WO2003038152A1 - Revetement en alliage re pour barriere de diffusion - Google Patents
Revetement en alliage re pour barriere de diffusion Download PDFInfo
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- WO2003038152A1 WO2003038152A1 PCT/JP2002/009479 JP0209479W WO03038152A1 WO 2003038152 A1 WO2003038152 A1 WO 2003038152A1 JP 0209479 W JP0209479 W JP 0209479W WO 03038152 A1 WO03038152 A1 WO 03038152A1
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/325—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with layers graded in composition or in physical properties
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
- C23C28/3455—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer with a refractory ceramic layer, e.g. refractory metal oxide, ZrO2, rare earth oxides or a thermal barrier system comprising at least one refractory oxide layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
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- 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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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12944—Ni-base component
Definitions
- the present invention relates to a technology for extending the life of high-temperature equipment members, such as gas turbine blades, jet engine turbine blades, and boiler heat transfer tubes.
- high-temperature equipment members such as gas turbine blades, jet engine turbine blades, and boiler heat transfer tubes.
- TBC Thermal barrier coating
- TBC thermal barrier coatings
- Ceramics have a large difference in the coefficient of thermal expansion from the base metal, and easily peel off at the TBC / base metal interface. Therefore, an alloy layer called an undercoat (or bond coat) is usually placed between the ceramic layer and the base metal. Is used to improve the adhesion. However, in an ultra-high temperature environment of about 800 to 1200 ° C, the undercoat reacts with the base material and deteriorates, and the oxide layer grows thickly on the undercoat surface, causing the ceramic layer to peel off. I do. For this reason, a major problem is that the service life of equipment members is as short as several months.
- A1 (or Cr, Si) diffusion and infiltration treatment In order to improve the corrosion resistance, a diffusion infiltration treatment such as A1 or Cr or Si is applied.
- a diffusion infiltration treatment such as A1 or Cr or Si is applied.
- diffusion of elements contributing to corrosion resistance is extremely fast and reactivity is high, so a stable protective film is maintained for a long time.
- the consumption rate of elements such as Cr and A1 forming the protective film is high, so stable protection is achieved.
- a major problem is that the functional film cannot be maintained for a long time, and the equipment life is extremely short.
- Thermal spraying of high Ni-high Cr alloys may be applied to improve corrosion resistance.
- Japanese Unexamined Patent Publication No. 11-61439 discloses a TBC system in which Re is added to a TBC undercoat in an amount of 12% by weight or less (several% in atomic composition).
- Japanese Patent Application Laid-Open No. 2000-511236 discloses, as “a structural component having a base made of a superalloy and a layered structure provided thereon and a method of manufacturing the same,” 35 to 60% by weight of Re (atomic composition). Has proposed a TBC undercoat containing about 15% to 30%).
- Re in this case is not described in detail, and the effect is not clear.
- U.S. Patent No. 6,299,986 describes Re5.0-7.0 ° /. 4wt on Ni-base superalloy substrate including /. It describes that a barrier film containing the following Re is formed.
- a Re-containing protective coating containing 22 to 50 wt% of Cr is described.
- JP-A-9-143667 discloses that pure Re or Mo or W is contained.
- a method for manufacturing a high temperature member made of a Re alloy is disclosed. This is a method of manufacturing a structural member of Re or Re alloy, and is intended to use thin Re or Re alloy alone. Disclosure of the invention
- the present inventors have been conducting research and development on a method of using Re or a Re alloy as a diffusion barrier.
- Re (or Ir, Rh, Pt, ⁇
- An alloy layer is coated on the surface of the substrate or inserted between the substrate and the TBC layer to provide an excellent diffusion barrier layer.
- concentration is low (at an atomic composition of less than 30 ° / .Re) or when a stable alloy phase with Re is not formed at high temperatures, such as in the case of Re-Ni binary alloy, the Re-rich phase and other elements Phase separation into the (eg, Ni) rich phase occurs, and the function as a diffusion barrier decreases.
- the present inventors can form an alloy phase that is stable at high temperatures by specifying the alloy elements in the Re alloy film applied to the base material and increasing the Re concentration in the alloy film. It has been found that a function as an excellent diffusion barrier layer can be obtained. The present invention provides this excellent diffusion barrier layer.
