CN109576630A - A kind of preparation method of high-temperature stable thermal barrier coating - Google Patents
A kind of preparation method of high-temperature stable thermal barrier coating Download PDFInfo
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- CN109576630A CN109576630A CN201910084694.4A CN201910084694A CN109576630A CN 109576630 A CN109576630 A CN 109576630A CN 201910084694 A CN201910084694 A CN 201910084694A CN 109576630 A CN109576630 A CN 109576630A
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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
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
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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
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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
- C23C4/18—After-treatment
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Abstract
The present invention relates to a kind of preparation methods of high-temperature stable thermal barrier coating, belong to metal coating material technical field.The present invention is using foam nickel-molybdenum alloy as raw material, prepare Metallic adhesion coatings, the Metallic adhesion coatings that foam nickel-molybdenum alloy is added have good thermal shock resistance and durability, molybdenum is a kind of transition elements, easily change its state of oxidation, play a part of transmitting electronics in redox reaction in vivo, to effectively improve the heat-resisting quantity and thermal stability of Metallic adhesion coatings.The present invention is with silica-alumina gel filled and process nickel-base alloy; silica-alumina gel can form protective oxide film with foam nickel-base alloy under high-temperature calcination; oxidation film can reduce growth rate under the action of yttrium, molybdenum element; silica-alumina gel is calcined at high temperature as alumina silicate; alumina silicate can be effectively attached on oxidation film; it is capable of the adhesive force of enhanced oxidation film, improves cyclic oxidation performance, improves oxidation film durability at high temperature and thermal stability.
Description
Technical field
The present invention relates to a kind of preparation methods of high-temperature stable thermal barrier coating, belong to metal coating material technical field.
Background technique
As aero-engine is towards the development in high thrust ratio direction, the operating temperature of combustion chamber is continuously improved, such as military
The fuel gas temperature of aircraft is up to 1600 DEG C, and the maximum operation (service) temperature for being used to manufacture the nickel base superalloy of turbine blade only has
1100 DEG C, the requirement of modern aeroengine is can not meet.Based on this, other than improving cooling structure system,
High-temperature alloy surface prepare thermal barrier coating become it is a kind of efficiently with efficiently method.
Thermal barrier coating (abbreviation TBC) is to organize born of the same parents 1 by three parts) adhesive layer (abbreviation BC), 2) thermal growth oxide (letter
Claim TGO) and 3) ceramic top layer (abbreviation TC).When TBC is on active service at high temperature, TGO can just be generated.And the initial stage generated in TGO,
TGO can play the role of inhibiting oxide growth in certain degree, that is, can be considered antioxidant coating.But as TBC exists
The extension of active time under high temperature, TGO constantly grow and have eventually led to the whole destructive peeling of coating.TGO is to cause TBC
The main reason for destruction.
Thermal barrier coating is generally made of high heat-insulated, erosion-resisting ceramic coating and metal bonding coating.Ceramic coating it is main
Function is decrease transmission of the heat to matrix under high temperature load, and it is anti-oxidant with erosion-resisting performance to improve matrix.Metal bonding
The effect of layer is to alleviate the mismatch of ceramic layer and matrix thermal expansion, improves the high temperature oxidation resistance of matrix.Currently, TBC skill
Art is the key technology indispensable applied to aero-engine high temperature-end part surfacecti proteon field, with the hair of science and technology
Exhibition, will obtain more widely studying and applying in various fields such as space flight, aviation, electric power, chemical industry, metallurgy.In order to make heat
Barrier coating reaches best heat insulation, it is necessary to carry out structure design to thermal barrier coating system.Currently, the structure master of thermal barrier coating
It is divided into three kinds: double-layer structure, multilayered structure and gradient-structure.Wherein, double-layer structure is mainly made of ceramic layer and adhesive layer,
Have the advantages that structure simply with technical maturity.But ceramic layer differed with the thermal expansion coefficient of adhesive layer and elasticity modulus compared with
Greatly, easy to fall off during elevated temperature thermal cycles.Therefore, in order to alleviate the mismatch of interface thermophysical property, multilayer knot has been developed
Structure, mainly by metal bonding coating, multilayer insulation, Al2O3Oxidation prevention layer and ceramic top layer etc. are constituted.
In recent years, it can be improved TBC inoxidizability there are many and the method in service life be reported.Wherein, according to scientific research personnel
Report is it is found that Al2O3At 1400 °C, diffusion coefficient 10-12cm2/ s) film have good inoxidizability.In addition,
Similar conclusion, i.e. Al have also been obtained there are also many researchers2O3Films/coatings can improve to a certain extent TBC's really
Inoxidizability.But pass through the Al of atmospheric plasma spraying technology (abbreviation APS) equipment spraying state2O3Or Al2O3/ YSZ is applied
Layer, intrinsic just has very high porosity, this inoxidizability that will lead to coating reduces.
