CN109837496A - A kind of preparation method of ytterbium silicate plasma spraying powder - Google Patents
A kind of preparation method of ytterbium silicate plasma spraying powder Download PDFInfo
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Abstract
The present invention provides a kind of preparation method of ytterbium silicate plasma spraying powder, its step is that commercially available Yb2O3 and SiO2 powder is synthesized Yb2SiO5 powder by solid reaction process, pass through 1~6 μm of preferable particle size of powder of screening, Yb2SiO5 reunion powder is prepared by the method for spray drying again, then partial size screening is carried out to Yb2SiO5 reunion powder, obtains the plasma spraying powder of the suitable preparation densification Environmental Barrier Coatings on Si-based Ceramics of 10 ~ 35 μm of particle size ranges.When for plasma spraying preparation EBC coating, Yb2SiO5 reunion powder obtained is sent into plasma gun flame stream, powder is heated, reunion powder is dispersed into primary granule at once, since partial size is suitable for, powder can form the molten drop melted completely, and accelerating impact is in matrix surface under the action of plasma flame flow, so as to form fine and close coating.
Description
Technical field
The present invention relates to a kind of preparation methods of hot spray powder, refer specifically to a kind of system of ytterbium silicate plasma spraying powder
Preparation Method.
Background technique
With modern Aviation industrial expansion, the thrust ratio of aircraft engine is higher and higher, inlet temperature before turbine
It increases accordingly, the requirement to material is also increasingly harsher.Thermal structure material used in engine is high temperature alloy at present, is caused
The structure efficiency of engine is low and complicates, and is difficult to adapt to the thermal environment of high thrust-weight ratio engine of new generation.With high temperature alloy phase
Than silicon carbide fiber reinforced silicon carbide composite material (SiCf/ SiC) because having the advantages that high temperature resistant, low-density, high intensity, it is high
The ideal material of thrust ratio aero-engine hot-end component.It is a large amount of due to containing in air under engine high-temperature Service Environment
Vapor, oxygen, vapor in SiC and air react and generate SiO2, and SiO2Then occur with vapor anti-
The Si (OH) for being easy to volatilize should be generated4, promote SiCfFiber in/SiC exposes in air, the oxygen in SiC fiber and air
Gas reacts again, so recycles, eventually leads to SiCfThe performance of/SiC sharply declines.
In order to extend SiCfService life of/the SiC under high thrust ratio aero-engine working environment, in SiCf/ SiC base
It is a kind of effective solution method that body surface face, which coats Environmental Barrier Coatings on Si-based Ceramics (EBC, Environmental Barrier Coating),.
Typical Si/3Al2O3·2SiO2/BSAS(Ba1-xSrxAl2Si2O8, 0≤x≤1) and three-decker Environmental Barrier Coatings on Si-based Ceramics obtained
Using.It is higher using temperature in order to pursue, the research direction of EBC system surface layer is concentrated mainly on rare earth silicate,
Wherein Yb2SiO5Material is more than 1400 DEG C of phase stable structure in temperature, while its thermal expansion coefficient and 3Al2O3·2SiO2、
The intermediate layer materials such as BSAS are closer to, and therefore, can be used as the potential candidate material of EBC rare earth silicate surface layer.
With the development of EBC coating material, preparation process develops therewith, mainly includes following several preparation methods: slurry
Material method (Slurry Processing, SP), sol-gel method (Sol-Gel), polymer conversion china-clay method (Polymer-
Derived Ceramic, PDC) and plasma spraying method (Plasma Spaying, PS) etc..Now by several common preparation methods
Basic process and respective advantage and disadvantage be described below:
Slurry method is that EBC powder body material and dispersing agent appropriate, binder, solvent etc. is used to mix, by brushing or impregnating
Method prepares coating green compact, be expected after baking oven isothermal holding removes the solvent in removing coating green compact, then through high temperature sintering
EBC coating.The performance of coating depends primarily on the performance parameter of slurry, size distribution, the viscosity of slurry, slurry such as powder
Stability and rheological property etc..The advantages of slurry method be preparation process it is simple, it is at low cost, can be prepared on complex component surface
Divide uniform coating.The disadvantage is that the coating layer thickness disposably prepared is relatively thin, coating cracking is easily caused because blocked up.This is just needed
Repeatedly preparation, repeatedly sintering, and damage can be caused on SiC toughened fiber and influence mechanics with excessively high sintering temperature by being repeatedly sintered
Performance.
