CA2454075A1 - Device for the electrodeposition of aluminium or aluminium alloys from organometallic electrolytes containing aluminium alkyl - Google Patents
Device for the electrodeposition of aluminium or aluminium alloys from organometallic electrolytes containing aluminium alkyl Download PDFInfo
- Publication number
- CA2454075A1 CA2454075A1 CA002454075A CA2454075A CA2454075A1 CA 2454075 A1 CA2454075 A1 CA 2454075A1 CA 002454075 A CA002454075 A CA 002454075A CA 2454075 A CA2454075 A CA 2454075A CA 2454075 A1 CA2454075 A1 CA 2454075A1
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- Prior art keywords
- drive unit
- aluminium
- barrel
- plating
- plating barrel
- 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.)
- Abandoned
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/06—Suspending or supporting devices for articles to be coated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/004—Sealing devices
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/16—Apparatus for electrolytic coating of small objects in bulk
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/16—Apparatus for electrolytic coating of small objects in bulk
- C25D17/18—Apparatus for electrolytic coating of small objects in bulk having closed containers
- C25D17/20—Horizontal barrels
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Vehicle Body Suspensions (AREA)
- Prevention Of Electric Corrosion (AREA)
- Primary Cells (AREA)
Abstract
The invention relates to a device for the electrodeposition of aluminium and/or aluminium alloys from organometallic electrolytes containing an aluminium alkyl complex, on materials to be coated. Said device comprises a support frame with a trestle and transport recesses, at least one electroplating drum, at least one drive unit for said electroplating drum an d one or more support arms for the drum. The device is characterised in that t he drive unit (3) is located in an encapsulated gas-tight housing, the electroplating drum (13) has a perforated internal tube (15), which is arranged along the longitudinal axis of the drum and is open at the side, whereby the lateral openings are located directly opposite the electrolyte supply in the electrolyte container and that the electroplating drum (13) consists of a material, which is stable both in aqueous and in organometalli c electrolytes at temperatures of up to 110 ~C.
Description
P20211-et.doc A Device for the Electrodeposition of Aluminum or Aluminum Alloys from Organometallic Electrolytes Containing Alkylaluminum The invention relates to a device for the electrodeposition of aluminum or alumi-num alloys from organometallic electrolytes containing alkylaluminum, said de-vice consisting of a supporting frame with a stand and transportation bearings, at least one plating barrel, at least one drive unit for the plating barrel, and one or more holding arms for the plating barrel.
Electroplating of small parts and bulk material in aqueous solution, such as nickel-plating or zinc-plating, is usually effected in rotating, perforated barrels made of polyethylene or polypropylene. These barrels are driven by electric motors arranged in a plastic housing in the supporting rack. Current transfer to the goods mostly is effected by means of flexible copper cords arranged laterally on the barrels and enveloped with a plasticized PVC tube to prevent undesirable epitaxial growth of metal.
Electrodeposition of aluminum or aluminum alloys from aqueous solutions is not possible due to the very low position of the potential of aluminum.
Consequently, electrodeposition must be effected from non-aqueous organic systems. In par-ticular, electrolytes containing alkylaluminum are used to this end, with organic solvents normally being employed. Therefore, deposition of finely crystalline aluminum and layers of aluminum alloys is achieved in an excellent fashion from anhydrous alkylorganoaluminum electrolyte systems, the alkylaluminum com-plexes being dissolved in aromatic hydrocarbons such as toluene.
However, the plating barrels employed in aqueous electroplating cannot be used in organic electrolyte systems. This is connected with the organic solvents being used and with the operating temperatures of from 90 to 100°C where such elec-troplating is carried out. At such temperatures and in the corresponding organic solvents, conventional barrels for aqueous systems are not stable, undergoing r P20211-et. doc decomposition or dissolution, and thus may contaminate the electrolyte. Fur-thermore, there is a risk of distortion of the barrels to such an extent that me-chanical stability is no longer guaranteed.
Also, electroplating systems for bulk material which are used in organic media, particularly for the deposition of aluminum, are known from the prior art. How-ever, these systems failed to gain general acceptance in practice.
