CN110078498A - A kind of scandium yttrium codope zirconia coating and preparation method thereof - Google Patents
A kind of scandium yttrium codope zirconia coating and preparation method thereof Download PDFInfo
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- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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Abstract
A kind of scandium yttrium codope zirconia coating and preparation method thereof, by scandium yttrium codope Zirconium oxide powder ultrasonic disperse in the dehydrated alcohol containing polyethylene glycol, obtain suspension, suspension is transported using peristaltic pump, and is sent into prepares coating on matrix in the jet stream of supersonic plasma spray gun and after preheat after being atomized it with atomizer.There is the ScYSZ thermal protection coating for stablizing tetragonal phase structure, Large strain tolerance using the preparation of supersonic speed suspending liquid plasma spray gun.Coating prepared by the present invention is single tetragonal phase structure, better than the heat-proof quality of common YSZ coating, high temperature phase stability is good.Thermal protection coating of the invention can effectively improve use temperature, working efficiency and the service life of the hot-end components such as aero-engine and heavy duty gas turbine turbo blade.
Description
Technical field
The invention belongs to corrosions and protection field, and in particular to a kind of scandium yttrium codope zirconia coating and its
Preparation method.
Background technique
Thermal protection coating is that will have high temperature resistant, anti-oxidant, corrosion resistant ceramic material to be coated in metal base surface, with
Phase reduces the use temperature of alloy hot-end component, improves its service life, is widely used to aero-engine and Heavy duty gas
The hot-end component of turbine.
Now widely used thermal protection coating ceramic material is 6~8wt.%Y2O3Partially stabilized ZrO2(YSZ)。YSZ
With lower thermal conductivity, high fracture toughness and with the preferable thermal expansion coefficient of Matrix Match.But works as using temperature and be more than
At 1200 DEG C, metastable tetragonal zirconia phase (t '-ZrO2) it is changed into the tetragonal phase (t-ZrO of poor Y2) and richness Y cubic phase (c-ZrO2), t phase
It is changed into monocline (m-ZrO in subsequent cooling2) phase, and cause 3~5% volume expansion, so as to cause crack propagation and
The premature failure of coating.In addition, nano-structured coating thermal conductivity compared with micron coating is lower, mechanical property is preferable, but receives
Nanoscale powder poor fluidity, spraying powder feeding are more difficult.
Summary of the invention
It is an object of the present invention to provide one kind to have preferable high temperature tetragonal phase structure stability, high heat-insulated, Large strain
The scandium yttrium codope zirconia coating of the nanostructure of tolerance.
It is a further object to provide a kind of preparation methods of scandium yttrium codope zirconia coating.
To achieve the above object, the present invention adopts the following technical scheme that:
A kind of preparation method of scandium yttrium codope zirconia coating, by scandium yttrium codope Zirconium oxide powder ultrasonic disperse to
In dehydrated alcohol containing polyethylene glycol, suspension is obtained, transports suspension using peristaltic pump, and make suspension liquid mist with atomizer
After change be sent into supersonic plasma spray gun jet stream in and matrix after preheat on prepares coating.
A further improvement of the present invention lies in that by before scandium yttrium codope Zirconium oxide powder ultrasonic disperse, first with dehydrated alcohol
For medium, scandium yttrium codope Zirconium powder is taken out drying and gone forward side by side in 24~48h of ball milling in grinding jar using zirconium oxide balls
Row grinding, obtains scandium yttrium codope Zirconium oxide powder.
A further improvement of the present invention lies in that the particle size of scandium yttrium codope Zirconium powder is 10-100nm.
