CN101078117A - Method for preparing heat barrier coating with column form crystal structure ceramic layer - Google Patents

Method for preparing heat barrier coating with column form crystal structure ceramic layer Download PDF

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CN101078117A
CN101078117A CNA2007101182365A CN200710118236A CN101078117A CN 101078117 A CN101078117 A CN 101078117A CN A2007101182365 A CNA2007101182365 A CN A2007101182365A CN 200710118236 A CN200710118236 A CN 200710118236A CN 101078117 A CN101078117 A CN 101078117A
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ceramic layer
barrier coating
coating
crystal structure
lati
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CN100540739C (en
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郭洪波
谢小云
徐惠彬
宫声凯
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Beihang University
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Abstract

The invention discloses a thermal barrier coating preparation method with the columnar crystals coating to solve the problem of non-crystal coating and low anti-thermal in normal plasma spraying for the LaTi2Al9O19 ceramic material. It changes the distance and the technique data of the tack coat and ceramic powder channel in the normal plasma spraying process, so the thermal barrier coating of the LaTi2Al9O19 with the stable energetic and the columnar crystal structure. The thermal isolation temperature is 130deg.C-300deg.C and improves the strain limit and anti-thermal character, the hot circle life can reach above 1500 times and improves by 4 times.

Description

The method for preparing heat barrier coating that has column form crystal structure ceramic layer
Technical field
The present invention relates to a kind of method for preparing thermal barrier coating, more particularly say, be that conventional plasma spray coating process is improved, make the ceramic layer that adopts this method to make have columnar crystal structure, can improve strain tolerance limit, heat shock resistance, the work-ing life of thermal barrier coating.
Background technology
Along with aero gas turbine engine develops to high thrust-weight ratio direction, inlet temperature further improves before the turbine, therefore the heat-resisting ability of engine hot parts is also had higher requirement.The design temperature out of thrust-weight ratio 10 one-level aircraft engines has reached more than the 1850K, the design temperature out of the aircraft engine of thrust-weight ratio more than 12 will be above 2000K, cooling power according to engine, the temperature that arrives the alloy substrate surface will be at 1400 ℃ more than the K, and the maximum operation (service) temperature of existing turbine blade alloy monocrystalline material is 1150 ℃, obviously, the independent use of alloy material can not be satisfied design and operational requirement fully.Thermal Barrier Coating Technologies high temperature resistant, high heat-proof quality that employing has is the effective ways that reduce the alloy surface working temperature, improve the Sustainable development in alloy work-ing life.
Thermal barrier coating (Thermal Barrier Coatings TBCs) is high temperature resistant, the anticorrosive and low heat conductivity energy that utilizes stupalith superior, in the mode of coating with pottery and metallic matrix a kind of surface heat guard technology of compound mutually.The use of thermal barrier coating can significantly improve the working temperature of engine, prolongs the work-ing life of hot-end component, thereby improves efficiency of engine.After ceramic heat-barrier coating is coated on the Turbine Blade surface, can make cooling air delivery reduce 50%, specific fuel consumption reduces 1～2%, and leaf longevity improves several times.Only reduce one of oil consumption, for bigger company of civil aviaton an of family, annual with regard to cost-saved more than 1,000 ten thousand dollars.Investigation shows that the application of thermal barrier coating makes the use temperature of gas turbine parts increase substantially, and its application has been equivalent to since 30 years in the past the summation in alloy designs, manufacturing process and cooling technology development result.
At present using maximum thermal barrier coating ceramic materials in the world is 7-8wt%Y 2O 3-ZrO 2(YSZ), YSZ is acknowledged as a kind of thermal barrier coating ceramic material of standard, and it has higher thermal expansivity, lower thermal conductivity and good thermal-shock resistance.But the life-time service temperature of YSZ can not surpass 1200 ℃, and when use temperature is higher than 1200 ℃, YSZ will produce remarkable phase transformation and quicken sintering, finally cause the disbonding inefficacy.
The preparation method of thermal barrier coating mainly contains two kinds of electro beam physics vapour deposition (EB-PVD) and plasma sprayings (Plasma spray).The tradition plasma spraying coating is a laminate structure, the heat-proof quality of coating is better than the electro beam physics vapour deposition coating, and the coating cost is low, but the plasma spraying coating bonding force is poor, the thermal shock resistance of coating is starkly lower than the electro beam physics vapour deposition thermal barrier coating, therefore the plasma spraying thermal barrier coating only limits to the engine stationary parts at present, as combustion chamber inwall and aditus laryngis etc.