- the present invention contains Re in an atomic composition of 30% or more and less than 90%, and a total amount of at least one kind selected from Cr, Mo, and W of 5 ° / 0 or more and less than 60%, excluding unavoidable impurities.
- Re-alloy coating for diffusion barrier applied to a base material with at least one selected from the group consisting of Ni, Fe, and Co, which can impart excellent heat and corrosion resistance to the base material
- the present invention is the alloy film for a diffusion barrier layer applied to the above-mentioned substrate, wherein the alloy film has a structure in which a stress relaxation layer is inserted between the substrate and the alloy film.
- This structure suppresses cracking of the coating due to the difference in thermal expansion between the base material and the alloy coating. It is possible to maintain the gold coating as a continuous layer. This makes it possible to further enhance the excellent heat and corrosion resistance of the alloy film.
- the present invention mainly includes at least one of Al, Si, and Cr in a diffusion barrier alloy film or a diffusion barrier alloy film in which a stress relaxation layer containing Re is inserted between the diffusion barrier alloy film and the substrate.
- An alloy film for a diffusion barrier layer applied to the above-mentioned base material having a structure in which a diffusion infiltration layer is laminated. This structure allows elements that reduce corrosion resistance (eg, Ti, Nb, Ta, etc.) to diffuse from the base material to the diffusion-penetrating layer, and to reduce the phase stability of the base material (eg, Al, Si, It is possible to suppress the diffusion of Cr) from the diffusion permeation layer to the substrate. This makes it possible to maintain excellent oxidation resistance and substrate strength for a longer time.
- the present invention is a film having a structure in which a ceramic for heat shielding is laminated on the alloy film for diffusion barrier described above, thereby enabling the use of the material at a higher temperature.
- FIG. 1 shows the phase diagram of Re-(Cr, Mo, W)-(Ni, Fe, Co) alloy at high temperature and the alloy composition of the Re alloy film for the diffusion barrier of the present invention compared with the previous case.
- FIG. 2 is a schematic diagram showing a cross-sectional structure of a Ni-based alloy of an example.
- FIG. 3 is a schematic diagram showing a cross-sectional structure of the Ni-based alloys of Comparative Examples 1 to 4.
- FIG. 4 is a schematic diagram showing a cross-sectional structure after oxidizing the Ni-based alloy of Example 1 in the air at 1100 ° C. for one month.
- FIG. 5 is a schematic diagram showing a cross-sectional structure after oxidizing the Ni-based alloys of Comparative Examples 1 to 4 in the air at 1100 ° C. for one month.
- Fig. 6 shows that the Ni-based alloys of Example 1 and Comparative Examples 1 to 4 were acidified for 1 month at 1100 ° C in air.
- 5 is a graph showing the thickness of an oxide scale formed on the surface by the conversion.
- the present invention contains at least 30% or less and less than 90% of Re in atomic composition and at least one of at least one selected from Cr, Mo and W in an amount of 5% or more and less than 60%.
- This is a Re alloy coating for a diffusion barrier applied to a substrate made of at least one selected from Ni, Fe, and Co.
- Re must be at least one element selected from Cr, Mo, and W and at least one element selected from Ni, Co, and Fe. It must be alloyed with the element.
- Re has an atomic composition of 30% or more and less than 90%, the total amount of at least one element selected from Cr, Mo, and W is 5% or more and less than 60%, and the remainder excluding unavoidable impurities. It must be at least one selected from Ni, Fe, and Co.
- Re is less than 30%, the ratio of the alloy element-rich layer other than Re increases at high temperatures, and the layer does not function sufficiently as a diffusion barrier layer.
- Re is more than 90%, it becomes Re single phase.
- the Re single phase unlike the Re alloy phase, is prone to cracks under thermal shock and has low adhesion to the substrate, so it cannot be stably present on the substrate surface as a long-term diffusion barrier layer . Therefore, the Re concentration was limited to 30% or more and less than 90% in atomic composition. More preferably, Re is 40% or more and 70% or less in atomic composition.
- the ⁇ phase exhibits a function as an excellent diffusion barrier layer. If the total amount of Cr, Mo, and W is less than 5%, Re becomes a single phase and no ⁇ phase is formed. On the other hand, above 60%, Many Cr, Mo or W rich phases are generated, and the function as a diffusion barrier layer is reduced. Therefore, the total amount of Cr, Mo, and W was limited to 5% or more and less than 60 ° / o . More preferably, the total amount of Cr, Mo, and W in the atomic composition is 20% or more and 50% or less.