Sol-gel method is a kind of method of traditional prepares coating, it is to utilize metallic compound after alcoholysis or hydrolysis
Formed colloidal sol, and by colloidal sol be coated to matrix surface formed gel after, by heat treatment removal organic matter form coating.It applies
The performance of layer is influenced by factors such as organosol polymeric structure, viscosity and times.The advantages of method is that low in cost, preparation process is simple
It singly and can be in complex shaped components surface prepares coating.The disadvantage is that heat treatment process because in gel large amount of organic volatilization cause compared with
Large volume is shunk, therefore is difficult to prepare dense coating.
Polymer conversion china-clay method be the 1960s development prepare block ceramic method.Descendant be based on its with it is molten
The some common ground of glue-gel method (from liquid precursor to the transition process of solid product) are used in coating preparation.Its
Preparation process is similar with sol-gel method, and subject polymer is coated to composite material surface, crosslinked solidification, high temperature first
Processing makes polymer cracking obtain expectation coating.Coating layer thickness is by the concentration of polymer, ceramic yield and preparation technology of coating
State modulator.From process made above and its intrinsic feature as it can be seen that the major advantage of polymer conversion china-clay method prepares coating with
Sol-gel method is similar, i.e., at low cost, preparation process is simple, can be in surfaces of complex shape prepares coating, and what is more merited attention is only
Special advantage is that the low temperature preparation and photocuring of coating can be achieved, and is repaired online with completing coating.The disadvantage is that polymer cracking process
Large volume contraction lead to coating there are a large amount of stomatas and crackle, to influence the service performance of coating.
Plasma spray coating process comprehensive performance is preferable, its basic procedure is as follows, first by substrate preheating, recycle etc. from
Daughter flame stream heating fusing dusty spray, and by sprayed on material high-speed impact to workpiece under the action of high speed plasma flame stream
Surface forms flat layer and moment solidification, ultimately forms and linked by infinite variety particle is interlaced, the layer stacked in wave
Shape structure coating.The generation of so-called plasma is associated gas (Ar or N2, add 5% ~ 10%H2Gaseous mixture) enter electricity
It is heated by the electric arc simultaneously and dissociates behind the arcuation area of pole chamber, central temperature is up to 14700 DEG C or more.It is passed through by the powder body material of spray feed
Carrier gas enters in compressed high speed plasma jet, and fusing is presented quickly or semi-molten state impinges upon associated materials surface,
It generates and is plastically deformed and is adhered to its surface and obtains dense coating.The technological parameter that plasma spray coating process needs to control is very
It is more, partial size, mobility including dusty spray, spray gun movement speed, spraying current, spray distance and flow rate of carrier gas etc., rationally
Parameter configuration be the key that the superior coating of processability.The advantages of plasma spraying method is can efficiently to obtain bond strength height
Coating.Coating integrity can be superior, and in multi-field acquisition practical application, also becomes the main method for preparing EBC coating.Its
Major defect is that amount of powder is this " half-cooked " to make it harder to obtain fine and close painting there are micro- molten or unmelted phenomenon in spraying process
Layer, therefore obtain suitable Yb2SiO5Dusty spray is particularly critical to the performance of coating.
Summary of the invention
For the deficiency of existing EBC coating plasma spraying powder, the present invention provide in a kind of EBC coating ytterbium silicate etc. from
The preparation method of sub- dusty spray, steps are as follows:
(1) it is that 1:1 is uniformly mixed in molar ratio by 0.5~3 μm of Yb2O3 and SiO2 by powder diameter, deionized water is then added,
By planetary ball mill positive and negative rotation ball milling certain time, the uniform Yb2O3 and SiO2 mixed-powder of ingredient is obtained；
(2) mixed-powder that step (1) obtains is dried through baking oven, then the mixed-powder of drying is put into resistance furnace and is calcined
And furnace cooling, Yb2SiO5 synthetic powder is obtained, and the powder for sieving 1~6 μm of preferable particle size is spare；
(3) the Yb2SiO5 powder that step (2) obtain is configured to spray drying precursor pulp, which is passed through
Planetary ball mill positive and negative rotation ball milling certain time obtains uniform sizing material；
(4) slurry that step (3) prepares is prepared into Yb2SiO5 reunion powder by spray drying device, to doing by spraying
The Yb2SiO5 reunion powder of dry preparation carries out partial size screening, obtains the plasma spraying powder of 10 ~ 35 μm of particle size ranges.
