CN101234892A - Method for preparing lanthanum titanium aluminate ceramic material by coprecipitation method - Google Patents

Method for preparing lanthanum titanium aluminate ceramic material by coprecipitation method Download PDF

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CN101234892A
CN101234892A CNA2008101013747A CN200810101374A CN101234892A CN 101234892 A CN101234892 A CN 101234892A CN A2008101013747 A CNA2008101013747 A CN A2008101013747A CN 200810101374 A CN200810101374 A CN 200810101374A CN 101234892 A CN101234892 A CN 101234892A
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reaction solution
lanthanum
titanium aluminate
make
lanthanum titanium
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CN100586897C (en
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徐惠彬
谢小云
郭洪波
宫声凯
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Beihang University
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Abstract

The invention discloses a method for preparing lanthanum-aluminum acid titanium ceramic material by adopting the co-precipitation method. The lanthanum-aluminum acid titanium material used as thermal ceramic coating is prepared by selecting the aluminium nitrate, lanthanum nitrate, and tetra-n-butyl titanate as raw materials. With the co-precipitation method, the method for preparing lanthanum-aluminum acid titanium ceramic material can prepare a precipitation product evenly mixed at the molecular level, thereby leading to easier and more complete implementation of the subsequent agglomeration reaction, and obtaining LaTi2 Al9 O19 ceramic powder with high purity, even granularity, and good fluidity.

Description

A kind of method that adopts coprecipitation method to prepare lanthanum titanium aluminate ceramic material
Technical field
The present invention relates to a kind of thermal barrier coating ceramic layer material that is used for making, more particularly say, be meant a kind of lanthanum titanium aluminate ceramic material that adopts the coprecipitation method preparation, this lanthanum titanium aluminate ceramic material use temperature can reach 1500 ℃.
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 1550 ℃, the design temperature out of the aircraft engine of thrust-weight ratio more than 12 will be above 1750 ℃, cooling power according to engine, the temperature that arrives the alloy substrate surface will be more than 1200 ℃, 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(Y-PSZ), Y-PSZ 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 Y-PSZ can not surpass 1200 ℃, and when use temperature is higher than 1200 ℃, Y-PSZ will produce remarkable phase transformation and quicken sintering, finally cause the disbonding inefficacy.
The employing high temperature solid state reaction sintering that also has at present synthesizes lanthanum titanium aluminate (LaTi 2Al 9O 19), be about to La 2O 3Powder, TiO 2Powder and Al 2O 3Powder is prepared burden in molar ratio, utilizes mixing of three-dimensional blender machine or wet ball grinding to mix, and obtains with LaTi by long-time high temperature sintering then 2Al 9O 19The block materials of Xiang Weizhu carries out ball mill crushing at last and obtains LaTi 2Al 9O 19Powder.The weak point of this method is to adopt three-dimensional blender machine oxidate powder powder stock to can not get thorough mixing, has the segregation of regional area material composition, contains impurity in the sintering block materials that obtains; And adopt wet ball grinding to be blended in subsequently the slip drying course because demixing phenomenon appears in oxide raw material density difference, and caused in the later stage sintering process reaction not carry out fully fully equally, gained block materials purity is not high.In addition, the needed temperature of solid state reaction is very high, must reach 1500 ℃ and more than, and need long-time insulation.
Summary of the invention
The present invention proposes a kind of employing coprecipitation method and prepares lanthanum titanium aluminate ceramic material, adopt coprecipitation method to obtain the precipitated product that on molecular level, mixes, making that subsequently sintering reaction is easier carries out and carries out more fully, thereby the high purity of obtaining, homogeneous grain diameter, the LaTi of good fluidity 2Al 9O 19Ceramic powder.Select for use aluminum nitrate, lanthanum nitrate, tetrabutyl titanate as raw material, prepare lanthanum titanium aluminate material as thermal barrier coating.
