DE102006024050A1 - Device for applying coating on surface of workpiece, comprises plasma generator for producing plasma in a plasma chamber, arrangement for producing gas flow through plasma chamber, and device for supplying and inserting coating material - Google Patents
Device for applying coating on surface of workpiece, comprises plasma generator for producing plasma in a plasma chamber, arrangement for producing gas flow through plasma chamber, and device for supplying and inserting coating material Download PDFInfo
- Publication number
- DE102006024050A1 DE102006024050A1 DE200610024050 DE102006024050A DE102006024050A1 DE 102006024050 A1 DE102006024050 A1 DE 102006024050A1 DE 200610024050 DE200610024050 DE 200610024050 DE 102006024050 A DE102006024050 A DE 102006024050A DE 102006024050 A1 DE102006024050 A1 DE 102006024050A1
- Authority
- DE
- Germany
- Prior art keywords
- plasma
- channel
- coating material
- coating
- chamber
- 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.)
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Classifications
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/38—Borides
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/513—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using plasma jets
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Aufbringen einer Beschichtung auf eine Oberfläche eines Werkstückes nach dem Oberbegriff des Anspruchs 1.The The invention relates to a device for applying a coating on a surface of a workpiece according to the preamble of claim 1.
Um die Korrosion eines metallischen Werkstückes zu verhindern, kann die Oberfläche des Werkstückes beschichtet werden, so dass das Metall nicht durch aggressive Angriffsmittel aus der Umgebung des Werkstückes zerstört wird. Besonders korrosionsbeständige Beschichtungen ergeben sich durch thermisches Spritzen oder Vakuumbeschichten.Around To prevent the corrosion of a metallic workpiece, the surface of the workpiece be coated so that the metal is not attacked by aggressive from the environment of the workpiece destroyed becomes. Particularly corrosion resistant Coatings result from thermal spraying or vacuum coating.
In
der
Eine
in
Die
Gemäß der
Bei den bekannten thermischen Spritzverfahren oder Dampfabscheidungsverfahren ist es nicht möglich, kostengünstig Beschichtungen aus hochschmelzenden Metallboriden herzustellen, die widerstandsfähig gegenüber aggressiven Angriffsmitteln sind.at the known thermal spraying method or vapor deposition method it is impossible, economical To produce coatings of refractory metal borides, the resistant across from are aggressive means of attack.
Aufgabe der Erfindung ist es, eine Vorrichtung zum Aufbringen einer Beschichtung auf eine Oberfläche eines Werkstückes zu entwickeln, die mit geringem Aufwand an Material, Kosten und Zeit die Herstellung einer kompakten und gut haftenden, korrosionsbeständigen Beschichtung aus einer hochschmelzenden Metalllegierung ermöglicht.task The invention is an apparatus for applying a coating on a surface a workpiece To develop, with little expenditure of material, costs and Time to make a compact, well-adherent, corrosion-resistant coating made of a refractory metal alloy.
Die Aufgabe wird mit einer Vorrichtung gelöst, welche die Merkmale nach Anspruch 1 aufweist. Vorteilhafte Ausgestaltungen ergeben sich durch die Merkmale der Unteransprüche.The The object is achieved with a device which the features Claim 1. Advantageous embodiments result from the features of the subclaims.
Gemäß der Erfindung ist zwischen einem Kathodenbereich eines Plasmabrenners und einer Düse ein Plasmakanal bzw. Kathodenkanal angeordnet, der mindestens eine Zuführung für einen Beschichtungsstoff und ggf. für einen oder mehrere Reaktionsstoffe aufweist. Die Temperatur in dem Kanal ist ausreichend hoch, um den Beschichtungsstoff in einer Reaktionszone zu verdampfen. Wenn das Plasma in einem Lichtbogen zwischen einer Kathode und einer Anode erzeugt wird, dann wird durch den Plasmakanal die Kathode auf einen Abstand zur Reaktionszone gebracht, so dass die Kathode im Wesentlichen nicht abbrennt. Der Plasmakanal kann bei einer Länge zwischen 2 cm und 10 cm unterschiedliche geometrische Querschnittsformen aufweisen, wie kreisförmig, quadratisch, elliptisch oder bogenförmig.According to the invention For example, a plasma channel is between a cathode region of a plasma torch and a nozzle or cathode channel arranged, the at least one feeder for a Coating material and possibly for having one or more reactants. The temperature in the Channel is high enough to contain the coating material in a reaction zone to evaporate. If the plasma in an arc between a Cathode and an anode is generated, then through the plasma channel brought the cathode at a distance to the reaction zone, so that the cathode essentially does not burn off. The plasma channel can at a length between 2 cm and 10 cm different geometric cross-sectional shapes have, like circular, square, elliptical or arcuate.
