EP1114209B1 - Couche de chrome dure galvanique - Google Patents

Couche de chrome dure galvanique Download PDF

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Publication number
EP1114209B1
EP1114209B1 EP00943813A EP00943813A EP1114209B1 EP 1114209 B1 EP1114209 B1 EP 1114209B1 EP 00943813 A EP00943813 A EP 00943813A EP 00943813 A EP00943813 A EP 00943813A EP 1114209 B1 EP1114209 B1 EP 1114209B1
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EP
European Patent Office
Prior art keywords
chromium
hard
particles
galvanic
coat
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 - Lifetime
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EP00943813A
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German (de)
English (en)
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EP1114209A1 (fr
Inventor
Rudolf Linde
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Federal Mogul Burscheid GmbH
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Federal Mogul Burscheid GmbH
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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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/18—Electroplating using modulated, pulsed or reversing current
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/615—Microstructure of the layers, e.g. mixed structure
    • C25D5/617—Crystalline layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/60—Electroplating characterised by the structure or texture of the layers
    • C25D5/625—Discontinuous layers, e.g. microcracked layers
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/926—Thickness of individual layer specified
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/934—Electrical process
    • Y10S428/935—Electroplating
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49274—Piston ring or piston packing making
    • Y10T29/49281—Piston ring or piston packing making including coating or plating
    • 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
    • Y10T428/12458—All metal or with adjacent metals having composition, density, or hardness gradient
    • 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
    • Y10T428/12479—Porous [e.g., foamed, spongy, cracked, etc.]
    • 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.]
    • 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.]
    • Y10T428/12639—Adjacent, identical composition, components
    • 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
    • Y10T428/12806—Refractory [Group IVB, VB, or VIB] metal-base component
    • Y10T428/12826—Group VIB metal-base component
    • Y10T428/12847—Cr-base component