The present invention proposes a kind of method that adopts coprecipitation method to prepare lanthanum titanium aluminate ceramic material, and its preparation technology includes the following step:
The first step: make first reaction solution
With lanthanum nitrate La (NO 3) 3-2H 2O, aluminum nitrate Al (NO 3) 3-9H 2O and alcohol are put into reaction vessel, under 22～30 ℃ of temperature condition, make first reaction solution behind magnetic agitation 10～60min;
Consumption: add the lanthanum nitrate of 1.5～6.5g and the aluminum nitrate of 14～57g in every 100ml alcohol;
Second step: make second reaction solution
In first reaction solution, add tetrabutyl titanate Ti (OC 4H 9) 4, under 22～30 ℃ of temperature condition, make second reaction solution behind magnetic agitation 30～60min;
Consumption: to add the tetrabutyl titanate of 2.5～11.5ml in the every 100ml alcohol in the first step;
The 3rd step: make the 3rd reaction solution
In second reaction solution, add ammoniacal liquor and make the 3rd reaction solution;
Consumption: the ammoniacal liquor that adds 10～50ml in every 100ml second reaction solution;
The 4th step: vacuum filtration makes white oxyhydroxide
The 3rd reaction solution that third step makes is put into vacuum vessel, suction to 1～5 * 10 -2Pa makes white oxyhydroxide;
The 5th step: high temperature sintering
The white oxyhydroxide that the 4th step is made is put into the alumina crucible of resistance furnace, insulation 1～2h during with 3～5 ℃/min to 250 of temperature rise rate～400 ℃ cools to room temperature (25 ℃) with the furnace behind insulation 2～12h during then with 5～10 ℃/min to 1150 of temperature rise rate～1500 ℃ and makes the lanthanum titanium aluminate ceramic bulk material;
The 6th step: ball milling system lanthanum titanium aluminate ceramics powder material
The lanthanum titanium aluminate ceramic bulk material that the 5th step is made adopts ball milling method to make the lanthanum titanium aluminate LaTi that particle diameter is 0.5～1.0 μ m 2Al 9O 19The ceramics powder material.
Lanthanum titanium aluminate (LaTi 2Al 9O 19) be a kind of excellent high-temperature stupalith, its heat physical properties is similar to Y-PSZ, has lower thermal conductivity than Y-PSZ.Especially it should be noted that this materials theory density is than Y-PSZ (5.89g/cm 3) low about 30%, have good crystal structural stability and thermo-chemical stability, just do not have the variation of phase structure again in case generate the LTA structure, and at high temperature have excellent anti-agglutinatting property energy.LaTi 2Al 9O 19Have good thermostability, use temperature can reach 1500 ℃.
Preparation method's of the present invention advantage is:
(1) adopt coprecipitation method can make the reaction raw materials thorough mixing even, thus the precipitated product that obtains on molecular level, mixing;
(2) solid state reaction of comparing in the past is synthetic, adopts the sintering temperature and the soaking time in coprecipitation method later stage to reduce greatly and shorten, the easier generation of sintering reaction and carry out more fully;
(3) react the LaTi that obtains 2Al 9O 19Powder purity height, homogeneous grain diameter, good flowing properties.
Description of drawings
Fig. 1 is the schematic diagram that the present invention reflects container.
Fig. 2 is the LaTi that adopts coprecipitation method preparation of the present invention 2Al 9O 19The X ray diffracting spectrum of ceramic powder.
Fig. 3 is the LaTi that adopts coprecipitation method preparation of the present invention 2Al 9O 19The DSC figure of ceramic powder.