- Ni, Fe, and Co When Ni, Fe, and Co are alloyed with Re-Cr (or Mo, W) alloy, they have the effect of expanding the stable region of the ⁇ phase.
- Re-Cr (or Mo, W) alloy the Re concentration at which the ⁇ phase becomes stable is about 50 to 70 atomic%, whereas when alloyed with Ni, Fe, and Co, the ⁇ phase becomes stable.
- the area is about 30 to 80 atoms.
- the alloying element preferably contains Ni if the substrate is a Ni-based alloy, Fe if the substrate is Fe-based, and Co if the substrate is Co-based.
- the alloy composition range effective as a diffusion barrier layer is shown in FIG. 1 with the phase diagram of the Re- (Cr, Mo, W)-(Ni, Fe, Co) alloy.
- the alloy composition range of the previous case is also shown.
- the alloy coating of Japanese Patent Application Laid-Open No. 2000-511236, which is a prior example has a composition range of a Cr-rich phase
- JP-A-11-61439 has a composition range of a Ni-rich phase, and does not serve as a diffusion barrier layer. .
- JP-A-9-143667 does not contain Ni, Fe, and Co, cracks are likely to occur due to thermal shock, and adhesion to a substrate is not good.
- this film is for use alone without coating on a substrate. Therefore, when this film is used in a state of being coated on a substrate, the film is easily broken, and the heat resistance and corrosion resistance of the substrate are impaired.
- the alloy film of the present invention has an excellent diffusion barrier layer as shown in FIG. It has a composition centered on the ⁇ -phase single-phase region and has a function as an excellent diffusion barrier layer.
- the alloy film of the present invention contains Ni, Fe, or Co, which is the main component of the heat-resistant alloy used for the base material, it has good adhesion to the base material and can be used for a long time while applied to the base material surface .
- This Re alloy film can be preferably formed by magnetron sputtering, but a similar alloy film can be formed by physical vapor deposition, chemical vapor deposition, or thermal spraying.
- the method is not limited to a method of forming a Re alloy film having a desired alloy composition by these film forming methods, and a desired Re alloy film may be formed by diffusion of alloy components of a base material by heat treatment.
- a Re-Cr alloy film may be formed by any of the coating methods described above, and the Re-Cr-Ni alloy layer may be formed by diffusion of Ni in the base material by heating in the diffusion and infiltration treatment.
- the stress relaxation layer When a stress relaxation layer is inserted between the base material and the alloy film, the stress relaxation layer has a Re concentration of about 5 to 20 atoms, for example, more than that of the diffusion barrier layer. /. It is desirable to use a Re- (Cr, Mo, W)-(Ni, Fe, Fe) alloy layer which is low and contains about 5 to 20 atomic% of Ni or Fe or Co. With this structure, it is possible to suppress cracking of the coating due to the difference in thermal expansion between the base material and the alloy coating, and to maintain the alloy coating as a continuous layer, thereby improving the excellent heat resistance and corrosion resistance of the alloy coating. It is possible to further draw out.
- a known method such as a pack method or a CVD method can be appropriately adopted.
- a metal layer made of at least one of Ni, Fe, Co, etc. is coated on the Re-Cr alloy film as a receiving layer of Al, Si, or Cr to be diffused, and the Al, Si, or An alloy layer of Cr and these metals is formed.
- ceramic task is, Zr0 2, Ca0, Mg0, Si0 2, AI2O3 Les Shi desirable to contain at least 1 or more. This reduces the temperature of the internal alloy layer, suppresses oxide growth on the surface of the alloy film, suppresses diffusion between the alloy film and the substrate, and stabilizes the structure of the alloy film and the substrate. Can be maintained for a longer time.
- Ni-based alloy Inconel 718 (Ni-19Cr-19% Fe-5 ° / oNb-3% Mo-0.9 ° /. Ti-0.4 ° / ⁇ 1 (% by weight)) was coated with an 80 atomic% 1 ⁇ -20 atomic% alloy coating, then plated with Ni, and further subjected to aluminum diffusion and penetration treatment.
- the alloy film has 80 atoms. / a ORe- 20 atomic 0/0 Ni alloy as a target, after coating the substrate surface by magnetron port down sputtering, vacuum was formed by homogenizing heat treatment for 5 hours coating at 1 100 ° C.
