JP4495054B2 - 回転機械の部品及び回転機械 - Google Patents
回転機械の部品及び回転機械 Download PDFInfo
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- JP4495054B2 JP4495054B2 JP2005255480A JP2005255480A JP4495054B2 JP 4495054 B2 JP4495054 B2 JP 4495054B2 JP 2005255480 A JP2005255480 A JP 2005255480A JP 2005255480 A JP2005255480 A JP 2005255480A JP 4495054 B2 JP4495054 B2 JP 4495054B2
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- JP
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- Prior art keywords
- plating film
- fluororesin
- rotating machine
- plating
- particles
- Prior art date
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- 238000007747 plating Methods 0.000 claims description 225
- 239000002245 particle Substances 0.000 claims description 88
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 49
- 239000010419 fine particle Substances 0.000 claims description 30
- 239000011159 matrix material Substances 0.000 claims description 29
- 238000005121 nitriding Methods 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 22
- 229910052751 metal Inorganic materials 0.000 claims description 22
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 21
- 239000011737 fluorine Substances 0.000 claims description 21
- 229910052731 fluorine Inorganic materials 0.000 claims description 21
- 239000011347 resin Substances 0.000 claims description 20
- 229920005989 resin Polymers 0.000 claims description 20
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 12
- 229920001577 copolymer Polymers 0.000 claims description 11
- 238000009713 electroplating Methods 0.000 claims description 11
- 229920001780 ECTFE Polymers 0.000 claims description 10
- 238000007772 electroless plating Methods 0.000 claims description 10
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 9
- 239000002033 PVDF binder Substances 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 description 49
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 47
- 239000000463 material Substances 0.000 description 39
- 239000002585 base Substances 0.000 description 32
- 230000004048 modification Effects 0.000 description 27
- 238000012986 modification Methods 0.000 description 27
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 24
- 239000007789 gas Substances 0.000 description 24
- 239000000377 silicon dioxide Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 18
- 229910018104 Ni-P Inorganic materials 0.000 description 13
- 229910018536 Ni—P Inorganic materials 0.000 description 13
- 239000000758 substrate Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 8
- 238000005480 shot peening Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 6
- 230000000737 periodic effect Effects 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 230000001603 reducing effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000011882 ultra-fine particle Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for blades
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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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1646—Characteristics of the product obtained
- C23C18/165—Multilayered product
- C23C18/1653—Two or more layers with at least one layer obtained by electroless plating and one layer obtained by electroplating
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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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1655—Process features
- C23C18/1662—Use of incorporated material in the solution or dispersion, e.g. particles, whiskers, wires
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
-
- 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
- C23C28/02—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 only coatings only including layers of metallic material
- C23C28/027—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 only coatings only including layers of metallic material including at least one metal matrix material comprising a mixture of at least two metals or metal phases or metal matrix composites, e.g. metal matrix with embedded inorganic hard particles, CERMET, MMC.
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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
- C23C28/324—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 matrix material layer comprising a mixture of at least two metals or metal phases or a metal-matrix material with hard embedded particles, e.g. WC-Me
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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
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
- C25D15/02—Combined electrolytic and electrophoretic processes with charged materials
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/10—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/30—Preventing corrosion or unwanted deposits in gas-swept spaces
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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
- Y10T428/12486—Laterally noncoextensive components [e.g., embedded, etc.]
