JP2005336524A - Thermal barrier coating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remarkably enhance the oxidation resistance of a thermal barrier coating material by providing the oxygen ingress barrier effect to a zirconium oxide layer formed on the outermost surface of a thermal barrier coating layer. <P>SOLUTION: Thermal barrier layers 3, 5 consisting of zirconium oxide are formed on the surface of a base material 1 formed of alloy mainly consisting of nickel, cobalt or iron via a metallic bond layer 2 of alloy which contains at least one of nickel, cobalt and iron and consists of at least one element of chromium, aluminum and yttrium. At least one oxidation suppressive layer 4 consisting of a compound of the oxygen defect concentration lower than that of the zirconium oxide is formed in the thermal barrier layers 3, 5 or on the interface between the thermal barrier layer 3 and the metallic bond layer 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a thermal barrier coating material applied to high-temperature equipment such as a gas turbine and a jet engine, a manufacturing method thereof, and a high-temperature component using the material.

  In recent years, high efficiency and high performance of high temperature equipment such as gas turbines and jet engines have been energetically advanced. The most effective means for achieving such high performance is to increase the operating temperature of the equipment, but with this, the materials used for moving and stationary blades have higher temperature strength and corrosion resistance.・ Oxidation resistance and erosion resistance are required.

  However, the development of single alloy materials based on nickel, cobalt, and iron has already seen limitations in improving the material properties, and the corrosion and oxidation resistant coatings on these high strength alloys achieve higher temperatures. It is recognized as an indispensable technology. In addition, a thermal barrier coating (TBC) has been developed to increase the cooling efficiency of the base material by forming a ceramic layer with low thermal conductivity on the surface of the metal coating layer for the purpose of use in a higher temperature environment. Application to actual machines is proceeding with low vanes.

In TBC, the metal bonding layer formed between the substrate and the ceramic layer is responsible for the corrosion and oxidation resistance of the coating, and also has the role of relieving thermal stress caused by the difference in thermal expansion coefficient between the substrate and the ceramic. ing. Currently, M-Cr-Al-Y alloys (wherein M is at least one element selected from nickel, cobalt, and iron) are generally used for the metal layer because of these required characteristics. On the other hand, for the outermost ceramic layer, zirconium oxide (Y ₂ O ₃ stabilized ZrO ₂ ) whose structure is stabilized by yttrium is the widest because ceramics have a low thermal conductivity and a thermal expansion coefficient close to that of metals. It is used.

  As a method for forming the coating layer, plasma spraying, electron beam physical vapor deposition (EB-PVD), chemical vapor deposition (CVD), and the like can be considered. In particular, plasma spraying is easy to form a thick film, Because of the wide selection of materials, it is a common coating for moving and stationary blades of gas turbines and jet engines.

  Currently, the coating layer of zirconium oxide produced by the thermal spray method has macro defects such as voids and penetration cracks, and oxygen in the atmosphere easily penetrates, so the oxidation resistance effect is not expected much, In the future, it is expected that voids and penetration cracks will be greatly reduced by improving thermal spraying and physical vapor deposition.

  However, since zirconium oxide is an oxygen ion conductor that easily allows oxygen ions to pass therethrough, there is a high possibility that the metal bonding layer surface is oxidized by oxygen ion conduction to cause material deterioration instead of gas intrusion through macro defects.

  As described above, since the zirconium oxide layer on the outermost surface of the thermal barrier coating is a conductor of oxygen ions, the surface of the metal bonding layer is likely to be oxidized by oxygen ion conduction and cause material deterioration. It cannot be used as a deterrence layer.

  The present invention has been made in view of such circumstances, and prevents oxygen ion conduction in zirconium oxide and enhances the function as an oxidation-resistant inhibiting layer by imparting an oxidation-resistant effect to the zirconium oxide layer. Another object of the present invention is to provide a thermal barrier coating material, a method for producing the same, and a high-temperature component using the material.

  As described above, the zirconium oxide coating layer produced by the thermal spraying method has macro defects such as voids and through cracks, and oxygen in the atmosphere easily penetrates and has a low oxidation resistance effect. In addition, since zirconium oxide is an oxygen ion conductor that easily allows oxygen ions to pass therethrough, there is a high possibility that the metal bonding layer surface is oxidized by oxygen ion conduction to cause material deterioration instead of gas intrusion through macro defects.