Definitions

  • the invention relates to a galvanic hard chrome layer, in particular for one Piston ring, consisting essentially of an electrolyte containing hexavalent chromium is formed, with cracks on the layer and diamond cracks in these cracks are stored.
  • Galvanic hard chrome layers have been in the prior art for a long time known and are used, for example, as a surface coating for shock absorber pistons, Hydraulic parts, piston rings and pressure rollers are used.
  • the workpiece to be chrome-plated then becomes during chrome-plating first switched cathodically so that a micro-cracked chrome layer forms, then the workpiece is switched anodically, so that the microcracks extend to the desired gap width widen and the cracks fill with solid particles, and then again occurs a cathodic circuit so that the solid particles by closing the cracks encapsulated and enclosed.
  • This periodic current reversal can if necessary, be repeated several times, the chrome plating parameters correspondingly the application can be varied so that the desired crack width, crack density and Crack filling with possibly different solid particle fillings arise.
  • a method of making a hard chrome composite coating on a substrate the comprises a disperse phase and is particularly suitable for mechanical components which are subject to high temperature friction, is described in European patent EP 0 668 375 B1.
  • This method includes the step of galvanic Deposition of at least one hard chrome layer in a chrome plating bath of the type which Forms microcracks and in which a predetermined concentration of particles of a given Size of a non-metal insoluble in the bath is dispersed in suspension, wherein together in the course of said deposition step, the substrate permanently Cathode potential maintained and a pulsating cathode current that cycled with time changed between a minimum and a maximum value, is supplied to a To achieve a chrome layer that has a matrix with microcracks of a given distribution and one comprises disperse phase, which consists of said non-metal particles, some of which are in the Microcracks included and some embedded directly into the matrix, the Chrome plating bath is a bath based on chromic acid, which is
  • Another known piston ring which is described in European patent application EP 0 841 414 A1 is different from that from EP 0 841 413 A1 in that in the Cracked round aluminum particles are included, the average Particle size is between 0.7 and 10 ⁇ m and the dispersion ratio of the round Aluminum particles in the electrolyte is 3 to 15% by volume.
  • German patent application DE 197 45 811 A1 finally describes a galvanic Hard chrome layer with one extending partially or entirely through the layer thickness Crack network and solid particles embedded and encapsulated in the cracks there is at least two layers of hard chrome, with at least one layer under pulsing Direct current is deposited, so that the chromium in different crystallization forms is present.
  • the hard chrome can additionally with the metals tungsten, vanadium and / or Molybdenum alloyed.
  • From US-A-4 846 940 is the use of diamond particles of a size about 0.5 - 15 ⁇ m for the production of galvanic hard chrome layers.
  • EP-A-0 668 375 describes the production of hard chrome layers under Use of hard materials that can also consist of diamond. A particle size 0.1 - 20 ⁇ m is considered suitable.
  • the object of the invention based on providing a galvanic hard chrome layer, the improved physical Properties such as improved wear resistance and Resistance to seizure.
  • This object is achieved with a generic galvanic hard chrome layer in which the diamond particles have a size in the range from 0.25 to 0.4 ⁇ m.
  • the diamond particle size indicated does not mean that all particles are necessarily one must have the same size, rather they can be of a different size have, which should only be in the range of 0.25 to 0.4 ⁇ m.
  • the galvanic chrome layer according to the invention is essentially made of one hexavalent chromium-containing electrolytes formed, which from the hexavalent Chromium formed by electrolytes in contrast to one made from trivalent electrolyte Chromium formed has more lattice defects, since that from a hexavalent electrolyte formed chrome in addition to the cubic body-centered chrome more hexagonal chrome hydride contains what is due to the strong hydrogen formation during the electrodeposition is due. This results in a larger number of lattice defects and thus also in an even greater hardness of the deposited chrome.
  • the hard chrome layer according to the invention does not necessarily have to be pure Act chrome. On the contrary, the alloying of the Chromium, especially with the metals molybdenum, vanadium and tungsten, may be advantageous.
  • the galvanic according to the invention could Hard chrome layer can achieve significantly better results than with the coatings, such as they have so far been used.
  • An electroplated hard chrome layer according to the invention with diamond inclusions shows also at high thermal loads, under which the layers previously used can reach their application limits with aluminum oxide particles, far improved Characteristics.
  • Diamond converts to graphite at higher temperatures.
  • the temperature of the Layer e.g. B. is applied to a piston ring tread, so high that a Burn marks appear.
  • the diamond particles change advantageously in graphite, which then takes on lubrication tasks and thus the Prevention of burn marks.
  • the layer according to the invention thus also has very good properties Emergency running properties, especially due to the conversion of diamond to graphite Temperatures of approx. 700 ° C or higher.
  • the hard chrome layer according to the invention can preferably be produced by on and for known chromium plating baths with solid particles dispersed therein are used, as they have been known from the prior art for a long time.
  • chrome plating the workpiece to be chromed is first switched cathodically, so that there is a Micro-cracked hard chrome layer forms, then the workpiece is anodically switched so that the micro cracks widen to the desired gap width and the cracks widen with the Fill diamond particles.
  • the hard chrome layer according to the invention is not made of pure chrome, but of a Alloy elements are formed in the chromium plating electrolyte as Salts dissolved and galvanically deposited together with the chrome.
  • the Alloy elements preferably in amounts of 0.1 to 30 percent by weight in the Chrome layer present. Such layers are still compared to pure chrome layers more wear-resistant and ductile.
  • the entire thickness of the electroplated hard chrome layer according to the invention should preferably be used be several times larger than the particle size of the particles. This is desirable for yourself the particles can be completely embedded in the crack network formed in the hard chrome layer and not only individual particles are only partially embedded in the chrome layer. Most of the time it is it is also desirable that the cracks are filled with many diamond particles.
  • the thickness of the Hard chrome layer according to the invention is preferably between 0.0005 and 1.0 mm.
  • the gap width of the cracks in the galvanic chrome layer according to the invention should be larger than the particles to be stored.
  • the galvanic hard chrome layer according to the invention is above 0.3 ⁇ m, in particular is above 0.5 ⁇ m, so that solid particles can be embedded in the cracks at all not the cracks are too small for the diamond particles.
  • Hard chrome layer can be achieved if it consists of at least two layers of chrome layer consists. It was observed that the cracks in the chrome layer were not always continuous be formed. If thinner layers are applied and the particles each in the cracks of the individual layers, a coating can be achieved which better distribution of the diamond particles in the coating both in their entire thickness, as well as across their surface, since the cracks are not always in the same places be formed.
  • the thickness of the individual layers is preferably about 0.0005 to 0.5 mm.
  • the hard chrome layer according to the invention consists of at least two layers, then the individual layers z. B. also different heights or completely different Have alloy components. This can be done depending on the shift requirements or be suitably selected for the material to be coated.
  • the galvanic chromium layer is now formed in such a way that the at least two chromium layer layers have a different crystal structure, the strength properties of the layer according to the invention can be further improved.
  • the chromium is deposited from the electrolyte on the cathodically connected workpiece with pulsating direct current with current densities between 5 and 250 A / dm 2 , so that several layers of hard chromium with different crystallization forms are deposited in the chromium layer according to the current density.
  • the workpiece is switched anodically, so that the crack network in hard chrome expands and fills with the solid particles.
  • the layers of different crystal structures are preferably alternated deposited on top of each other.
  • Such a galvanic hard chrome layer according to the invention showed even further improvements Properties such as a longer service life at extreme temperature and Wear loads. Perhaps this is due to the fact that the different crystal structures of the two layers, high lattice voltages, in particular occur at the interfaces, which not only makes the layer harder overall, but also also improved other mechanical properties of the hard chrome layer according to the invention become.
  • the electroplated hard chrome layer according to the invention in particular then excellent properties, preferably very good seizure resistance and wear resistance, if the proportion of diamond particles in the chrome layer is not chosen too high.
  • the layer according to the invention shows particularly good properties if the proportion of Diamond particles in the chrome layer is 0.1 to 10 wt .-%.
  • Hard material particles can all particles of hard materials familiar to the person skilled in the art include, but in particular come tungsten carbide, chromium carbide, aluminum oxide, Silicon carbide, silicon nitride, boron carbide and / or cubic bomitride are possible.
  • the inclusion of further hard material particles can occur, among other things, when high pressures and insufficient lubrication may be advantageous if the temperature is e.g. B. on the Piston ring running surface for which the layers according to the invention, for. B. can be used can, is so high that the diamond particles convert into graphite and Take on lubrication tasks. At this point, however, the diamond alone can no longer serve to improve wear resistance. Here the sit down excellent properties of the hard material particles present next to the diamond and prevent unnecessarily high wear of the galvanic according to the invention Hard chrome layer.
  • Solid lubricant particles continued to crack solid particles to increase the ductility of the Corrosion resistance and / or solid particles are contained as dyes.
  • the layer according to the invention can incorporate further particles in addition to the hard material particles suitable for the respective application.
  • Solid lubricant particles for example hexagonal bomitride, graphite and / or Polymer particles, in particular made of polyethylene and / or polytetrafluoroethylene, additionally in the Cracks are introduced.
  • Ductile metals can be used to increase the ductility of the hard chrome layer according to the invention or tin, titanium or aluminum alloys.
  • the cracks can be coated with polyethylene, for example filled and then melted in the cracks, so that the cracks sealed and protected against corrosive attacks.
  • Different particles can also be used in addition to the diamond particles to fill the cracks be used.
  • the diamond particles embedded in the galvanic chrome layer are advantageously made of mono- and / or polycrystalline diamond.
  • Polycrystalline diamond that is only synthetic is currently more expensive than monocrystalline diamond, however better results are achieved with polycrystalline diamond, since a polycrystalline Diamond has many sliding planes due to the many different crystals.
  • the high wear resistance of the galvanic chrome layer according to the invention brings about however, that this layer runs in relatively slowly. This is particularly the case with Use of the layer on piston rings is not so desirable because of negative effects in oil consumption and emissions in this phase. Improvements can be made here with special surface topographies, such as those with a special lapping be realized, and / or with the development of piston ring coatings that improve the running-in achieve that on the wear-resistant base layers galvanically, by means of PVD or CVD or other methods familiar to a person skilled in the art are to be applied.
  • a dispersion layer based on nickel-cobalt-phosphorus can be used for this Silicon nitride can be used as dispersants, which with high fire protection ensures the required fast running-in.
  • the layer graded is.
  • the grading can, for example, be chosen such that it is on the tread has reduced solids content. The solids can go out decrease and even not at all in the outermost layer area layer according to the invention may be present.
  • the solids content can also toward the free surface of the hard chrome layer to accept.
  • the layer according to the invention can also be graded Lubricants and / or the other particles contained in the layer.
  • the galvanic hard chrome layer according to the invention can also be advantageous if surface hardening is also carried out.
  • nitriding since it can be carried out very well defined, i. H. it can either be nitrided the entire surface or only certain, exactly defined areas.
  • the nitriding of surfaces is usually carried out by means of plasma nitriding carried out.
  • the galvanic chrome layer according to the invention can also be one Surface hardening by means of ion implantation, for example with nitrogen become.
  • the galvanic chrome layer according to the invention can be advantageously as a tread coating for temperature and wear Use machine parts and particularly preferably for piston rings, as they are at rubbing wear and has proven particularly effective when used in high temperatures.
  • Chrome plating takes place at a temperature of 60 ° C.
  • the workpiece to be chrome-plated is first switched cathodically in a first stage and chrome-plated for 8 minutes at a current density of 65 A / dm 3 .
  • the polarity is reversed and the crack network of the previously deposited chromium layer is expanded and filled with diamond particles by anodic switching of the workpiece for one minute at a current density of 60 A / dm 3 .
  • This cycle namely "cathodic chrome plating" for 8 minutes and "anodic etching" for 1 minute, is repeated a total of 20 times, resulting in a layer with a layer thickness of approximately 140 ⁇ m, which has a diamond content of 3-5% by weight. of the entire layer.
  • the chrome plating takes place for a total of 5 hours at 55 ° C. to form a chrome layer with a total thickness of 0.2 mm.
  • the workpiece to be chrome-plated is first connected cathodically in a first stage and chrome-plated for 30 minutes at a current density of 65 A / dm 3 .
  • the polarity is reversed and the crack network of the previously deposited chromium layer is expanded by anodic switching of the workpiece for 30 seconds at a current density of 150 A / dm 3 and filled with diamond and aluminum oxide particles.
  • This cycle is repeated a total of 10 times, resulting in a layer with a layer thickness of approximately 145 ⁇ m, which has a diamond content of 1-3% by weight of the entire layer.

Claims (15)

  1. Couche galvanique de chrome dur, en particulier pour un segment de piston, qui est essentiellement constituée d'un électrolyte contenant du chrome hexavalent, dans la couche se trouvant des fissures et dans ces fissures étant englobées des particules de diamant, caractérisée en ce que les particules de diamant ont une taille comprise entre 0,25 et 0,4 µm.
  2. Couche galvanique de chrome dur selon la revendication 1, caractérisée en ce que la couche de chrome dur comporte des éléments d'alliage.
  3. Couche galvanique de chrome dur selon la revendication 1 ou 2, caractérisée en ce que la couche de chrome présente une épaisseur comprise entre 0,0005 et 1,0 mm.
  4. Couche galvanique de chrome dur selon l'une des revendications 1 à 3, caractérisée en ce que la largeur de fente des fissures est supérieure à 0,0001 mm.
  5. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce que la couche de chrome est constituée d'au moins deux strates de couche de chrome.
  6. Couche galvanique de chrome dur selon la revendication 5, caractérisée en ce que les strates, au moins au nombre de deux, de la couche de chrome, présentent une structure cristalline différente.
  7. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce que la proportion de particules de diamant dans la couche de chrome est comprise entre 0,1 et 10% en poids.
  8. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce qu'outre les particules de diamant, d'autres particules de matière dure sont incluses dans les fissures.
  9. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce que les particules de matière dure contiennent du carbure de tungstène, du carbure de chrome, de l'oxyde d'aluminium, du carbure de silicium, du nitrure de silicium, du carbure de bore et/ou du nitrure de bore cubique.
  10. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce que les fissures contiennent en outre des particules de lubrifiant solide, des particules de matières solides pour accroítre la ductilité, la résistance à la corrosion et/ou des particules solides servant de colorant.
  11. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce que les particules de diamant sont formées d'un diamant monocristallin et/ou polycristallin.
  12. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce qu'une couche de rodage est encore appliquée sur celle-ci.
  13. Couche galvanique de chrome dur selon la revendication 12, caractérisée en ce que la couche de rodage est une couche de Ni-Co-P déposée galvaniquement avec des inclusions de nitrure de silicium.
  14. Couche galvanique de chrome dur selon l'une des revendications précédentes, caractérisée en ce qu'elle est graduée.
  15. Utilisation de la couche galvanique de chrome dur selon l'une des revendications précédentes, pour un segment de piston.
EP00943813A 1999-07-08 2000-06-15 Couche de chrome dure galvanique Expired - Lifetime EP1114209B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19931829 1999-07-08
DE19931829A DE19931829A1 (de) 1999-07-08 1999-07-08 Galvanische Hartchromschicht
PCT/EP2000/005524 WO2001004386A1 (fr) 1999-07-08 2000-06-15 Couche de chrome dure galvanique

Publications (2)

Publication Number Publication Date
EP1114209A1 EP1114209A1 (fr) 2001-07-11
EP1114209B1 true EP1114209B1 (fr) 2004-08-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00943813A Expired - Lifetime EP1114209B1 (fr) 1999-07-08 2000-06-15 Couche de chrome dure galvanique

Country Status (9)

Country Link
US (1) US6503642B1 (fr)
EP (1) EP1114209B1 (fr)
JP (1) JP4406520B2 (fr)
AT (1) ATE272734T1 (fr)
BR (1) BR0006828B1 (fr)
DE (2) DE19931829A1 (fr)
ES (1) ES2223540T3 (fr)
PT (1) PT1114209E (fr)
WO (1) WO2001004386A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007038188A1 (de) 2007-08-13 2009-02-19 Federal-Mogul Burscheid Gmbh Verschleißfest beschichtetes Maschinenelement und Verfahren zu dessen Herstellung
DE102008017270B3 (de) * 2008-04-04 2009-06-04 Federal-Mogul Burscheid Gmbh Strukturierte Chrom-Feststoffpartikel-Schicht und Verfahren zu deren Herstellung sowie beschichtetes Maschinenelement
DE102011084051A1 (de) 2011-10-05 2013-04-11 Federal-Mogul Burscheid Gmbh Beschichteter Kolbenring mit radial zunehmender Schichtdicke und Verfahren zu dessen Herstellung
DE102011084052A1 (de) 2011-10-05 2013-04-11 Federal-Mogul Burscheid Gmbh Beschichteter Kolbenring mit scharfer Ölabstreifkante
WO2013135325A1 (fr) 2012-03-16 2013-09-19 Federal-Mogul Burscheid Gmbh Segment de piston doté d'une couche anti-usure à base de particules solides/chrome et d'une face de flanc résistante à la corrosion
EP2660362B1 (fr) 2010-12-27 2019-06-26 Nippon Piston Ring Co., Ltd. Film composite de placage au chrome et élément de glissement muni du film