Self-healing material includes ceramic material, high-molecular compound material, metal material and composite material.As its name
Meaning expressed by self-healing is the same, material itself due to heating, stress, impacted or other factors and cause damage
When, self-healing material have can repair spontaneous characteristic.Currently, the self-healing material application in addition to part about corrosion-inhibiting coating
Research outside, rarely have the self-healing material application study in terms of thermal barrier coating.Self-healing material, which has, improves the anti-of coating
A possibility that oxidisability, principle are that the porosity of coating is improved by sealing effect, reduce the oxygen diffusion admittance in coating.?
In relevant research, researchers are had studied using lightweight self-healing ceramic material on high-temperature unit of aircraft engine, and lead to
It crosses research and learns that SiC and its corresponding oxide can have enough plasticity to prevent the extension of crackle, while also having self-healing
Ability seal crackle and prevent the intrusion of oxygen.
Currently, thermal barrier coating relatively generally acknowledges that the problem of will appear is concentrated mainly in terms of two during military service: first,
Aspect is concentrated mainly on thermal growth oxide, on second the problem of concentrating on heat erosion.And for heat erosion, heat, barrier applies
Layer develops to the heat erosion problem that each stage faces and is not quite similar.By the research of scholars, thermal barrier coating is in military service process
The element that the thermal growth oxide of middle generation is derived mainly from adhesive layer is aoxidized.
It is both at home and abroad to there is scholar to report it for oxidation behavior of adhesive layer during military service more.The oxidation
Process substantially include two big stages: protectiveness oxidation and destructive oxidation.In protectiveness oxidation stage, mainly generate
Oxide is the composite oxides based on zirconium oxide.Originate the Al of stratiform2O3Protective oxide can slow down the process of oxidation,
There is scholar to think that the oxidation process be the interior main growing principle to oxidation process, that is, aoxidized is oxonium ion by ceramic layer infiltration
To interface.And subsequent amorphous oxide belongs to export-oriented oxidation process, oxide itself can induce mostly to aoxidize based on network
Hole and crackle are generated, the failure of coating is promoted.And during in formula, to cause the power of crack propagation to include two aspects,
It is on one side thermal stress, neck is oxide growth stress on one side.As M.Martena described in its paper,
During heating, volume expansion occurs for adhesive layer, and is oxidized, and can form one layer of TGO on the surface of adhesive layer.As
Its thermal expansion coefficient of TGO. based on ceramic oxide is significantly lower than adhesive layer, and then while cooling, volume contraction is inconsistent.
Currently, aero-engine of new generation develops towards high thrust ratio, turbine inlet temperature (TIT) is persistently increased.Traditional thermal boundary
Coating metal adhesive layer mcraly or niptal is because can not be in 1100 DEG C of temperatures above long-term stable operations, it is difficult to as next
For the metal bonding coating material of superhigh temperature thermal barrier coating.β-nial is capable of forming the protection of continuous densification in 1200 DEG C or more high temperature
Property oxidation film, be at present most possibly as 1200 DEG C of resistance to high temperature oxidation superhigh temperature thermal barrier coating of new generation metal bonding coating
Candidate.β-nial is capable of forming the protective oxide film of continuous densification in 1200 DEG C or more high temperature, be at present most possibly at
For the candidate material of the metal bonding coating of the superhigh temperature thermal barrier coating of new generation of 1200 DEG C of resistance to high temperature oxidation, however due to coating table
Surface oxidation film adhesion is poor, causes coating 1200 DEG C of cyclic oxidation service life less than 50h.
Summary of the invention
The technical problems to be solved by the invention: for traditional thermal barrier coating metal bonding coating MCrAlY or NiPtAl
Because a kind of preparation side of high-temperature stable thermal barrier coating can not be provided 1100 DEG C of temperatures above long-term stable operations the problem of
Method.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) by treated, nickel chromium high-temperature alloy is preheated to 80 ~ 100 DEG C, and Metallic adhesion coatings are placed in supersonic flame spraying
In equipment, 180 ~ 200 DEG C at a temperature of the nickel chromium high-temperature alloy that is sprayed into the spray rate of 15 ~ 30g/min that treated on,
The nickel chromium high-temperature alloy of adhesive layer must be contained；
(2) zircaloy ceramic powder is placed in supersonic velocity flame plating equipment, 350 ~ 400 DEG C at a temperature of with 30 ~ 60g/
The spray rate of min is sprayed on the nickel chromium high-temperature alloy containing adhesive layer, must spray the nickel chromium high-temperature alloy finished；
(3) nickel chromium high-temperature alloy that spraying finishes is placed in 1 ~ 2h of calcining at 600 ~ 800 DEG C, obtains high-temperature stable thermal barrier coating.
Treated the nickel chromium high-temperature alloy, Metallic adhesion coatings, the parts by weight of zircaloy ceramic powder are 20 ~ 30
Part treated nickel chromium high-temperature alloy, 40 ~ 50 parts of Metallic adhesion coatings, 10 ~ 20 parts of zircaloy ceramic powders.