Embodiment
The present invention proposes a kind of employing coprecipitation method and prepares lanthanum titanium aluminate ceramic material, and its preparation technology includes the following step:
The first step: make first reaction solution
With lanthanum nitrate La (NO 3) 3-2H 2O, aluminum nitrate Al (NO 3) 3-9H 2O and alcohol are put into reaction vessel, under 22～30 ℃ of temperature condition, make first reaction solution behind magnetic agitation 10～60min;
Consumption: add the lanthanum nitrate of 1.5～6.5g and the aluminum nitrate of 14～57g in every 100ml alcohol;
Second step: make second reaction solution
In first reaction solution, add tetrabutyl titanate Ti (OC 4H 9) 4, under 22～30 ℃ of temperature condition, make second reaction solution behind magnetic agitation 30～60min;
Consumption: to add the tetrabutyl titanate of 2.5～11.5ml in the every 100ml alcohol in the first step;
The 3rd step: make the 3rd reaction solution
In second reaction solution, add ammoniacal liquor and make the 3rd reaction solution;
Consumption: the ammoniacal liquor that adds 10～50ml in every 100ml second reaction solution;
The 4th step: vacuum filtration makes white oxyhydroxide
The 3rd reaction solution that third step makes is put into vacuum vessel, suction to 1～5 * 10 -2Pa makes white oxyhydroxide;
The 5th step: high temperature sintering
The white oxyhydroxide that the 4th step is made is put into the alumina crucible of resistance furnace, insulation 1～2h during with 3～5 ℃/min to 250 of temperature rise rate～400 ℃ cools to room temperature (25 ℃) with the furnace behind insulation 2～12h during then with 5～10 ℃/min to 1150 of temperature rise rate～1500 ℃ and makes the lanthanum titanium aluminate ceramic bulk material;
The 6th step: ball milling system lanthanum titanium aluminate ceramics powder material
The lanthanum titanium aluminate ceramic bulk material that the 5th step is made adopts ball milling method to make the lanthanum titanium aluminate LaTi that particle diameter is 0.5～1.0 μ m 2Al 9O 19The ceramics powder material.
With the above-mentioned lanthanum titanium aluminate LaTi that makes 2Al 9O 19The ceramics powder material adopts X-ray diffractometer analysis bank separation structure.The density of utilizing two bottle hydrometer methoies to record powder is 4.3g/cm 3, also lanthanum titanium aluminate ceramics powder material has been carried out differential scanning calorimetric analysis simultaneously, its use temperature can reach 1500 ℃.
Embodiment 1:
The first step: make first reaction solution
Lanthanum nitrate La (NO with 3.62g 3) 3-2H 2Aluminum nitrate Al (the NO of O, 33.76g 3) 3-9H 2O and 200ml alcohol are put into reaction vessel 1 (as shown in Figure 1), under 25 ℃ of temperature condition, make first reaction solution after employing magnetic stirring apparatus 2 stirs 15min;
Second step: make second reaction solution
Tetrabutyl titanate Ti (the OC that in first reaction solution, adds 6.83ml 4H 9) 4, under 25 ℃ of temperature condition, make second reaction solution after employing magnetic stirring apparatus 2 stirs 30min;
The 3rd step: make the 3rd reaction solution
The ammoniacal liquor that adds 25ml in second reaction solution makes the 3rd reaction solution;
Described the 3rd reaction solution is the oxyhydroxide that contains aluminium, titanium, lanthanum, and the mixture of alcohol and ammoniacal liquor;
The 4th step: vacuum filtration makes white oxyhydroxide
The 3rd reaction solution that third step makes is put into vacuum vessel (VP30, LabTech Ltd), suction to 2 * 10 -2Pa, the topper of getting vacuum vessel, promptly white oxyhydroxide;
The 5th step: high temperature sintering
The white oxyhydroxide that the 4th step makes is put into resistance furnace (SX2-12-16, go up marine grand electric furnace factory) alumina crucible in, insulation 2h during with 3 ℃ of temperature rise rates/min to 250 ℃ cools to room temperature (25 ℃) with the furnace behind the insulation 10h during then with 5 ℃ of temperature rise rates/min to 1150 ℃ and makes lanthanum titanium aluminate LaTi 2Al 9O 19Ceramic bulk material;
The 6th step: ball milling system lanthanum titanium aluminate ceramics powder material
The lanthanum titanium aluminate LaTi that the 5th step is made 2Al 9O 19Ceramic bulk material adopts ball milling (KQM-S, Chengyang Jin Hong Meccanica Generale S. R. L) mode to make the lanthanum titanium aluminate ceramics powder material that particle diameter is 0.5～1.0 μ m.
