EP0132494B1 - Revêtement électrolytique composite - Google Patents

Revêtement électrolytique composite Download PDF

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Publication number
EP0132494B1
EP0132494B1 EP84102203A EP84102203A EP0132494B1 EP 0132494 B1 EP0132494 B1 EP 0132494B1 EP 84102203 A EP84102203 A EP 84102203A EP 84102203 A EP84102203 A EP 84102203A EP 0132494 B1 EP0132494 B1 EP 0132494B1
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EP
European Patent Office
Prior art keywords
disperse
coating
deposited
electrolyte
wear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84102203A
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German (de)
English (en)
Other versions
EP0132494A3 (en
EP0132494A2 (fr
Inventor
Martin Dr. Rer. Nat. Thoma
Paul Dipl.-Ing. Bünger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Priority to AT84102203T priority Critical patent/ATE32108T1/de
Publication of EP0132494A2 publication Critical patent/EP0132494A2/fr
Publication of EP0132494A3 publication Critical patent/EP0132494A3/de
Application granted granted Critical
Publication of EP0132494B1 publication Critical patent/EP0132494B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less

Definitions

  • the invention relates to an electrodeposited dispersion layer, in the matrix of which a disperse phase composed of Cr203 particles is incorporated, the installation rate of the disperse phase being 20% to 50%, preferably 30%, by volume of the layer material.
  • Electrodeposited dispersion layers are known in which hard material phases are embedded in a matrix.
  • GB-PS 1358 538 z. B. describes a layer with embedded chromium carbide. It has been shown that these dispersion layers are suitable as wear protection layers on parts subject to high temperatures, because they have great hardness and because electrochemical deposition permits the coating of workpieces of complex shapes.
  • the object is achieved in that in a generic dispersion layer the matrix is a cobalt oxide matrix with the oxides C 03 0 4 and CoO and in that the particle size of the disperse phase is below 10 ⁇ m.
  • the dispersion layer according to the invention is distinguished by a thinner and better adhering oxide layer than can be achieved by the oxidation of pure cobalt. This is achieved by the dispersed Cr 2 0 3 phase embedded in the layer, it being essential that the particle size of the Cr 2 0 3 phase is below 10 ⁇ m, preferably between 3 and 6 ⁇ m.
  • the oxide layers that can be achieved in this way have an extraordinarily high resistance to wear, in particular friction corrosion.
  • the invention further relates to a method for producing a dispersion layer characterized above, in which a disperse Cr 2 O 3 phase is suspended in an electrolyte containing cobalt ions.
  • a method for producing a dispersion layer characterized above in which a disperse Cr 2 O 3 phase is suspended in an electrolyte containing cobalt ions.
  • the electrolyte has a pH of 4.5 to 4.9 and preferably 50 ° C at a temperature of 40 to 60 ° C and a current density of 1 A / dm 2 to 6 A / dm 2 , preferably 3.5 A / dm 2 is deposited.
  • the electrolytically deposited layer is subjected to a targeted oxidation by heat treatment at a temperature of 500-700 ° C and a duration of 7-9 hours. This oxidation process of the cobalt under the action of the disperse Cr 2 0 3 phase with a particle size below 10 ⁇ m leads to the formation of C 03 0
  • the electrolyte should preferably be an aqueous solution of the following composition:
  • the invention relates to a pair of components which is subject to wear, in particular to fretting corrosion, the components of which are made of a base material such as a nickel-based alloy (e.g. Inconel 100, C 263, Nimonic 80) or a titanium-based alloy e.g. B. 6% Al, 5% Zr, 0.8% Mo, 0.2% Si, balance Ti or chrome or chrome-nickel steels.
  • a nickel-based alloy e.g. Inconel 100, C 263, Nimonic 80
  • a titanium-based alloy e.g. B. 6% Al, 5% Zr, 0.8% Mo, 0.2% Si
  • balance Ti or chrome or chrome-nickel steels balance Ti or chrome or chrome-nickel steels.
  • the frictional corrosion behavior of such a component pairing is correspondingly improved in that one of the component surfaces is provided with a dispersion layer, as disclosed in patent claims 1 and 2 and / or 6. It has been shown that the use of a Co / Cr 2 O 3 dispersion layer according
  • the diagram shown in Fig. 1 is the comparison of the fretting an uncoated component pairing of the material Nimonic 80 with a mating component, is coated in the one of the component surfaces with the inventive dispersion layer Co / Cr 2 0 3.
  • the wear is shown in mm 3 , the temperature load in ° C.
  • the upper solid curve applies to the frictional wear of the uncoated component pairing. From the dashed curves that are very close lie next to each other, the upper one shows the wear of the Co / Cr 2 0 3 coating, the lower one the wear of the uncoated component surface made of Nimonic 80.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Conductive Materials (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Laminated Bodies (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Chemically Coating (AREA)

Claims (7)