The specific preparation step of treated described in step (1) nickel chromium high-temperature alloy are as follows: be placed in nickel chromium high-temperature alloy
15 ~ 20min is ultrasonically treated in dehydrated alcohol, room temperature stands 2 ~ 3h, then is placed in sand-blasting machine and carries out blasting treatment, uses compressed air
5 ~ 10min of sand blasted surface is blown, the nickel chromium high-temperature alloy that obtains that treated.
The quartz sand that the blasting treatment uses is the quartz sand of 36 ~ 40 mesh, the wind pressure of 0.2 ~ 0.3MPa.
Treated the nickel chromium high-temperature alloy matrix surface mean roughness is 4.5 ~ 5.0 μm.
The specific preparation step of Metallic adhesion coatings described in step (1) are as follows:
(1) acetic acid is added in deionized water, 5 ~ 10min is stirred with 100 ~ 150r/min revolving speed under room temperature, obtains acetic acid solution；
(2) aluminium glue is added in acetic acid solution, 20 ~ 30min is stirred with 200 ~ 250r/min revolving speed under room temperature, obtains Aluminum sol；
(3) silica solution is added in Aluminum sol, 2 ~ 4h is stirred with 200 ~ 300r/min revolving speed under 60 ~ 80 DEG C of water-baths, obtains sial
Colloidal sol；
(4) by platinum powder be added silicon-aluminum sol in, under room temperature with 800 ~ 1000r/min revolving speed stir 1 ~ 2h, ultrasonic disperse 30 ~
40min obtains filling liquid；
(5) foam nickel-molybdenum alloy is immersed in filling liquid, is placed in 2 ~ 4h of solidifyingization at 40 ~ 60 DEG C, obtains silica-alumina gel filled and process
Nickel-base alloy；
(6) silica-alumina gel filled and process nickel-base alloy is placed under ball mill, with 120 ~ 140r/min revolving speed 3 ~ 5h of ball milling, is obtained golden
Belong to bonding coat.
The aluminium glue, acetic acid, silica solution, deionized water, foam nickel-molybdenum alloy, platinum powder parts by weight be 40 ~ 50 parts of aluminium
Glue, 5 ~ 10 parts of acetic acid, 30 ~ 40 parts of silica solution, 80 ~ 100 parts of deionized waters, 30 ~ 40 parts of foam nickel-molybdenum alloys, 10 ~ 20 parts of platinum powders.
The specific preparation step of zircaloy ceramic powder described in step (2) are as follows:
(1) zirconium oxide, yttrium oxide, lanthana, cerium oxide are placed in crucible, are forged in resistance furnace with 800 ~ 900 DEG C of temperature
1 ~ 2h is burnt, calcined mixed metal powder is obtained；
(2) calcined mixed metal powder is added to absolute ethanol, under polyurethane ball-milling pot, using zirconium oxide as abrasive body
The ball milling 22 ~ for 24 hours on planetary ball mill, obtains slurry；
(3) slurry is put in a drying box, dry 10 ~ 12h, obtains dry blocky powder, by dry bulk at 70 ~ 80 DEG C
Powder is placed in oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, is sintered 6 with 1400 ~ 1600 DEG C of temperature
~ 8h obtains sintered powder；
(4) sintered powder is placed in 1 ~ 2h of grinding in agate mortar, obtains the powder of grinding, the powder of grinding is put into oxidation
It in zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, 4 ~ 5h is sintered with 1400 ~ 1600 DEG C of temperature, obtains zircaloy
Ceramic powder.
The Zirconium powder, yttrium oxide powder, lanthanum oxide powder, cerium oxide powder, dehydrated alcohol parts by weight be
30 ~ 50 parts of Zirconium powders, 5 ~ 10 parts of yttrium oxide powders, 3 ~ 5 parts of lanthanum oxide powders, 3 ~ 5 parts of cerium oxide powders, 40 ~ 50 parts of nothings
Water-ethanol.