  The inventor has paid attention to the fact that if this oxygen intrusion mechanism is suppressed, an oxidation inhibiting effect can be imparted to the thermal barrier coating top layer. That is, when a thin low oxygen defect concentration compound layer is formed on zirconium oxide, the oxygen potential on the surface of the metal bonding layer can be reduced to near the oxygen equilibrium potential of the compound. Therefore, it is assumed that it is possible to reduce the oxidation rate of the metal bonding layer and to extend the life of the coating material.

  The inventor formed a layer made of an oxide having an oxygen defect concentration lower than that of zirconium oxide within the zirconium oxide layer or at the interface between the zirconium oxide layer and the metal bonding layer to a thickness of several μm. It was recognized that the oxide layer can be provided with a shielding effect against oxygen intrusion, and the oxidation resistance of the thermal barrier coating material can be significantly improved. Note that if the thickness of the layer made of an oxide having an oxygen defect concentration lower than that of zirconium oxide is 10 μm or more, the thermal cycle life is reduced. Therefore, the thickness is desirably 10 μm or less.

  The present invention has been made on the basis of the above knowledge. In the invention according to claim 1, the surface of a base material made of an alloy mainly composed of nickel, cobalt, or iron has a heat shield made of zirconium oxide. The layer is a thermal barrier coating material formed through a metal bonding layer of an alloy containing at least one of nickel, cobalt, and iron, and at least one element of chromium, aluminum, and yttrium, A thermal barrier coating characterized in that at least one oxidation inhibiting layer made of a compound having a lower oxygen defect concentration than zirconium oxide is formed in the thermal barrier layer or at the interface between the thermal barrier layer and the metal bonding layer. Provide material.

  In the invention according to claim 2, at least one of nickel, cobalt, and iron is provided on the surface side of the base material made of an alloy containing nickel, cobalt, or iron as a main component. A thermal barrier coating material formed through a metal bonding layer and an intermediate metal layer of an alloy composed of this and at least one element of chromium, aluminum, and yttrium, wherein the thermal barrier layer on the outermost surface side A heat shield comprising an oxidation inhibiting layer made of a compound having an oxygen defect concentration lower than that of zirconium oxide at the interface between the heat shield layer on the innermost surface or the intermediate metal layer on the innermost surface. Provide coating material.

  According to a fifth aspect of the present invention, there is provided a thermal barrier coating material according to the first or second aspect, wherein the oxidation inhibiting layer is mainly composed of aluminum oxide, chromium oxide or titanium oxide. A method of forming the oxidation-inhibiting layer by previously forming a metal / alloy layer containing at least one element selected from aluminum, chromium, and titanium on the surface of the metal bonding layer or the intermediate metal layer; And a step of forming the metal / alloy layer as an oxide layer by heat treatment in the atmosphere or in a low vacuum performed at the time of forming the zirconium oxide as the heat shielding layer, or after that. A method for producing a coating material is provided.

  According to a sixth aspect of the present invention, there is provided the thermal barrier coating material according to the first or second aspect, wherein the oxidation inhibiting layer is mainly composed of aluminum nitride, chromium nitride or titanium nitride. A method of forming the oxidation-inhibiting layer by previously forming a metal / alloy layer containing at least one element selected from aluminum, chromium, and titanium on the surface of the metal bonding layer or the intermediate metal layer; And a step of forming the metal / alloy layer into a nitride layer by heat treatment in a nitrogen atmosphere.

  In the invention according to claim 7, any one of physical vapor deposition, chemical vapor deposition, sputtering, thermal spraying, spin coating, and slurry is used as the step of previously forming the metal / alloy layer on the surface of the metal bonding layer or the intermediate metal layer. The method for producing a thermal barrier coating material according to claim 5 or 6, wherein the method is used.

  The invention according to claim 8 provides a high-temperature component using the thermal barrier coating material according to any one of claims 1 to 4.

  Examples of the high-temperature parts include high-temperature parts for power generation gas turbines, high-temperature parts for aircraft jet engines, and high-temperature parts for diesel engines.

  According to the present invention, the zirconium oxide layer formed on the outermost surface of the thermal barrier coating layer can be provided with an oxygen penetration shielding effect, and the oxidation resistance of the thermal barrier coating material can be significantly improved.