- the aluminum diffusion treatment is performed by immersing the base material coated with Re alloy and Ni plating in a mixed powder of Ni-50 atomic% A1 alloy powder + A1203, and treating at 1000 ° C for 5 hours in vacuum. By doing I went.
- Fig. 2 shows the cross-sectional structure of the Ni-based alloy after the treatment.
- Table 1 shows the results of the composition analysis of each point in Fig. 2 using an electron beam micro analyzer (EPA).
- EPA electron beam micro analyzer
- the 80 atomic% 1 ⁇ -20 atomic% Ni alloy film is converted to 47.4% Re-24. 6% Cr-15. 2% Fe-4.3% Mo (47.4% Re-28.9% (Cr, Mo) -23.4% (Ni, Fe)) alloy film, that is, ⁇ phase composition (See Fig. 1).
- FIG. 3 (a) shows a solid Ni-based alloy (Inconel 718).
- FIG. 3 (b) shows a Ni-based alloy (Inconel 718) treated only by aluminum diffusion and infiltration. )
- FIG. 3 (c) shows 20 atoms. / oRe-60 atoms o / oNi-20 atoms 0 /.
- Ni-based alloy (Inconel 718) which was coated with a Cr alloy film and then subjected to Ni plating and aluminum diffusion and infiltration treatment.
- FIG. 3 (d) shows the 20 atomic% ⁇ - ⁇ atomic% Cr alloy. After coating, Ni plating and Al plating The cross-sectional structures of the Ni-based alloy (Inconel 718) subjected to the diffusion and infiltration treatment are shown.
- the Re alloy film was 20 atom% 1 ⁇ -
- Example 4 a Ni-20 atomic% alloy was formed by coating the alloy with 20 atomic% 1 ⁇ -80 atomic% (:; 1: heat treating at 1100 ° C for 5 hours in vacuum after coating the alloy. Ni plating and aluminum The diffusion and penetration conditions were the same as in Example 1.
- Table 2 is a table showing the results of composition analysis at various points in the cross section of the Ni-based alloy of Comparative Example 1. (1) to (3) in the table correspond to (1) to (3) in FIG. 3 (a).
- Table 3 is a table showing the composition analysis results at each point of the Ni-base alloy section of Comparative Example 2 (in the table (1) to (5), FIG. 3 (b) in the (1) - ( Corresponds to 5).
- Table 4 is a table showing the composition analysis results at each point of the Ni-base alloy section of Comparative Example 3 (in the table (1) to (5), FIG. 3 (c) of (1) - ( Corresponds to 5).
- Table 5 is a table showing the results of composition analysis at various points in the cross section of the Ni-based alloy of Comparative Example 4. (1) to (5) in the table are (1) to (1) in FIG. Corresponds to 5).
- the A1 concentration near the surface of the coating layer composed of the Re alloy film of Comparative Examples 2 to 4 and the Ni-Al alloy diffusion / penetration layer was about 50 atoms in all cases. /. Which is almost the same as in the first embodiment. I have. However, unlike Example 1, in all of Comparative Examples 2 to 4, it can be seen that A1 diffuses to the substrate side and Ti and Nb diffuse to the coating layer side.
- the Cr alloy film layer has an atomic composition of 10.3 ° / oRe-41.8 ° / oNi-16.9 ° / by post-treatment.
- Alloy film located in the Ni-Fe rich phase region in Fig. 1, The composition is close to the composition of the alloy disclosed in Japanese Patent Application Laid-Open No. 11-61439, which is a preceding example.
- the Cr alloy film layer has an atomic composition of 10.8% Re-9.7 Ni-65.5% Cr-5.3% Fe-l.9% Mo-1.1Nb-4 9% A1- 0.8% Ti (10.8% Re-67.4% (Cr, Mo) -15.0% (Ni, Fe) -4.9% A1-1.9% (Nb, Ti))
- FIGS. 4 and 5 (a) to (d) Sectional structures after oxidizing the alloys of Example 1 and Comparative Examples 1 to 4 in the air at 1100 ° C. for one month are shown in FIGS. 4 and 5 (a) to (d).
- FIG. 2 corresponds to FIG. 4
- FIGS. 3 (to (d) correspond to FIGS. 5 (a) to (d), respectively.