A further improvement of the present invention lies in that scandium yttrium codope Zirconium powder is by mole meter, including 4.0~
8.0%Sc2O3, 0.5~2.0%Y2O3, remaining is ZrO2。
Scandium yttrium codope zirconia powder preparation: the ZrOCl for being 99.9% with purity2·8H2O、Y(NO3)3·6H2O
With Sc (NO3)36H2O is raw material, and using deionized water as solvent, percentage, is configured to tri- kinds of metals of Zr, Y and Sc in molar ratio
Total ion concentration be 0.4mol/L aqueous solution, stir to clarify it is transparent after, obtain solution, six water lemons added into solution
Acid and polyethylene glycol, wherein the additional amount of citric acid is 100g in every liter of solution, the additional amount of polyethylene glycol is in every liter of solution
10g is stirred for clear, and colloidal sol is made；Then NH is added under stirring condition3·H2O adjusts pH to 8-9, aged, water
Wash, dry after obtain xerogel, grind, obtain scandium yttrium codope Zirconium powder.
A further improvement of the present invention lies in that the quality of polyethylene glycol is poly- second two in the dehydrated alcohol containing polyethylene glycol
The 1~3% of alcohol and dehydrated alcohol gross mass.
A further improvement of the present invention lies in that in suspension scandium yttrium codope Zirconium powder volumetric concentration be 20~
50%.
A further improvement of the present invention lies in that matrix is nickel base superalloy；Substrate preheating is to 200 ± 50 DEG C.
A further improvement of the present invention lies in that the technological parameter of prepares coating are as follows: electric current is 300~600A, voltage 100
~150V, main gas argon flow are 50~100slpm, secondary gas hydrogen flowing quantity is 10~25slpm, spray distance be 40~
80mm, suspension powder feeding rate are 20~80ml/min and supersonic plasma spray gun movement speed is 300~800mm/s.
A further improvement of the present invention lies in that the porosity of coating is 5.0~15.0%, vertical crack density is in coating
6~12mm-1。
A further improvement of the present invention lies in that vertical crack and coating/basal body interface are at 45~90 ° of angles in coating.
Compared with prior art, the invention has the benefit that the present invention with scandium yttrium codope Zirconium oxide powder be original
Material, wherein rare earth Sc3+It is and Zr4+The closest rare earth element of ionic radius, doped and substituted Zr4+Lattice will not be caused larger
Distortion, i.e. Sc3+It is less likely to occur segregation, at high temperature so as to improve material tetragonal phase structure stability；And
Sc2O3-ZrO2The cubic alpha region of phasor is most wide, can introduce more Lacking oxygens under the premise of ensuring that it is tetragonal phase structure,
To reducing, its thermal conductivity is extremely advantageous.Coating prepared by the present invention is due to being single tetragonal phase structure, so than common YSZ
The heat-proof quality of coating is good, high temperature phase stability is good.Thermal protection coating of the invention can effectively improve aero-engine and heavy type
Use temperature, working efficiency and the service life of the hot-end components such as turbine blade of gas turbine.
High stable, long-life scandium yttrium codope thermal protection coating can be prepared using method of the invention.
The present invention overcomes nanometer grade powder poor fluidity, sprays powder feeding more difficulty by suspension automatic powder feeding system
Problem；Preparation has the nanometer scandium yttrium codope zirconium oxide thermal protection coating of class column structure on supersonic plasma spray gun,
It is remarkably improved the service life of thermal protection coating.
Detailed description of the invention
Fig. 1 is the TEM pattern of nanometer scandium yttrium codope Zirconium oxide powder used in the present invention.
Fig. 2 is the section SEM pattern of the class column scandium yttrium codope zirconia coating of 1 preparation according to embodiments of the present invention.
Fig. 3 is the phase structure of the scandium yttrium codope zirconia coating heat treatment front and back of 1 preparation according to embodiments of the present invention.
Fig. 4 is the heat-proof quality curve of the scandium yttrium codope zirconia coating of 1 preparation according to embodiments of the present invention.
Specific embodiment
The present invention is described in further details below with reference to examples and drawings, be only that explanation rather than is limited.
The high-performance scandium yttrium codope zirconium oxide of supersonic speed suspending liquid plasma spraying (SSPS) preparation provided by the invention
The raw material that thermal protection coating uses are as follows: in the scandium yttrium codope Zirconium powder of 10-100nm range, scandium yttrium is co-doped with particle size
Miscellaneous Zirconium powder presses the amount percentages of substance, including 4.0~8.0%Sc2O3, 0.5~2.0%Y2O3, remaining is ZrO2.I.e.