The adhesive layer thickness of high-temperature stable thermal barrier coating described in step (3) is 200 ~ 300 μm, ceramic layer thickness be 300 ~
400μm。
The present invention is compared with other methods, and advantageous effects are:
(1) present invention is prepared thermal barrier coating, is existed by the high temperature alloy of matrix of nickel using nickel chromium high-temperature alloy as basis material
There is good mechanical strength, good inoxidizability, resistance to combustion gas corrosion ability, nickel base superalloy within the scope of 650 ~ 1000 DEG C
Many alloying elements can be dissolved, and are able to maintain good stability, the orderly intermetallic compound phase of coherence can also be formed
As hardening constituent, strengthen the heat-resisting quantity of alloy effectively, chromium of the nickel chromium high-temperature alloy containing in mainly rise it is anti-oxidant and
Anticorrosive effect, the nickel base superalloy containing chromium have anti-oxidant well and resistance to combustion gas corrosion ability；
(2) present invention prepares Metallic adhesion coatings using foam nickel-molybdenum alloy as raw material, and foam nickel-molybdenum alloy has stable three-dimensional
Reticular structure, unique open-celled structure can effectively improve itself tensile strength and thermal shock resistance, and foam nickel-molybdenum alloy is added
Metallic adhesion coatings have good thermal shock resistance and durability, molybdenum is a kind of transition elements, easily change its state of oxidation,
Play a part of transmitting electronics in redox reaction in vivo, the addition of molybdenum element can effectively slow down Metallic adhesion coatings and exist
Low-alloyed oxidation rate drops in the oxidation course under high temperature, thus effectively improve Metallic adhesion coatings heat-resisting quantity and heat it is steady
It is qualitative；
(3) present invention prepares Metallic adhesion coatings, silica-alumina gel is under high-temperature calcination with silica-alumina gel filled and process nickel-base alloy
Protective oxide film can be formed with foam nickel-base alloy, oxidation film can reduce growth rate, sial under the action of yttrium, molybdenum element
It is alumina silicate that gel is calcined at high temperature, and alumina silicate can effectively be attached on oxidation film, be capable of the adhesive force of enhanced oxidation film, change
Kind cyclic oxidation performance improves oxidation film durability at high temperature and thermal stability；
(4) present invention prepares Metallic adhesion coatings, the nanometer platinum powder in Metallic adhesion coatings is in high temperature by addition nanometer platinum powder
In oxidation process into the crystal boundary of oxidation film segregation, occupy quick diffusion admittance cationic in alloy, slow down alloy
Low-alloyed oxidation rate drops in oxidation course, and platinum can mitigate the effect of harmful element, inhibits hole between oxidation film and metal
Generation, the adhesion of oxidation film is improved, to improve Metallic adhesion coatings durability under the high temperature conditions and thermal stability；
(5) present invention prepares ceramic layer, zirconium oxide using zirconium oxide as raw material, and by addition yttrium oxide, lanthana and cerium oxide
Good in oxidation resistance, heat shock resistance, thermal conductivity are low, and the heat of external rings can be prevented to transmit to parent metal, improve the work of matrix
Make temperature, the working limit of high temperature alloy breached in temperature, in zirconium oxide doped yttrium oxide, lanthana and cerium oxide this
Three kinds of rare earth oxides can be effectively reduced the thermal conductivity of ceramic layer, improve the thermal cycle life of ceramic layer at high temperature.
Specific embodiment
According to parts by weight, respectively weigh 40 ~ 50 parts of aluminium glues, 5 ~ 10 parts of acetic acid, 30 ~ 4 parts of silica solution, 80 ~ 100 parts go from
Sub- water, 30 ~ 40 parts of foam nickel-molybdenum alloys, 10 ~ 20 parts of platinum powders acetic acid are added in deionized water, with 100 ~ 150r/ under room temperature
Min revolving speed stirs 5 ~ 10min, obtains acetic acid solution, and aluminium glue is added in acetic acid solution, is stirred under room temperature with 200 ~ 250r/min revolving speed
20 ~ 30min is mixed, Aluminum sol is obtained, silica solution is added in Aluminum sol, is stirred under 60 ~ 80 DEG C of water-baths with 200 ~ 300r/min revolving speed
2 ~ 4h is mixed, silicon-aluminum sol is obtained, platinum powder is added in silicon-aluminum sol, 1 ~ 2h, ultrasound are stirred with 800 ~ 1000r/min revolving speed under room temperature
Disperse 30 ~ 40min, obtains filling liquid, foam nickel-molybdenum alloy is immersed in filling liquid, 2 ~ 4h of solidifyingization, obtains sial at 40 ~ 60 DEG C
Silica-alumina gel filled and process nickel-base alloy is placed under ball mill by gel-filled foam nickel-base alloy, is turned with 120 ~ 140r/min
Fast 3 ~ 5h of ball milling, obtains Metallic adhesion coatings, then according to parts by weight, weighs 30 ~ 50 parts of Zirconium powders, 5 ~ 10 parts of oxygen respectively
Change yttrium powder body, 3 ~ 5 parts of lanthanum oxide powders, 3 ~ 5 parts of cerium oxide powders, 40 ~ 50 parts of dehydrated alcohols, by zirconium oxide, yttrium oxide, oxidation
Lanthanum, cerium oxide are placed in crucible, with 800 ~ 900 DEG C of 1 ~ 2h of temperature calcination in resistance furnace, obtain calcined mixed metal powder
Calcined mixed metal powder is added to absolute ethanol, under polyurethane ball-milling pot, is expert at by abrasive body of zirconium oxide by body