This also includes the state of the art described in EP 0 042 503 A1. Therein, a device for the electrodeposition of aluminum from organic electrolytes has been described. The aim of the above invention is to create a device where the plating barrel is not required to be removed from the plating trough for loading and un-loading. The above state of the art describes the use of a conveyor means for the parts to be coated, which is used to fill the plating barrel and extends via a gate into the interior of the plating trough, terminating above a closable opening of the plating barrel. The barrel can be opened and closed from outside, and, in order to empty the barrel, a discharge container exposable to inert gas and inert fluid is provided, which is arranged beneath the plating trough and is connected with same via a tube-shaped connector element which can be shut off.
The above state of the art represents a highly complex construction of a plating barrel which failed to gain general acceptance in practice as yet.
The invention is based on the object of providing a device for the electrodeposi-tion of aluminum from organic electrolyte systems, in which device the plating barrel is modified in such a way that the plating barrel is stable in the media em-ployed and at the temperatures applied, has a safe drive in flammable media, and nonetheless allows high-quality coating with aluminum or alloys thereof.
Said object is accomplished by means of a device wherein the drive unit 3 is ar-ranged in an encapsulated gas-tight housing, the plating barrel 13 has a perfo-P20211-et.doc rated inner tube 15 arranged along the longitudinal axis thereof and open at its side, the lateral openings being arranged directly opposite the electrolyte feed in the electrolyte container, and the plating barrel 13 consisting of a material which is stable both in aqueous and organometallic electrolytes at temperatures up to 110°C.
By encapsulating the drive unit in a gas-tight housing, driving the barrel in flam-mable liquids is made much safer. The case preferably consists of stainless steel, and the drive shaft for the barrel is conducted through the housing wall by means of a gas-tight shaft guide with a sealing, preferably one made of poly-tetrafluoroethylene.
To protect the drive motor, and as an additional safeguard against penetrating flammable organic solvents, the housing case is flooded with an inert gas such as nitrogen or argon and provided with an overpressure of preferably 0.1 to 0.3 bars. The housing is also equipped with a feed valve and an overpressure blow-off valve with a nonreturn flap.
In each loadinglunloading procedure, inert gas at a pressure of about 0.1 to 0.2 bars above the set value of the blow-off valve is automatically fed via the feed valve into the drive unit housing on the station. Following each coating process, the inert gas atmosphere in the drive unit housing is purged, and the overpres-sure in the housing is reset after each cycle. The purging time or the amount of inert purge gas is set via the plant controls.
Another problem of the plating barrels known from the prior art is the stability of the barrel material. In the long run, conventional barrel materials such as poly-ethylene and polypropylene are not stable in the organic solvents used in alumi-num coating.
This problem is solved ~by using suitable plastics insoluble in organic solvents and reinforced with fiberglass. In a preferred fashion, the plating barrels are pro-P20211-et.doc duced from at least glass-fiber reinforced polyphenylene sulfide including a pro-portion of glass fiber of at least 40%. This ensures chemical stability of the plat-ing barrels at operating temperatures in the electrolyte of up to 110°C, as well as abrasion resistance.
In a preferred embodiment, the drive gearwheels are made of the same material.
Another advantage is that this material is also stable in dilute acids and bases, so that pretreatment and secondary treatment of the parts to be electroplated can be effected in aqueous systems such as acids andlor bases in the same barrel without transferring.
Providing the plating barrel with a perforated inner tube results in an improve-ment of electrolyte circulation. In electrodeposition of metals from organic elec-trolytes, the electrolyte circulation plays an exceptionally important role because, as a result of the limited solubility of organometallic complexes, depletion of metal ions in the liquid boundary layer near the product may rapidly occur in case of insufficient electrolyte circulation. This results in quality losses in the coating of the materials, especially in burning of the materials to be coated, in rough and uneven layers, and possibly even in electrolyte decomposition. In par-ticular, this problem arises in alloy deposition of aluminum, but is also observed in pure aluminum deposition. To avoid this problem, the inventive device in the barrel is equipped with a perforated inner tube which is arranged along the lon-gitudinal axis of the plating barrel and has lateral openings facing the container wall of the electrolyte container. When placing the device of the invention in the electrolytic bath, the lateral openings of the inner tube are situated directly oppo-site the electrolyte feed lines in the container wall. In this way, pumping of fresh electrolyte at high speed through the inner tube and directly to the substrate is accomplished during coating, so that good exchange is ensured and the draw-backs described above are prevented from occurring. In a preferred embodi-ment, it is also possible to arrange an additional auxiliary anode in the inner P20211-et.doc tube, thereby further augmenting the local concentration of metal ions and in-creasing the coating rate.
