CN104846322A - SrZrO3 nano-ceramic thermal barrier coating and preparation method thereof - Google Patents
SrZrO3 nano-ceramic thermal barrier coating and preparation method thereof Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 67
- 239000012720 thermal barrier coating Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 42
- 229910014031 strontium zirconium oxide Inorganic materials 0.000 title claims abstract description 32
- 238000004942 thermal barrier coating method Methods 0.000 title description 2
- 238000005507 spraying Methods 0.000 claims abstract description 55
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 238000000576 coating method Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000012266 salt solution Substances 0.000 claims abstract description 20
- 159000000008 strontium salts Chemical class 0.000 claims abstract description 17
- 150000003754 zirconium Chemical class 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000007864 aqueous solution Substances 0.000 claims description 57
- 239000012071 phase Substances 0.000 claims description 35
- 239000010410 layer Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 238000007750 plasma spraying Methods 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 239000007791 liquid phase Substances 0.000 claims description 8
- -1 zirconium ions Chemical class 0.000 claims description 8
- 229910006213 ZrOCl2 Inorganic materials 0.000 claims description 7
- 229910001625 strontium bromide Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005240 physical vapour deposition Methods 0.000 claims description 5
- 238000005328 electron beam physical vapour deposition Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 229910001427 strontium ion Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 239000011153 ceramic matrix composite Substances 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 3
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Inorganic materials [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 claims description 3
- 229910008334 ZrO(NO3)2 Inorganic materials 0.000 claims 1
- 230000004888 barrier function Effects 0.000 claims 1
- IPCAPQRVQMIMAN-UHFFFAOYSA-L zirconyl chloride Chemical group Cl[Zr](Cl)=O IPCAPQRVQMIMAN-UHFFFAOYSA-L 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 13
- 239000007789 gas Substances 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 229910002080 8 mol% Y2O3 fully stabilized ZrO2 Inorganic materials 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 239000002086 nanomaterial Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 239000003595 mist Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 3
- 239000011858 nanopowder Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000002103 nanocoating Substances 0.000 description 2
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical group Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 description 2
- 229910002077 partially stabilized zirconia Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- YJPVTCSBVRMESK-UHFFFAOYSA-L strontium bromide Chemical compound [Br-].[Br-].[Sr+2] YJPVTCSBVRMESK-UHFFFAOYSA-L 0.000 description 2
- 229910000601 superalloy Inorganic materials 0.000 description 2
- 238000010290 vacuum plasma spraying Methods 0.000 description 2
- FFQALBCXGPYQGT-UHFFFAOYSA-N 2,4-difluoro-5-(trifluoromethyl)aniline Chemical compound NC1=CC(C(F)(F)F)=C(F)C=C1F FFQALBCXGPYQGT-UHFFFAOYSA-N 0.000 description 1
- DUFCMRCMPHIFTR-UHFFFAOYSA-N 5-(dimethylsulfamoyl)-2-methylfuran-3-carboxylic acid Chemical compound CN(C)S(=O)(=O)C1=CC(C(O)=O)=C(C)O1 DUFCMRCMPHIFTR-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000000713 high-energy ball milling Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- UJVRJBAUJYZFIX-UHFFFAOYSA-N nitric acid;oxozirconium Chemical compound [Zr]=O.O[N+]([O-])=O.O[N+]([O-])=O UJVRJBAUJYZFIX-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 229940074155 strontium bromide Drugs 0.000 description 1
- RXSHXLOMRZJCLB-UHFFFAOYSA-L strontium;diacetate Chemical compound [Sr+2].CC([O-])=O.CC([O-])=O RXSHXLOMRZJCLB-UHFFFAOYSA-L 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005382 thermal cycling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a SrZrO3 nano-ceramic thermal barrier coating and a preparation method thereof. The preparation method of the SrZrO3 nano-ceramic thermal barrier coating comprises the following steps of (1) preparing a strontium salt solution; (2) preparing a zirconium salt solution; (3) preparing a spray water solution; and (4) spraying the spray water solution in an atomizing way. The SrZrO3 nano-ceramic thermal barrier coating prepared by utilizing the preparation method of the SrZrO3 nano-ceramic thermal barrier coating has the advantages of effectively inhibiting the growth of a nanometer crystal in a spraying process, greatly decreasing the steps of a coating preparation process and shortening the coating preparation period. The single-phase SrZrO3 nano-ceramic thermal barrier coating prepared through the method disclosed by the invention has the advantages of very high high-temperature phase stability, low thermal conductivity, excellent sintering-resistant property and long service life and is suitable for being used as the thermal barrier coating of high-temperature parts of an aircraft engine and a ground gas turbine.