  Hereinafter, embodiments of a thermal barrier coating material and a manufacturing method thereof according to the present invention will be described with reference to the drawings.

1st Embodiment (FIGS. 1-5)
In the present embodiment, a thermal barrier coating material will be described in which one oxidation inhibiting layer made of a compound having a lower oxygen defect concentration than zirconium oxide is formed in the thermal barrier layer made of zirconium oxide. FIG. 1 is a cross-sectional view showing the configuration of this thermal barrier coating material.

  As shown in FIG. 1, in this thermal barrier coating material, a metal bonding layer 2 made of an M-Cr-Al-Y alloy is formed on the surface of a substrate 1 made of a Ni-base superalloy IN738LC (trade name). Yes. Note that M in the M—Cr—Al—Y alloy is made of at least one element selected from nickel, cobalt, and iron. In the present embodiment, the metal bonding layer 2 made of a NiCoCrAlY alloy is specifically formed.

  Zirconium oxide layers 3 and 5 are formed as heat shield layers on the surface of the metal bonding layer 2, and the oxygen defect concentration is higher than that of zirconium oxide at the intermediate position in the thickness direction in the zirconium oxide layers 3 and 5. A low oxygen defect concentration compound layer 4 is formed as an oxidation inhibiting layer made of a low compound. That is, the metal bonding layer side zirconium oxide layer 3 is formed on the surface side of the substrate 1 via the metal bonding layer 2, the low oxygen defect concentration compound layer 4 is formed on the surface side, and the low oxygen defect level is further reduced. An outermost zirconium oxide layer 5 is formed on the surface side of the concentration compound layer 4.

As the zirconium oxide, 8 wt% Y ₂ O ₃ stabilized ZrO ₂ which is currently most widely applied is suitable, but the amount of the stabilizer may be changed in the range of 5 to 20 wt%, or the stabilizer itself. Can be replaced with magnesium oxide, calcium oxide, cerium oxide, ytterbium oxide, eurobium oxide, or the like.

In addition, as the low oxygen defect concentration compound layer 4, an aluminum oxide layer is applied and formed by, for example, a slurry method. That is, the surface of the metal bonding layer side zirconium oxide layer 3 was formed of aluminum of the slurry, by heat treatment in a low vacuum, it was formed as an aluminum oxide layer (Al 2 _{O 3).}

  FIG. 2 shows a change in oxygen potential in the thermal barrier coating material on which such a low oxygen defect concentration compound layer 4 is formed. The vertical axis of FIG. 2 represents the oxygen potential, and the horizontal axis represents the layer thickness of the thermal barrier coating material. In FIG. 2, a characteristic line a indicated by a broken line indicates an oxygen potential when the low oxygen defect concentration compound layer 4 is not formed, and a characteristic line b indicated by a solid line indicates a case where the low oxygen defect concentration compound layer 4 is formed. Shows the oxygen potential.

  When the low oxygen defect concentration compound layer 4 is not formed in the zirconium oxide layers 3 and 5, oxygen ion conduction easily occurs in the zirconium oxide as apparent from the characteristic line a. On the other hand, when the thin low oxygen defect concentration compound layer 4 is formed in the zirconium oxide layers 3 and 5, as is clear from the characteristic line b, the oxygen potential on the surface of the metal bonding layer 2 is substantially reduced. It can be reduced to near the oxygen equilibrium potential of the low oxygen defect concentration compound. Therefore, it is possible to reduce the oxidation rate of the metal bonding layer 2 and to extend the life of the thermal barrier coating material.

  3 and 4 are graphs showing the measurement results of the oxidation amount ratio (FIG. 3) and the peel life ratio (FIG. 4) for samples in which the low oxygen defect concentration compound layer 4 is set to various thicknesses.

  That is, as an example sample of the present invention, a Ni-base superalloy IN738LC is used as the base material 1, a NiCoCrAlY alloy layer having a thickness of 150 μm is formed on the surface thereof as a metal bonding layer 2, and a thermal barrier layer is formed on the surface. As a sample, a metal bonding layer side zirconium oxide layer 3 having a thickness of 300 μm was formed. On the surface of the zirconium oxide layer 3 of this sample, aluminum oxide is deposited as a low oxygen defect concentration compound layer 4 by a slurry method to a thickness of 1 μm (sample 1), 5 μm (sample 2), 10 μm (sample 3), 20 μm (sample) 4) and 50 μm (sample 5), and the outermost zirconium oxide layer 5 was formed on the surface thereof. Moreover, the sample as a comparative example which does not contain a compound layer was created.