- Table 6 is a table showing the results of composition analysis of the Ni-based alloy of Example 1 at various points on the cross section of the test piece after oxidation. (1) to (6) in the table correspond to (1) to (6) in FIG. (Table 6)
- Table 7 is a table showing the results of compositional analysis of the Ni-based alloy of Comparative Example 1 at various points on the cross section of the test piece after oxidation. (1;) to in the table correspond to (1) to (6) in FIG. 5 (a).
- Table 8 is a table showing the results of composition analysis at various points on the cross section of the test piece after oxidation of the Ni-based alloy of Comparative Example 2. (1) to (6) in the table correspond to (1) to (6) in FIG. 5 (b). (Table 8)
- Table 9 is a table showing the results of composition analysis of the Ni-based alloy of Comparative Example 3 at various points on the cross section of the test piece after oxidation. (H) to ( 6 ) in the table correspond to (1) to (6) in FIG. 5 (c). (Table 9)
- Table 10 is a table showing the results of composition analysis of the Ni-based alloy of Comparative Example 4 at various points on the cross section of the test piece after oxidation.
- (1) to (6) in the table correspond to (1) to (6) in FIG. 5 (d). Further, FIG. 6 shows the thickness of the oxide scale formed on these surfaces. (Table 10)
- Example 1 to produce a thin, dense oxide scale consisting Al 2 0 3 containing little other elements about 2 ⁇ ⁇ the coating layer surface, peeling of the film was observed.
- diffusion of other elements for example, Ti, Nb, etc.
- A1 concentration in the diffusion permeation layer was maintained at about 50%, almost the same as before oxidation, and the composition of the base material did not differ much from that before oxidation.
- the Re alloy diffusion barrier layer also had the same composition as before oxidation.
- the oxidation results of Comparative Examples 1 to 3 were as follows.
- a solid Ni-based alloy ((a), Comparative Example 1) has two layers of oxide scale, an outer layer composed mainly of Ni, Fe, and Cr, and an inner layer composed mainly of Cr, and a substrate. An internal oxide formed.
- the oxide scale was as thick as ⁇ or more, and many films were peeled off.
- the Ni-based alloy (b) subjected to only the aluminum diffusion and infiltration treatment in Comparative Example 2 produced an oxide scale of about 15 m containing Ni, Al, and Fe as main components. It was observed.
- the A1 concentration in the Ni-A1 diffusion / penetration layer which was about 50% before oxidation, decreased to about 20% after oxidation. In other words, because of the high oxidation rate, the consumption rate of A1 is high. It can be seen that the Al concentration decreased due to the diffusion into the base material.
- Ni-based alloy (c) subjected to the aluminum diffusion and infiltration treatment had a smaller amount of film peeling compared to Comparative Examples 1 and 2, but it had a thickness of about ll im and was mainly composed of Al, Ni, and Fe. An oxide scale containing Nb and Nb was produced.
- oxide scale thicknesses differ by a factor of 5 over the same period, their lifetimes will be calculated by a factor of 25. Therefore, the difference in oxide scale thickness from Example 1 can be said to be a large difference.
- the A1 concentration in the Ni-A1 diffusion / penetration layer which was almost 50% before oxidation, decreased to about 23% after oxidation. Furthermore, the A1 concentration near the substrate surface increased to about 9%. From these results, the low Re concentration is 10.3 atomic% Re-19.1 atomic% (Cr, Mo)-56.9 atomic% (Ni, Fe)-10.1 atoms. /. Al-3.6 atoms. /. Even when the (Nb, Ti) alloy film is coated, during oxidation at 1100 ° C, Ti and Nb diffuse from the substrate to the coating layer, and A1 diffuses from the Ni-Al diffusion / penetration layer to the substrate. You can see that.
- the A1 concentration in the Ni-A1 diffusion and infiltration layer which was close to 50% before oxidation, decreased to about 24% after oxidation. Furthermore, the A1 concentration near the substrate surface increased to about 7%. Based on these results, the low Re concentration is 10.8 atomic% Re-67.4 atoms. /. (Cr, Mo)-15.0 at% (Ni, Fe)-4.9 at% A1-1.9 at% (Nb, Ti) , Ti and Nb Indicates that A1 diffuses from the substrate to the coating layer, and A1 diffuses from the Ni-A1 diffusion and penetration layer to the substrate.