Description
The technical field is as follows:
the invention relates to a ceramic thermal barrier coating and a preparation method thereof, in particular to SrZrO3A nano ceramic thermal barrier coating and a preparation method thereof.
Background art:
ceramic Thermal Barrier Coatings (TBCs) are one of the most advanced high-temperature protective Coatings at present, have the characteristics of good high-temperature chemical stability, scouring resistance, heat insulation and the like, can effectively relieve the high-temperature oxidation and corrosion of metal matrix materials, can reduce the working temperature of the surface of a metal matrix, can improve the economy of an aircraft turbine engine or a ground combustion engine, can greatly prolong the service life of the aircraft turbine engine or the ground combustion engine, and are widely paid attention and rapidly developed since the early 20 th century 70 s.
Currently, the most widely used ceramic thermal barrier coating material is yttria partially stabilized zirconia (YSZ, ZrO)2-6-8wt.％Y2O3). As the long-term service temperature of YSZ can not exceed 1200 ℃, along with the temperature rise, the phase change is aggravated, the sintering is easy, the oxygen conductivity is high, and transition layer metal is easy to be oxidized, so that the early failure of the coating is caused, and the requirement for further improving the inlet temperature of the turbine is difficult to meet. With the development of advanced gas turbines to high flow and high thrust-weight ratio, the surface working temperature of the thermal barrier coating is higher and higher, and may reach 1400 ℃, so that a ceramic thermal barrier coating material capable of resisting higher service temperature is needed to be found. SrZrO having perovskite structure3Has the characteristics of high melting point, high thermal expansion coefficient and sintering resistance, thus being an excellent high-temperature thermal barrier coating candidate material (W.Ma, D.Mack, R.Vassen et al, Perovskite-type ceramic as a new material for thermal barrier coatings, J.Am.Ceram.Soc.,91[8](2008) Pp.2630-2635). However, SrZrO prepared by atmospheric plasma spraying3The ceramic coating comprises SrZrO3And ZrO2Two phases, ZrO during thermal cycling2Phase changes occur leading to early failure of the coating system. Further, SrZrO3The thermal conductivity of (2) is relatively high and the toughness is poor. Therefore, it is necessary to prepare SrZrO having a nanostructure3Ceramic coating, further reducing its thermal conductivity and increasing its toughness.
The traditional process flow for preparing the thermal barrier coating with the nano coating structure by the plasma spraying method comprises the following steps: synthesizing a nano powder raw material by adopting a liquid phase method or a high-energy ball milling solid phase, obtaining micron-sized particles which have better fluidity and are suitable for plasma spraying from the synthesized raw material through a granulation process, calcining and densifying the obtained micron-sized particles, and carrying out plasma spraying by using the calcined and densified powder to prepare the nano-structure thermal barrier coating. The method has the advantages of complex process, high cost and large raw material loss, and the crystal grain growth of the nano powder inevitably occurs in the powder preparation process, so that the crystal grain size of the coating exceeds the range of the nano structure. Therefore, even if the original powder is a nano-powder, the coating layer is likely to be produced beyond the nano-structure, resulting in a decrease in the thermophysical and mechanical properties of the coating layer.