Ball milling 22 on planetary ball mill ~ for 24 hours, slurry is obtained, slurry is put in a drying box, dry 10 ~ 12h, obtains drying at 70 ~ 80 DEG C
Blocky powder, by dry blocky powder be placed in oxidation zirconium crucible in, be placed in molybdenum disilicide furnace, under air atmosphere,
Be sintered 6 ~ 8h with 1400 ~ 1500 DEG C of temperature, obtain sintered powder, by sintered powder be placed in grinding 1 in agate mortar ~
2h obtains the powder of grinding, and the powder of grinding is put into oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere,
It is sintered 4 ~ 5h with 1400 ~ 1600 DEG C of temperature, obtains zircaloy ceramic powder, nickel chromium high-temperature alloy is placed in dehydrated alcohol ultrasonic
Handle 15 ~ 20min, room temperature stands 2 ~ 3h, then is placed in sand-blasting machine and carries out blasting treatment, with compressed air blow sand blasted surface 5 ~
10min, the nickel chromium high-temperature alloy that obtains that treated, then according to parts by weight weigh 20 ~ 30 parts respectively treated that nickel chromium triangle high temperature closes
Gold, 40 ~ 50 parts of Metallic adhesion coatings, 10 ~ 20 parts of zircaloy ceramic powders, will treated that nickel chromium high-temperature alloy is preheated to 80 ~
100 DEG C, Metallic adhesion coatings are placed in supersonic velocity flame plating equipment, 180 ~ 200 DEG C at a temperature of with 15 ~ 30g/min
The spray rate nickel chromium high-temperature alloy that is sprayed into that treated on, the nickel chromium high-temperature alloy containing adhesive layer is obtained, by zircaloy ceramics
Powder is placed in supersonic velocity flame plating equipment, 350 ~ 400 DEG C at a temperature of be sprayed into the spray rate of 30 ~ 60g/min
On nickel chromium high-temperature alloy containing adhesive layer, the nickel chromium high-temperature alloy finished must be sprayed, the nickel chromium high-temperature alloy that spraying finishes is set
1 ~ 2h is calcined at 600 ~ 800 DEG C, obtains high-temperature stable thermal barrier coating.
According to parts by weight, 40 parts of aluminium glues, 5 parts of acetic acid, 30 parts of silica solution, 80 parts of deionized waters, 30 parts of bubbles are weighed respectively
Acetic acid is added in deionized water for foam nickel-molybdenum alloy, 10 parts of platinum powders, stirs 5min under room temperature with 100r/min revolving speed, obtains acetic acid
Aluminium glue is added in acetic acid solution solution, stirs 20min under room temperature with 200r/min revolving speed, obtains Aluminum sol, silica solution is added
In Aluminum sol, 2h is stirred with 200r/min revolving speed under 60 DEG C of water-baths, obtains silicon-aluminum sol, platinum powder is added in silicon-aluminum sol, often
1h is stirred with 800r/min revolving speed under temperature, ultrasonic disperse 30min obtains filling liquid, foam nickel-molybdenum alloy is immersed in filling liquid,
The solidifyingization 2h at 40 DEG C obtains silica-alumina gel filled and process nickel-base alloy, and silica-alumina gel filled and process nickel-base alloy is placed in ball milling
Under machine, with 120r/min revolving speed ball milling 3h, Metallic adhesion coatings are obtained, then according to parts by weight, weighs 30 parts of zirconium oxides respectively
Powder, 5 parts of yttrium oxide powders, 3 parts of lanthanum oxide powders, 3 parts of cerium oxide powders, 40 parts of dehydrated alcohols, by zirconium oxide, yttrium oxide,
Lanthana, cerium oxide are placed in crucible, with 800 DEG C of temperature calcination 1h in resistance furnace, obtain calcined mixed metal powder,
Calcined mixed metal powder is added to absolute ethanol, is abrasive body in planet using zirconium oxide under polyurethane ball-milling pot
Ball milling 22 on formula ball mill ~ for 24 hours, slurry is obtained, slurry is put in a drying box, dry 10h, obtains dry blocky powder at 70 DEG C
Dry blocky powder is placed in oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, with 1400 DEG C by body
Temperature be sintered 6h, obtain sintered powder, sintered powder be placed in agate mortar and grinds 1h, obtain the powder of grinding,
The powder of grinding is put into oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, is burnt with 1400 DEG C of temperature
4h to be tied, zircaloy ceramic powder is obtained, nickel chromium high-temperature alloy is placed in dehydrated alcohol and is ultrasonically treated 150min, room temperature stands 2h,
It is placed in sand-blasting machine again and carries out blasting treatment, blow sand blasted surface 5min with compressed air, the nickel chromium high-temperature alloy that obtains that treated, then
According to parts by weight, 20 parts of treated nickel chromium high-temperature alloy, 40 parts of Metallic adhesion coatings, 10 parts of zircaloy ceramics are weighed respectively
Powder, by treated, nickel chromium high-temperature alloy is preheated to 80 DEG C, and Metallic adhesion coatings are placed in supersonic velocity flame plating equipment,
180 DEG C at a temperature of the nickel chromium high-temperature alloy that is sprayed into the spray rate of 15g/min that treated on, obtain the nickel containing adhesive layer
Zircaloy ceramic powder is placed in supersonic velocity flame plating equipment by chromium high temperature alloy, 350 DEG C at a temperature of with 30g/min
Spray rate be sprayed on the nickel chromium high-temperature alloy containing adhesive layer, the nickel chromium high-temperature alloy finished must be sprayed, spraying is finished
Nickel chromium high-temperature alloy be placed at 600 DEG C and calcine 1h, obtain high-temperature stable thermal barrier coating.