LaTi 2Al 9O 19Stupalith has high temperature resistant (steady in a long-term more than 1400 ℃), low heat insulation (under the same test condition, effect of heat insulation is more than a times of YSZ) performance.Yet, LaTi 2Al 9O 19Fusing point be lower than 2000 ℃, adopt the LaTi of conventional plasma spray coating process preparation 2Al 9O 19Coating is a non-crystalline state, and coating is (more than 1000 ℃) crystallization under hot environment, causes volumetric expansion, causes disbonding to lose efficacy.At above problem, present patent application proposes a kind of employing plasma spray coating process, but adopts different powder feedings to prepare the LaTi of a kind of Thermodynamically stable, columnar crystal structure apart from scheme on its preparation technology 2Al 9O 19Thermal barrier coating, thus increased substantially the thermal shock resistance of thermal barrier coating and the work-ing life of coating.
Summary of the invention
The objective of the invention is to propose a kind of method for preparing heat barrier coating that has column form crystal structure ceramic layer, be to adopt under the conventional plasma spray coating process condition, change, thereby make the ceramic layer for preparing have electron beam column crystal structure by distance, processing parameter tack coat, ceramic layer powder feeding passage.Has column crystal LaTi 2Al 9O 19The heat insulation temperature of the thermal barrier coating of ceramic layer is 130 ℃～300 ℃.
The present invention is a kind of method for preparing heat barrier coating that has column form crystal structure ceramic layer, and the preparation of described thermal barrier coating at first is to adopt plasma spray coating process to prepare tack coat on matrix, adopts plasma spray coating process to prepare ceramic layer then; During the system tack coat, feeding channel 3 outlets have distance L 1 with substrate 1, and L1=120mm; The plasma spraying condition is spray gun 2 horizontal translational speed 200mm/s, operating voltage 30V, electric current 500A, the powder sending quantity 20g/min of feeding channel 3; During the potting enamel coating, feeding channel 3 outlets have distance L 2 with tack coat 4, and L2=50～90mm; Spray gun 2 spouts and feeding channel 3 outlets have apart from d, and d=10～50mm; The plasma spraying condition is spray gun 2 horizontal translational speed 300～500mm/s, operating voltage 30～50V, electric current 600～1000A, the powder sending quantity 20～50g/min of feeding channel 3.Adopting the inventive method to make the tack coat chemical ingredients is NiCoCrAlY, and making the ceramic layer chemical ingredients is LaTi 2Al 9O 19
Preparation method's of the present invention advantage is:
(1) by adjust between spray gun and the powder feeding passage apart from d, solved powder material (potting enamel coating selected materials) because the too high decomposition that causes of temperature, made ceramic layer in the plasma spraying moulding process, keep the material behaviors such as class magnetoplumbite structure, lower thermal conductivity, anti-agglutinatting property energy, thermal structure stability of original bulk;
(2) during deposited ceramic layer, the power of spray gun (operating voltage * working current) is generally 4/5ths of conventional spray power, makes that the flame temperature of spray gun ejection is low, has guaranteed that powder material its molecular structure in whole fusings does not decompose;
(3) when deposited ceramic layer, the matrix that contains tack coat is carried out the preheating certain temperature, the too fast formation amorphous coating of speed of cooling has improved the coating internal bond strength simultaneously when preventing powder material arrival tack coat, has promoted the growth of column crystal.
The column crystal LaTi that adopts the inventive method to make 2Al 9O 19The advantage of the thermal barrier coating of ceramic layer is:
What (1) make has a column crystal LaTi 2Al 9O 19The thermodynamically stable phase of ceramic layer (referring to shown in Figure 3), and when adopting traditional plasma spraying method to prepare the low melting point ceramic coating, form the non-crystalline state coating; Amorphous coating is crystallization (more than 1000 ℃) in use, and volumetric expansion takes place, thereby causes coating to lose efficacy;
(2) partially stabilized with existing yttrium oxide zirconium white (YSZ) is compared single-phase LaTi 2Al 9O 19Coating has excellent anti-agglutinatting property energy, long-term structure of high temperature and thermo-chemical stability (referring to shown in Figure 4);
(3) columnar crystal structure that has of ceramic layer has improved the strain tolerance limit and the thermal shock resistance of coating, and the thermal cycle life of coating surpasses 1500 times, has improved more than 4 times than the coating of conventional plasma spraying preparation;
(4) has columnar crystal structure LaTi 2Al 9O 19The heat insulation temperature of the thermal barrier coating of ceramic layer is 130 ℃～300 ℃, and its effect of heat insulation than the thermal barrier coating of the ceramic layer of YSZ has improved more than 1 times.
