EP0424863A1 - Process for electrolytically depositing a metal layer resisting corrosion by hot gases - Google Patents
Process for electrolytically depositing a metal layer resisting corrosion by hot gases Download PDFInfo
- Publication number
- EP0424863A1 EP0424863A1 EP90120273A EP90120273A EP0424863A1 EP 0424863 A1 EP0424863 A1 EP 0424863A1 EP 90120273 A EP90120273 A EP 90120273A EP 90120273 A EP90120273 A EP 90120273A EP 0424863 A1 EP0424863 A1 EP 0424863A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cobalt
- nickel
- metal alloy
- components
- matrix
- 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
Links
Classifications
-
- 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
- C25D5/48—After-treatment of electroplated surfaces
- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
-
- 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
Definitions
- the invention of the main patent relates to a method for producing electrodeposited hot gas corrosion layers with metal alloy particles built into a cobalt and / or nickel matrix, in which an electrolyte containing the matrix material is mixed with a suspension of chromium and / or aluminum-containing metal alloy powder.
- the task of the main patent was to specify a dispersion coating process in which a uniform, high-quality hot gas corrosion layer can be achieved with little process effort, with an installation rate of over 40% by volume of the suspension powder in the metal matrix.
- the metal alloy powder is a chrome or aluminum based alloy and has a spherical shape and a passivated surface and after the deposition of the Cobalt and / or nickel layer with the embedded alloy particles is subjected to a heat treatment to form the alloy.
- This method has the disadvantage of unexpected drops in quality with respect to the uniformity of the layer thickness and the rate of incorporation of the metal alloy powder in the deposited metal matrix. There are significant differences in the installation rate between the top and bottom, and between the top and side parts.
- This object is achieved in that the components to be coated with their coating surfaces horizontally in a gas bubble mixed standing electrolyte bath are arranged and rotated about a horizontal axis.
- This solution has the advantage that an equalization of the installation rate and the layer thickness between the top and bottom of the component is achieved.
- a preferred embodiment of the invention provides for the deposition to be carried out in a speed range between 2 revolutions / minute and 10 revolutions / minute.
- This area has the advantage that periodic microscopic installation rate differences between the top and bottom are avoided, as they occur at speeds below 2 rpm and that the installation rate does not drop below the 40 vol.% Limit as long as the speed is 10 rpm / min does not exceed.
- a preferred embodiment of the invention provides that cobalt and nickel are deposited as a matrix material in a stoichiometric molar ratio of 1: 1.
- a preferred embodiment of the deposition process provides a current density of 500 to 800 A / m 2 for a stoichiometric cobalt-nickel matrix, which advantageously brings about a high deposition rate between 100 ⁇ m / h and 150 ⁇ m / h.
- a layer thickness variation of less than 10% is advantageously achieved and the rate of incorporation of metal alloy powder is increased to 45% by volume.
- a layer of 50 mol% cobalt and 50 mol% nickel with inclusions of CrAlY particles of the composition 71 mol% Cr, 27 mol% Al, and 2 mol% Y separates in a uniform layer thickness on the top and Bottom of the blade from 140 ⁇ 10 ⁇ m with a constant installation proportion of 45 vol.% CrAlY particles.
- wetting agents to improve the layer quality.
- wetting agents to improve the layer quality, wetting agents, basic glosses or other additives can be added to the deposition bath.
- 0.4 g / l ortho-benzene acid sulfide, 0.2 g / l butyn (2) diol (1.4) and 3 ml / l SNAP A / M were additionally dissolved in the separating bath.
- the matrix elements cobalt and nickel diffuse into and into each other the surfaces of the CrAlY particles, as well as the surface of the base material of the component, which in this example is made up of the following alloy components: 0.15% carbon 10.0% chromium 15.0% cobalt 3.0% molybdenum 4.7% titanium 5.5% aluminum 0.05% zirconium 0.015% boron 1.0% vanadium Rest of nickel
- Turbine blades with the following composition were also successfully coated with the parameters specified above: 9.0% chromium 5.0% cobalt 9.5% tungsten 2.9% tantalum 0.7% niobium 5.5% aluminum 1.8% titanium 0.03% carbon % Nickel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Coating By Spraying Or Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Gas Separation By Absorption (AREA)
- Filtering Materials (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
Die Erfindung gibt ein Verfahren zur Erzeugung galvanisch abgeschiedener Heißgaskorrosionsschichten an, bei dem eine Nickel-Kobalt-Matrix abgeschieden wird, in die Metallegierungs-Partikel eingelagert werden.The invention specifies a method for producing electrodeposited hot gas corrosion layers, in which a nickel-cobalt matrix is deposited, in which metal alloy particles are embedded.
Description
Die Erfindung des Hauptpatents bezieht sich auf ein Verfahren zur Erzeugung galvanisch abgeschiedener Heißgaskorrosionsschichten mit in einer Kobalt- und/oder Nickelmatrix eingebauten Metallegierungspartikein, bei dem ein den Matrixwerkstoff enthaltender Elektrolyt mit einer Suspension aus chrom- und/oder aluminiumhaltigem Metallegierungspulver versetzt ist.The invention of the main patent relates to a method for producing electrodeposited hot gas corrosion layers with metal alloy particles built into a cobalt and / or nickel matrix, in which an electrolyte containing the matrix material is mixed with a suspension of chromium and / or aluminum-containing metal alloy powder.
Zur Verbesserung der Struktur und Oberflächenqualität der Heißgaskorrosionsschichten mit einer Kobalt- und/oder Nickelmatrix war die Aufgabe des Hauptpatentes ein Dispersionsbeschichtungsverfahren anzugeben, bei dem unter geringem Verfahrensaufwand eine gleichmäßige, qualitativ hochwertige Heißgaskorrosionsschicht erzielbar ist, die eine Einbaurate von über 40 Vol. % des Suspensionspulvers in der Metallmatrix aufweist.In order to improve the structure and surface quality of the hot gas corrosion layers with a cobalt and / or nickel matrix, the task of the main patent was to specify a dispersion coating process in which a uniform, high-quality hot gas corrosion layer can be achieved with little process effort, with an installation rate of over 40% by volume of the suspension powder in the metal matrix.
Es wurde im Hauptpatent vorgeschlagen, daß das Metallegierungspulver eine Chrom- oder Aluminiumbasislegierung ist und kugelige Form und eine passivierte Oberfläche aufweist und nach dem Abscheiden der Kobalt- und/oder Nickelschicht mit den eingelagerten Legierungspartikeln eine Wärmebehandlung zur Legierungsbildung erfolgt.It has been proposed in the main patent that the metal alloy powder is a chrome or aluminum based alloy and has a spherical shape and a passivated surface and after the deposition of the Cobalt and / or nickel layer with the embedded alloy particles is subjected to a heat treatment to form the alloy.
Bei diesem Verfahren treten nachteilig unerwartete Einbrüche in der Qualität in bezug auf Gleichmäßigkeit der Schichtdicke und der Einbaurate des Metallegierungspulvers in der abgeschiedenen Metallmatrix auf. Es werden erhebliche Einbauratenunterschiede zwischen Oberseite und Unterseite, sowie zwischen Oberseite und Seitenteilen festgestellt.This method has the disadvantage of unexpected drops in quality with respect to the uniformity of the layer thickness and the rate of incorporation of the metal alloy powder in the deposited metal matrix. There are significant differences in the installation rate between the top and bottom, and between the top and side parts.
Bei entsprechenden Vergleichsversuchen wurde überraschender Weise gefunden, daß vertikal im Elektrolytbad angeordnete Oberflächenbereiche eine geringe Einbaurate mit unter 10 Vol. % an Metallegierungspulver aufweisen und daß dies sowohl im rotierenden als auch im Gasblasen durchströmten stehenden Elektrolytbad auftritt.In corresponding comparative experiments, it was surprisingly found that surface areas arranged vertically in the electrolyte bath have a low incorporation rate with less than 10% by volume of metal alloy powder and that this occurs both in the rotating electrolyte bath and in the standing electrolyte bath through which gas bubbles flow.
Bei horizontal angeordneten Bauteilen wurde auf der Bauteilunterseite ebenfalls eine Einbaurate kleiner 10 Vol. % an Metallegierungspulver festgestellt.In the case of horizontally arranged components, an installation rate of less than 10% by volume of metal alloy powder was also found on the underside of the component.
ist es, sowohl mikroskopische Agglomerationen von Metallegierungspartikeln in der abzuscheidenden Metallmatrix, als auch eine partielle Ausdünnung von Metallegierungspartikeln in der Schicht in einzelnen Oberflächenbereichen zu vermeiden und eine gleichmäßige Zusammensetzung der Schicht mit über 40 Vol. %-Anteil der Metallegierungspartikel in der Schicht zu erzielen und eine Schichtdickenvariation auf dem Bauteil zu minimieren.is to avoid both microscopic agglomerations of metal alloy particles in the metal matrix to be deposited, as well as a partial thinning of metal alloy particles in the layer in individual surface areas and to achieve a uniform composition of the layer with over 40% by volume of the metal alloy particles in the layer and to minimize a layer thickness variation on the component.
Gelöst wird diese Aufgabe dadurch, daß die zu beschichtenden Bauteile mit ihren Beschichtungsflächen horizontal in einem Gasblasen durch mischten stehenden Elektrolytbad angeordnet sind und um eine horizontale Achse gedreht werden.This object is achieved in that the components to be coated with their coating surfaces horizontally in a gas bubble mixed standing electrolyte bath are arranged and rotated about a horizontal axis.
Diese Lösung hat den Vorteil, daß eine Vergleichmäßigung der Einbaurate und der Schichtdicke zwischen Bauteiloberseite und Bauteilunterseite erreicht wird.This solution has the advantage that an equalization of the installation rate and the layer thickness between the top and bottom of the component is achieved.
Eine bevorzugte Ausbildung der Erfindung sieht vor, in einem Drehzahlbereich zwischen 2 Umdrehungen/Minute und 10 Umdrehungen/Minute die Abscheidung durchzuführen. Dieser Bereich hat den Vorteil, daß periodisch auftretende mikroskopische Einbauratenunterschiede zwischen Ober- und Unterseite vermieden werden, wie sie bei Drehzahlen unter 2 U/min auftreten und daß ein Abfall der Einbaurate unter die 40 Vol. %-Grenze nicht auftritt solange die Drehzahl 10 U/min nicht übersteigt.A preferred embodiment of the invention provides for the deposition to be carried out in a speed range between 2 revolutions / minute and 10 revolutions / minute. This area has the advantage that periodic microscopic installation rate differences between the top and bottom are avoided, as they occur at speeds below 2 rpm and that the installation rate does not drop below the 40 vol.% Limit as long as the speed is 10 rpm / min does not exceed.
Eine bevorzugte Ausbildung der Erfindung sieht vor, daß als Matrixmaterial Kobalt und Nickel im stöchiometrischen Molverhältnis von 1:1 abgeschieden werden.A preferred embodiment of the invention provides that cobalt and nickel are deposited as a matrix material in a stoichiometric molar ratio of 1: 1.
Vergleichsversuche zeigten unerwartete Vorteile für diese stöchiometrische Abscheidung gegenüber einer reinen Kobalt-Matrix-Abscheidung. Es konnte die Abscheidegeschwindigkeit mehr als verdoppelt werden, da überraschenderweise die kritische Stromdichte, bei der die Schichtqualität bereits wieder abfällt, mehr als verdoppelt werden konnte. Bei reiner Kobalt-Matrix-Abscheidung würde bei der Verdoppelung der kritischen Stromdichte eine verminderte Einbaurate an Metallegierungspulver und eine rauhere Schichtoberflächen an exponierten Stellen des Bauteils wie beispielsweise Kanten, Spitzen, Rundungen oder Graten gegenüber anderen Oberflächenbereichen auftreten.Comparative experiments showed unexpected advantages for this stoichiometric deposition over a pure cobalt matrix deposition. The deposition speed could be more than doubled, because surprisingly the critical current density, at which the layer quality already drops again, could be more than doubled. With pure cobalt matrix deposition, doubling the critical current density would result in a reduced installation rate of metal alloy powder and a rougher layer surface on exposed parts of the component such as edges, tips, curves or burrs compared to other surface areas.
Eine bevorzugte Ausführung des Abscheideverfahrens sieht für eine stöchiometrische Kobalt-Nickel-Matrix eine Stromdichte von 500 bis 800 A/m² vor, was vorteilhaft eine hohe Abscheidungsrate zwischen 100 µm/h und 150 µm/h bewirkt. Dabei wird vorteilhaft eine Schichtdikkenvariation von kleiner 10 % erreicht und die Einbaurate von Metalllegierungspulver auf 45 Vol. % erhöht.A preferred embodiment of the deposition process provides a current density of 500 to 800 A / m 2 for a stoichiometric cobalt-nickel matrix, which advantageously brings about a high deposition rate between 100 μm / h and 150 μm / h. A layer thickness variation of less than 10% is advantageously achieved and the rate of incorporation of metal alloy powder is increased to 45% by volume.
Im folgenden wird ein Anwendungsbeispiel der Erfindung beschrieben.An application example of the invention is described below.
In einem Elektrolytbad der Zusammensetzung:
- 320 g/l NiSO₄ · 6H₂O
- 30 g/l CoSO₄ · 6H₂O
- 50 g/l NiCl₂ · 6H₂O
- 35 g/l H₃BO₃
- 20 g/l CrAlY (Metallegierungspulver, Korngröße < 10 µm)
wird eine Turbinenschaufel mit ihrer Längsachse horizontal eingetaucht und um ihre Längsachse mit 10 U/min gedreht. Dabei wird eine geregelte Gleichstromdichte von 800 A/m² auf das Bauteil aufgeschaltet. Innerhalb von 60 Minuten scheidet sich eine Schicht aus 50 mol % Kobalt und 50 mol % Nickel mit Einlagerungen von CrAlY-Partikeln der Zusammensetzung 71 mol % Cr, 27 mol % Al, und 2 mol % Y in einer gleichmäßigen Schichtdicke auf der Ober- und Unterseite der Schaufel von 140 ± 10 µm bei einem gleichbleibenden Einbauanteil von 45 Vol. % CrAlY-Partikeln ab.In an electrolytic bath of the composition:
- 320 g / l NiSO₄ · 6H₂O
- 30 g / l CoSO₄ · 6H₂O
- 50 g / l NiCl₂ · 6H₂O
- 35 g / l H₃BO₃
- 20 g / l CrAlY (metal alloy powder, grain size <10 µm)
a turbine blade is immersed horizontally with its longitudinal axis and rotated about its longitudinal axis at 10 rpm. A regulated direct current density of 800 A / m² is applied to the component. Within 60 minutes, a layer of 50 mol% cobalt and 50 mol% nickel with inclusions of CrAlY particles of the composition 71 mol% Cr, 27 mol% Al, and 2 mol% Y separates in a uniform layer thickness on the top and Bottom of the blade from 140 ± 10 µm with a constant installation proportion of 45 vol.% CrAlY particles.
Zur Verbesserung der Schichtqualität können Netzmittel, Grundglänzer oder andere Glanzmittelzusätze dem Abscheidungsbad zugesetzt werden. Im obigen Beispiel wurde 0,4 g/l Ortho-Benzolsäuresulfid 0,2 g/l Butin-(2)-diol (1,4) und 3 ml/l SNAP A/M zusätzlich im Abscheidebad gelöst.To improve the layer quality, wetting agents, basic glosses or other additives can be added to the deposition bath. In the above example, 0.4 g / l ortho-benzene acid sulfide, 0.2 g / l butyn (2) diol (1.4) and 3 ml / l SNAP A / M were additionally dissolved in the separating bath.
In einer anschließenden Wärmebehandlung bei 1050 °C für 15 Stunden diffundieren die Matrixelemente Kobalt und Nickel ineinander und in die Oberflächen der CrAlY-Partikel, sowie in die Oberfläche des Grundwerkstoffes des Bauteils, der sich in diesem Beispiel aus folgenden Legierungsbestandteilen zusammensetzt:
0,15 % Kohlenstoff
10,0 % Chrom
15,0 % Kobalt
3,0 % Molybdän
4,7 % Titan
5,5 % Aluminium
0,05 % Zirkonium
0,015 % Bor
1,0 % Vanadium
Rest NickelIn a subsequent heat treatment at 1050 ° C for 15 hours, the matrix elements cobalt and nickel diffuse into and into each other the surfaces of the CrAlY particles, as well as the surface of the base material of the component, which in this example is made up of the following alloy components:
0.15% carbon
10.0% chromium
15.0% cobalt
3.0% molybdenum
4.7% titanium
5.5% aluminum
0.05% zirconium
0.015% boron
1.0% vanadium
Rest of nickel
Mit den obenangegebenen Parametern wurden auch Turbinenschaufeln mit nachfolgender Zusammensetzung erfolgreich beschichtet:
9,0 % Chrom
5,0 % Kobalt
9,5 % Wolfram
2,9 % Tantal
0,7 % Niob
5,5 % Aluminium
1,8 % Titan
0,03 % Kohlenstoff
Rest % NickelTurbine blades with the following composition were also successfully coated with the parameters specified above:
9.0% chromium
5.0% cobalt
9.5% tungsten
2.9% tantalum
0.7% niobium
5.5% aluminum
1.8% titanium
0.03% carbon
% Nickel
Claims (4)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3815976A DE3815976A1 (en) | 1988-05-10 | 1988-05-10 | METHOD FOR PRODUCING GALVANICALLY SEPARATED HOT GAS CORROSION LAYERS |
| DE3935957 | 1989-10-27 | ||
| DE3935957A DE3935957C1 (en) | 1988-05-10 | 1989-10-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0424863A1 true EP0424863A1 (en) | 1991-05-02 |
| EP0424863B1 EP0424863B1 (en) | 1996-04-17 |
Family
ID=39427740
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89106922A Expired - Lifetime EP0341456B1 (en) | 1988-05-10 | 1989-04-18 | Process for electrolytically depositing a metal layer resisting corrosion by hot gases |
| EP90120273A Expired - Lifetime EP0424863B1 (en) | 1988-05-10 | 1990-10-23 | Process for electrolytically depositing a metal layer resisting corrosion by hot gases |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89106922A Expired - Lifetime EP0341456B1 (en) | 1988-05-10 | 1989-04-18 | Process for electrolytically depositing a metal layer resisting corrosion by hot gases |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US4895625A (en) |
| EP (2) | EP0341456B1 (en) |
| JP (2) | JP2713458B2 (en) |
| DE (2) | DE3815976A1 (en) |
| ES (1) | ES2086348T3 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10251902A1 (en) * | 2002-11-07 | 2004-06-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for coating a substrate and coated article |
| EP2851455A1 (en) | 2013-09-18 | 2015-03-25 | MTU Aero Engines GmbH | Electroplated wear-resistant coating and method for the same |
| CN105598655A (en) * | 2016-03-02 | 2016-05-25 | 华北水利水电大学 | Method for strengthening surface of metal turbine runner blade through combination of electric spark deposition and welding |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3815976A1 (en) * | 1988-05-10 | 1989-11-23 | Mtu Muenchen Gmbh | METHOD FOR PRODUCING GALVANICALLY SEPARATED HOT GAS CORROSION LAYERS |
| GB2254338B (en) * | 1988-07-29 | 1993-02-03 | Baj Ltd | Improvements relating to the production of coatings |
| JP2949605B2 (en) * | 1991-09-20 | 1999-09-20 | 株式会社日立製作所 | Alloy-coated gas turbine blade and method of manufacturing the same |
| 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 |
| US5613705A (en) * | 1995-03-24 | 1997-03-25 | Morton International, Inc. | Airbag inflator having a housing protected from high-temperature reactive generated gases |
| EP1428982B1 (en) * | 2002-12-06 | 2009-02-04 | ALSTOM Technology Ltd | A method of depositing a local MCrAIY-coating |
| DE10259361A1 (en) * | 2002-12-18 | 2004-07-08 | Siemens Ag | Method and device for filling material separations on a surface |
| EP1616047A1 (en) * | 2003-04-11 | 2006-01-18 | Lynntech, Inc. | Compositions and coatings including quasicrystals |
| EP1533398B1 (en) * | 2003-10-24 | 2011-08-31 | Siemens Aktiengesellschaft | Process for producing an electrolyte ready for use out of waste products containing metal ions |
| US20060011482A1 (en) * | 2004-07-13 | 2006-01-19 | Barkey Dale P | Electrocodeposition of lead free tin alloys |
| EP2119805A1 (en) * | 2008-05-15 | 2009-11-18 | Siemens Aktiengesellschaft | Method for manufacturing an optimized adhesive layer through partial evaporation of the adhesive layer |
| DE102011100100A1 (en) * | 2011-04-29 | 2012-10-31 | Air Liquide Deutschland Gmbh | Method for treating a line component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182055A (en) * | 1985-10-28 | 1987-05-07 | Baj Ltd | Improvements relating to electrodeposited coatings |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2014189B (en) * | 1977-12-21 | 1982-06-09 | Bristol Aerojet Ltd | Processes for the electrodeposition of composite coatings |
| IT1224259B (en) * | 1984-10-05 | 1990-10-04 | Baj Ltd | IMPROVEMENT IN METAL PROTECTIVE COATINGS AND PREPARATION PROCEDURE |
| DE3815976A1 (en) * | 1988-05-10 | 1989-11-23 | Mtu Muenchen Gmbh | METHOD FOR PRODUCING GALVANICALLY SEPARATED HOT GAS CORROSION LAYERS |
| GB8818069D0 (en) * | 1988-07-29 | 1988-09-28 | Baj Ltd | Improvements relating to electrodeposited coatings |
-
1988
- 1988-05-10 DE DE3815976A patent/DE3815976A1/en active Granted
-
1989
- 1989-04-18 EP EP89106922A patent/EP0341456B1/en not_active Expired - Lifetime
- 1989-04-28 JP JP1111949A patent/JP2713458B2/en not_active Expired - Fee Related
- 1989-05-09 US US07/349,211 patent/US4895625A/en not_active Expired - Lifetime
- 1989-10-27 DE DE3935957A patent/DE3935957C1/de not_active Expired - Lifetime
-
1990
- 1990-10-23 EP EP90120273A patent/EP0424863B1/en not_active Expired - Lifetime
- 1990-10-23 ES ES90120273T patent/ES2086348T3/en not_active Expired - Lifetime
- 1990-10-25 JP JP02290555A patent/JP3027600B2/en not_active Expired - Fee Related
- 1990-10-26 US US07/604,825 patent/US5064510A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2182055A (en) * | 1985-10-28 | 1987-05-07 | Baj Ltd | Improvements relating to electrodeposited coatings |
Non-Patent Citations (1)
| Title |
|---|
| ELECTROPLATING AND METAL FINISHING, März 1966, Seiten 92-96; R.V. WILLIAMS: "Electrodeposited composite coatings" * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10251902A1 (en) * | 2002-11-07 | 2004-06-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for coating a substrate and coated article |
| DE10251902B4 (en) * | 2002-11-07 | 2009-05-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for coating a substrate and coated article |
| EP2851455A1 (en) | 2013-09-18 | 2015-03-25 | MTU Aero Engines GmbH | Electroplated wear-resistant coating and method for the same |
| DE102013218687A1 (en) | 2013-09-18 | 2015-04-02 | MTU Aero Engines AG | Galvanized wear protection coating and method therefor |
| US10428437B2 (en) | 2013-09-18 | 2019-10-01 | MTU Aero Engines AG | Wear-resistant coating produced by electrodeposition and process therefor |
| CN105598655A (en) * | 2016-03-02 | 2016-05-25 | 华北水利水电大学 | Method for strengthening surface of metal turbine runner blade through combination of electric spark deposition and welding |
Also Published As
| Publication number | Publication date |
|---|---|
| US4895625A (en) | 1990-01-23 |
| JPH0364497A (en) | 1991-03-19 |
| DE3815976A1 (en) | 1989-11-23 |
| EP0341456A3 (en) | 1990-05-30 |
| JP3027600B2 (en) | 2000-04-04 |
| JP2713458B2 (en) | 1998-02-16 |
| JPH03173798A (en) | 1991-07-29 |
| DE3815976C2 (en) | 1990-02-15 |
| US5064510A (en) | 1991-11-12 |
| EP0341456A2 (en) | 1989-11-15 |
| ES2086348T3 (en) | 1996-07-01 |
| EP0341456B1 (en) | 1994-11-30 |
| DE3935957C1 (en) | 1991-02-21 |
| EP0424863B1 (en) | 1996-04-17 |
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