Sc2O3And Y2O3Co-doped ZrO2。
Scandium yttrium codope zirconia powder preparation: the ZrOCl for being 99.9% with purity2·8H2O、Y(NO3)3·6H2O
With Sc (NO3)3·6H2O is raw material, using deionized water as solvent, by the amount percentages of substance, Sc2O3For 4.0~8.0%,
Y2O3It is 0.5~2.0%, remaining is ZrO2Molar ratio at tri- metal ion species total concentration of Zr, Y and Sc be 0.4mol/L
Aqueous solution, after magnetic agitation 3~6h to clear, obtain solution, six water lemon of additive sequentially added into solution
Acid and polyethylene glycol, wherein the additional amount of citric acid is 100g in every liter of solution, the additional amount of polyethylene glycol in every liter of solution
10g, then through magnetic agitation to clear, so that colloidal sol be made；Then NH is added under stirring condition3·H2O adjusts pH to 8-9,
Xerogel, polished acquisition scandium yttrium codope Zirconium powder are obtained after aged, washing, drying.The particle ruler of the powder
It is very little within the scope of 10-100nm, TEM pattern is as shown in Figure 1.
High-performance scandium yttrium codope zirconium oxide thermal protection coating of the invention the preparation method is as follows: with dehydrated alcohol be situated between
Scandium yttrium codope Zirconium powder is taken out in 24~48h of ball milling in grinding jar using zirconium oxide balls and dries and ground by matter
Mill so that scandium yttrium codope Zirconium powder partial size is more evenly, then by scandium yttrium codope Zirconium oxide powder ultrasonic disperse to
Polyethylene glycol is to obtain suspension, the volume of scandium yttrium codope Zirconium powder is dense in suspension in the dehydrated alcohol of dispersing agent
Degree is 20~50%, and carries out continuing stirring.Suspension is transported using peristaltic pump, and is sent into Supersonic after being atomized it with atomizer
The jet stream of fast plasma gun, the prepares coating on the matrix for be preheated to 200 ± 50 DEG C, the technological parameter of prepares coating are as follows: electricity
Stream be 300~600A, voltage be 100~150V, main gas argon flow is 50~100slpm, secondary gas hydrogen flowing quantity be 10~
25slpm, spray distance are 40~80mm, suspension powder feeding rate is 20~80ml/min, spray gun movement speed be 300~
800mm/s。
Wherein, polyethylene glycol accounts for the 1~3% of polyethylene glycol and dehydrated alcohol gross mass.
Matrix is nickel base superalloy.
The porosity of the coating of above method preparation is 5.0~15.0%, in coating vertical crack density be about 6~
12mm-1.And vertical crack and coating/basal body interface are at 45~90 ° of angles in coating.Wherein, vertical crack density are as follows: vertical
Unit length inside dimension in coating surface direction is greater than the vertical crack number of coating layer thickness half, unit mm-1。
Embodiment 1
The present embodiment is by nanometer scandium yttrium codope Zirconium oxide powder (based on the amount percentage of substance, including 7.0mol%'s
Sc2O3, 0.5mol% Y2O3, remaining is ZrO2) powder, TEM pattern is as shown in Figure 1, the powder is nanoscale class column knot
Structure.
By nanometer scandium yttrium codope Zirconium oxide powder using dehydrated alcohol as medium, using zirconia ball in zirconia ball grinding jar
Middle ball milling for 24 hours, takes out and dries and ground, then powder ultrasonic is distributed to the dehydrated alcohol using polyethylene glycol as dispersing agent
In, obtain suspension；The quality of polyethylene glycol is the 1% of polyethylene glycol and dehydrated alcohol gross mass；And it carries out continuing stirring.Benefit
Suspension slurry, suspension solid concentration 20% are transported with peristaltic pump.The body of scandium yttrium codope Zirconium powder i.e. in suspension
Product concentration is 20%.Suspension is transported using peristaltic pump, and is sent into supersonic plasma spray gun after being atomized it with atomizer
In high energy Supersonic Plasma Spraying jet stream, prepares coating on matrix after preheat.