The invention content is as follows:
the invention aims at atmospheric plasma spraying SrZrO3The SrZrO is designed and provided due to the defects of the ceramic coating and the defects of the conventional nano coating preparation technology3The preparation method of the nano ceramic thermal barrier coating has the advantages of few process flows, low preparation cost, suitability for industrial production and the like.
Another purpose of the invention is to prepare single-phase SrZrO with nano structure, high phase stability, low thermal conductivity and high toughness3A nano ceramic thermal barrier coating.
The first object of the present invention is achieved by the following means, SrZrO3The preparation method of the nano ceramic thermal barrier coating comprises the following steps: (1) preparing a strontium salt solution, (2) preparing a zirconium salt solution, (3) preparing a spraying aqueous solution, and (4) atomizing and spraying the spraying aqueous solution; wherein,
(1) preparing a strontium salt solution: preparing a strontium salt aqueous solution by using soluble strontium salt;
(2) preparing a zirconium salt solution: preparing a zirconium salt aqueous solution by using soluble zirconium salt;
(3) preparing a spraying aqueous solution: mixing the prepared strontium salt solution and the prepared zirconium salt solution, and stirring for 6-24 hours to prepare a spraying aqueous solution;
(4) atomizing and spraying the spraying aqueous solution: the spraying water solution is atomized into small atomized liquid through the atomizing nozzleDropping into high-temperature plasma flame flow generated by a plasma spray gun, evaporating, reacting, melting, solidifying and depositing the atomized droplets to obtain single-phase SrZrO3(strontium zirconate) nanoceramic thermal barrier coating.
Specifically, the soluble strontium salt is Sr (CH)3COO)2(strontium acetate), Sr (NO)3)2(strontium nitrate) or SrBr2(strontium bromide).
Specifically, the soluble zirconium salt is ZrOCl2(zirconium oxychloride), ZrO (NO)3)2(zirconyl nitrate) or Zr (CH)3COO)4(zirconium acetate).
Specifically, the molar concentration of strontium ions or zirconium ions in the spraying aqueous solution is 0.5-2.0mol/L, and the molar ratio of the strontium ions to the zirconium ions in the spraying aqueous solution is 1-1.3.
Specifically, the power of a spray gun is 30-60kW, the liquid feeding pressure is 30-500kPa, the atomizing gas pressure is 30-300kPa, the liquid feeding speed is 5-40ml/min, and the spraying distance is 30-100mm in the spraying process.
Specifically, the single-phase SrZrO3The nano ceramic thermal barrier coating can be deposited on the surface of a high-temperature alloy substrate on which a metal bonding layer is deposited in advance to form a single ceramic layer coating system, or deposited on the surface of a ceramic matrix composite to form a single ceramic layer coating system, or deposited on the surface of a YSZ (yttria partially stabilized zirconia) coating deposited outside the metal bonding layer on the surface of the high-temperature alloy substrate to form a double ceramic layer coating system. The metal bonding layer in the prepared coating system can be prepared by using an atmospheric plasma spraying technology, a low-pressure plasma spraying technology, a vacuum plasma spraying technology, an electron beam physical vapor deposition technology, a supersonic flame spraying technology, a plasma physical vapor deposition technology and the like.
Specifically, the YSZ coating is prepared by any one method of plasma spraying, electron beam physical vapor deposition, plasma physical vapor deposition or liquid phase plasma spraying.
Using SrZrO3SrZrO prepared by preparation method of nano ceramic thermal barrier coating3A nano ceramic thermal barrier coating.
Preferably, SrZrO is used3SrZrO prepared by preparation method of nano ceramic thermal barrier coating3The thickness of the nano ceramic thermal barrier coating is 30-1000 μm.
