EP0132494A2 - Revêtement électrolytique composite - Google Patents

Revêtement électrolytique composite Download PDF

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Publication number
EP0132494A2
EP0132494A2 EP84102203A EP84102203A EP0132494A2 EP 0132494 A2 EP0132494 A2 EP 0132494A2 EP 84102203 A EP84102203 A EP 84102203A EP 84102203 A EP84102203 A EP 84102203A EP 0132494 A2 EP0132494 A2 EP 0132494A2
Authority
EP
European Patent Office
Prior art keywords
disperse phase
dispersion layer
layer
wear
dispersion
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.)
Granted
Application number
EP84102203A
Other languages
German (de)
English (en)
Other versions
EP0132494A3 (en
EP0132494B1 (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 'with a cobalt matrix and a non-metallic disperse phase and a method for producing such a layer.
  • the object of the present invention is to provide a generic dispersion layer which offers even higher resistance to fretting corrosion than previously known dispersion layers, specifically in a temperature range which, if possible, includes temperatures from 200 to 300 ° C.
  • the layer should be easy to produce in terms of process technology, be easily heat-treatable and be usable for higher temperatures without a reaction of the matrix metal Co with the embedded solid.
  • the object is achieved in that, in the case of a generic dispersion layer, the disperse phase consists of Cr 2 0 3 particles. Cr 2 0 3 is resistant to oxidation, temperature and reaction to cobalt.
  • the best results with regard to fretting corrosion could be achieved if the installation rate of the disperse phase is 20 to 50%, preferably 30%, by volume of the layer material.
  • the particle size of the chromium oxide particles should be less than 10 ⁇ m, preferably between 3 and 6 ⁇ m.
  • the invention relates to a process for preparing a marked Dis above - persions slaughter, in which in a cobalt ion-containing electrolyte, the disperse phase is suspended.
  • a method is characterized in that the electrolyte has a pH value of 4.5 to 4.9 and at a temperature of 40 to 60 ° C preferably 50 ° C and a current density of 1 A / dm 'to 6 A. / dm 2 , preferably 3.5 A / dm 2 is deposited.
  • the method according to the invention best results were achieved both in terms of the homogeneity of the deposited layer and in terms of the adhesive strength.
  • the electrolyte should preferably be an aqueous solution of the following composition:
  • the method according to the invention undergoes further development in that the electrolytically deposited dispersion layer is subjected to such a heat treatment which brings about an oxidation of the matrix.
  • the oxidation of the cobalt to Co304 / Co0 is influenced by the Cr 2 0 3 present (embedded). In contrast to the oxidation of pure Co, these oxide layers are thinner and adhere well. This can increase the adhesive strength of the oxide layer in particular.
  • the heat treatment is preferably carried out at a temperature of 500 ° C. to 700 ° C. and for a period of 7 to 9 hours. Within these limits, the optimal conditions are 600 ° C and a duration of 8 hours.
  • the invention relates to a pair of components that is subject to wear, in particular to friction 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 z. 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
  • Ti chrome or chrome-nickel steels.
  • the frictional corrosion behavior of such a component pairing is improved accordingly in that one of the component surfaces is provided with a dispersion layer, as disclosed in patent claims 1 to 3 and / or 8. It has been shown that the use of a Co / Cr 2 O 3 dispersion layer according to the invention on only one component also reduces the wear of the uncoated component to a minimum.
  • the frictional wear is shown in mm 3 as a function of the temperature load in ° C. Both curves shown apply to the frictional wear of the dispersion layer against the dispersion layer.
  • the solid curve shows an example with a dispersion layer made of Co / Cr 3 C 2
  • the dashed curve which is much lower, especially in a temperature range below 400 ° C, refers to dispersion layers Co / Cr 2 O 3 .
  • This comparison shows that, especially in the range from 200 to 300 ° C., the wear values for the dispersion layers according to the invention are only 1/5 to 1/10 of the wear values for previously known Co / Cr3C2 layers.
  • the curve for the Co / Cr 3 C 2 dispersion layer is taken from the magazine Kobalt, 1973, issue 3, page 5, picture 4.
  • the diagram shown in Fig. 2 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. Again 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. Of the dashed curves, which are very close to each other, the upper indicates the wear of the Co / Cr 2 0 3 coating, the lower 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)
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 true EP0132494A2 (fr) 1985-02-13
EP0132494A3 EP0132494A3 (en) 1985-04-03
EP0132494B1 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
EP0750689B1 (fr) * 1994-03-17 2002-09-04 The Westaim Corporation Revetements a base de cobalt et a faible coefficient de frottement pour titane
GB9414859D0 (en) * 1994-07-22 1994-09-14 Baj Coatings Ltd Protective coating
GB9414858D0 (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
NL275167A (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
DE3327346C2 (de) 1986-03-27
EP0132494A3 (en) 1985-04-03
JPS6039200A (ja) 1985-02-28
JPS6362598B2 (fr) 1988-12-02
DE3468909D1 (en) 1988-02-25
DE3327346A1 (de) 1985-02-14
US4598016A (en) 1986-07-01
US4599148A (en) 1986-07-08
ATE32108T1 (de) 1988-02-15
EP0132494B1 (fr) 1988-01-20

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