In the spraying process of supersonic plasma spray gun: electric current 400A, voltage 140V, main gas argon flow are
60slpm, secondary gas hydrogen flowing quantity are 20slpm, spray distance 40mm, suspension powder feeding rate are 20ml/min, spray gun moves
Dynamic speed is 500mm/s, and sprays preceding substrate preheating to 150 DEG C.
The Cross Section Morphology of prepared thermal protection coating as shown in Fig. 2, coating layer thickness is 180~220 μm, Coating combination compared with
It is good, it is about 10.0% using the porosity that image analytical method measures ceramic layer.
The phase structure tested spraying state using X-ray diffractometer and be heat-treated thermal protection coating surface after 300h, Fig. 3 are aobvious
The structure of scandium yttrium codope zirconia coating is all single t ' phase structure after showing spraying state and being heat-treated, and embodies preferable height
Warm four directions phase stability.
The heat-proof quality test of scandium yttrium codope zirconia coating uses oxygen-propane burner flame attachment, by coating
Surface is heated to 1300 DEG C, utilizes Non-contacting Infrared Thermometer test base back temperature；Then nothing is tested with same method
The surface of coated substrate and back temperature obtain the adiabatic temperature curve (as shown in Figure 4) of coating.Nanometer ScYSZ coating every
Hot temperature is about 128 ± 6 DEG C, greater than 117 ± 7 DEG C of YSZ coating.
The present embodiment is applied using the ScYSZ that high energy suspending liquid plasma spraying equipment is prepared for nanoscale class column structure
Layer, the coating thermal structure stability, inoxidizability, heat-proof quality and thermal cycle life with higher are remarkably improved gold
Belong to the service life of hot-end component.
Embodiment 2
The present embodiment is with nanometer scandium yttrium codope Zirconium oxide powder (7.0mol%Sc2O3- 0.5mol%Y2O3-ZrO2) powder
End, TEM pattern are as shown in Figure 1.
By nanometer scandium yttrium codope Zirconium oxide powder using dehydrated alcohol as medium, using zirconia ball in zirconia ball grinding jar
Middle ball milling 48h takes out and dries and ground, then powder ultrasonic is distributed to the dehydrated alcohol using polyethylene glycol as dispersing agent
In, obtain suspension；The quality of polyethylene glycol is the 1% of polyethylene glycol and dehydrated alcohol gross mass；Suspension solid concentration
20%.The volumetric concentration of scandium yttrium codope Zirconium powder is 20% i.e. in suspension.Under continuous stirring, it is transported using peristaltic pump
Defeated suspension, and be sent into the jet stream of supersonic plasma spray gun after making suspension atomization with atomizer, matrix after preheat
Upper prepares coating.
During supersonic speed suspension spray: electric current 300A, voltage 100V, main gas argon flow be 50slpm, secondary
Gas hydrogen flowing quantity is 10slpm, spray distance 80mm, suspension powder feeding rate are 30ml/min, spray gun movement speed:
800mm/s, and preceding substrate preheating is sprayed to 150 DEG C.
180~220 μm of the thickness of prepared thermal protection coating, Coating combination is preferable, measures pottery using image analytical method
The porosity of enamel coating is about 15.0%.
Spraying state is tested using X-ray diffractometer and the object on thermal protection coating surface is mutually tied after 1300 DEG C of heat treatment 300h
Structure, the structure of scandium yttrium codope zirconia coating is all single t ' phase structure after spraying state and thermal cycle failure, embody compared with
Good high temperature four directions phase stability.