Description of drawings
Fig. 1 is the device layout synoptic diagram when adopting plasma spray coating process system tack coat of the present invention.
Fig. 2 is the device layout synoptic diagram when adopting plasma spray coating process potting enamel coating of the present invention.
Fig. 3 is the LaTi that adopts the inventive method to make 2Al 9O 19The DSC figure of ceramic layer material.
Fig. 4 be adopt that the inventive method makes have a columnar crystal structure LaTi 2Al 9O 19The XRD figure of the thermal barrier coating of ceramic layer after 800 thermal cyclings.
Fig. 5 be adopt that the inventive method makes have a columnar crystal structure LaTi 2Al 9O 19The electron microscope photo scanning of ceramic layer.
Fig. 6 is the LaTi with columnar crystal structure 2Al 9O 19Thermal barrier coating and traditional plasma spraying LaTi 2Al 9O 19The comparison of thermal barrier coating thermal cycle life.
Fig. 7 is the LaTi with columnar crystal structure 2Al 9O 19The comparison of thermal barrier coating and traditional YSZ thermal barrier coating effect of heat insulation.
Embodiment
Adopt plasma spray coating process of the present invention to prepare LaTi 2Al 9O 19Ceramic layer, the LaTi after the feasible spraying 2Al 9O 19The class magnetoplumbite structure that keeps original block materials, lower thermal conductivity, excellent anti-agglutinatting property energy have been kept, material behaviors such as thermal structure stability, the ceramic layer of spraying preparation simultaneously is a columnar crystal structure, coating's adhesion is strong, strain tolerance limit height, thermal cycle life is long, has solved the traditional hot spraying coating process and can not make LaTi 2Al 9O 19Be coated with stratification, and technical problem such as traditional plasma spraying coating thermal shock resistance difference.
A kind of method for preparing heat barrier coating that has column form crystal structure ceramic layer of the present invention, the preparation of described thermal barrier coating at first are to adopt plasma spray coating process to prepare tack coat on matrix, adopt plasma spray coating process to prepare ceramic layer then.The inventive method and conventional plasma spraying difference are:
During the system tack coat, feeding channel 3 outlets have distance L 1 with substrate 1, and L1=120mm; The plasma spraying condition is spray gun 2 horizontal translational speed 200mm/s, operating voltage 30V, electric current 500A, the powder sending quantity 20g/min of feeding channel 3;
During the potting enamel coating, feeding channel 3 outlets have distance L 2 with tack coat 4, and L2=50～90mm; Spray gun 2 flame jets and feeding channel 3 outlets have apart from d, and d=10～50mm; The plasma spraying condition is spray gun 2 horizontal translational speed 300～500mm/s, operating voltage 30～50V, electric current 600～1000A, the powder sending quantity 20～50g/min of feeding channel 3.
In order to be without loss of generality, the present invention will adopt the plasma spray after improving to be coated in the tack coat 4 of preparation NiCoCrAlY on the nickel base superalloy matrix 1 and the LaTi of columnar crystal structure 2Al 9O 19Ceramic layer, concrete processing step has:
The first step: matrix is prepared and pre-treatment
(1) selecting the Ni based high-temperature alloy of trade mark K3 for use is body material; (2) adopt No. 150, No. 300, No. 400, No. 800 sand paper in turn with the matrix polishing then, make surface roughness Ra＜0.8; (3) after the matrix after will polishing is then put into 99.7% dehydrated alcohol and 99.5% acetone and carried out ultrasonic cleaning 20min, dry naturally and obtain roughness 0.8 matrix; (4) utilize sandblast machine to carry out sandblasting roughness 0.8 matrix then, make surface roughness Ra reach 15;
Second step: preparation tack coat
Referring to shown in Figure 1, bonding layer material is NiCoCrAlY among the present invention, and the weight percent of component is Ni:34～55%, Co:18～22%, Cr:19～25%, Al:7.5～10%, Y:0.5～1.0%.