The invention has the advantages that: (1) the method of the invention not only can effectively inhibit the growth of the nanocrystalline grains in the spraying process, but also greatly reduces the coating preparation process steps and shortens the coating preparation period; (2) the method can adjust the components of the coating in time and flexibly by adjusting the components of the solution, and is a coating preparation method which has low cost and is easy to realize industrial production; (3) single phase SrZrO prepared by the method of the invention3The nano ceramic thermal barrier coating has high-temperature phase stability, low thermal conductivity, excellent anti-sintering performance and long service life, and is suitable for being used as a thermal barrier coating of high-temperature components of aeroengines and ground gas turbines.
Description of the drawings:
FIG. 1 shows SrZrO prepared in example 13The nano ceramic thermal barrier coating respectively has XRD patterns in a preparation state and after being subjected to heat treatment at 1400 ℃ for 300 hours.
FIG. 2 shows SrZrO prepared in example 13SEM photograph of cross section of the nanoceramic thermal barrier coating.
FIG. 3 is SrZrO prepared in example 23The nano ceramic thermal barrier coating respectively has XRD patterns in a preparation state and after being subjected to heat treatment at 1400 ℃ for 300 hours.
FIG. 4 shows SrZrO prepared in example 33The nano ceramic thermal barrier coating respectively has XRD patterns in a preparation state and after being subjected to heat treatment at 1400 ℃ for 300 hours.
FIG. 5 shows SrZrO prepared in example 43The nano ceramic thermal barrier coating is respectively prepared and preparedXRD pattern after heat treatment at 1400 ℃ for 300 hours.
The specific implementation mode is as follows:
example 1: SrZrO3The preparation method of the nano ceramic thermal barrier coating comprises the following steps:
(1) preparing a strontium salt solution: with Sr (CH)3COO)2Preparation of Sr (CH)3COO)2200ml of aqueous solution of Sr (CH)3COO)2The molar concentration of the aqueous solution is 2 mol/L;
(2) preparing a zirconium salt solution: using ZrOCl2Preparation of ZrOCl2200ml of aqueous solution, ZrOCl2The molar concentration of the aqueous solution is 2 mol/L;
(3) preparing a spraying aqueous solution: prepared Sr (CH)3COO)2Aqueous solution and ZrOCl2Mixing the aqueous solutions, and magnetically stirring for 6h to prepare a spraying aqueous solution;
(4) atomizing and spraying the spraying aqueous solution: atomizing the spraying water solution into mist droplets by a gas pressure liquid feeding device through an atomizing nozzle, feeding the mist droplets into high-temperature plasma flame flow generated by a plasma spray gun, evaporating, reacting, melting and solidifying the mist droplets, and depositing the mist droplets on the surface of a nickel-based high-temperature alloy substrate on which a NiCrAlY (nickel-chromium-aluminum-yttrium) metal bonding layer is deposited in advance to obtain single-phase SrZrO3Nano ceramic thermal barrier coating to obtain single ceramic layer thermal barrier coating system, single-phase SrZrO3The nanoceramic thermal barrier coating thickness is about 120 μm. The NiCrAlY metal bonding layer is deposited on the surface of the nickel-based high-temperature alloy substrate by an electron beam physical vapor deposition technology, and the thickness of the NiCrAlY metal bonding layer is 130 mu m.
In the liquid phase spraying process, the power of a spray gun is 30kW, the liquid feeding pressure is 250kPa, the atomizing gas pressure is 150kPa, the liquid feeding speed is 25ml/min, and the spraying distance is 60 mm.
SrZrO prepared by the method of example 13The nano ceramic thermal barrier coating has no phase change after being subjected to heat treatment at 1400 ℃ for 300h, and the thermal conductivity is 1.2 W.m-1·K-1The service life is about 630 times under the thermal cycle condition of keeping the temperature in the furnace at 1121 ℃ for 50min and cooling outside the furnace for 10 min.
It can be seen from FIG. 1 that the coating prepared in example 1 is SrZrO3The coating is a single-phase coating, does not generate phase change after being thermally treated at 1400 ℃ for 300 hours, and has good phase stability.