The heat-proof quality test of scandium yttrium codope zirconia coating uses oxygen-propane burner flame attachment, by coating
Surface is heated to 1300 DEG C, utilizes Non-contacting Infrared Thermometer test base back temperature；Then nothing is tested with same method
The surface of coated substrate and back temperature obtain the adiabatic temperature curve of coating.Nanometer ScYSZ coating adiabatic temperature be about
132±6℃。
The ScYSZ coating of nanoscale class column structure, the coating are prepared for using high energy suspending liquid plasma spraying equipment
Thermal structure stability, inoxidizability, heat-proof quality and thermal cycle life with higher, are remarkably improved metal hot-end component
Service life.
Embodiment 3
The present embodiment is with nanometer scandium yttrium codope Zirconium oxide powder (7.0mol%Sc2O3- 0.5mol%Y2O3-ZrO2) powder
End, TEM pattern are as shown in Figure 1.
By nanometer scandium yttrium codope Zirconium oxide powder using dehydrated alcohol as medium, using zirconia ball in zirconia ball grinding jar
Middle ball milling for 24 hours, takes out and dries and ground, then powder ultrasonic is distributed to the dehydrated alcohol using polyethylene glycol as dispersing agent
In, obtain suspension；The quality of polyethylene glycol is the 1% of polyethylene glycol and dehydrated alcohol gross mass；The quality of polyethylene glycol is
The 1% of polyethylene glycol and dehydrated alcohol gross mass；Suspension solid concentration 50%.Scandium yttrium codope zirconia powder i.e. in suspension
The volumetric concentration of body is 50%.Under continuous stirring, suspension is transported using peristaltic pump, and is sent into after being atomized it with atomizer
The jet stream of supersonic plasma spray gun, prepares coating on matrix after preheat.
In the spraying process of supersonic plasma spray gun: electric current 600A, voltage 150V, main gas argon flow are
100slpm, secondary gas hydrogen flowing quantity are 25slpm, spray distance 50mm, suspension powder feeding rate are 80ml/min, spray gun moves
Dynamic speed: 300mm/s, and preceding substrate preheating is sprayed to 150 DEG C.
200~220 μm of the thickness of prepared thermal protection coating, Coating combination is preferable, measures pottery using image analytical method
The porosity of enamel coating is about 5.0%.
Spraying state is tested using X-ray diffractometer and the object on thermal protection coating surface is mutually tied after 1300 DEG C of heat treatment 300h
Structure, the structure of scandium yttrium codope zirconia coating is all single t ' phase structure after spraying state and thermal cycle failure, embody compared with
Good high temperature four directions phase stability.
The heat-proof quality test of scandium yttrium codope zirconia coating uses oxygen-propane burner flame attachment, by coating
Surface is heated to 1300 DEG C, utilizes Non-contacting Infrared Thermometer test base back temperature；Then nothing is tested with same method
The surface of coated substrate and back temperature obtain the adiabatic temperature curve of coating.Nanometer ScYSZ coating adiabatic temperature be about
105±8℃。
The ScYSZ coating of nanoscale class column structure, the coating are prepared for using high energy suspending liquid plasma spraying equipment
Thermal structure stability, inoxidizability, heat-proof quality and thermal cycle life with higher, are remarkably improved metal hot-end component
Service life.
Embodiment 4
The present embodiment is with nanometer scandium yttrium codope Zirconium oxide powder (5.5mol%Sc2O3- 2.0mol%Y2O3-ZrO2) powder
End.
By nanometer scandium yttrium codope Zirconium oxide powder using dehydrated alcohol as medium, using zirconia ball in zirconia ball grinding jar
Middle ball milling for 24 hours, takes out and dries and ground, then powder ultrasonic is distributed to the dehydrated alcohol using polyethylene glycol as dispersing agent
In, obtain suspension；The quality of polyethylene glycol is the 1% of polyethylene glycol and dehydrated alcohol gross mass；And it carries out continuing stirring.Benefit
Suspension slurry is transported with peristaltic pump, and is sent into supersonic plasma spray gun jet stream after being atomized it with atomizer, suspension
Solid concentration 40%.The volumetric concentration of scandium yttrium codope Zirconium powder is 40% i.e. in suspension.It is transported using peristaltic pump outstanding
Supernatant liquid, and supersonic plasma spray gun jet stream, prepares coating on matrix after preheat are sent into after being atomized it with atomizer.