- Example 1 (47.4 atomic ° /. -28.9 atomic% ((, 3 ⁇ 4 0 ) -23.4 atomic% (, alloy film)) which is an example of the product of the present invention is 1100 ° It has been shown to perform well as a diffusion barrier layer against C / one month oxidation, and to provide excellent oxidation resistance to the base material.
- the Ni-based alloy treated only, and the Ni-based alloy coated with a low-concentration Re alloy film + aluminum diffusion / penetration layer had almost the same A1 concentration on the coating surface before oxidation as in Example 1.
- the total amount of at least one element selected from 30% or more and less than 90% in atomic composition, Cr, Mo, and W is 5 ° /. More than less than 60%, excluding unavoidable impurities, the remainder is at least one selected from Ni, Fe and Co. (Or inserted between the base material and the TBC layer), it is possible to provide equipment members with excellent heat resistance and corrosion resistance, and to extend the life of the equipment significantly compared to the conventional example. it can.
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- Inorganic Chemistry (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Mechanical Engineering (AREA)
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/494,014 US7205053B2 (en) | 2001-10-31 | 2002-09-13 | Re alloy coating for diffusion barrier |
EP02765561A EP1449937B1 (en) | 2001-10-31 | 2002-09-13 | Re ALLOY COATING FOR DIFFUSION BARRIER |
DE60238076T DE60238076D1 (de) | 2001-10-31 | 2002-09-13 | ÜBERZUG AUS Re-LEGIERUNG FÜR DIFFUSIONSBARRIERE |
JP2003540413A JP3857690B2 (ja) | 2001-10-31 | 2002-09-13 | 拡散障壁用Re合金皮膜 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-335914 | 2001-10-31 | ||
JP2001335914 | 2001-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003038152A1 true WO2003038152A1 (fr) | 2003-05-08 |
Family
ID=19150837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/009479 WO2003038152A1 (fr) | 2001-10-31 | 2002-09-13 | Revetement en alliage re pour barriere de diffusion |
Country Status (5)
Country | Link |
---|---|
US (1) | US7205053B2 (ja) |
EP (1) | EP1449937B1 (ja) |
JP (1) | JP3857690B2 (ja) |
DE (1) | DE60238076D1 (ja) |
WO (1) | WO2003038152A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005068685A1 (ja) * | 2004-01-15 | 2005-07-28 | Ebara Corporation | 拡散バリヤ用合金皮膜及びその製造方法、並びに高温装置部材 |
US7150924B2 (en) * | 2002-07-01 | 2006-12-19 | Agency Of Industrial Science And Technology | Metal based resistance heating element and method for preparation therefor |
WO2008059971A1 (fr) * | 2006-11-16 | 2008-05-22 | National University Corporation Hokkaido University | Film de revêtement en alliage multicouche, élément métallique résistant à la chaleur muni de ce film de revêtement et procédé de fabrication d'un film de revêtement en alliage multicouche |
CN117265531A (zh) * | 2023-09-13 | 2023-12-22 | 烟台大学 | 包含梯度结构镍-铼内层的耐熔盐腐蚀涂层及其制备方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9719353B2 (en) | 2011-04-13 | 2017-08-01 | Rolls-Royce Corporation | Interfacial diffusion barrier layer including iridium on a metallic substrate |
US10266958B2 (en) * | 2013-12-24 | 2019-04-23 | United Technologies Corporation | Hot corrosion-protected articles and manufacture methods |
EP2918705B1 (en) | 2014-03-12 | 2017-05-03 | Rolls-Royce Corporation | Coating including diffusion barrier layer including iridium and oxide layer and method of coating |
GB201610768D0 (en) | 2016-06-21 | 2016-08-03 | Rolls Royce Plc | Gas turbine engine component with protective coating |
WO2022208861A1 (ja) * | 2021-04-02 | 2022-10-06 | 株式会社ディ・ビー・シー・システム研究所 | 耐熱合金部材およびその製造方法ならびに高温装置およびその製造方法 |
Citations (1)