In above scheme, spray drying Yb2SiO5 powder precursor slurry prepares ratio in the step (3) are as follows: dispersion
Agent polyacrylic acid (PAA) content is 0.5~0.9wt.%, and binder polyvinyl alcohol (PVA) content is 1~3wt.%, and defrother is just
Butanol content is 0.6~1.2wt.%, and the pH value of precursor pulp is controlled 8~11.
In above scheme, the step (4) prepares Yb2SiO5 reunion powder, the work of equipment using spray drying device
Parameter are as follows: 17000~20000r/min of atomizer rotating speed, high temperature dry air inlet temperature control the outlet at 180~200 DEG C
Temperature is controlled at 90~120 DEG C.
In above scheme, planetary ball mill equipment task time and parameter in the step (1): positive and negative rotation ball milling for 24 hours, revolving speed
For 300r/min.
In above scheme, precursor pulp passes through planetary ball mill working time and parameter in the step (3): positive and negative
Turn ball milling 10h, generate excessively high temperature in mechanical milling process in order to prevent, to slurry generate adverse effect, set ball milling program as
1h is rotated forward, 0.5h is suspended, inverts 1h, revolving speed 200r/min.
In above scheme, 80 DEG C of mixed-powder drying temperature in the step (2), 1500 DEG C of calcination temperature, calcination time 10h.
The present invention provide it is a kind of meet plasma spraying preparation EBC coating Yb2SiO5The preparation method of dusty spray, as
Aero-engine SiC/SiC CMC component, Service Environment is severe, is faced with high-temperature water oxygen corrosion and fused salt CMAS (CaO-
MgO-Al2O3-SiO2) corrosion, therefore the necessary consistency with higher of EBC coating, to prevent steam and melting during being on active service
CMAS erosion, which permeates toward coat inside and mechanical and heat chemistry occurs with coating, to interact, and disbonding is made to fail.Tradition
Powder primary particle size used by plasma spraying is bigger than normal, and powder diameter is also bigger than normal after reunion, therefore the powder in spraying process
End causes coating " half-cooked " phenomenon occur, it is more difficult to obtain dense coating there are more micro- molten or unmelted phenomenon.The present invention passes through
Solid reaction process makes Yb2SiO5Powder, powder diameter are controlled at 1~6 μm, then are reunited using the method for mist projection granulating
Powder, to obtain the excellent dusty spray of mobile performance, size controlling is at 10 ~ 35 μm.Yb2SiO5 produced by the present invention reunites
When powder plasma spraying preparation EBC coating, when reunion powder is sent into plasma gun flame stream, powder is heated, reunion powder
It is dispersed into primary granule at once, since partial size is suitable for, powder can form the molten drop melted completely, and in the effect of plasma flame flow
Lower accelerating impact is in matrix surface, so as to form fine and close coating.
Detailed description of the invention
The Yb of Fig. 1 embodiment 12SiO5Reunion powder electron scanning micrograph.
Specific embodiment
Preparation method of the invention is described further combined with specific embodiments below.
Embodiment 1
The Yb for being 0.5~3 μm by commercial powder partial size2O3And SiO21:1 weighs mixing in molar ratio, and it is logical that deionized water is added
Cross planetary ball mill positive and negative rotation ball milling for 24 hours, revolving speed 300r/min, to obtain the uniform Yb of ingredient2O3And SiO2Mixed powder
End.It is dry to be placed in oxidation zirconium crucible and calcined in 1500 DEG C of resistance furnaces mixed-powder by baking oven in 80 DEG C of dryings
10h and furnace cooling, by above-mentioned solid phase reaction method to obtain Yb2SiO5Synthetic powder passes through 1~6 μm of preferable particle size of screening
Powder.By preferred Yb2SiO5Powder is configured to spray drying precursor pulp, contains wherein dispersing agent polyacrylic acid (PAA) is added
Amount is 0.5wt.%, and binder polyvinyl alcohol (PVA) content is 1wt.%, and defrother levels of n-butanol is 0.6wt.%, the pH of slurry
Value control generates excessively high temperature 8, then by planetary ball mill positive and negative rotation ball milling 10h in order to prevent in mechanical milling process, right
Slurry generates adverse effect, sets ball milling program to rotate forward 1h, suspends 0.5h, invert 1h, revolving speed 200r/min.It will prepare
Yb2SiO5Powder slurries prepare reunion powder by spray drying device, and wherein atomizer rotating speed is 17000r/min, high temperature
At 180 DEG C, outlet temperature is controlled at 90 DEG C the control of dry air inlet temperature.Finally to the reunion Yb of spray drying preparation2SiO5
Powder is sieved by partial size, obtains the powder of the suitable plasma spraying of 10 ~ 35 μm of particle size ranges.