In the spraying process of supersonic plasma spray gun: electric current 500A, voltage 110V, main gas argon flow are
75slpm, secondary gas hydrogen flowing quantity are 10slpm, spray distance 50mm, suspension powder feeding rate are 35ml/min, spray gun moves
Dynamic speed: 600mm/s, and preceding substrate preheating is sprayed to 150 DEG C.
180~220 μm of the thickness of prepared thermal protection coating, Coating combination is preferable, measures pottery using image analytical method
The porosity of enamel coating is about 11.0%.
Spraying state is tested using X-ray diffractometer and the object on thermal protection coating surface is mutually tied after 1300 DEG C of heat treatment 300h
Structure, the structure of scandium yttrium codope zirconia coating is all single t ' phase structure after spraying state and thermal cycle failure, embody compared with
Good high temperature four directions phase stability.
The heat-proof quality test of scandium yttrium codope zirconia coating uses oxygen-propane burner flame attachment, by coating
Surface is heated to 1300 DEG C, utilizes Non-contacting Infrared Thermometer test base back temperature；Then nothing is tested with same method
The surface of coated substrate and back temperature obtain the adiabatic temperature curve of coating.Nanometer ScYSZ coating adiabatic temperature be about
112±7℃。
The ScYSZ coating of nanoscale class column structure, the coating are prepared for using high energy suspending liquid plasma spraying equipment
Thermal structure stability, inoxidizability, heat-proof quality and thermal cycle life with higher, are remarkably improved metal hot-end component
Service life.
Embodiment 5
The present embodiment is by nanometer scandium yttrium codope Zirconium oxide powder (based on the amount percentage of substance, including 4.0mol%'s
Sc2O3, 1mol% Y2O3, remaining is ZrO2) powder.
By nanometer scandium yttrium codope Zirconium oxide powder using dehydrated alcohol as medium, using zirconia ball in zirconia ball grinding jar
Middle ball milling for 24 hours, takes out and dries and ground, then powder ultrasonic is distributed to the dehydrated alcohol using polyethylene glycol as dispersing agent
In, obtain suspension；The quality of polyethylene glycol is the 2% of polyethylene glycol and dehydrated alcohol gross mass；And it carries out continuing stirring.Benefit
Suspension slurry is transported with peristaltic pump, and is sent into the jet stream of supersonic plasma spray gun after being atomized it with atomizer, is suspended
Liquid-solid phase concentration 30%.The volumetric concentration of scandium yttrium codope Zirconium powder is 30% i.e. in suspension.It is transported using peristaltic pump
Suspension, and the jet stream of supersonic plasma spray gun is sent into after being atomized it with atomizer, it prepares and applies on matrix after preheat
Layer.
During suspension spray: electric current 350A, voltage 120V, main gas argon flow be 80slpm, secondary gas hydrogen
Throughput is 15slpm, spray distance 60mm, suspension powder feeding rate are 40ml/min, spray gun movement speed is 400mm/s,
And preceding substrate preheating is sprayed to 200 DEG C.
Embodiment 6
The present embodiment is by nanometer scandium yttrium codope Zirconium oxide powder (based on the amount percentage of substance, including 8.0mol%'s
Sc2O3, 1.5mol% Y2O3, remaining is ZrO2) powder.
By nanometer scandium yttrium codope Zirconium oxide powder using dehydrated alcohol as medium, using zirconia ball in zirconia ball grinding jar
Middle ball milling for 24 hours, takes out and dries and ground, then powder ultrasonic is distributed to the dehydrated alcohol using polyethylene glycol as dispersing agent
In, obtain suspension；The quality of polyethylene glycol is the 3% of polyethylene glycol and dehydrated alcohol gross mass；And it carries out continuing stirring.Benefit
Suspension slurry is transported with peristaltic pump, and is sent into the jet stream of supersonic plasma spray gun, suspension after being atomized it with atomizer
Solid concentration 25%.The volumetric concentration of scandium yttrium codope Zirconium powder is 25% i.e. in suspension.It is transported using peristaltic pump outstanding
Supernatant liquid, and the jet stream of supersonic plasma spray gun is sent into after being atomized it with atomizer, prepares coating on matrix after preheat.