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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
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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
- Y10T428/12993—Surface feature [e.g., rough, mirror]
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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
- Y10T428/31504—Composite [nonstructural laminate]
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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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
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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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Electrochemistry (AREA)
- Dispersion Chemistry (AREA)
- Composite Materials (AREA)
- Chemically Coating (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
さらに、この回転機械の部品では、フッ素樹脂含有めっき皮膜のめっきマトリックスに、Ni又はNi基の金属を用いる。これにより、耐腐食性を向上させることができる。
前記フッ素樹脂粒子は、回転機械の回転に伴い前記めっき皮膜と接触する気体に含まれる粒子が前記めっき皮膜に付着することを抑制するために、平面視にて、10%以上40%以下の面積の割合で前記めっきマトリックスの表面から露出すると共に、前記めっきマトリックスは、ニッケルまたは任意のニッケルベース金属から成ることを特徴とする。
さらに、この回転機械の部品では、フッ素樹脂含有めっき皮膜のめっきマトリックスに、Ni又はNi基の金属を用いる。これにより、耐腐食性を向上させることができる。
[H2PO2]-+H2O→H[HPO3]-+2H・・・(1)
Ni+++2H→NiO+2H+・・・(2)
図6−1、図6−2は、この実施例の第1変形例に係る動翼の表面を示す模式図である。この変形例は、上記実施例と略同様の構成であるが、めっき皮膜を成膜する動翼の表面に、疲労強度を向上させる表面改質処理を施した点が異なる。他の構成は上記実施例と同様なので、説明を省略する。なお、上記実施例の構成は、適宜この変形例に適用できる。
図7は、この実施例の第2変形例に係る動翼の表面を示す模式図である。この変形例は、上記実施例と略同様の構成であるが、フッ素樹脂含有めっき皮膜の表面に、さらに、日本カニゼン(株)製カニフロン(登録商標)用フッ素粒子分散液に代表されるフッ素樹脂の皮膜を設ける点が異なる。他の構成は上記実施例と同様なので、説明を省略する。なお、上記実施例及びその変形例の構成は、適宜この変形例に適用できる。
図8は、この実施例の第3変形例に係る動翼の表面を示す模式図である。この変形例は、上記実施例と略同様の構成であるが、基材の上に中間めっき皮膜を介在させずに、直接フッ素樹脂含有めっき皮膜を成膜した点が異なる。他の構成は上記実施例と同様なので、説明を省略する。なお、上記実施例及びその変形例の構成は、適宜この変形例に適用できる。
本発明に係るめっき皮膜を成膜した試験片を作製し、粒子付着を評価した。本発明に係るフッ素樹脂含有めっき皮膜を成膜するにあたり、フッ素樹脂粒子として、PTFE及びPFAを使用し、めっきマトリックスの材料としてNi‐P、Ni‐B、Niを用いたフッ素樹脂含有めっき皮膜を、基材(SUS410J1)上に成膜した試験片を作製した。それぞれのフッ素樹脂含有めっき皮膜は、Ni‐Pの無電解めっき、Ni‐Bの無電解めっき、Niの電解めっきにより成膜した。さらに、基材の上に、フッ素樹脂を含有しない中間めっき皮膜を成膜して、その表面にフッ素樹脂含有めっき皮膜を成膜した試験片も作製した。いずれの試験片が備えるフッ素樹脂含有めっき皮膜においても、フッ素樹脂粒子表面占有率は10%以上とした。なお、フッ素樹脂粒子表面占有率は、フッ素樹脂含有めっき皮膜の表面拡大写真から求めた。
フッ素樹脂含有めっき皮膜は、次の手順により基材表面に成膜した。
(1)無電解めっき液中に界面活性剤を使用し、平均粒子径0.3μm〜0.5μmのフッ素樹脂粒子を分散させた。
(2)上記めっき液を90℃に保持し、20mm×20mm×5mmの試験片(SUS410J1)を浸漬し、フッ素樹脂含有めっき皮膜(カニフロン:登録商標)を成膜した。めっき皮膜の厚さは、フッ素樹脂含有めっき皮膜が10μmで、中間めっき皮膜(フッ素樹脂粒子を含有しないめっき皮膜)が2μmである。