Embodiment 2
The Yb for being 0.5~3 μm by commercial powder partial size2O3And SiO21:1 weighs mixing in molar ratio, and it is logical that deionized water is added
Cross planetary ball mill positive and negative rotation ball milling for 24 hours, revolving speed 300r/min, to obtain the uniform Yb of ingredient2O3And SiO2Mixed powder
End.It is dry to be placed in oxidation zirconium crucible and calcined in 1500 DEG C of resistance furnaces mixed-powder by baking oven in 80 DEG C of dryings
10h and furnace cooling, by above-mentioned solid phase reaction method to obtain Yb2SiO5Synthetic powder passes through 1~6 μm of preferable particle size of screening
Powder.By preferred Yb2SiO5Powder is configured to spray drying precursor pulp, contains wherein dispersing agent polyacrylic acid (PAA) is added
Amount is 0.9wt.%, and binder polyvinyl alcohol (PVA) content is 3wt.%, and defrother levels of n-butanol is 1.2wt.%, the pH of slurry
Value control generates excessively high temperature 11, then by planetary ball mill positive and negative rotation ball milling 10h in order to prevent in mechanical milling process,
Adverse effect is generated to slurry, ball milling program is set to rotate forward 1h, suspends 0.5h, invert 1h, revolving speed 200r/min.It will preparation
Good Yb2SiO5Powder slurries prepare reunion powder by spray drying device, and wherein atomizer rotating speed is 20000r/min, high
At 200 DEG C, outlet temperature is controlled at 120 DEG C for warm dry air inlet temperature control.Finally to the reunion of spray drying preparation
Yb2SiO5Powder is sieved by partial size, obtains the powder of the suitable plasma spraying of 10 ~ 35 μm of particle size ranges.
Embodiment 3
The Yb for being 0.5~3 μm by commercial powder partial size2O3And SiO21:1 weighs mixing in molar ratio, and it is logical that deionized water is added
Cross planetary ball mill positive and negative rotation ball milling for 24 hours, revolving speed 300r/min, to obtain the uniform Yb of ingredient2O3And SiO2Mixed powder
End.It is dry to be placed in oxidation zirconium crucible and calcined in 1500 DEG C of resistance furnaces mixed-powder by baking oven in 80 DEG C of dryings
10h and furnace cooling, by above-mentioned solid phase reaction method to obtain Yb2SiO5Synthetic powder passes through 1~6 μm of preferable particle size of screening
Powder.By preferred Yb2SiO5Powder is configured to spray drying precursor pulp, contains wherein dispersing agent polyacrylic acid (PAA) is added
Amount is 0.6wt.%, and binder polyvinyl alcohol (PVA) content is 2wt.%, and defrother levels of n-butanol is 0.8wt.%, the pH of slurry
Value control generates excessively high temperature 9, then by planetary ball mill positive and negative rotation ball milling 10h in order to prevent in mechanical milling process, right
Slurry generates adverse effect, sets ball milling program to rotate forward 1h, suspends 0.5h, invert 1h, revolving speed 200r/min.It will prepare
Yb2SiO5Powder slurries prepare reunion powder by spray drying device, and wherein atomizer rotating speed is 18500r/min, high temperature
At 195 DEG C, outlet temperature is controlled at 100 DEG C the control of dry air inlet temperature.Finally to the reunion of spray drying preparation
Yb2SiO5Powder is sieved by partial size, obtains the powder of the suitable plasma spraying of 10 ~ 35 μm of particle size ranges.
Embodiment 4
The Yb for being 0.5~3 μm by commercial powder partial size2O3And SiO21:1 weighs mixing in molar ratio, and it is logical that deionized water is added
Cross planetary ball mill positive and negative rotation ball milling for 24 hours, revolving speed 300r/min, to obtain the uniform Yb of ingredient2O3And SiO2Mixed powder
End.It is dry to be placed in oxidation zirconium crucible and calcined in 1500 DEG C of resistance furnaces mixed-powder by baking oven in 80 DEG C of dryings
10h and furnace cooling, by above-mentioned solid phase reaction method to obtain Yb2SiO5Synthetic powder passes through 1~6 μm of preferable particle size of screening
Powder.By preferred Yb2SiO5Powder is configured to spray drying precursor pulp, contains wherein dispersing agent polyacrylic acid (PAA) is added
Amount is 0.7wt.%, and binder polyvinyl alcohol (PVA) content is 1wt.%, and defrother levels of n-butanol is 0.9wt.%, the pH of slurry
Value control generates excessively high temperature 10, then by planetary ball mill positive and negative rotation ball milling 10h in order to prevent in mechanical milling process,
Adverse effect is generated to slurry, ball milling program is set to rotate forward 1h, suspends 0.5h, invert 1h, revolving speed 200r/min.It will preparation
Good Yb2SiO5Powder slurries prepare reunion powder by spray drying device, and wherein atomizer rotating speed is 19000r/min, high
At 190 DEG C, outlet temperature is controlled at 110 DEG C for warm dry air inlet temperature control.Finally to the reunion of spray drying preparation
Yb2SiO5Powder is sieved by partial size, obtains the powder of the suitable plasma spraying of 10 ~ 35 μm of particle size ranges.