Plasma thermal sprayed system tack coat processing parameter:
The powder feeding rate 20g/min
Powder feeding gas flow (Ar/H 2) (42～47)/(9～11)
Electric current 500A
Voltage 30V
Spraying tack coat distance L 1 120mm
The horizontal rate travel of plasma gun 200mm/s
Thickness of adhibited layer 150μm
The 3rd step: preparation LaTi 2Al 9O 19Ceramic layer
The LaTi that the present invention relates to 2Al 9O 19Heat-barrier coating ceramic layer is the material of a kind magnetoplumbite structure, and the chemical constitution of its compound is LaTi 2Al 9O 19This material is big cell configuration, and about 1800 ℃ of fusing point does not have phase transformation (referring to shown in Figure 3) between the room temperature to 1400 ℃.
In preparation process, because LaTi 2Al 9O 19Fusing point be about 1800 ℃, be lower than the fusing point of YSZ, therefore can not adopt conventional plasma spray coating process.At first should reduce the power of spray gun 2, be generally about 4/5ths of conventional spray power, can be so that material all melts and keeps its structure and do not decompose.Secondly, the flame jet that (referring to shown in Figure 2) increases spray gun 2 and feeding channel 3 export apart from d, reduce the outlet of feeding channel 3 and the distance L 2 of substrate, prevent to cause LaTi in the spraying process because of flame temperature is too high 2Al 9O 19Decompose.Improving the preheating temperature of substrate 1 simultaneously in spraying process, is in order to prevent that formation non-crystalline state coating has improved the bonding force of coating inside to material on the other hand in that substrate 1 speed of cooling is too high, promotes the growth of column crystal on the one hand.
Plasma thermal sprayed potting enamel coating processing parameter:
The powder feeding rate 20～50g/min
Powder feeding gas flow (Ar/H 2) (42～47)/(9～11)
Electric current 600～1000A
Voltage
30～50V
Apart from d 10～50mm
Ceramic coated layer distance L 2 50～90mm
The basal plate preheating temperature 500～800℃
The horizontal rate travel of spray gun 300～500mm/s
Ceramic layer thickness 100～1000μm
Through the thermal barrier coating of above-mentioned prepared, (SEM, Hitachi S-3500N Japan) observe, and deposition attitude ceramic layer has the electronics columnar crystal structure, has significantly improved the strain tolerance limit and the thermal-shock resistance of coating to adopt scanning electron microscope.
Embodiment 1:
The required powder material of preparation ceramic layer:
(A) according to 1: 4: 9 commercially available La of proportioning weighing of mol ratio 2O 3Powder (99.99%, particle diameter 4 μ m grind rare earth new material company limited) 407.5 grams, TiO 2Powder 399.5 grams, Al 2O 3Powder (analytical pure, Peking blue is shooted a retrievable arrow chemical industry) 1147.05 gram adopts the wet ball-milling method to grind after 60 minutes, makes particle diameter less than 1 micron fine powder, and take out dry back in 110 ℃ loft drier, makes dried fine powder.
(B) fine powder that (A) step is made is put into High Temperature Furnaces Heating Apparatus, and the heat-up rate of setting stove is 4 ℃ of min, and the conditioned reaction temperature is 1500 ℃, react after 24 hours furnace cooling to room temperature, below the taking-up ball milling to 5 micron.
(C) according to powder: binding agent=1: 0.2 (mass ratio) preparation binding agent, the binding agent composition is that (main component is organic carbohydrate to peach gum, fusing point, boiling point are lower, temperature can be volatilized more than 200 ℃, the ceramics sample composition that is applied to plasma spraying there is not influence), add small amount of deionized water in the binding agent and carry out heating in water bath, binding agent is fully dissolved, pour in the powdered sample and mix.Add the 0.5L deionized water by every 1kg mixture then, be made into slip, the purpose that adds a certain amount of deionized water is the control pulp density, and ball milling stirs the back and sieves with 100 mesh sieve, obtains the required slip of centrifugal drying.Sieve after the atomizing granulation and obtain the required powder of particle diameter 50～100 μ m plasma sprayings.
The first step: matrix is prepared and pre-treatment
The Ni based high-temperature alloy of selecting trade mark K3 for use is a body material, polishes smooth in turn with No. 150, No. 300, No. 400, No. 800 sand paper, makes its surface roughness Ra＜0.8.Put into 99.7% dehydrated alcohol then and 99.5% acetone carries out ultrasonic cleaning 20min.With sandblast machine matrix is carried out sandblasting before the spraying, matrix surface roughness Ra is reached about 15.
Second step: plasma spray coats tack coat
Get the prepared NiCoCrAlY 500g of Shenyang metal, setting spray distance L1 is 120mm, and the horizontal translational speed of spray gun is 200mm/s, plasma spraying voltage is 30V, and electric current is 500A, and powder sending quantity is 20g/min, the deposition tack coat is 150 μ m, depositing time 25min.
The 3rd step: plasma spray coats LaTi 2Al 9O 19Ceramic layer
The LaTi of granulation learnt from else's experience 2Al 9O 19Powder 800g, setting spray distance d is 30mm, distance L 2 is 80mm, and the translational speed of spray gun is 400mm/s, and plasma spraying voltage is 40V, electric current is 600A, powder sending quantity is 35g/min, and the substrate preheating temperature is 700 ℃, and the ceramic deposition layer thickness is 300 μ m, depositing time 25min, both the thermal barrier coating preparation finished.
Through the thermal barrier coating of above-mentioned prepared, the cross section pattern of deposition attitude ceramic layer as shown in Figure 5, the columnar crystal structure in the ceramic layer can significantly improve the strain tolerance limit of coating.The coating that deposition is good heats 5min under 1300 ℃ of (substrate temperature is 950 ℃～1050 ℃) temperature, 2min pressurized air is cooled under the condition of room temperature and carries out thermal cycling then, the coating cycle life that column form crystal structure ceramic layer is arranged is 1511 times, and the coating thermal cycle life that adopts the preparation of traditional plasma spraying is less than 200 times, as shown in Figure 6.
Its effect of heat insulation is calculated, and the effect of heat insulation of traditional YSZ coating is about 100 ℃, and has the single-phase LaTi of columnar crystal structure 2Al 9O 19The thermal barrier coating effect of heat insulation of ceramic layer reaches 186 ℃, has improved 50% above (see figure 7) than existing YSZ thermal barrier coating effect of heat insulation.
Embodiment 2:
Example 2 is identical with example 1 at preparation powder material, the first step, the second step process condition, is not all third step.
The 3rd step: plasma spray coats LaTi 2Al 9O 19Ceramic layer
The LaTix of granulation learnt from else's experience 2Al 9O 19Powder 1100g, setting spray distance d is 30mm, distance L 2 is 70mm, and the translational speed of spray gun is 500mm/s, and plasma spraying voltage is 30V, electric current is 800A, powder sending quantity is 50g/min, and the substrate preheating temperature is 800 ℃, and the ceramic deposition layer thickness is 1000 μ m, depositing time 20min, both the thermal barrier coating preparation finished.
Through the thermal barrier coating of above-mentioned prepared, deposition attitude ceramic layer has the electronics columnar crystal structure.The coating that deposition is good heats 5min under 1300K ℃ of (substrate temperature is 950 ℃～1050 ℃) temperature, 2min pressurized air is cooled under the condition of room temperature and carries out thermal cycling then, the coating cycle life that column form crystal structure ceramic layer is arranged is 713 times, and the coating thermal cycle life that adopts the preparation of traditional plasma spraying is less than 100 times.
Its effect of heat insulation is calculated, and the effect of heat insulation of traditional YSZ ceramic layer thermal barrier coating of same thickness is about 150 ℃, and has the single-phase LaTi of columnar crystal structure 2Al 9O 19The thermal barrier coating effect of heat insulation of ceramic layer is greater than 280 ℃, has improved 85% approximately than YSZ thermal barrier coating effect of heat insulation.
Adopt the processing step identical, the LaTi of different components with embodiment 1 2Al 9O 19Effect of heat insulation and thermal cycle life under powder, the different technology conditions see the following form:
LaTi 2Al 9O 19Powder (g) 300 2200 2700 1300
Processing condition Powder feeding rate (g/min) 20 30 50 45
Electric current (A) 600 700 1000 800
Voltage (V) 30 35 50 45
Apart from d (mm) 10 15 30 20
Distance L 2 (mm) 50 70 90 80
The basal plate preheating temperature (℃) 500 600 800 750
The horizontal rate travel of spray gun (mm/s) 300 400 500 450
Deposit thickness (μ m) 100 800 1000 500
The heat insulation temperature of thermal barrier coating (℃) 134 246 282 217
The thermal cycle life of thermal barrier coating (inferior) 1012 788 713 874

Claims (5)

1, a kind of method for preparing heat barrier coating that has column form crystal structure ceramic layer, the preparation of described thermal barrier coating at first are to adopt plasma spray coating process to prepare tack coat on matrix, adopt plasma spray coating process to prepare ceramic layer then, it is characterized in that:
During the system tack coat, feeding channel (3) outlet has distance L 1 with substrate (1), and L1=120mm; The plasma spraying condition is laterally translational speed 200mm/s of spray gun (2), operating voltage 30V, electric current 500A, the powder sending quantity 20g/min of feeding channel (3);
During the potting enamel coating, feeding channel (3) outlet has distance L 2 with tack coat (4), and L2=50～90mm; Spray gun (2) spout and feeding channel (3) outlet have apart from d, and d=10～50mm; The plasma spraying condition is laterally translational speed 300～500mm/s of spray gun (2), operating voltage 30～50V, electric current 600～1000A, the powder sending quantity 20～50g/min of feeding channel (3).
2, the method for preparing heat barrier coating that has column form crystal structure ceramic layer according to claim 1 is characterized in that: making the tack coat chemical ingredients is NiCoCrAlY, and making the ceramic layer chemical ingredients is LaTi 2Al 9O 19
3, according to claim 1, the 2 described method for preparing heat barrier coating that have column form crystal structure ceramic layer, it is characterized in that: ceramic layer LaTi 2Al 9O 19Has columnar crystal structure.
4, according to claim 1, the 2 described method for preparing heat barrier coating that have column form crystal structure ceramic layer, it is characterized in that: have LaTi 2Al 9O 19The heat insulation temperature of the thermal barrier coating of ceramic layer is 130 ℃～300 ℃.
5, according to claim 1, the 2 described method for preparing heat barrier coating that have column form crystal structure ceramic layer, it is characterized in that: have LaTi 2Al 9O 19The thermal cycle life of the thermal barrier coating of ceramic layer 700～1500 times.
CNB2007101182365A 2007-07-03 2007-07-03 The method for preparing heat barrier coating that has column form crystal structure ceramic layer Expired - Fee Related CN100540739C (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101234903B (en) * 2008-03-05 2010-06-02 北京航空航天大学 Method for preparing lanthanum titanium aluminate ceramic material by sol-gel method
CN102039416A (en) * 2009-10-10 2011-05-04 湖北嘉裕管业股份有限公司 Method for coating tungsten/nickel/molybdenum/iron/boron carbide multi-element alloy on tool gear for mine road machinery
CN102212786A (en) * 2011-05-27 2011-10-12 中国航空工业集团公司北京航空制造工程研究所 Method for preparing thermal barrier coating
CN102242333A (en) * 2011-06-23 2011-11-16 江苏宇天港玻新材料有限公司 Process for manufacturing coated glass by utilizing rotary ceramic target
CN102963061A (en) * 2012-12-03 2013-03-13 上海理工大学 Nano columnar crystal thermal barrier coating layer and preparation method thereof
CN106086765A (en) * 2016-07-25 2016-11-09 北京航空航天大学 A kind of anti-CMAS corrosion micron and nanometer composite structure thermal barrier coating and preparation method thereof
CN108435525A (en) * 2018-03-08 2018-08-24 福州大学 The method that separation adhesive layer, ceramic layer powder in giving up powder are sprayed from thermal barrier coating
CN110612360A (en) * 2017-02-07 2019-12-24 欧瑞康美科股份公司，沃伦 Abradable coating

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101234903B (en) * 2008-03-05 2010-06-02 北京航空航天大学 Method for preparing lanthanum titanium aluminate ceramic material by sol-gel method
CN102039416A (en) * 2009-10-10 2011-05-04 湖北嘉裕管业股份有限公司 Method for coating tungsten/nickel/molybdenum/iron/boron carbide multi-element alloy on tool gear for mine road machinery
CN102212786A (en) * 2011-05-27 2011-10-12 中国航空工业集团公司北京航空制造工程研究所 Method for preparing thermal barrier coating
CN102212786B (en) * 2011-05-27 2013-04-10 中国航空工业集团公司北京航空制造工程研究所 Method for preparing thermal barrier coating
CN102242333A (en) * 2011-06-23 2011-11-16 江苏宇天港玻新材料有限公司 Process for manufacturing coated glass by utilizing rotary ceramic target
CN102963061A (en) * 2012-12-03 2013-03-13 上海理工大学 Nano columnar crystal thermal barrier coating layer and preparation method thereof
CN106086765A (en) * 2016-07-25 2016-11-09 北京航空航天大学 A kind of anti-CMAS corrosion micron and nanometer composite structure thermal barrier coating and preparation method thereof
CN110612360A (en) * 2017-02-07 2019-12-24 欧瑞康美科股份公司，沃伦 Abradable coating
CN108435525A (en) * 2018-03-08 2018-08-24 福州大学 The method that separation adhesive layer, ceramic layer powder in giving up powder are sprayed from thermal barrier coating

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