Suspension is in spraying process: electric current 450A, voltage 130V, main gas argon flow be 90slpm, secondary gas
Hydrogen flowing quantity is 20slpm, spray distance 70mm, suspension powder feeding rate are 60ml/min, spray gun movement speed is 700mm/
S, and preceding substrate preheating is sprayed to 250 DEG C.
The above, only specific embodiments of the present invention, when that cannot be limited the scope of implementation of the present invention with this, greatly
All equivalent changes and modifications done according to present patent application range and description, should still belong to the invention patent and cover
In range.
Claims (10)
1. a kind of preparation method of scandium yttrium codope zirconia coating, which is characterized in that surpass scandium yttrium codope Zirconium oxide powder
Sound is distributed to obtain suspension in the dehydrated alcohol containing polyethylene glycol, transports suspension using peristaltic pump, and use atomizer
Make to be sent into after suspension atomization in the jet stream of supersonic plasma spray gun and prepares coating on matrix after preheat.
2. a kind of preparation method of scandium yttrium codope zirconia coating according to claim 1, which is characterized in that by scandium yttrium
Before codope Zirconium oxide powder ultrasonic disperse, first using dehydrated alcohol as medium, scandium yttrium codope is aoxidized using zirconium oxide balls
Zirconium powder body takes out in 24~48h of ball milling in grinding jar and dries and ground, obtain scandium yttrium codope Zirconium oxide powder.
3. a kind of preparation method of scandium yttrium codope zirconia coating according to claim 1, which is characterized in that scandium yttrium is total
The particle size of doped zirconia powder is 10-100nm.
4. a kind of preparation method of scandium yttrium codope zirconia coating according to claim 1, which is characterized in that scandium yttrium is total
Doped zirconia powder is by mole meter, including 4.0~8.0%Sc2O3, 0.5~2.0%Y2O3, remaining is ZrO2；
Scandium yttrium codope zirconia powder preparation: the ZrOCl for being 99.9% with purity2·8H2O、Y(NO3)3·6H2O and Sc
(NO3)36H2O is raw material, and using deionized water as solvent, percentage, is configured to tri- metal ion species of Zr, Y and Sc in molar ratio
Total concentration be 0.4mol/L aqueous solution, stir to clarify it is transparent after, obtain solution, added into solution six water citric acids and
Polyethylene glycol, wherein the additional amount of citric acid is 100g in every liter of solution, the additional amount of polyethylene glycol is 10g in every liter of solution,
It is stirred for clear, colloidal sol is made；Then NH is added under stirring condition3·H2O adjusts pH to 8-9, and aged, washing is done
Xerogel is obtained after dry, grinding obtains scandium yttrium codope Zirconium powder.
5. a kind of preparation method of scandium yttrium codope zirconia coating according to claim 1, which is characterized in that containing poly-
The quality of polyethylene glycol is the 1~3% of polyethylene glycol and dehydrated alcohol gross mass in the dehydrated alcohol of ethylene glycol.
6. a kind of preparation method of scandium yttrium codope zirconia coating according to claim 1, which is characterized in that suspension
The volumetric concentration of middle scandium yttrium codope Zirconium powder is 20~50%.
7. a kind of preparation method of scandium yttrium codope zirconia coating according to claim 1, which is characterized in that matrix is
Nickel base superalloy；Substrate preheating is to 200 ± 50 DEG C.