It can be seen from fig. 2 that the coating prepared in example 1 has a nano structure and has vertical cracks, and the coating has a structure which enables the coating to have lower thermal conductivity and longer thermal cycle life.
Example 2: SrZrO3The preparation method of the nano ceramic thermal barrier coating comprises the following steps:
(1) preparing a strontium salt solution: with Sr (NO)3)2Preparation of Sr (NO)3)2300ml of aqueous solution of Sr (NO)3)2The molar concentration of the aqueous solution is 3 mol/L;
(2) preparing a zirconium salt solution: with Zr (CH)3COO)4Preparing Zr (CH)3COO)4Aqueous solution 200ml, Zr (CH)3COO)4The molar concentration of the aqueous solution is 4 mol/L;
(3) preparing a spraying aqueous solution: prepared Sr (CH)3COO)2Aqueous solution and ZrOCl2Mixing the aqueous solutions, and magnetically stirring for 24h to prepare a spraying aqueous solution;
(4) atomizing and spraying the spraying aqueous solution: a NiCoCrAlY (nickel cobalt chromium aluminum yttrium) metal bonding layer with the thickness of 100 mu m is deposited on the surface of a nickel-based high-temperature alloy substrate through a vacuum plasma spraying technology, and then an 8YSZ ceramic layer with the thickness of 100 mu m is prepared on the surface of the NiCoCrAlY metal bonding layer through an atmospheric plasma spraying technology. Atomizing the spraying aqueous solution into small mist by an atomizing nozzle by adopting a gas pressure liquid feeding deviceThe liquid drops are sent into high-temperature plasma flame flow generated by a plasma spray gun, and the atomized liquid drops are deposited on the surface layer of the 8YSZ ceramic layer to form single-phase SrZrO after evaporation, reaction, melting and solidification3Nano ceramic thermal barrier coating to obtain double ceramic layer thermal barrier coating system, single phase SrZrO3The thickness of the nano ceramic thermal barrier coating is 200 μm.
In the liquid phase spraying process, the power of a spray gun is 60kW, the liquid feeding pressure is 30kPa, the atomizing gas pressure is 300kPa, the liquid feeding speed is 5ml/min, and the spraying distance is 30 mm.
SrZrO prepared by the method of example 23The nano ceramic thermal barrier coating has no phase change after being subjected to heat treatment at 1400 ℃ for 300h, and the thermal conductivity is 1.1 W.m-1·K-1The service life is about 900 times under the thermal cycle condition of keeping the temperature in the furnace at 1121 ℃ for 50min and cooling outside the furnace for 10 min.
It can be seen from FIG. 3 that the coating prepared in example 2 is SrZrO3The coating is a single-phase coating, does not generate phase change after being thermally treated at 1400 ℃ for 300 hours, and has good phase stability.
Example 3: SrZrO3The preparation method of the nano ceramic thermal barrier coating comprises the following steps:
(1) preparing a strontium salt solution: with SrBr2Preparation of SrBr2300ml of aqueous solution of SrBr2The molar concentration of the aqueous solution is 4 mol/L;
(2) preparing a zirconium salt solution: with ZrO (NO)3)2Preparation of ZrO (NO)3)2360ml of aqueous solution, ZrO (NO)3)2The molar concentration of the aqueous solution is 3 mol/L;
(3) preparing a spraying aqueous solution: the prepared SrBr2Aqueous solution and ZrO (NO)3)2Mixing the aqueous solutions, and magnetically stirring for 15h to prepare a spraying aqueous solution;
(4) atomizing and spraying the spraying aqueous solution: passing electrons on the surface of the nickel-based superalloy substrateA NiCoCrAlYSi (nickel cobalt chromium aluminum yttrium silicon) metal bonding layer with the thickness of 100 mu m is deposited by a beam physical vapor deposition technology, and then a 8YSZ ceramic layer with the thickness of 150 mu m is deposited on the surface of the NiCoCrAlYSi metal bonding layer by applying plasma physical vapor deposition. Atomizing the spraying water solution into atomized droplets by a gas pressure liquid feeding device through an atomizing nozzle, feeding the atomized droplets into a high-temperature plasma flame flow generated by a plasma spray gun, evaporating, reacting, melting and solidifying the atomized droplets, and depositing the atomized droplets on the surface of an 8YSZ ceramic layer to form single-phase SrZrO3Nano ceramic thermal barrier coating to obtain double ceramic layer thermal barrier coating system, single phase SrZrO3The thickness of the nano ceramic thermal barrier coating is 150 μm.