According to parts by weight, 45 parts of aluminium glues, 7 parts of acetic acid, 35 parts of silica solution, 90 parts of deionized waters, 35 parts of bubbles are weighed respectively
Acetic acid is added in deionized water for foam nickel-molybdenum alloy, 15 parts of platinum powders, stirs 7min under room temperature with 125r/min revolving speed, obtains acetic acid
Aluminium glue is added in acetic acid solution solution, stirs 25min under room temperature with 225r/min revolving speed, obtains Aluminum sol, silica solution is added
In Aluminum sol, 3h is stirred with 250r/min revolving speed under 70 DEG C of water-baths, obtains silicon-aluminum sol, platinum powder is added in silicon-aluminum sol, often
1.5h is stirred with 900r/min revolving speed under temperature, ultrasonic disperse 35min obtains filling liquid, foam nickel-molybdenum alloy is immersed in filling liquid
In, the solidifyingization 3h at 50 DEG C obtains silica-alumina gel filled and process nickel-base alloy, and silica-alumina gel filled and process nickel-base alloy is placed in ball
Under grinding machine, with 130r/min revolving speed ball milling 4h, Metallic adhesion coatings are obtained, then according to parts by weight, weighs 40 parts of oxidations respectively
Zirconium powder body, 7 parts of yttrium oxide powders, 4 parts of lanthanum oxide powders, 4 parts of cerium oxide powders, 45 parts of dehydrated alcohols, by zirconium oxide, oxidation
Yttrium, lanthana, cerium oxide are placed in crucible, with 850 DEG C of temperature calcination 1.5h in resistance furnace, obtain calcined mixed metal
Calcined mixed metal powder is added to absolute ethanol, under polyurethane ball-milling pot, exists by abrasive body of zirconium oxide by powder
Ball milling 23h on planetary ball mill, obtains slurry, and slurry is put in a drying box, and dry 11h, obtains dry bulk at 75 DEG C
Dry blocky powder is placed in oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, with 1450 by powder
DEG C temperature be sintered 7h, obtain sintered powder, sintered powder be placed in agate mortar and grinds 1.5h, obtain the powder of grinding
The powder of grinding is put into oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, with 1500 DEG C of temperature by body
Degree sintering 4.5h, obtains zircaloy ceramic powder, nickel chromium high-temperature alloy is placed in dehydrated alcohol and is ultrasonically treated 17min, room temperature is quiet
2.5h is set, then is placed in sand-blasting machine and carries out blasting treatment, blows sand blasted surface 7min with compressed air, the nickel chromium triangle high temperature that obtains that treated
Alloy, then according to parts by weight weighs 25 parts respectively treated nickel chromium high-temperature alloy, 45 parts of Metallic adhesion coatings, 15 parts of zirconiums
Ceramal powder, by treated, nickel chromium high-temperature alloy is preheated to 90 DEG C, and Metallic adhesion coatings are placed in supersonic flame spray
In automatic doubler surface glouer, 190 DEG C at a temperature of the nickel chromium high-temperature alloy that is sprayed into the spray rate of 22g/min that treated on, must contain
Zircaloy ceramic powder is placed in supersonic velocity flame plating equipment by the nickel chromium high-temperature alloy of adhesive layer, 375 DEG C at a temperature of
It is sprayed on the nickel chromium high-temperature alloy containing adhesive layer with the spray rate of 45g/min, the nickel chromium high-temperature alloy finished must be sprayed, it will
The nickel chromium high-temperature alloy that spraying finishes, which is placed at 700 DEG C, calcines 1.5h, obtains high-temperature stable thermal barrier coating.