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CN1747797B (zh) * 2003-02-07 2011-08-17 戴蒙得创新股份有限公司 具有扩大抵抗能力的设备磨损表面及其加工方法
US20060246275A1 (en) * 2003-02-07 2006-11-02 Timothy Dumm Fiber and sheet equipment wear surfaces of extended resistance and methods for their manufacture
DE102004019370B3 (de) * 2004-04-21 2005-09-01 Federal-Mogul Burscheid Gmbh Herstellung einer strukturierten Hartchromschicht und Herstellung einer Beschichtung
US20060169744A1 (en) * 2005-02-01 2006-08-03 Pace, Incorporated Soldering tip with wear-and corrosion resistant coating
US7383807B2 (en) * 2005-05-23 2008-06-10 Federal-Mogul World Wide, Inc. Coated power cylinder components for diesel engines
EP2118534B1 (fr) 2007-01-09 2017-04-12 Federal-Mogul Burscheid GmbH Segment de piston avec une adhésion interlaminaire multicouche et procédé de fabrication de celui-ci
DE102007027245B4 (de) 2007-06-13 2018-08-30 Federal-Mogul Burscheid Gmbh Kolbenring
DE102007035502A1 (de) 2007-07-28 2009-02-05 Federal-Mogul Burscheid Gmbh Kolbenring
DE102007037778A1 (de) * 2007-08-10 2009-02-12 Mahle International Gmbh Hartchromschicht, beschichtetes Substrat und tribologisches System
CN101255592B (zh) * 2007-12-07 2010-07-07 华南理工大学 一种铬/金刚石复合镀层及其制备方法
US9569912B2 (en) 2008-06-26 2017-02-14 Shopatm Bv (Sarl) Article storage and retrieval apparatus and vending machine
DE102008036996B4 (de) * 2008-08-07 2010-09-02 Federal-Mogul Burscheid Gmbh Gleit- und/oder Gegenring einer Laufwerkdichtung
US8652226B2 (en) 2008-09-16 2014-02-18 Diamond Innovations, Inc. Abrasive particles having a unique morphology
WO2011014884A1 (fr) 2009-07-31 2011-02-03 Diamond Innovations, Inc. Fil de précision contenant des particules abrasives á surface modifiée
WO2015188267A1 (fr) 2014-06-09 2015-12-17 Hatch Ltd. Réacteur à écoulement piston avec lit fluidisé à recirculation interne
US9945481B2 (en) 2016-07-07 2018-04-17 Federal-Mogul Llc Polymer coating in cracked piston ring coating
JP6417438B2 (ja) 2017-03-22 2018-11-07 株式会社リケン 複合クロムめっき皮膜、及び当該皮膜を有するピストンリング
DE102017116480A1 (de) 2017-07-21 2019-01-24 Federal-Mogul Friedberg Gmbh Kolbenring mit kugelgestrahlter Einlaufschicht und Verfahren zur Herstellung
DE102020105003A1 (de) * 2020-02-26 2021-08-26 Federal-Mogul Burscheid Gmbh Kolbenring mit Hartchromschicht und verbessertem Einlaufverhalten
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DE102008017270B3 (de) * 2008-04-04 2009-06-04 Federal-Mogul Burscheid Gmbh Strukturierte Chrom-Feststoffpartikel-Schicht und Verfahren zu deren Herstellung sowie beschichtetes Maschinenelement
US8337687B2 (en) 2008-04-04 2012-12-25 Federal-Mogul Burscheid Gmbh Structured chrome solid particle layer and method for the production thereof
EP2660362B1 (fr) 2010-12-27 2019-06-26 Nippon Piston Ring Co., Ltd. Film composite de placage au chrome et élément de glissement muni du film
DE102011084051A1 (de) 2011-10-05 2013-04-11 Federal-Mogul Burscheid Gmbh Beschichteter Kolbenring mit radial zunehmender Schichtdicke und Verfahren zu dessen Herstellung
DE102011084052A1 (de) 2011-10-05 2013-04-11 Federal-Mogul Burscheid Gmbh Beschichteter Kolbenring mit scharfer Ölabstreifkante
DE102011084051B4 (de) * 2011-10-05 2020-03-12 Federal-Mogul Burscheid Gmbh Beschichteter Kolbenring mit radial zunehmender Schichtdicke und Verfahren zu dessen Herstellung
WO2013135325A1 (fr) 2012-03-16 2013-09-19 Federal-Mogul Burscheid Gmbh Segment de piston doté d'une couche anti-usure à base de particules solides/chrome et d'une face de flanc résistante à la corrosion
DE102012204156A1 (de) 2012-03-16 2013-09-19 Federal-Mogul Burscheid Gmbh Kolbenring mit Chrom-Feststoffpartikel-Verschleißschutzschicht und korrosionsbeständiger Flankenfläche

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ES2223540T3 (es) 2005-03-01
PT1114209E (pt) 2004-10-29
US6503642B1 (en) 2003-01-07
EP1114209A1 (fr) 2001-07-11
ATE272734T1 (de) 2004-08-15
WO2001004386A1 (fr) 2001-01-18
JP2003504517A (ja) 2003-02-04
DE50007283D1 (de) 2004-09-09
BR0006828B1 (pt) 2011-08-23
BR0006828A (pt) 2001-06-05
DE19931829A1 (de) 2001-01-18
JP4406520B2 (ja) 2010-01-27

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