(3)その後、300〜350℃で加熱処理を施した。
(4)電気めっきの場合は、上記めっき液をワット浴とし、同様にフッ素樹脂粒子を分散させ、温度50℃、電流密度5A/dm2の条件下でフッ素樹脂含有めっき皮膜を成膜した。上記試作材を供試材として、粒子付着評価試験装置により粒子付着性を評価した。
図9は、粒子付着評価試験に用いる試験装置を示す装置構成図である。この試験装置30は、上記手順によって作製した試験片36を、ドラム31に嵌め込んで、粒子付着評価試験に供する。粒子付着評価試験は、ドラム31を回転させながら、窒素(N2)ガスにより搬送されたシリカ(SiO2)の超微粒子を試験片36の表面に吹き付け、付着させる試験である。窒素ガスは、ノズル33を通って噴射され、シリカ粒子は、粒子供給装置32からノズル33の出口近傍に供給される。ドラム31の下方には、水タンク34が設置されている。水タンク34内の水は、100℃で沸騰させられており、前記試験片36に水分が供給される。また、試験片36はドラム31の内側に設置したヒーター35により加熱される。
ドラム31の回転数は10rpmとし、試験片36も、ドラム31と同じ回転数で回転する。シリカ粒子は、日本アエロジル製のフュームドシリカ(グレード50)を用いた。試験片36の加熱温度は80℃とした。また、シリカ粒子の衝突速度は300m/sec.とし、試験時間は80時間とした。
試験前後における試験片36の質量差から、シリカ粒子の付着量を測定した。それぞれの試験片の表面に付着したシリカ粒子の付着量Y(g)と、試験片の基材(SUS410J1)そのものの表面(表面粗さRz=3.5μm)に付着したシリカ粒子の付着量X(g)との比を、シリカ粒子付着倍率Zとして式(3)により算出した。
Z=Y/X・・・(3)
2 窒化層
3 クラック
10、10c、10d めっき皮膜
11 中間めっき皮膜
12 フッ素樹脂含有めっき皮膜
13P フッ素樹脂粒子
13M めっきマトリックス
14 フッ素樹脂皮膜
20 蒸気タービン
23、23a、23b、23c、23d 動翼
Claims (8)
- 動翼あるいはインペラである回転機械の部品であって、
前記動翼の翼あるいは前記インペラの翼となる部分に疲労強度を向上させるラジカル窒化処理が施されると共に、前記ラジカル窒化処理が施された部分の表面にめっき皮膜が設けられ、
前記めっき皮膜は、フッ素樹脂粒子がめっきマトリックスに含有されると共に前記フッ素樹脂粒子の一部が前記めっきマトリックスの表面から露出するフッ素樹脂含有めっき皮膜を含み、且つ、
前記フッ素樹脂粒子は、回転機械の回転に伴い前記めっき皮膜と接触する気体に含まれる粒子が前記めっき皮膜に付着することを抑制するために、平面視にて、10%以上40%以下の面積の割合で前記めっきマトリックスの表面から露出すると共に、前記めっきマトリックスは、ニッケルまたは任意のニッケルベース金属から成ることを特徴とする回転機械の部品。 - 動翼あるいはインペラである回転機械の部品であって、
前記動翼の翼あるいは前記インペラの翼となる部分に疲労強度を向上させるラジカル窒化処理が施されると共に、前記ラジカル窒化処理が施された部分の表面にめっき皮膜が設けられ、
前記めっき皮膜は、フッ素樹脂粒子がめっきマトリックスに含有されると共に前記フッ素樹脂粒子の一部が前記めっきマトリックスの表面から露出するフッ素樹脂含有めっき皮膜と、前記フッ素樹脂含有めっき皮膜と前記ラジカル窒化処理が施された部分の表面との間に設けられる、金属の中間めっき皮膜と、を含み、且つ、
前記フッ素樹脂粒子は、回転機械の回転に伴い前記めっき皮膜と接触する気体に含まれる粒子が前記めっき皮膜に付着することを抑制するために、平面視にて、10%以上40%以下の面積の割合で前記めっきマトリックスの表面から露出すると共に、前記めっきマトリックスは、ニッケルまたは任意のニッケルベース金属から成ることを特徴とする回転機械の部品。 - 前記中間めっき皮膜は、電気めっきにより成膜されることを特徴とする請求項2に記載の回転機械の部品。
- 前記中間めっき皮膜は、Niであることを特徴とする請求項2又は3に記載の回転機械の部品。
- 前記フッ素樹脂粒子は、ポリテトラフルオロエチレン(PTFE)、テトラフルオロエチレン−ヘキサフルオロプロピレン共重合体(FEP)、テトラフルオロエチレン−パーフルオロアルキルビニルエーテル共重合体(PFA)、ポリビリニデンフルオライド(PVDF)、エチレン−クロロトリフルオロエチレン共重合体(ECTFE)、エチレン−テトラフルオロエチレン共重合体(ETFE)の少なくとも1種類であることを特徴とする請求項1〜4のいずれか1項に記載の回転機械の部品。
- 前記フッ素樹脂含有めっき皮膜の表面に、ポリテトラフルオロエチレン(PTFE)、テトラフルオロエチレン−ヘキサフルオロプロピレン共重合体(FEP)、テトラフルオロエチレン−パーフルオロアルキルビニルエーテル共重合体(PFA)、ポリビリニデンフルオライド(PVDF)、エチレン−クロロトリフルオロエチレン共重合体(ECTFE)、エチレン−テトラフルオロエチレン共重合体(ETFE)の少なくとも1種類からなるフッ素樹脂皮膜が形成されることを特徴とする請求項1〜5のいずれか1項に記載の回転機械の部品。
- 前記フッ素樹脂粒子含有めっき皮膜は、無電解めっきにより成膜されることを特徴とする請求項1〜6のいずれか1項に記載の回転機械の部品。
- 請求項1〜7のいずれか1項に記載の回転機械の部品を、微粒子を含む気体が接触する回転部分に備えることを特徴とする回転機械。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100247321A1 (en) * | 2008-01-08 | 2010-09-30 | General Electric Company | Anti-fouling coatings and articles coated therewith |
JP5244495B2 (ja) | 2008-08-06 | 2013-07-24 | 三菱重工業株式会社 | 回転機械用の部品 |
US20110027576A1 (en) * | 2009-07-28 | 2011-02-03 | General Electric Company | Sealing of pinholes in electroless metal coatings |
JP2011058071A (ja) * | 2009-09-11 | 2011-03-24 | Sony Corp | 複合微粒子の製造装置、及び、複合微粒子の製造方法 |
ITCO20120015A1 (it) * | 2012-04-12 | 2013-10-13 | Nuovo Pignone Srl | Metodo per la prevenzione della corrosione e componente ottenuto mediante tale metodo |
JP6346778B2 (ja) * | 2013-04-16 | 2018-06-20 | 株式会社ベスト | フッ素樹脂粒子分散ニッケルめっき皮膜を形成するための電気めっき液、及びその電気めっき液を用いためっき皮膜の形成方法 |
JP6315093B2 (ja) * | 2014-06-25 | 2018-04-25 | 株式会社Ihi | 被膜を備えた流路部品、ガスタービン、過給機 |
JP6375238B2 (ja) * | 2015-02-05 | 2018-08-15 | 三菱日立パワーシステムズ株式会社 | 蒸気タービン及びその表面処理方法 |
KR101767443B1 (ko) * | 2016-09-02 | 2017-08-11 | 노미경 | 표면이 코팅 처리된 회전노즐과 그 제조방법 |
DE112019002603T5 (de) * | 2018-05-22 | 2021-03-18 | Teikoku Ion Co., Ltd. | Verschleißbeständiger Beschichtungsfilm, verschleißbeständiges Element, Verfahren zur Herstellung von verschleißbeständigem Beschichtungsfilm und Gleitmechanismus |
IT201900003463A1 (it) * | 2019-03-11 | 2020-09-11 | Nuovo Pignone Tecnologie Srl | Componente di turbomacchine avente un rivestimento metallico |
KR102232160B1 (ko) * | 2019-06-20 | 2021-03-25 | (주)동진금속 | 도금액 순환 기능을 갖는 무전해 Ni-P-PTFE용 도금장치 및 이를 이용한 도금방법 |
US11970779B2 (en) | 2019-07-26 | 2024-04-30 | Eni S.P.A. | Multilayered nickel-phosphorus composite |
US11225876B2 (en) * | 2019-12-19 | 2022-01-18 | Raytheon Technologies Corporation | Diffusion barrier to prevent super alloy depletion into nickel-CBN blade tip coating |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09314142A (ja) * | 1996-05-23 | 1997-12-09 | Akira Yasuda | メッキ加工の前処理脱脂工程における油分離装置 |
JP2001153063A (ja) * | 1999-11-29 | 2001-06-05 | Kohan Kogyo Kk | 溶融金属用ポンプ部品 |
JP2002242613A (ja) * | 2001-01-19 | 2002-08-28 | General Electric Co <Ge> | ガスタービンエンジンを洗浄するための方法及び装置 |
JP2002317298A (ja) * | 2001-04-17 | 2002-10-31 | Inax Corp | 撥水性サテンめっき製品及びその製造方法 |
JP2002348699A (ja) * | 2000-07-14 | 2002-12-04 | Osaka Gas Co Ltd | メッキ皮膜及びそれを用いたメッキ被覆物 |