  For these samples 1 to 5 and the comparative example, the amount of oxidation under heating conditions at 1000 ° C. for 500 hours (FIG. 3) and the peeling life of the metal bonding layer under a thermal cycle at room temperature and 1200 ° C. (FIG. 4) are compared. did. In addition, the oxidation amount and peeling lifetime of the sample not including the compound layer prepared as a comparative example were set to “1” in FIGS. 3 and 4.

  As a result of this comparison, as is clear from FIG. 3, the amount of oxidation of the metal bonding layer 2 was greatly reduced in all of the test pieces 1 to 5 as compared with the comparative example. As is clear from FIG. 4, the thermal cycle life of Samples 1 and 2 in which the thickness of the low oxygen defect concentration compound layer 4 is 10 μm or less hardly changes compared to the comparative example. However, when the thickness of the low oxygen defect concentration compound layer 4 exceeded 10 μm as in Samples 3 to 5, the thermal cycle life tended to be significantly reduced as compared with the comparative example. Therefore, the thickness of the low oxygen defect concentration compound layer 4 is preferably 10 μm or less from the viewpoint that a cycle life equivalent to that of the conventional product can be obtained.

  In the present embodiment, the low oxygen defect concentration compound layer 4 is sandwiched between the zirconium oxide layers 3 and 5, but may be formed at the interface between the zirconium oxide layer 3 and the metal bonding layer 2. It was recognized that it performed almost the same function. When the difference in thermal expansion coefficient between the zirconium oxide and the low oxygen defect concentration compound is large, it is preferable to dispose the zirconium oxide and the low oxygen defect concentration compound at a position on the metal bonding layer 2 side where the temperature is low in order to eliminate the thermal stress misfit. desirable.

In general, the oxygen ion conductivity is associated with oxygen defects in the low oxygen defect concentration compound layer 4. In the present embodiment, in order to search for a material suitable for the low oxygen defect concentration compound layer 4, as shown in FIG. 5, zirconium oxide alone, aluminum oxide (Al ₂ O ₃ ) having an oxygen defect concentration lower than this, Titanium oxide (TiO ₂ ), chromium oxide (Cr ₂ O ₃ ), silicon carbide (SiC), titanium nitride (TiN) and aluminum nitride (AlN) are 5 μm thick in the middle of the zirconium oxide layer. The amount of oxidation of the metal bonding layer at 1000 ° C. × 500 h was compared for the sample formed in (1).

  As a result of the comparison shown in FIG. 5, aluminum oxide, titanium oxide, chromium oxide, silicon carbide, titanium nitride and aluminum nitride having a low oxygen defect concentration as compared with the oxidation amount of zirconium oxide alone are In both cases, the oxidation amount was reduced from 2/3 to 1/2, and it was revealed that the oxidation resistance was sufficiently improved. Therefore, it was found that any of the above materials can be used as a product according to the present invention. In particular, aluminum oxide has a high effect of improving oxidation resistance, suggesting that it is optimal as the low oxygen defect concentration compound layer 4 formed at an intermediate position in the zirconium oxide layers 3 and 5.

  In addition to the slurry method, the low oxygen defect concentration compound layer 4 was formed by physical vapor deposition, chemical vapor deposition, sputtering, thermal spraying, spin coating, and the like. As a result, layer formation was possible by any method. However, the thermal spraying method is difficult to control the defects in the layer and is not very effective, whereas the EB-PVD method, which is a kind of physical vapor deposition, the sputtering method, and the slurry method are all metal bonding layers. It was confirmed that the oxidation amount of can be reduced to 2/3 of the conventional product.

  According to the first embodiment described above, the low oxygen defect concentration compound layer 4 is formed in the zirconium oxide layers 3 and 5 or at the interface between the zirconium oxide layer 3 and the metal bonding layer 2 to thereby form the metal bonding layer 2. As a result, it was possible to obtain a thermal barrier coating material having an improved function as an oxidation-resistant deterring layer.