In the liquid phase spraying process, the power of a spray gun is 45kW, the liquid feeding pressure is 500kPa, the atomizing gas pressure is 300kPa, the liquid feeding speed is 40ml/min, and the spraying distance is 100 mm.
SrZrO prepared by the method of example 33The nano ceramic thermal barrier coating has no phase change after being subjected to heat treatment at 1400 ℃ for 300h, and the thermal conductivity is 1.1 W.m-1·K-1The service life is about 950 times under the thermal cycle condition of keeping the temperature in the furnace at 1121 ℃ for 50min and cooling outside the furnace for 10 min.
From FIG. 4 it can be seen that the coating prepared in example 3 is SrZrO3The coating is a single-phase coating, does not generate phase change after being thermally treated at 1400 ℃ for 300 hours, and has good phase stability.
Example 4: SrZrO3The preparation method of the nano ceramic thermal barrier coating comprises the following steps:
(1) preparing a strontium salt solution: with Sr (CH)3COO)2Preparation of Sr (CH)3COO)2400ml of aqueous solution of Sr (CH)3COO)2The molar concentration of the aqueous solution is 2 mol/L;
(2) preparing a zirconium salt solution: with ZrO (NO)3)2Preparation of ZrO (NO)3)2160ml of aqueous solution, ZrO (NO)3)2The molar concentration of the aqueous solution is 4 mol/L;
(3) preparing a spraying aqueous solution: prepared Sr (CH)3COO)2Aqueous solution and ZrO (NO)3)2Mixing the aqueous solutions, and magnetically stirring for 18h to prepare a spraying aqueous solution;
(4) atomizing and spraying the spraying aqueous solution: a NiCoCrAlYHf (nickel cobalt chromium aluminum yttrium hafnium) metal bonding layer with the thickness of about 80 mu m is deposited on the surface of a nickel-based superalloy substrate by a supersonic speed flame deposition technology, and then an 8YSZ ceramic layer with the thickness of 150 mu m is deposited on the surface of the NiCoCrAlYHf metal bonding layer by a liquid phase plasma spraying technology. Atomizing the spraying water solution into atomized droplets by a gas pressure liquid feeding device through an atomizing nozzle, feeding the atomized droplets into a high-temperature plasma flame flow generated by a plasma spray gun, evaporating, reacting, melting and solidifying the atomized droplets, and depositing the atomized droplets on the surface of an 8YSZ ceramic layer to form single-phase SrZrO3Nano ceramic thermal barrier coating to obtain double ceramic layer thermal barrier coating system, single phase SrZrO3The thickness of the nano ceramic thermal barrier coating is 200 μm.
In the liquid phase spraying process, the power of a spray gun is 50kW, the liquid feeding pressure is 160kPa, the atomizing gas pressure is 240kPa, the liquid feeding speed is 28ml/min, and the spraying distance is 75 mm.
SrZrO prepared by the method of example 43The nano ceramic thermal barrier coating has no phase change after being subjected to heat treatment at 1400 ℃ for 300h, and the thermal conductivity is 1.2 W.m-1·K-1The service life is about 890 times under the thermal cycle condition of heat preservation in the furnace at 1121 ℃ for 50min and cooling outside the furnace for 10 min.