JP2004100006A (ja) * | 2002-09-11 | 2004-04-02 | Daikin Ind Ltd | ノズル用めっき装置及びノズル |
JP2004156624A (ja) * | 2004-01-05 | 2004-06-03 | Daikin Ind Ltd | スクロール圧縮機 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3421972A (en) * | 1965-06-28 | 1969-01-14 | Koppers Co Inc | Process for directly bonding polytetrafluoroethylene to metal,adhesive composition used therefor and laminated product thereof |
DE3333121A1 (de) | 1983-09-14 | 1985-03-28 | AHC-Oberflächentechnik, Friebe & Reininghaus GmbH & Co KG, 5014 Kerpen | Dispersionsschichten |
JPS60197880A (ja) | 1984-03-19 | 1985-10-07 | Aisin Seiki Co Ltd | 複合メッキ被膜 |
DE3716935A1 (de) | 1987-05-20 | 1988-12-01 | Mtu Muenchen Gmbh | Verfahren zur herstellung von oxidations- und heissgaskorrosionsschutzschichten |
JPH0740506A (ja) | 1993-08-02 | 1995-02-10 | Nippon Futsuso Kogyo Kk | 金属表面の腐食防止コーティング構成と腐食防止コーティング方法 |
JPH07247949A (ja) * | 1994-03-14 | 1995-09-26 | Hiroshi Imamura | ロータリベーン形エアモータ |
DE19610055C1 (de) | 1996-03-14 | 1997-04-03 | Linde Ag | Gleitbeschichtung für Zylinderlaufflächen von Kolbenmotoren und ihre Verwendung |
DE19860526A1 (de) * | 1998-12-30 | 2000-07-06 | Basf Ag | Wärmeüberträger mit verringerter Neigung, Ablagerungen zu bilden und Verfahren zu deren Herstellung |
KR20020092483A (ko) * | 2001-06-04 | 2002-12-12 | 한라공조주식회사 | 스와쉬 플레이트와 이를 이용한 압축기 |
-
2005
- 2005-09-02 JP JP2005255480A patent/JP4495054B2/ja active Active
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2006
- 2006-02-23 DE DE200610008465 patent/DE102006008465A1/de not_active Withdrawn
- 2006-02-24 US US11/360,508 patent/US7947381B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09314142A (ja) * | 1996-05-23 | 1997-12-09 | Akira Yasuda | メッキ加工の前処理脱脂工程における油分離装置 |
JP2001153063A (ja) * | 1999-11-29 | 2001-06-05 | Kohan Kogyo Kk | 溶融金属用ポンプ部品 |
JP2002348699A (ja) * | 2000-07-14 | 2002-12-04 | Osaka Gas Co Ltd | メッキ皮膜及びそれを用いたメッキ被覆物 |
JP2002242613A (ja) * | 2001-01-19 | 2002-08-28 | General Electric Co <Ge> | ガスタービンエンジンを洗浄するための方法及び装置 |
JP2002317298A (ja) * | 2001-04-17 | 2002-10-31 | Inax Corp | 撥水性サテンめっき製品及びその製造方法 |
JP2004100006A (ja) * | 2002-09-11 | 2004-04-02 | Daikin Ind Ltd | ノズル用めっき装置及びノズル |
JP2004156624A (ja) * | 2004-01-05 | 2004-06-03 | Daikin Ind Ltd | スクロール圧縮機 |
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