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US5993980A (en) * | 1994-10-14 | 1999-11-30 | Siemens Aktiengesellschaft | Protective coating for protecting a component from corrosion, oxidation and excessive thermal stress, process for producing the coating and gas turbine component |
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DE3926479A1 (de) | 1989-08-10 | 1991-02-14 | Siemens Ag | Rheniumhaltige schutzbeschichtung, mit grosser korrosions- und/oder oxidationsbestaendigkeit |
JPH09143667A (ja) * | 1995-11-21 | 1997-06-03 | Mitsubishi Heavy Ind Ltd | Re製高温部材の製造方法 |
DE19621763A1 (de) | 1996-05-30 | 1997-12-04 | Siemens Ag | Erzeugnis mit einem Grundkörper aus einer Superlegierung und einem darauf befindlichen Schichtsystem sowie Verfahren zu seiner Herstellung |
JP3281842B2 (ja) * | 1997-08-15 | 2002-05-13 | 三菱重工業株式会社 | ガスタービン翼への耐食性表面処理方法及びその動・静翼 |
GB9724844D0 (en) * | 1997-11-26 | 1998-01-21 | Rolls Royce Plc | A coated superalloy article and a method of coating a superalloy article |
US6306524B1 (en) * | 1999-03-24 | 2001-10-23 | General Electric Company | Diffusion barrier layer |
US6746782B2 (en) * | 2001-06-11 | 2004-06-08 | General Electric Company | Diffusion barrier coatings, and related articles and processes |
-
2002
- 2002-09-13 DE DE60238076T patent/DE60238076D1/de not_active Expired - Lifetime
- 2002-09-13 US US10/494,014 patent/US7205053B2/en not_active Expired - Fee Related
- 2002-09-13 EP EP02765561A patent/EP1449937B1/en not_active Expired - Lifetime
- 2002-09-13 WO PCT/JP2002/009479 patent/WO2003038152A1/ja active Application Filing
- 2002-09-13 JP JP2003540413A patent/JP3857690B2/ja not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5993980A (en) * | 1994-10-14 | 1999-11-30 | Siemens Aktiengesellschaft | Protective coating for protecting a component from corrosion, oxidation and excessive thermal stress, process for producing the coating and gas turbine component |
Non-Patent Citations (1)
Title |
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See also references of EP1449937A4 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7150924B2 (en) * | 2002-07-01 | 2006-12-19 | Agency Of Industrial Science And Technology | Metal based resistance heating element and method for preparation therefor |
WO2005068685A1 (ja) * | 2004-01-15 | 2005-07-28 | Ebara Corporation | 拡散バリヤ用合金皮膜及びその製造方法、並びに高温装置部材 |
JPWO2005068685A1 (ja) * | 2004-01-15 | 2007-09-06 | 株式会社荏原製作所 | 拡散バリヤ用合金皮膜及びその製造方法、並びに高温装置部材 |
US7851070B2 (en) | 2004-01-15 | 2010-12-14 | National University Corporation Hokkaido University | Diffusion barrier alloy film and high-temperature apparatus member |
JP4753720B2 (ja) * | 2004-01-15 | 2011-08-24 | 株式会社荏原製作所 | 拡散バリヤ用合金皮膜及びその製造方法、並びに高温装置部材 |
WO2008059971A1 (fr) * | 2006-11-16 | 2008-05-22 | National University Corporation Hokkaido University | Film de revêtement en alliage multicouche, élément métallique résistant à la chaleur muni de ce film de revêtement et procédé de fabrication d'un film de revêtement en alliage multicouche |
US8133595B2 (en) | 2006-11-16 | 2012-03-13 | National University Corporation Hokkaido University | Multilayer alloy coating film, heat-resistant metal member having the same, and method for producing multilayer alloy coating film |
JP5182669B2 (ja) * | 2006-11-16 | 2013-04-17 | 国立大学法人北海道大学 | 多層合金皮膜、それを有する耐熱性金属部材および多層合金皮膜の製造方法 |
CN117265531A (zh) * | 2023-09-13 | 2023-12-22 | 烟台大学 | 包含梯度结构镍-铼内层的耐熔盐腐蚀涂层及其制备方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1449937B1 (en) | 2010-10-20 |
JP3857690B2 (ja) | 2006-12-13 |
JPWO2003038152A1 (ja) | 2005-02-24 |
US7205053B2 (en) | 2007-04-17 |
DE60238076D1 (de) | 2010-12-02 |
EP1449937A1 (en) | 2004-08-25 |
US20050064227A1 (en) | 2005-03-24 |
EP1449937A4 (en) | 2004-11-24 |
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