The above-mentioned lanthanum titanium aluminate ceramics powder material that makes is adopted X-ray diffractometer (X ' Pert Pro MPD, Holland) analysis bank separation structure, and the chemical ingredients of lanthanum titanium aluminate is LaTi 2Al 9O 19As shown in Figure 2, show that the powder that adopts codeposition prepared of the present invention is LaTi 2Al 9O 19, and composition is single.The density of utilizing two bottle hydrometer methoies to record powder is 4.3g/cm 3Adopt differential scanning calorimetric analysis lanthanum titanium aluminate ceramics powder material, as shown in Figure 3, show that the use temperature of lanthanum titanium aluminate ceramics powder material can reach 1500 ℃, good thermal stability can be used for the thermal barrier coating preparation in later stage.
Embodiment 2:
The first step: make first reaction solution
Lanthanum nitrate La (NO with 5.3g 3) 3-2H 2Aluminum nitrate Al (the NO of O, 49.40g 3) 3-9H 2The alcohol of O and 150ml is put into reaction vessel 1 (as shown in Figure 1), under 22 ℃ of temperature condition, makes first reaction solution after employing magnetic stirring apparatus 2 stirs 30min;
Second step: make second reaction solution
Tetrabutyl titanate Ti (the OC that in first reaction solution, adds 10ml 4H 9) 4, under 25 ℃ of temperature condition, make second reaction solution after employing magnetic stirring apparatus 2 stirs 30min;
The 3rd step: make the 3rd reaction solution
The ammoniacal liquor that adds 45ml in second reaction solution makes the 3rd reaction solution;
Described the 3rd reaction solution is the oxyhydroxide that contains aluminium, titanium, lanthanum, and the mixture of alcohol and ammoniacal liquor;
The 4th step: vacuum filtration makes white oxyhydroxide
The 3rd reaction solution that third step makes is put into vacuum vessel, suction to 5 * 10 -2Pa, the topper of getting vacuum vessel, promptly white oxyhydroxide;
The 5th step: high temperature sintering
The white oxyhydroxide that the 4th step makes is put into resistance furnace (SX2-12-16, go up marine grand electric furnace factory) alumina crucible in, insulation 1h during with 5 ℃ of temperature rise rates/min to 300 ℃ cools to room temperature (25 ℃) with the furnace behind the insulation 2h during then with 10 ℃ of temperature rise rates/min to 1300 ℃ and makes lanthanum titanium aluminate LaTi 2Al 9O 19Ceramic bulk material;
The 6th step: ball milling system lanthanum titanium aluminate ceramics powder material
The lanthanum titanium aluminate LaTi that the 5th step is made 2Al 9O 19Ceramic bulk material adopts ball milling (KQM-S, Xianyang Jin Hong Meccanica Generale S. R. L) mode to make the lanthanum titanium aluminate ceramics powder material that particle diameter is 0.5～1.0 μ m.
The above-mentioned lanthanum titanium aluminate ceramics powder material that makes is adopted X-ray diffractometer analysis bank separation structure, show that the powder that adopts codeposition prepared of the present invention is LaTi 2Al 9O 19, and composition is single.The density of utilizing two bottle hydrometer methoies to record powder is 4.3g/cm 3Adopt differential scanning calorimetric analysis lanthanum titanium aluminate ceramics powder material, show that the use temperature of lanthanum titanium aluminate ceramics powder material can reach 1500 ℃, good thermal stability can be used for the thermal barrier coating preparation in later stage.
Embodiment 3:
The first step: make first reaction solution
Lanthanum nitrate La (NO with 1.5g 3) 3-2H 2Aluminum nitrate Al (the NO of O, 14g 3) 3-9H 2O and 100ml alcohol are put into reaction vessel 1 (as shown in Figure 1), under 30 ℃ of temperature condition, make first reaction solution after employing magnetic stirring apparatus 2 stirs 10min;
Second step: make second reaction solution
Tetrabutyl titanate Ti (the OC that in first reaction solution, adds 2.83ml 4H 9) 4, under 30 ℃ of temperature condition, make second reaction solution after employing magnetic stirring apparatus 2 stirs 30min;
The 3rd step: make the 3rd reaction solution
The ammoniacal liquor that adds 10ml in second reaction solution makes the 3rd reaction solution;
Described the 3rd reaction solution is the oxyhydroxide that contains aluminium, titanium, lanthanum, and the mixture of alcohol and ammoniacal liquor;
The 4th step: vacuum filtration makes white oxyhydroxide
The 3rd reaction solution that third step makes is put into vacuum vessel (VP30, LabTech Ltd), suction to 1 * 10 -2Pa, the topper of getting vacuum vessel, promptly white oxyhydroxide;
The 5th step: high temperature sintering
The white oxyhydroxide that the 4th step makes is put into resistance furnace (SX2-12-16, go up marine grand electric furnace factory) alumina crucible in, insulation 1h during with 3 ℃ of temperature rise rates/min to 250 ℃ cools to room temperature (25 ℃) with the furnace behind the insulation 2h during then with 5 ℃ of temperature rise rates/min to 1150 ℃ and makes lanthanum titanium aluminate LaTi 2Al 9O 19Ceramic bulk material;
The 6th step: ball milling system lanthanum titanium aluminate ceramics powder material
The lanthanum titanium aluminate LaTi that the 5th step is made 2Al 9O 19Ceramic bulk material adopts ball milling (KQM-S, Chengyang Jin Hong Meccanica Generale S. R. L) mode to make the lanthanum titanium aluminate ceramics powder material that particle diameter is 0.5～1.0 μ m.
The above-mentioned lanthanum titanium aluminate ceramics powder material that makes is adopted X-ray diffractometer analysis bank separation structure, show that the powder that adopts codeposition prepared of the present invention is LaTi 2Al 9O 19The density of utilizing two bottle hydrometer methoies to record powder is 4.3g/cm 3Adopt differential scanning calorimetric analysis lanthanum titanium aluminate ceramics powder material, show that the use temperature of lanthanum titanium aluminate ceramics powder material can reach 1500 ℃.
Embodiment 4:
The first step: make first reaction solution
Lanthanum nitrate La (NO with 6.5g 3) 3-2H 2Aluminum nitrate Al (the NO of O, 60.62g 3) 3-9H 2O and 100ml alcohol are put into reaction vessel 1 (as shown in Figure 1), under 25 ℃ of temperature condition, make first reaction solution after employing magnetic stirring apparatus 2 stirs 35min;
Second step: make second reaction solution
Tetrabutyl titanate Ti (the OC that in first reaction solution, adds 12.26ml 4H 9) 4, under 25 ℃ of temperature condition, make second reaction solution after employing magnetic stirring apparatus 2 stirs 60min;
The 3rd step: make the 3rd reaction solution
The ammoniacal liquor that adds 50ml in second reaction solution makes the 3rd reaction solution;
Described the 3rd reaction solution is the oxyhydroxide that contains aluminium, titanium, lanthanum, and the mixture of alcohol and ammoniacal liquor;
The 4th step: vacuum filtration makes white oxyhydroxide
The 3rd reaction solution that third step makes is put into vacuum vessel (VP30, LabTech Ltd), suction to 2 * 10 -2Pa, the topper of getting vacuum vessel, promptly white oxyhydroxide;
The 5th step: high temperature sintering
The white oxyhydroxide that the 4th step makes is put into resistance furnace (SX2-12-16, go up marine grand electric furnace factory) alumina crucible in, insulation 2h during with 5 ℃ of temperature rise rates/min to 250 ℃ cools to room temperature (25 ℃) with the furnace behind the insulation 12h during then with 10 ℃ of temperature rise rates/min to 1500 ℃ and makes lanthanum titanium aluminate LaTi 2Al 9O 19Ceramic bulk material;
The 6th step: ball milling system lanthanum titanium aluminate ceramics powder material
The lanthanum titanium aluminate LaTi that the 5th step is made 2Al 9O 19Ceramic bulk material adopts ball milling (KQM-S, Chengyang Jin Hong Meccanica Generale S. R. L) mode to make the lanthanum titanium aluminate ceramics powder material that particle diameter is 0.5～1.0 μ m.
The above-mentioned lanthanum titanium aluminate ceramics powder material that makes is adopted X-ray diffractometer analysis bank separation structure, show that the powder that adopts codeposition prepared of the present invention is LaTi 2Al 9O 19, and composition is single.The density of utilizing two bottle hydrometer methoies to record powder is 4.3g/cm 3Adopt differential scanning calorimetric analysis lanthanum titanium aluminate ceramics powder material, show that the use temperature of lanthanum titanium aluminate ceramics powder material can reach 1500 ℃.
In the present invention, reaction vessel can be the container that adopts the similar barrel-like structure that materials such as glass, pottery, metal, plastics are processed into.

Claims (3)

1, a kind of method that adopts coprecipitation method to prepare lanthanum titanium aluminate ceramic material is characterized in that following preparation steps is arranged:
The first step: make first reaction solution
With lanthanum nitrate La (NO 3) 3-2H 2O, aluminum nitrate Al (NO 3) 3-9H 2O and alcohol are put into reaction vessel, under 22～30 ℃ of temperature condition, make first reaction solution behind magnetic agitation 10～60min;
Consumption: add the lanthanum nitrate of 1.5～6.5g and the aluminum nitrate of 14～57g in every 100ml alcohol;
Second step: make second reaction solution
In first reaction solution, add tetrabutyl titanate Ti (OC 4H 9) 4, under 22～30 ℃ of temperature condition, make second reaction solution behind magnetic agitation 30～60min;
Consumption: to add the tetrabutyl titanate of 2.5～11.5ml in the every 100ml alcohol in the first step;
The 3rd step: make the 3rd reaction solution
In second reaction solution, add ammoniacal liquor and make the 3rd reaction solution;
Consumption: the ammoniacal liquor that adds 10～50ml in every 100ml second reaction solution;
The 4th step: vacuum filtration makes white oxyhydroxide
The 3rd reaction solution that third step makes is put into vacuum vessel, suction to 1～5 * 10 -2Pa makes white oxyhydroxide;
The 5th step: high temperature sintering
The white oxyhydroxide that the 4th step is made is put into the alumina crucible of resistance furnace, insulation 1～2h during with 3～5 ℃/min to 250 of temperature rise rate～400 ℃ cools to 25 ℃ with the furnace behind insulation 2～12h during then with 5～10 ℃/min to 1150 of temperature rise rate～1500 ℃ and makes the lanthanum titanium aluminate ceramic bulk material;
The 6th step: ball milling system lanthanum titanium aluminate ceramics powder material
The lanthanum titanium aluminate ceramic bulk material that the 5th step is made adopts ball milling method to make the lanthanum titanium aluminate ceramics powder material that particle diameter is 0.5～1.0 μ m.
2, employing coprecipitation method according to claim 1 prepares the method for lanthanum titanium aluminate ceramic material, it is characterized in that: the chemical ingredients of the lanthanum titanium aluminate ceramic layer powder material that makes is LaTi 2Al 9O 19
3, employing coprecipitation method according to claim 1 prepares the method for lanthanum titanium aluminate ceramic material, it is characterized in that: the density of described lanthanum titanium aluminate material is 4.3g/cm 3, use temperature can reach 1500 ℃.
CN200810101374A 2008-03-05 2008-03-05 Method for preparing lanthanum titanium aluminate ceramic material by coprecipitation method Expired - Fee Related CN100586897C (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904546A (en) * 2017-11-30 2018-04-13 中国航发沈阳黎明航空发动机有限责任公司 A kind of preparation method of aero-engine hot-end component thermal barrier coating
CN110845237A (en) * 2019-11-28 2020-02-28 太原理工大学 High-entropy ceramic powder, preparation method thereof and high-entropy ceramic block

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107904546A (en) * 2017-11-30 2018-04-13 中国航发沈阳黎明航空发动机有限责任公司 A kind of preparation method of aero-engine hot-end component thermal barrier coating
CN110845237A (en) * 2019-11-28 2020-02-28 太原理工大学 High-entropy ceramic powder, preparation method thereof and high-entropy ceramic block

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