According to parts by weight, 50 parts of aluminium glues, 10 parts of acetic acid, 40 parts of silica solution, 100 parts of deionized waters, 40 parts are weighed respectively
Acetic acid is added in deionized water for foam nickel-molybdenum alloy, 20 parts of platinum powders, stirs 10min under room temperature with 150r/min revolving speed, obtains second
Aluminium glue is added in acetic acid solution acid solution, stirs 30min under room temperature with 250r/min revolving speed, obtains Aluminum sol, by silica solution plus
Enter in Aluminum sol, 4h stirred with 300r/min revolving speed under 80 DEG C of water-baths, obtains silicon-aluminum sol, platinum powder is added in silicon-aluminum sol,
2h is stirred with 1000r/min revolving speed under room temperature, ultrasonic disperse 40min obtains filling liquid, foam nickel-molybdenum alloy is immersed in filling liquid
In, the solidifyingization 4h at 60 DEG C obtains silica-alumina gel filled and process nickel-base alloy, and silica-alumina gel filled and process nickel-base alloy is placed in ball
Under grinding machine, with 140r/min revolving speed ball milling 5h, Metallic adhesion coatings are obtained, then according to parts by weight, weighs 50 parts of oxidations respectively
Zirconium powder body, 10 parts of yttrium oxide powders, 5 parts of lanthanum oxide powders, 5 parts of cerium oxide powders, 50 parts of dehydrated alcohols, by zirconium oxide, oxidation
Yttrium, lanthana, cerium oxide are placed in crucible, with 900 DEG C of temperature calcination 2h in resistance furnace, obtain calcined mixed metal powder
Calcined mixed metal powder is added to absolute ethanol, under polyurethane ball-milling pot, is expert at by abrasive body of zirconium oxide by body
Ball milling for 24 hours, obtains slurry on planetary ball mill, and slurry is put in a drying box, and dry 12h, obtains dry blocky powder at 80 DEG C
Dry blocky powder is placed in oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, with 1500 DEG C by body
Temperature be sintered 8h, obtain sintered powder, sintered powder be placed in agate mortar and grinds 2h, obtain the powder of grinding,
The powder of grinding is put into oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, is burnt with 1600 DEG C of temperature
5h to be tied, zircaloy ceramic powder is obtained, nickel chromium high-temperature alloy is placed in dehydrated alcohol and is ultrasonically treated 20min, room temperature stands 3h, then
It is placed in sand-blasting machine and carries out blasting treatment, blow sand blasted surface 10min with compressed air, the nickel chromium high-temperature alloy that obtains that treated, then
According to parts by weight, 30 parts of treated nickel chromium high-temperature alloy, 50 parts of Metallic adhesion coatings, 20 parts of zircaloy ceramics are weighed respectively
Powder, by treated, nickel chromium high-temperature alloy is preheated to 100 DEG C, and Metallic adhesion coatings are placed in supersonic velocity flame plating equipment
In, 200 DEG C at a temperature of the nickel chromium high-temperature alloy that is sprayed into the spray rate of 30g/min that treated on, obtain containing adhesive layer
Nickel chromium high-temperature alloy, zircaloy ceramic powder is placed in supersonic velocity flame plating equipment, 400 DEG C at a temperature of with 60g/
The spray rate of min is sprayed on the nickel chromium high-temperature alloy containing adhesive layer, must spray the nickel chromium high-temperature alloy finished, will have been sprayed
Complete nickel chromium high-temperature alloy is placed at 800 DEG C and calcines 2h, obtains high-temperature stable thermal barrier coating.
High-temperature stable thermal barrier coating prepared by the present invention and traditional thermal barrier coating are detected, specific testing result is such as
Following table table 1:
The high-temperature stable thermal barrier coating and traditional thermal barrier coating prepare to examples detailed above 1 ~ 3 carries out thermal cycle in 1050 DEG C of high temperature
Oxidation experiment, according to the SJ1277-1977 coat of metal and chemical treatment layer quality inspection regulation of inspection and SJ1278-1977 metal
The method of inspection of coating and chemical treatment layer appearance.
1 high-temperature stable thermal barrier coating performance characterization of table
High-temperature stable thermal barrier coating prepared by the present invention as shown in Table 1, thermal expansion coefficient is low, and high temperature resistance is good, thermal stability
It is good.
Claims (10)
1. a kind of preparation method of high-temperature stable thermal barrier coating, which is characterized in that specific preparation step are as follows:
(1) by treated, nickel chromium high-temperature alloy is preheated to 80 ~ 100 DEG C, and Metallic adhesion coatings are placed in supersonic flame spraying
In equipment, 180 ~ 200 DEG C at a temperature of the nickel chromium high-temperature alloy that is sprayed into the spray rate of 15 ~ 30g/min that treated on,
The nickel chromium high-temperature alloy of adhesive layer must be contained；
(2) zircaloy ceramic powder is placed in supersonic velocity flame plating equipment, 350 ~ 400 DEG C at a temperature of with 30 ~ 60g/
The spray rate of min is sprayed on the nickel chromium high-temperature alloy containing adhesive layer, must spray the nickel chromium high-temperature alloy finished；
(3) nickel chromium high-temperature alloy that spraying finishes is placed in 1 ~ 2h of calcining at 600 ~ 800 DEG C, obtains high-temperature stable thermal barrier coating.
2. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 1, which is characterized in that the processing
Nickel chromium high-temperature alloy, Metallic adhesion coatings afterwards, the parts by weight of zircaloy ceramic powder are 20 ~ 30 parts of treated nickel chromium triangle high temperature
Alloy, 40 ~ 50 parts of Metallic adhesion coatings, 10 ~ 20 parts of zircaloy ceramic powders.
3. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 1, which is characterized in that step (1) institute
The specific preparation step for nickel chromium high-temperature alloy of stating that treated are as follows: nickel chromium high-temperature alloy is placed in dehydrated alcohol and is ultrasonically treated
15 ~ 20min, room temperature stands 2 ~ 3h, then is placed in sand-blasting machine and carries out blasting treatment, blows 5 ~ 10min of sand blasted surface with compressed air,
Treated nickel chromium high-temperature alloy.
4. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 3, which is characterized in that the sandblasting
The quartz sand used is handled as the quartz sand of 36 ~ 40 mesh, the wind pressure of 0.2 ~ 0.3MPa.
5. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 3, which is characterized in that the processing
Nickel chromium high-temperature alloy matrix surface mean roughness afterwards is 4.5 ~ 5.0 μm.
6. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 1, which is characterized in that step (1) institute
The specific preparation step for the Metallic adhesion coatings stated are as follows:
(1) acetic acid is added in deionized water, 5 ~ 10min is stirred with 100 ~ 150r/min revolving speed under room temperature, obtains acetic acid solution；
(2) aluminium glue is added in acetic acid solution, 20 ~ 30min is stirred with 200 ~ 250r/min revolving speed under room temperature, obtains Aluminum sol；
(3) silica solution is added in Aluminum sol, 2 ~ 4h is stirred with 200 ~ 300r/min revolving speed under 60 ~ 80 DEG C of water-baths, obtains sial
Colloidal sol；
(4) by platinum powder be added silicon-aluminum sol in, under room temperature with 800 ~ 1000r/min revolving speed stir 1 ~ 2h, ultrasonic disperse 30 ~
40min obtains filling liquid；
(5) foam nickel-molybdenum alloy is immersed in filling liquid, is placed in 2 ~ 4h of solidifyingization at 40 ~ 60 DEG C, obtains silica-alumina gel filled and process
Nickel-base alloy；
(6) silica-alumina gel filled and process nickel-base alloy is placed under ball mill, with 120 ~ 140r/min revolving speed 3 ~ 5h of ball milling, is obtained golden
Belong to bonding coat.
7. a kind of preparation method of high-temperature stable thermal barrier coating according to right 6, which is characterized in that the aluminium glue, second
Acid, silica solution, deionized water, foam nickel-molybdenum alloy, platinum powder parts by weight be 40 ~ 50 parts of aluminium glues, 5 ~ 10 parts of acetic acid, 30 ~ 40 parts
Silica solution, 80 ~ 100 parts of deionized waters, 30 ~ 40 parts of foam nickel-molybdenum alloys, 10 ~ 20 parts of platinum powders.
8. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 1, which is characterized in that step (2) institute
The specific preparation step for the zircaloy ceramic powder stated are as follows:
(1) zirconium oxide, yttrium oxide, lanthana, cerium oxide are placed in crucible, are forged in resistance furnace with 800 ~ 900 DEG C of temperature
1 ~ 2h is burnt, calcined mixed metal powder is obtained；
(2) calcined mixed metal powder is added to absolute ethanol, under polyurethane ball-milling pot, using zirconium oxide as abrasive body
The ball milling 22 ~ for 24 hours on planetary ball mill, obtains slurry；
(3) slurry is put in a drying box, dry 10 ~ 12h, obtains dry blocky powder, by dry bulk at 70 ~ 80 DEG C
Powder is placed in oxidation zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, is sintered 6 with 1400 ~ 1600 DEG C of temperature
~ 8h obtains sintered powder；
(4) sintered powder is placed in 1 ~ 2h of grinding in agate mortar, obtains the powder of grinding, the powder of grinding is put into oxidation
It in zirconium crucible, is placed in molybdenum disilicide furnace, under air atmosphere, 4 ~ 5h is sintered with 1400 ~ 1600 DEG C of temperature, obtains zircaloy
Ceramic powder.
9. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 8, which is characterized in that the oxidation
Zirconium powder body, yttrium oxide powder, lanthanum oxide powder, cerium oxide powder, dehydrated alcohol parts by weight be 30 ~ 50 parts of Zirconium powders, 5
~ 10 parts of yttrium oxide powders, 3 ~ 5 parts of lanthanum oxide powders, 3 ~ 5 parts of cerium oxide powders, 40 ~ 50 parts of dehydrated alcohols.
10. a kind of preparation method of high-temperature stable thermal barrier coating according to claim 1, which is characterized in that step (3) institute
The adhesive layer thickness for the high-temperature stable thermal barrier coating stated is 200 ~ 300 μm, ceramic layer thickness is 300 ~ 400 μm.
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