Die Vorrichtung ist insbesondere beim Beschichten von Bipolarplatten einer Brennstoffzelle mit einem hochschmelzenden Metallborid, wie Titandiborid (TiB2) oder Zirkondiborid (ZrB2), anwendbar. Das Metallborid wird pulverförmig über mindestens einen Zuführkanal in den Plasmakanal eingebracht. Die Pulverpartikel besitzen eine Größe im Bereich von 1 bis 10 μm. Neben metallischen Werkstücken können mit der Vorrichtung auch wärmestabile Keramiken oder Kunststoffe beschichtet werden.The device is particularly applicable to the coating of bipolar plates of a refractory metal boride fuel cell such as titanium diboride (TiB 2 ) or zirconium boride (ZrB 2 ). The metal boride is introduced in powder form via at least one feed channel into the plasma channel. The powder particles have a size in the range of 1 to 10 microns. In addition to metallic workpieces, heat-stable ceramics or plastics can also be coated with the device.
Beim Betrieb der Vorrichtung werden die Partikel des Beschichtungsstoffes so konditioniert, dass im Wesentlichen eine vollständige Verdampfung zu Mikroclustern aus Atomen bzw. Molekülen mit einer Clustergröße von bis zu 1000 Teilchen erfolgt. Die Vorrichtung wird vorzugsweise in einem Vakuum von 1 bis 100 mbar betrieben, wobei der Kathodenkanal von einem unter einem Druck von 2 bis 5 bar stehenden Trägergas durchströmt wird. Die verdampften Partikel des Beschichtungsstoffes treten in einer gerichteten Freistrahlexpansion aus einer Düse aus und lagern sich auf der Oberfläche des Werkstückes ab. Der Öffnungswinkel des Freistrahles liegt im Bereich von 30° bis 50°. Es ist möglich, die Oberfläche eines Werkstückes mit der Vorrichtung diskontinuierlich zu beschichten, wobei der Beschichtungsstoff in einem Schuss die gesamte Oberfläche oder Teile davon bedeckt.During operation of the device, the particles of the coating material are conditioned so that essentially a complete evaporation into microclusters of atoms or molecules with a cluster size of up to 1000 particles. The device is preferably operated in a vacuum of 1 to 100 mbar, wherein the cathode channel is flowed through by a pressure of 2 to 5 bar carrier gas. The vaporized particles of the coating material emerge from a nozzle in a directed free-space expansion and deposit on the surface of the workpiece. The opening angle of the free jet is in the range of 30 ° to 50 °. It is possible to batch the surface of a workpiece with the device, wherein the coating material in one shot covers the entire surface or parts thereof.
Neben einer Zuführung für einen Beschichtungsstoff können weiteren Zuführkanäle in dem Plasmakanal münden. Insbesondere kann ein weiterer Zuführkanal zum Einbringen eines Reaktionsstoffes dienen. Der Reaktionsstoff reagiert mit dem Beschichtungsstoff. Die Beschichtung kann mit der Vorrichtung oxidativ oder reduktiv erfolgen, indem beispielsweise Sauerstoff oder Wasserstoff in den Plasmakanal gebracht wird.Next a feeder for one Coating material can further feed channels in the plasma channel lead. In particular, a further feed channel for introducing a Reactive serve. The reaction substance reacts with the coating material. The coating can be oxidative or reductive with the device take place by, for example, oxygen or hydrogen in the Plasma channel is brought.
Als Beschichtung für Bipolarplatten von Brennstoffzellen kommen weiterhin Stoffe mit guter elektrischer Leitfähigkeit zum Einsatz, wie Dichromnitrid (Cr2N), Chromcyanid (CrCN), Chromkarbide, Titanoxide, Titansuboxide, Boride, Nitride, Kohlenstoff, Wolfram, Titan, Chrom, und Niob. Zur Verbesserung ihrer elektrischen Leitfähigkeit können die vorgenannten Stoffe gegebenenfalls dotiert werden.As a coating for bipolar plates of fuel cells continue to come materials with good electrical conductivity used, such as dichromium nitride (Cr 2 N), chromium cyanide (CrCN), chromium carbides, titanium oxides, titanium suboxides, borides, nitrides, carbon, tungsten, titanium, chromium, and niobium. To improve their electrical conductivity, the abovementioned substances can optionally be doped.
Ein Ausführungsbeispiel für eine Vorrichtung zum Beschichten einer Bipolarplatte soll nachstehend anhand einer Figur erläutert werden.One embodiment for one Apparatus for coating a bipolar plate will be described below explained with reference to a figure become.