According to the prior art, the holding arms of conventional barrels are mostly rubber-coated and thus unstable in organic electrolytic baths. This also applies to the conventional PVC jackets of electric conductor tracks for the electrolyte current. When using such an arrangement, epitaxial growth of metal on the power supply bars is therefore to be expected. According to the invention, this problem is solved in that the holding arm in the form of a hollow body consists of steel and has a core of polyphenylene sulfide. Arranged in this core of insulating material is the power supply bar for the power supply of electrolysis. It is only in-side the barrel where connection between the power supply bar and the contact bulb in the product is made in the bearing of the holding arm. Owing to this type of construction, additional protection of the power supply bar against undesirable epitaxial growth of metal is no longer necessary. The holding arm itself has no electric potential applied thereto and is additionally protected on the outside by a plastic layer coated thereon, preferably one made of PVDF (polyvinylidene fluo-ride) or of thermoplastic fluorocarbons based on ethylene and chlorotrifluoroeth-ylene.
The invention will be illustrated in more detail with reference to Figure 1 below.
The numeral 1 designates the supporting frame with stand, which includes the single elements of the device, the plating barrel, the drive unit, and the holding arms. The supporting frame has transportation bearings 4 arranged thereon which are used to lower or lift the device into or out of the respective electrolyte or rinsing baths.
The supporting frame has the drive motor 3 encapsulated therein, which is sus-pended so as to be electrically insulated and has a gas-tight shaft guide 5. A
drive gearwheel 6 preferably made of polyphenylene sulfide is arranged at the end of the shaft. The drive gearwheels drive the plating barrel 13 which prefera-P20211-et.doc bly consists of glass-fiber reinforced polyphenylene sulfide. The plating barrel 13 is connected with the supporting frame 1 via the holding arms 11. The holding arms 11 are preferably made of stainless steel, they are hollow and coated with fluoropolymers on the outside thereof. The hollow space of the holding arms 11 includes an insulating material wherein the power supply bars 9, 10 for the elec-trolysis power supply are arranged. The numeral 12 designates the bearing block for the plating barrel. The plating barrel has perforated side walls 14 and a perforated inner tube 15 which is open at its side. An inner auxiliary anode can be introduced into the barrel through this tube so as to achieve higher elec-trolyte concentrations near the material to be coated. The numeral 18 designates the pick-up contacts arranged in the barrel, which preferably consist of copper.
Furthermore, flexible current transfer contacts 16 are situated inside the plating barrel.
The numeral 9 designates the power supply line far the material to be coated, which line is insulated inside the barrel holders. The numeral 7 designates the inert gas vent of the drive unit housing, including a nonreturn flap.
Using the device according to the invention, it is possible to produce high-quality coatings of aluminum or aluminum alloys. Coatings of magnesium and magne-sium alloys are also possible, in which case the corresponding alkymagnesium-containing electrolytes are employed. The device of the invention is hard-wearing and can also be used in aqueous systems, e.g. in rinsing procedures.