1. Couche de dispersion déposée galvaniquement, dans la matrice de laquelle est incorporée une phase dispersée de particules de Cr2O3, le taux d'insertion de la phase dispersée étant de 20 à 50 % en volume, de préférence de 30 % en volume du matériau de la couche, couche de dispersion caractérisée en ce que la matrice est une matrice d'oxyde de cobalt avec les oxydes Co3O4 et CoO et que la dimension des particules de la phase dispersée se situe au-dessous de 10 µm.
2. Couche de dispersion déposée galvaniquement selon la revendication 1, caractérisée en ce que la dimension des particules de la phase dispersée se situe entre 3 µm et 6 wm.
3. Procédé pour la réalisation d'une couche de dispersion selon la revendication 1 ou 2, dans lequel une phase dispersée de Cr203 est mise en suspension dans un électrolyte contenant des ions cobalt, procédé caractérisé en-ce que l'électrolyte a une valeur de pH de 4,5 à 4,9 et que la couche est déposée à une température de 40 à 60 °C et sous une densité de courant de 1 A/dm2 à 6 A/dm2, tandis que la couche déposée électrolytiquement est soumise à une oxydation adéquate par traitement thermique à une température de 500 à 700 °C et pendant une durée de 7 à 9 heures, la dimension des particules de la phase dispersée se situant au-dessous de 10 µm.
4. Procédé selon la revendication 3, caractérisé en ce que la couche est déposée à une température de 50 °C et/ou avec une densité de courant de 3,5 A/dm2.
5. Procédé selon les revendications 3 et 4, caractérisé en ce que l'électrolyte est une solution aqueuse de la composition suivante :
Figure imgb0004
6. Pièce constitutive d'une turbomachine thermique avec une couche de dispersion de protection contre l'usure selon les revendications 1 et 2, avec une épaisseur de couche de 10 à 300 µm.
7. Appariement de pièces constitutives soumis à usure, notamment à la corrosion par frottement, dont les pièces constitutives sont réalisées en un matériau de base tel qu'un alliage à base de Ni (par exemple de l'Inconel 100, du C 263, du Nimonic 80) ou bien d'un alliage à base de Ti (par exemple la composition 6 % AI, 5 % Zr, 0,8 % Mo, 0,2 % Si, le reste étant du Ti), appariement caractérisé en ce qu'une des surfaces de pièces constitutives est munie d'une couche de dispersion selon les revendications 1 et 2 et/ou 6.
EP84102203A 1983-07-29 1984-03-01 Revêtement électrolytique composite Expired EP0132494B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102203T ATE32108T1 (de) 1983-07-29 1984-03-01 Galvanisch abgeschiedene dispersionsschicht.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3327346A DE3327346C2 (de) 1983-07-29 1983-07-29 Verfahren zur Herstellung einer Verschleißschutzschicht und ihre Verwendung
DE3327346 1983-07-29

Publications (3)

Publication Number Publication Date
EP0132494A2 EP0132494A2 (fr) 1985-02-13
EP0132494A3 EP0132494A3 (en) 1985-04-03
EP0132494B1 true EP0132494B1 (fr) 1988-01-20

Family

ID=6205207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102203A Expired EP0132494B1 (fr) 1983-07-29 1984-03-01 Revêtement électrolytique composite

Country Status (5)

Country Link
US (2) US4598016A (fr)
EP (1) EP0132494B1 (fr)
JP (1) JPS6039200A (fr)
AT (1) ATE32108T1 (fr)
DE (2) DE3327346C2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826734A (en) * 1988-03-03 1989-05-02 Union Carbide Corporation Tungsten carbide-cobalt coatings for various articles
US5120707A (en) * 1989-05-22 1992-06-09 Allied-Signal, Inc. Superconducting ceramics by electrodeposition of metals with embedment of particulate matter, followed by oxidation
ATE223518T1 (de) * 1994-03-17 2002-09-15 Westaim Corp Überzüge mit niedriger reibung auf der basis von kobalt auf titan
GB9414858D0 (en) * 1994-07-22 1994-09-14 Baj Coatings Ltd Protective coating
GB9414859D0 (en) * 1994-07-22 1994-09-14 Baj Coatings Ltd Protective coating

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061525A (en) * 1959-06-22 1962-10-30 Platecraft Of America Inc Method for electroforming and coating
NL122246C (fr) * 1962-02-23
NL123689C (fr) * 1962-05-30
US3393067A (en) * 1964-12-18 1968-07-16 Fansteel Metallurgical Corp Process for producing alloys containing chromium and dispersed refractory metal oxide particles
GB1265472A (fr) * 1967-11-29 1972-03-01
US3753667A (en) * 1968-01-16 1973-08-21 Gen Am Transport Articles having electroless metal coatings incorporating wear-resisting particles therein
US3895923A (en) * 1969-12-30 1975-07-22 Texas Instruments Inc High strength metal carbonitrided composite article
GB1336146A (en) * 1971-05-28 1973-11-07 Canning & Co Ltd W Cobalt electrodeposition
GB1358538A (en) * 1971-06-08 1974-07-03 Bristol Aerojet Ltd Electrodeposited composite coatings
DE2313104C3 (de) * 1973-03-16 1982-02-18 Heyes, Josef, Dr.phil., 4000 Düsseldorf Verfahren zum Aufbringen einer festhaftenden Schicht nichtmetallischer Stoffe auf einer elektrisch leitenden Unterlage
US4305792A (en) * 1977-12-21 1981-12-15 Bristol Aerojet Limited Processes for the electrodeposition of composite coatings
US4222828A (en) * 1978-06-06 1980-09-16 Akzo N.V. Process for electro-codepositing inorganic particles and a metal on a surface
US4470897A (en) * 1983-09-20 1984-09-11 Bethlehem Steel Corp. Method of electroplating a corrosion-resistant zinc-containing deposit

Also Published As

Publication number Publication date
JPS6362598B2 (fr) 1988-12-02
JPS6039200A (ja) 1985-02-28
EP0132494A3 (en) 1985-04-03
DE3327346C2 (de) 1986-03-27
US4598016A (en) 1986-07-01
EP0132494A2 (fr) 1985-02-13
ATE32108T1 (de) 1988-02-15
US4599148A (en) 1986-07-08
DE3468909D1 (en) 1988-02-25
DE3327346A1 (de) 1985-02-14

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