It can be seen from FIG. 5 that the coating prepared in example 4 is SrZrO3The coating is a single-phase coating, does not generate phase change after being thermally treated at 1400 ℃ for 300 hours, and has good phase stability.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1.SrZrO3The preparation method of the nano ceramic thermal barrier coating is characterized by comprising the following steps: (1) preparing a strontium salt solution, (2) preparing a zirconium salt solution, (3) preparing a spraying aqueous solution, and (4) atomizing and spraying the spraying aqueous solution; wherein,
(1) preparing a strontium salt solution: preparing a strontium salt aqueous solution by using soluble strontium salt;
(2) preparing a zirconium salt solution: preparing a zirconium salt aqueous solution by using soluble zirconium salt;
(3) preparing a spraying aqueous solution: mixing the prepared strontium salt aqueous solution and the prepared zirconium salt aqueous solution, and stirring for 6-24 hours to prepare a spraying aqueous solution;
(4) atomizing and spraying the spraying aqueous solution: the spraying water solution is atomized into mist-like small droplets through the atomizing nozzle and is sent into high-temperature plasma flame flow generated by a plasma spray gun, and the mist-like small droplets are evaporated, reacted, melted and solidified to be deposited to obtain single-phase SrZrO3A nano ceramic thermal barrier coating.
2. SrZrO according to claim 13The preparation method of the nano ceramic thermal barrier coating is characterized in that the soluble strontium salt is Sr (CH)3COO)2、Sr(NO3)2Or SrBr2Any one of them.
3. SrZrO according to claim 13The preparation method of the nano ceramic thermal barrier coating is characterized in that the soluble zirconium salt is ZrOCl2、ZrO(NO3)2Or Zr (CH)3COO)4Any one of them.
4. SrZrO according to claim 13The preparation method of the nano ceramic thermal barrier coating is characterized in that the molar concentration of strontium ions or zirconium ions in the spraying aqueous solution is 0.5-2.0mol/L, and the molar ratio of the strontium ions to the zirconium ions in the spraying aqueous solution is 1-1.3.
5. SrZrO according to claim 13The preparation method of the nano ceramic thermal barrier coating is characterized in that the power of a spray gun is 30-60kW, the liquid feeding pressure is 30-500kPa, the atomizing gas pressure is 30-300kPa, the liquid feeding speed is 5-40ml/min, and the spraying distance is 30-100mm in the spraying process.
6. SrZrO according to claim 13The preparation method of the nano ceramic thermal barrier coating is characterized in that the single-phase SrZrO3Nano ceramic thermal barrier coatingThe high-temperature alloy ceramic matrix composite material can be deposited on the surface of a high-temperature alloy matrix on which a metal bonding layer is deposited in advance, or on the surface of a ceramic matrix composite material, or on the surface of a YSZ coating layer deposited outside the metal bonding layer on the surface of the high-temperature alloy matrix.
7. SrZrO according to claim 63The preparation method of the nano ceramic thermal barrier coating is characterized in that the YSZ coating is prepared by adopting any one method of plasma spraying, electron beam physical vapor deposition, plasma physical vapor deposition or liquid phase plasma spraying.
8. Using SrZrO according to any one of claims 1 to 73SrZrO prepared by preparation method of nano ceramic thermal barrier coating3A nano ceramic thermal barrier coating.