Die
Figur zeigt eine Beschichtungsanlage mit einer unter Vakuum stehenden
Beschichtungskammer
In
den Plasmakanal
In
der Beschichtungskammer
Bei
Anlegen der Spannung und bei Zufuhr des Trägergases brennt zwischen der
Kathode
- 11
- Beschichtungskammercoating chamber
- 22
- Leitungmanagement
- 33
- Pumpepump
- 44
- Plasmabrennerplasma torch
- 55
- Kathodecathode
- 66
- Anodeanode
- 7, 87, 8th
- Leitungmanagement
- 99
- Spannungsquellevoltage source
- 1010
- TrägergaskanalCarrier gas channel
- 1111
- Leitungmanagement
- 1212
- TrägergasquelleCarrier gas source
- 1313
- Plasmakammerplasma chamber
- 1414
- Plasmakanalplasma channel
- 1515
- Düsejet
- 16–1916-19
- KühlwasserkanalCooling water channel
- 20–2320-23
- Leitungmanagement
- 24, 2524 25
- Thermostatthermostat
- 26–2826-28
- Zufuhrkanalsupply channel
- 2929
- Leitungmanagement
- 3030
- Vorratsbehälterreservoir
- 3131
- Leitungmanagement
- 3232
- Vorratsbehälterreservoir
- 3333
- Leitungmanagement
- 3434
- Vorratsbehälterreservoir
- 3535
- Aufnahmeadmission
- 3636
- Bipolarplattebipolar
- 3737
- Getriebetransmission
- 3939
- Leitungmanagement
- 4040
- Motorsteuerungmotor control
- 4141
- LichtbogenElectric arc
- 4242
- Oberflächesurface
- 4343
- Beschichtungcoating
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE200610024050 DE102006024050B4 (en) | 2006-05-23 | 2006-05-23 | Device for applying a coating to a surface of a workpiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610024050 DE102006024050B4 (en) | 2006-05-23 | 2006-05-23 | Device for applying a coating to a surface of a workpiece |
Publications (2)
Publication Number | Publication Date |
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DE102006024050A1 true DE102006024050A1 (en) | 2007-12-06 |
DE102006024050B4 DE102006024050B4 (en) | 2009-08-20 |
Family
ID=38650228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE200610024050 Expired - Fee Related DE102006024050B4 (en) | 2006-05-23 | 2006-05-23 | Device for applying a coating to a surface of a workpiece |
Country Status (1)
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DE (1) | DE102006024050B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014100385A1 (en) * | 2014-01-15 | 2015-07-16 | Plasma Innovations GmbH | Plasma coating method for depositing a functional layer and separator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3422718A1 (en) * | 1984-06-19 | 1986-01-09 | Plasmainvent AG, Zug | VACUUM PLASMA COATING SYSTEM |
US5104634A (en) * | 1989-04-20 | 1992-04-14 | Hercules Incorporated | Process for forming diamond coating using a silent discharge plasma jet process |
US5951771A (en) * | 1996-09-30 | 1999-09-14 | Celestech, Inc. | Plasma jet system |
US20020110695A1 (en) * | 1999-03-17 | 2002-08-15 | Yang Barry Lee-Mean | Multilayer article and method of making by arc plasma deposition |
US6800336B1 (en) * | 1999-10-30 | 2004-10-05 | Foernsel Peter | Method and device for plasma coating surfaces |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3538390A1 (en) * | 1985-10-29 | 1987-04-30 | Deutsche Forsch Luft Raumfahrt | COATING FOR A SUBSTRATE AND METHOD FOR THE PRODUCTION THEREOF |
DE4105407A1 (en) * | 1991-02-21 | 1992-08-27 | Plasma Technik Ag | PLASMA SPRAYER FOR SPRAYING SOLID, POWDER-SHAPED OR GAS-SHAPED MATERIAL |
DE19805683A1 (en) * | 1998-02-12 | 1999-08-19 | Forschungszentrum Juelich Gmbh | Connector element especially a bipolar plate in a fuel cell for mobile applications, e.g. automobiles |
DE19937255B4 (en) * | 1999-08-06 | 2004-05-06 | Ballard Power Systems Inc., Burnaby | Corrosion resistant bipolar plate for PEM fuel cells and use |
-
2006
- 2006-05-23 DE DE200610024050 patent/DE102006024050B4/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3422718A1 (en) * | 1984-06-19 | 1986-01-09 | Plasmainvent AG, Zug | VACUUM PLASMA COATING SYSTEM |
US5104634A (en) * | 1989-04-20 | 1992-04-14 | Hercules Incorporated | Process for forming diamond coating using a silent discharge plasma jet process |
US5951771A (en) * | 1996-09-30 | 1999-09-14 | Celestech, Inc. | Plasma jet system |
US20020110695A1 (en) * | 1999-03-17 | 2002-08-15 | Yang Barry Lee-Mean | Multilayer article and method of making by arc plasma deposition |
US6800336B1 (en) * | 1999-10-30 | 2004-10-05 | Foernsel Peter | Method and device for plasma coating surfaces |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014100385A1 (en) * | 2014-01-15 | 2015-07-16 | Plasma Innovations GmbH | Plasma coating method for depositing a functional layer and separator |
WO2015107059A1 (en) | 2014-01-15 | 2015-07-23 | Plasma Innovations GmbH | Plasma coating method for depositing a functional layer, and depositing device |
CN106232865A (en) * | 2014-01-15 | 2016-12-14 | 等离子创新有限公司 | Plasma coated method and precipitation equipment for deposit functional layers |
CN106232865B (en) * | 2014-01-15 | 2019-02-15 | 等离子创新有限公司 | Plasma coated method and precipitation equipment for deposit functional layers |
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Publication number | Publication date |
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DE102006024050B4 (en) | 2009-08-20 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |