarely seen sample middle section, illustrates that melten glass in coating surface, fails to seep Enter coat inside, i.e. coating effectively hinders the erosion of melten glass liquid, plays the effect of good resistance to melting glass corrosion Fruit.
Embodiment 2
The ceramic layer that polyoxide of the invention is co-doped with thermal barrier coating is prepared according to flow chart shown in FIG. 1:
According to mass percent, Y2O35.1%, ZrO259.1%, Al2O313.0%, TiO23.25%；Nd2O3 9.0%；Yb2O310.55%；Specific step is as follows:
The mixing of step 1. powder: the formula weighing designed according to step 1 is fully ground with agate mortar, is uniformly mixed, The mixed powder 1 being uniformly mixed；
Step 2. mist projection granulating: the mixed powder 1 being uniformly mixed in step 1 is obtained into granularity by way of mist projection granulating For powder 2 used for plasma spraying between 20-40 μm；
Step 3. spraying: being 2 × 10 in the central temperature of plasma arc4In the case that K and He are protected, prepared by step 2 Powder 2 plasma spraying is carried out with the spraying rate of 1Mach, so that powder 2 is deposited to the surface gluing layer NiCrAlY, layer by layer heap Product, to form the ceramic layer of thermal barrier coating.
Ceramic layer sample prepared by conventional YSZ coating and embodiment 2 is being swept after melten glass corrodes 2 hours at 1250 DEG C The Cross Section Morphology difference retouched under Electronic Speculum is as shown in Figures 2 and 3, and running through occur in routine YSZ coating cross sections after CMAS corrodes The longitudinal crack of coat inside, the presence of crackle necessarily cause to apply split layer failure.And coating prepared by the present invention is through CMAS corruption Section has no obvious penetrating crack after erosion, illustrates that polyoxide doping effectively raises the glass corrosion of the resistance to melting energy of coating Power has obtained the product for meeting requirement.
Embodiment 3
Polyoxide of the invention, which is prepared, according to flow chart shown in FIG. 1 is co-doped with thermal barrier coating:
According to mass percent, Y2O36.0%, ZrO265.0%, Al2O313.0%, TiO23.3%；Nd2O3 5.0%；Yb2O37.7%；Specific step is as follows:
The mixing of step 1. powder: the formula weighing designed according to step 1 is fully ground with agate mortar, is uniformly mixed, The mixed powder 1 being uniformly mixed；
Step 2. mist projection granulating: the mixed powder 1 being uniformly mixed in step 1 is obtained into granularity by way of mist projection granulating For powder 2 used for plasma spraying between 20-40 μm；
Step 3. spraying: being 2 × 10 in the central temperature of plasma arc4In the case that K and He are protected, prepared by step 2 Powder 2 plasma spraying is carried out with the spraying rate of 1Mach, so that powder 2 is deposited to the surface gluing layer NiCrAlY, layer by layer heap Product, to form the ceramic layer of thermal barrier coating.
Has the thermal barrier coating of aforementioned proportion ceramic layer compared with traditional thermal barrier YSZ, finer and close surface ceramii layer CMAS corrosive liquid can be better protected from and invade ceramic layer hereinafter, part four directions can occur at high temperature for traditional thermal barrier YSZ Inversion of phases is monoclinic phase and cubic phase, and lattice at this time will cause surface to crack due to expansion, this formula then improves This drawback.When crackle generates, the surface of gluing layer at this time also can accelerated oxidation generation, while the sintering degree of YSZ Also it can improve, so that elasticity modulus can reduce, increase with the thickness for the oxidation film for cohering layer surface, final ceramic layer YSZ meeting It peels off, and this formula then passes through doping Al2O3- 20wt.%TiO2Mode porosity is reduced, reduce production to a greater extent The possibility of raw crackle.Thus as it can be seen that the generation of surface flawless, only middle section have a small amount of glass in the result of experiment Substance then knows CMAS corrosive liquid coating surface is largely entered, and improves the ability of anti-CMAS corrosion, has obtained more closing The product of requirement.
Embodiment 4
Polyoxide of the invention, which is prepared, according to flow chart shown in FIG. 1 is co-doped with thermal barrier coating:
According to mass percent, Y2O36.0%, ZrO265.0%, Al2O313.3%, TiO23.27%； Nd2O36.0%；Yb2O36.43%；Specific step is as follows:
The mixing of step 1. powder: the formula weighing designed according to step 1 is fully ground with agate mortar, is uniformly mixed, The mixed powder 1 being uniformly mixed；
Step 2. mist projection granulating: the mixed powder 1 being uniformly mixed in step 1 is obtained into granularity by way of mist projection granulating For powder 2 used for plasma spraying between 20-40 μm；
Step 3. spraying: being 2 × 10 in the central temperature of plasma arc4In the case that K and He are protected, prepared by step 2 Powder 2 plasma spraying is carried out with the spraying rate of 1Mach, so that powder 2 is deposited to the surface gluing layer NiCrAlY, layer by layer heap Product, to form the ceramic layer of thermal barrier coating.Porosity is 10%-15%.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession Member, without departing from the scope of the present invention, when the technology contents using the disclosure above are modified or are modified For the equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, according to the technical essence of the invention Any simple modification, equivalent change and modification to the above embodiments, all of which are still within the scope of the technical scheme of the invention.

Claims (8)

1. the thermal barrier coating that a kind of polyoxide is co-doped with resistance to melting glass corrosion, which is characterized in that including gluing layer NiCrAlY and Ceramic layer；The ceramic layer is calculated by mass percentage, including following component:
Y2O3: 5.1 ~ 6.8,
ZrO2: 59.1 ~ 73,
Al2O3: 13 ~ 16.9,
TiO2: 3.25 ~ 3.3,
Nd2O3: 0 ~ 9,
Yb2O3: 0 ~ 10.54.
2. the thermal barrier coating that polyoxide according to claim 1 is co-doped with resistance to melting glass corrosion, which is characterized in that described The preparation method of ceramic layer includes the following steps:
Step 1. weighs each component by the mass percent and carries out ground and mixed, obtains mixed powder 1；
Step 2. by the mixed powder 1 being uniformly mixed in the step 1 obtained by way of mist projection granulating granularity be suitable for it is equal from The powder 2 of sub- spraying；
The powder 2 that step 3. prepares the step 2 deposits to the surface gluing layer NiCrAlY by way of plasma spraying, Layer upon layer forms the ceramic layer of thermal barrier coating.
3. the thermal barrier coating that polyoxide according to claim 2 is co-doped with resistance to melting glass corrosion, which is characterized in that described The granularity of mixed-powder 1 prepared by step 1 is 20 ~ 40 μm.
4. the thermal barrier coating that polyoxide according to claim 2 is co-doped with resistance to melting glass corrosion, which is characterized in that described Ground and mixed is carried out to each component with agate mortar in step 1, until powder color is uniform.
5. the thermal barrier coating that polyoxide according to claim 2 is co-doped with resistance to melting glass corrosion, which is characterized in that in institute It states in the plasma spraying of step 3, the central temperature of plasma arc is 2 × 104K。
6. the thermal barrier coating that polyoxide according to claim 2 is co-doped with resistance to melting glass corrosion, which is characterized in that in institute The jet velocity of powder 2 when stating the plasma spraying of step 3 is 1Mach.
7. the thermal barrier coating that polyoxide according to claim 2 is co-doped with resistance to melting glass corrosion, which is characterized in that in institute Using inert gas He as working gas when stating the plasma spraying of step 3.
8. the thermal barrier coating that polyoxide according to claim 2 is co-doped with resistance to melting glass corrosion, which is characterized in that described The porosity of the ceramic layer of thermal barrier coating in step 3 is 10 ~ 15%.
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AYSEGUL AYGUN 等: "Novel thermal barrier coatings that are resistant to high-temperature attack by glassy deposits", 《ACTA MATERIAL》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113930705A (en) * 2021-09-16 2022-01-14 华东理工大学 Long-life thermal barrier coating material and preparation process thereof, and thermal barrier coating system and preparation process thereof
CN113930705B (en) * 2021-09-16 2024-03-08 华东理工大学 Long-life thermal barrier coating material and preparation process thereof, and thermal barrier coating system and preparation process thereof
CN114000089A (en) * 2021-10-11 2022-02-01 上海交通大学 High-entropy oxide ultra-high temperature thermal barrier coating prepared by APS technology and method thereof
CN115584463A (en) * 2022-07-22 2023-01-10 山东大学 Molten salt corrosion resistant thermal barrier coating and preparation method thereof

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