8. a kind of preparation method of scandium yttrium codope zirconia coating according to claim 1, which is characterized in that preparation applies
The technological parameter of layer are as follows: electric current is 300~600A, voltage is 100~150V, main gas argon flow is 50~100slpm, secondary
Gas hydrogen flowing quantity is 10~25slpm, spray distance is 40~80mm, suspension powder feeding rate is 20~80ml/min and super
Velocity of sound plasma gun movement speed is 300~800mm/s.
9. the scandium yttrium codope zirconia coating of preparation according to the method for claim 1, which is characterized in that the hole of coating
Rate is 5.0~15.0%, and vertical crack density is 6~12mm in coating-1。
10. scandium yttrium codope zirconia coating according to claim 9, which is characterized in that vertical crack and painting in coating
Layer/basal body interface is at 45~90 ° of angles.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851330A (en) * | 2021-01-23 | 2021-05-28 | 西安交通大学 | Method for preparing whisker toughening composite coating by liquid phase method spraying process |
| CN113912394A (en) * | 2021-10-19 | 2022-01-11 | 西安交通大学 | Zirconium dioxide-based ceramic heat insulation material substituted and doped by multi-element rare earth elements and preparation method thereof |
| CN117438626A (en) * | 2023-12-18 | 2024-01-23 | 中石油深圳新能源研究院有限公司 | Electrolyte material of solid oxide fuel cell and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740372A (en) * | 2005-09-21 | 2006-03-01 | 武汉理工大学 | Liquid phase plasma spraying process of preparing nanometer zirconia thermal-barrier coating |
| CN101481247A (en) * | 2009-02-25 | 2009-07-15 | 中国航空工业第一集团公司北京航空制造工程研究所 | Preparation method of high-phase-stability composite ceramic powder containing binary rare earth oxide |
-
2019
- 2019-04-10 CN CN201910284660.XA patent/CN110078498A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740372A (en) * | 2005-09-21 | 2006-03-01 | 武汉理工大学 | Liquid phase plasma spraying process of preparing nanometer zirconia thermal-barrier coating |
| CN101481247A (en) * | 2009-02-25 | 2009-07-15 | 中国航空工业第一集团公司北京航空制造工程研究所 | Preparation method of high-phase-stability composite ceramic powder containing binary rare earth oxide |
Non-Patent Citations (5)
| Title |
|---|
| MOHAMMAD REZA LOGHMAN-ESTARKI ET AL.: "Large scale synthesis of non-transformable tetragonal Sc2O3, Y2O3 doped ZrO2 nanopowders via the citric acid based gel method to obtain plasma sprayed coating", 《CERAMICS INTERNATIONAL》 * |
| W. FAN等: "Improved properties of sc andia and yttria co-doped zirconia as a potential thermal barrier material for high temperature applications", 《JOURNAL OF THE EUROPEAN CERAMIC SOCIETY》 * |
| W. FAN等: "Microstructural design and properties of supersonic suspension plasma sprayed thermal barrier coatings", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| 何轶伦等: "Sc2O3-Y2O3-ZrO2纳米复合陶瓷粉末的制备", 《矿冶工程》 * |
| 杨小毛: "《钴基稀土复合材料应用研究》", 31 December 2011, 上海大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851330A (en) * | 2021-01-23 | 2021-05-28 | 西安交通大学 | Method for preparing whisker toughening composite coating by liquid phase method spraying process |
| CN112851330B (en) * | 2021-01-23 | 2022-03-08 | 西安交通大学 | Method for preparing whisker toughening composite coating by liquid phase method spraying process |
| CN113912394A (en) * | 2021-10-19 | 2022-01-11 | 西安交通大学 | Zirconium dioxide-based ceramic heat insulation material substituted and doped by multi-element rare earth elements and preparation method thereof |
| CN117438626A (en) * | 2023-12-18 | 2024-01-23 | 中石油深圳新能源研究院有限公司 | Electrolyte material of solid oxide fuel cell and preparation method thereof |
| CN117438626B (en) * | 2023-12-18 | 2024-03-22 | 中石油深圳新能源研究院有限公司 | Electrolyte material of solid oxide fuel cell and preparation method thereof |
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