Second Embodiment (FIGS. 6 to 8)
In the second embodiment of the present invention, a heat shielding layer composed of two or more zirconium oxides is formed on the surface side of the base material via the metal bonding layer and the intermediate metal layer, respectively, and the heat shielding layer on the outermost surface side is formed. A thermal barrier coating material in which an oxidation inhibiting layer made of a compound having a lower oxygen defect concentration than zirconium oxide is formed in the layer or at the interface between the thermal barrier layer on the outermost surface side and the intermediate metal layer on the inner side will be described. .

  FIG. 6 is a cross-sectional view specifically showing the configuration of the thermal barrier coating material according to the present embodiment. In this thermal barrier coating material, as shown in FIG. 6, the metal bonding layer side zirconium oxide layer 3 is formed on the surface of the substrate 1 via the metal bonding layer 2, and the intermediate metal layer 6 is formed on the surface side. Has been. The material of the intermediate metal layer 6 is the same as that of the metal bonding layer 2. A low oxygen defect concentration compound layer 4 is formed on the surface of the intermediate metal layer 6, and an outermost zirconium oxide layer 5 is formed on the surface side. Each of these components is the same as in the first embodiment.

  FIG. 7 is a flowchart for explaining a method of manufacturing the thermal barrier coating member shown in FIG. As shown in FIG. 7, in this embodiment, the base material 1 is first processed into a predetermined dimension (S101), and the metal bonding layer 2 is formed on the base material 1 (S102). Next, the bonding layer side zirconium oxide layer 3 is formed through the metal bonding layer 2 (S103), and the intermediate metal layer 6 is formed on the surface (S104). Then, a metal such as aluminum, chromium, or titanium is attached to the surface of the intermediate metal layer 6 by the same method as in the first embodiment to form a metal / alloy layer (S105). Thereafter, as shown as creation process 1 in FIG. 7, oxidation or nitridation is performed to oxidize or nitride aluminum, chromium, titanium, etc., and the metal / alloy layer is made an oxide or nitride layer (S106). . Finally, the outermost surface zirconium oxide layer 5 is formed (S107).

  As shown in manufacturing process 2 in FIG. 7, in the case where atmospheric heat treatment (S108) is performed as the oxidation treatment, after the outermost zirconium oxide layer 5 is formed, heat treatment is performed in air or in a low vacuum. It is also possible to form an oxide at the interface. The manufacturing process shown in FIG. 7 can also be applied to the first embodiment except for the formation of the intermediate metal layer.

FIG. 8 shows that in the above configuration, the low oxygen defect concentration compound layer 4 is made of zirconium oxide alone, aluminum oxide (Al ₂ O ₃ ), chromium oxide (Cr ₂ O ₃ ), and aluminum nitride (AlN), and 5 μm. The result which compared the oxidation amount of the metal bond layer when it uses for the oxidation test in air | atmosphere at 1000 degreeC x 500 h about the sample formed by thickness of this is shown.

  As shown in FIG. 8, the oxidation amounts of aluminum oxide, chromium oxide, and aluminum nitride were reduced from 2/3 to 1/2 as compared with zirconium oxide alone. Therefore, even in the thermal barrier coating material of the present embodiment in which the low oxygen defect concentration compound layer 4 is formed on the surface side through the intermediate metal layer 6, oxides and nitrides are directly interposed between the zirconium oxide layers 3 and 5. As with the formed first embodiment, it has been revealed that an excellent oxidation resistance effect is exhibited. In particular, those formed with aluminum oxide showed the most excellent oxidation resistance and were found to be optimal for the practice of the present invention.

  Also in this embodiment, as in the first embodiment, physical vapor deposition, chemical vapor deposition, sputtering, thermal spraying, as a method for forming a metal / alloy layer for forming the low oxygen defect concentration compound layer 4, A spin coating method or the like was tried, but any method could form a layer. However, in the thermal spraying method, the defect control in the layer is difficult and the effect is not obtained so much as in the above, whereas the EB-PVD method, which is a kind of physical vapor deposition, the sputtering method, and the slurry method. In both cases, the amount of oxidation of the metal bonding layer could be greatly reduced.

  As shown in the first and second embodiments above, the thermal barrier coating material of the present invention that imparts a shielding effect against oxygen intrusion to the zirconium oxide layer includes various high-temperature coatings that currently use thermal barrier coatings. It can be applied to all parts. That is, dynamic / static blade / combustor inner surface / transition piece / shroud segment in power generation / marine gas turbine, dynamic / static blade / combustor inner surface / transition piece in jet engine, cylinder inner surface / piston outer surface / valve in diesel engine, etc. Can be applied to.

Sectional drawing which shows the structure of the thermal barrier coating material by 1st embodiment of this invention. Explanatory drawing which shows the oxygen potential change in the film | membrane in 1st embodiment of this invention. The graph which shows the relationship between the thickness of the intermediate compound layer in 1st embodiment of this invention, and the oxidation amount of a metal bond layer. The graph which shows the relationship between the thickness of the intermediate compound layer in 1st embodiment of this invention, and peeling lifetime. The graph which shows the comparison of the oxidation amount of the metal bond layer in the various compound layers in 1st embodiment of this invention. Sectional drawing which shows the structure of the thermal-insulation coating material by 2nd Embodiment of this invention. The flowchart which shows the manufacturing process of the thermal barrier coating material by 2nd Embodiment of this invention. The graph which shows the comparison of the oxidation amount when forming a compound layer from the intermediate metal layer by 2nd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Base material, 2 ... Metal bonding layer, 3 ... Thermal insulation layer (base material side zirconium oxide layer), 4 ... Low oxygen defect concentration compound layer (oxidation suppression layer), 5 ... Thermal insulation layer (outermost surface side zirconium) Oxide layer), 6 ... intermediate metal layer.

Claims (8)

A surface of a base material made of an alloy containing nickel, cobalt, or iron as a main component, and a heat shielding layer made of zirconium oxide, containing at least one of nickel, cobalt, and iron, and chromium, aluminum, yttrium A thermal barrier coating material formed through a metal bond layer of an alloy composed of at least one element, wherein an oxygen defect concentration is present in the thermal barrier layer or at an interface between the thermal barrier layer and the metal bond layer. A thermal barrier coating material comprising at least one oxidation-inhibiting layer made of a compound lower than zirconium oxide. On the surface side of a base material made of an alloy containing nickel, cobalt or iron as a main component, a heat shielding layer made of two or more zirconium oxides contains at least one of nickel, cobalt and iron, and chromium , Aluminum, yttrium, an alloy composed of at least one element, and a thermal barrier coating material formed via an intermediate metal layer, respectively, in the thermal barrier layer on the outermost surface side or on the outermost surface side A thermal barrier coating material, wherein an oxidation inhibiting layer made of a compound having an oxygen defect concentration lower than that of zirconium oxide is formed at an interface between the thermal barrier layer and the intermediate metal layer inside thereof. 3. The oxidation inhibiting layer is mainly composed of a compound selected from aluminum oxide, chromium oxide, titanium oxide, silicon carbide, titanium nitride, chromium nitride, and aluminum nitride. The thermal barrier coating material described. The thermal barrier coating material according to claim 1 or 2, wherein the oxidation inhibiting layer has a thickness of 10 µm or less. The thermal barrier coating material according to claim 1 or 2, wherein the oxidation-inhibiting layer is mainly made of aluminum oxide, chromium oxide or titanium oxide, wherein As a step of forming a deterrent layer, a step of previously forming a metal / alloy layer containing at least one element selected from aluminum, chromium, and titanium on the surface of the metal bond layer or the intermediate metal layer; and And a step of forming the metal / alloy layer as an oxide layer by heat treatment in the atmosphere or in a low vacuum performed at the time of forming the zirconium oxide, or a method for producing the thermal barrier coating material. The thermal barrier coating material according to claim 1 or 2, wherein the oxidation-suppressing layer is mainly made of aluminum nitride, chromium nitride or titanium nitride, wherein The step of forming the deterring layer includes a step of previously forming a metal / alloy layer containing at least one element selected from aluminum, chromium and titanium on the surface of the metal bond layer or intermediate metal layer, and a heat treatment in a nitrogen atmosphere. And a step of using the metal / alloy layer as a nitride layer. As the step of previously forming the metal / alloy layer on the surface of the metal bonding layer or intermediate metal layer, any one of physical vapor deposition, chemical vapor deposition, sputtering, thermal spraying, spin coating, and slurry is used. A method for producing a thermal barrier coating material according to claim 5 or 6. A high-temperature component using the thermal barrier coating material according to any one of claims 1 to 4.

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