9. The SrZrO of claim 8 using any one of claims 1 to 73SrZrO prepared by preparation method of nano ceramic thermal barrier coating3The thickness of the nano ceramic thermal barrier coating is 30-1000 μm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106243998A (en) * | 2016-08-29 | 2016-12-21 | 芜湖众力部件有限公司 | A kind of hydroxyl-terminated polyurethane thermostability modified coating and preparation method thereof |
| CN108249921A (en) * | 2018-03-26 | 2018-07-06 | 内蒙古工业大学 | A kind of method of ceramic heat-barrier coating and the quick prepares coating of reaction in-situ |
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| CN109848008A (en) * | 2018-11-21 | 2019-06-07 | 天津日中环保科技股份有限公司 | A kind of nano-spray construction technology |
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Citations (6)
| 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 |
| US20100081558A1 (en) * | 2005-10-31 | 2010-04-01 | Thomas Alan Taylor | Ceramic powders and thermal barrier coatings made therefrom |
| CN102345122A (en) * | 2011-10-26 | 2012-02-08 | 北京科技大学 | Multipurpose low-conductivity ceramic/noble metal lamellar composite thermal barrier coating |
| CN102851631A (en) * | 2011-07-01 | 2013-01-02 | 中国农业机械化科学研究院 | Preparation method of thermal barrier coating and thermal barrier coating prepared by preparation method |
| CN103320741A (en) * | 2013-06-17 | 2013-09-25 | 中国航空工业集团公司北京航空制造工程研究所 | Preparation method of nano-structure thermal barrier coating through plasma spraying of liquid feed |
| CN104498858A (en) * | 2014-12-02 | 2015-04-08 | 佛山铭乾科技有限公司 | Nano-ceramic thermal barrier coating and preparation method thereof |
-
2015
- 2015-05-27 CN CN201510277623.8A patent/CN104846322A/en active Pending
Patent Citations (6)
| 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 |
| US20100081558A1 (en) * | 2005-10-31 | 2010-04-01 | Thomas Alan Taylor | Ceramic powders and thermal barrier coatings made therefrom |
| CN102851631A (en) * | 2011-07-01 | 2013-01-02 | 中国农业机械化科学研究院 | Preparation method of thermal barrier coating and thermal barrier coating prepared by preparation method |
| CN102345122A (en) * | 2011-10-26 | 2012-02-08 | 北京科技大学 | Multipurpose low-conductivity ceramic/noble metal lamellar composite thermal barrier coating |
| CN103320741A (en) * | 2013-06-17 | 2013-09-25 | 中国航空工业集团公司北京航空制造工程研究所 | Preparation method of nano-structure thermal barrier coating through plasma spraying of liquid feed |
| CN104498858A (en) * | 2014-12-02 | 2015-04-08 | 佛山铭乾科技有限公司 | Nano-ceramic thermal barrier coating and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106243998A (en) * | 2016-08-29 | 2016-12-21 | 芜湖众力部件有限公司 | A kind of hydroxyl-terminated polyurethane thermostability modified coating and preparation method thereof |
| CN108249921A (en) * | 2018-03-26 | 2018-07-06 | 内蒙古工业大学 | A kind of method of ceramic heat-barrier coating and the quick prepares coating of reaction in-situ |
| CN110846642A (en) * | 2018-08-20 | 2020-02-28 | 北京绿时顺风科技有限公司 | Method for manually preparing ceramic thermal barrier coating on metal surface at room temperature |
| CN109136820A (en) * | 2018-08-31 | 2019-01-04 | 沃德传动（天津）股份有限公司 | A kind of novel nitridation set renovation technique |
| CN109848008A (en) * | 2018-11-21 | 2019-06-07 | 天津日中环保科技股份有限公司 | A kind of nano-spray construction technology |
| CN112062556A (en) * | 2019-06-10 | 2020-12-11 | 上海大学 | Calcium zirconate-strontium zirconate-barium zirconate solid solution ceramic material and preparation method thereof |
| CN112062556B (en) * | 2019-06-10 | 2022-05-31 | 上海大学 | Calcium zirconate-strontium zirconate-barium zirconate solid solution ceramic material and preparation method thereof |
| CN110818409A (en) * | 2019-12-25 | 2020-02-21 | 内蒙古工业大学 | Preparation of SrZrO3And SrZrO3Ceramic material |
| CN110818409B (en) * | 2019-12-25 | 2022-03-08 | 内蒙古工业大学 | Preparation of SrZrO3And SrZrO3Ceramic material |
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