Embodiment 5
The Yb for being 0.5~3 μm by commercial powder partial size2O3And SiO21:1 weighs mixing in molar ratio, and it is logical that deionized water is added
Cross planetary ball mill positive and negative rotation ball milling for 24 hours, revolving speed 300r/min, to obtain the uniform Yb of ingredient2O3And SiO2Mixed powder
End.It is dry to be placed in oxidation zirconium crucible and calcined in 1500 DEG C of resistance furnaces mixed-powder by baking oven in 80 DEG C of dryings
10h and furnace cooling, by above-mentioned solid phase reaction method to obtain Yb2SiO5Synthetic powder passes through 1~6 μm of preferable particle size of screening
Powder.By preferred Yb2SiO5Powder is configured to spray drying precursor pulp, contains wherein dispersing agent polyacrylic acid (PAA) is added
Amount is 0.9wt.%, and binder polyvinyl alcohol (PVA) content is 3wt.%, and defrother levels of n-butanol is 1.1wt.%, the pH of slurry
Value control generates excessively high temperature 10, then by planetary ball mill positive and negative rotation ball milling 10h in order to prevent in mechanical milling process,
Adverse effect is generated to slurry, ball milling program is set to rotate forward 1h, suspends 0.5h, invert 1h, revolving speed 200r/min.It will preparation
Good Yb2SiO5Powder slurries prepare reunion powder by spray drying device, and wherein atomizer rotating speed is 20000r/min, high
At 200 DEG C, outlet temperature is controlled at 120 DEG C for warm dry air inlet temperature control.Finally to the reunion of spray drying preparation
Yb2SiO5Powder is sieved by partial size, obtains the powder of the suitable plasma spraying of 10 ~ 35 μm of particle size ranges.
Embodiment 6
The Yb for being 0.5~3 μm by commercial powder partial size2O3And SiO21:1 weighs mixing in molar ratio, and it is logical that deionized water is added
Cross planetary ball mill positive and negative rotation ball milling for 24 hours, revolving speed 300r/min, to obtain the uniform Yb of ingredient2O3And SiO2Mixed powder
End.It is dry to be placed in oxidation zirconium crucible and calcined in 1500 DEG C of resistance furnaces mixed-powder by baking oven in 80 DEG C of dryings
10h and furnace cooling, by above-mentioned solid phase reaction method to obtain Yb2SiO5Synthetic powder passes through 1~6 μm of preferable particle size of screening
Powder.By preferred Yb2SiO5Powder is configured to spray drying precursor pulp, contains wherein dispersing agent polyacrylic acid (PAA) is added
Amount is 0.9wt.%, and binder polyvinyl alcohol (PVA) content is 2wt.%, and defrother levels of n-butanol is 1.2wt.%, the pH of slurry
Value control generates excessively high temperature 8, then by planetary ball mill positive and negative rotation ball milling 10h in order to prevent in mechanical milling process, right
Slurry generates adverse effect, sets ball milling program to rotate forward 1h, suspends 0.5h, invert 1h, revolving speed 200r/min.It will prepare
Yb2SiO5Powder slurries prepare reunion powder by spray drying device, and wherein atomizer rotating speed is 17000r/min, high temperature
At 180 DEG C, outlet temperature is controlled at 90 DEG C the control of dry air inlet temperature.Finally to the reunion Yb of spray drying preparation2SiO5
Powder is sieved by partial size, obtains the powder of the suitable plasma spraying of 10 ~ 35 μm of particle size ranges.
Concrete application: Yb2SiO5 reunion powder obtained in above embodiments is applied when for plasma spraying preparation EBC
When layer, Yb2SiO5 reunion powder obtained is sent into plasma gun flame stream, and powder is heated, and reunion powder is dispersed into original at once
Beginning particle, since partial size is suitable for, powder can form the molten drop melted completely, and accelerating impact exists under the action of plasma flame flow
Matrix surface, so as to form fine and close coating.
Claims (6)
1. a kind of preparation method of ytterbium silicate plasma spraying powder, which is characterized in that method includes the following steps:
The Yb for being 0.5~3 μm by powder diameter2O3And SiO21:1 is uniformly mixed in molar ratio, and deionized water is then added, passes through
Planetary ball mill positive and negative rotation ball milling certain time obtains the uniform Yb of ingredient2O3And SiO2Mixed-powder；
The mixed-powder that step (1) obtains is dried through baking oven, then the mixed-powder of drying is put into resistance furnace and is calcined simultaneously
Furnace cooling obtains Yb2SiO5 synthetic powder, and the powder for sieving 1~6 μm of preferable particle size is spare；
The Yb2SiO5 powder that step (2) obtain is configured to spray drying precursor pulp, which is passed through into planet
Formula ball mill positive and negative rotation ball milling certain time obtains uniform sizing material；
The slurry that step (3) prepares is prepared into Yb2SiO5 reunion powder by spray drying device, spray drying is made
Standby Yb2SiO5 reunion powder carries out partial size screening, obtains the plasma spraying powder of 10 ~ 35 μm of particle size ranges.
2. the preparation method of ytterbium silicate plasma spraying powder according to claim 1, which is characterized in that the step
(3) in spray drying Yb2SiO5 powder precursor slurry prepare ratio are as follows: dispersing agent polyacrylic acid (PAA) content be 0.5~
0.9wt.%, binder polyvinyl alcohol (PVA) content are 1~3wt.%, and defrother levels of n-butanol is 0.6~1.2wt.%, forerunner
The pH value of somaplasm material is controlled 8~11.
3. the preparation method of ytterbium silicate plasma spraying powder according to claim 1, which is characterized in that the step
(4) Yb2SiO5 reunion powder, the running parameter of equipment are prepared using spray drying device are as follows: atomizer rotating speed 17000~
20000r/min, at 180~200 DEG C, outlet temperature is controlled at 90~120 DEG C the control of high temperature dry air inlet temperature.
4. the preparation method of ytterbium silicate plasma spraying powder according to claim 1, which is characterized in that the step
(1) planetary ball mill equipment task time and parameter in: positive and negative rotation ball milling for 24 hours, revolving speed 300r/min.
5. the preparation method of ytterbium silicate plasma spraying powder according to claim 1, which is characterized in that the step
(3) precursor pulp passes through planetary ball mill working time and parameter: positive and negative rotation ball milling 10h in, in order to prevent mechanical milling process
It is middle to generate excessively high temperature, adverse effect is generated to slurry, ball milling program is set to rotate forward 1h, suspends 0.5h, invert 1h, revolving speed
For 200r/min.
6. the preparation method of ytterbium silicate plasma spraying powder according to claim 1, which is characterized in that the step
(2) 80 DEG C of mixed-powder drying temperature in, 1500 DEG C of calcination temperature, calcination time 10h.
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| CN111017982A (en) * | 2019-12-31 | 2020-04-17 | 中南大学 | Nano-grade rare earth silicate powder material and application thereof |
| CN112608161A (en) * | 2021-01-04 | 2021-04-06 | 中国航空制造技术研究院 | Preparation method of metal toughening type rare earth silicate powder |
| CN113025945A (en) * | 2021-03-02 | 2021-06-25 | 中国科学院长春应用化学研究所 | Preparation method of high-temperature oxidation-resistant rare earth silicate thermal barrier coating on surface of titanium alloy composite material |
| CN113233883A (en) * | 2021-04-16 | 2021-08-10 | 中国科学院金属研究所 | Quaternary rare earth silicate solid solution spherical agglomerated powder and preparation method thereof |
| CN113582189A (en) * | 2021-06-18 | 2021-11-02 | 赣州嘉源新材料有限公司 | Preparation method of rare earth silicate for thermal barrier spraying |
| CN113955763A (en) * | 2021-12-03 | 2022-01-21 | 山东亚赛陶瓷科技有限公司 | Ytterbium silicate spheroidized powder and plasma in-situ synthesis preparation method thereof |
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| CN113582189A (en) * | 2021-06-18 | 2021-11-02 | 赣州嘉源新材料有限公司 | Preparation method of rare earth silicate for thermal barrier spraying |
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