P20211-et.doc Reference list 1 Stand 2 Power supply bar 3 Encapsulated drive motor with electrically insulated suspension 4 Transportation bearings Gas-tight shaft guide 6 Drive gearwheels 7 Inert gas vent of motor housing with nonreturn flap 8 Inert gas purge valve 9 Power supply line for material to be coated, insulated inside barrel holder Insulating material inside holder 11 Barrel holder made of stainless steel, coated with PVDFIHaIar on its out-side 12 Bearing block for barrel 13 Barrel made of glass-fiber reinforced PPS
14 Perforated side walls Perforated inner tube 16 Flexible current transfer contacts 17 Inner auxiliary anode 18 Pick-up contacts
Electroplating of small parts and bulk material in aqueous solution, such as nickel-plating or zinc-plating, is usually effected in rotating, perforated barrels made of polyethylene or polypropylene. These barrels are driven by electric motors arranged in a plastic housing in the supporting rack. Current transfer to the goods mostly is effected by means of flexible copper cords arranged laterally on the barrels and enveloped with a plasticized PVC tube to prevent undesirable epitaxial growth of metal.
Electrodeposition of aluminum or aluminum alloys from aqueous solutions is not possible due to the very low position of the potential of aluminum.
Consequently, electrodeposition must be effected from non-aqueous organic systems. In par-ticular, electrolytes containing alkylaluminum are used to this end, with organic solvents normally being employed. Therefore, deposition of finely crystalline aluminum and layers of aluminum alloys is achieved in an excellent fashion from anhydrous alkylorganoaluminum electrolyte systems, the alkylaluminum com-plexes being dissolved in aromatic hydrocarbons such as toluene.
However, the plating barrels employed in aqueous electroplating cannot be used in organic electrolyte systems. This is connected with the organic solvents being used and with the operating temperatures of from 90 to 100°C where such elec-troplating is carried out. At such temperatures and in the corresponding organic solvents, conventional barrels for aqueous systems are not stable, undergoing r P20211-et. doc decomposition or dissolution, and thus may contaminate the electrolyte. Fur-thermore, there is a risk of distortion of the barrels to such an extent that me-chanical stability is no longer guaranteed.
Also, electroplating systems for bulk material which are used in organic media, particularly for the deposition of aluminum, are known from the prior art. How-ever, these systems failed to gain general acceptance in practice.
This also includes the state of the art described in EP 0 042 503 A1. Therein, a device for the electrodeposition of aluminum from organic electrolytes has been described. The aim of the above invention is to create a device where the plating barrel is not required to be removed from the plating trough for loading and un-loading. The above state of the art describes the use of a conveyor means for the parts to be coated, which is used to fill the plating barrel and extends via a gate into the interior of the plating trough, terminating above a closable opening of the plating barrel. The barrel can be opened and closed from outside, and, in order to empty the barrel, a discharge container exposable to inert gas and inert fluid is provided, which is arranged beneath the plating trough and is connected with same via a tube-shaped connector element which can be shut off.
The above state of the art represents a highly complex construction of a plating barrel which failed to gain general acceptance in practice as yet.
The invention is based on the object of providing a device for the electrodeposi-tion of aluminum from organic electrolyte systems, in which device the plating barrel is modified in such a way that the plating barrel is stable in the media em-ployed and at the temperatures applied, has a safe drive in flammable media, and nonetheless allows high-quality coating with aluminum or alloys thereof.
Said object is accomplished by means of a device wherein the drive unit 3 is ar-ranged in an encapsulated gas-tight housing, the plating barrel 13 has a perfo-P20211-et.doc rated inner tube 15 arranged along the longitudinal axis thereof and open at its side, the lateral openings being arranged directly opposite the electrolyte feed in the electrolyte container, and the plating barrel 13 consisting of a material which is stable both in aqueous and organometallic electrolytes at temperatures up to 110°C.
By encapsulating the drive unit in a gas-tight housing, driving the barrel in flam-mable liquids is made much safer. The case preferably consists of stainless steel, and the drive shaft for the barrel is conducted through the housing wall by means of a gas-tight shaft guide with a sealing, preferably one made of poly-tetrafluoroethylene.
To protect the drive motor, and as an additional safeguard against penetrating flammable organic solvents, the housing case is flooded with an inert gas such as nitrogen or argon and provided with an overpressure of preferably 0.1 to 0.3 bars. The housing is also equipped with a feed valve and an overpressure blow-off valve with a nonreturn flap.
In each loadinglunloading procedure, inert gas at a pressure of about 0.1 to 0.2 bars above the set value of the blow-off valve is automatically fed via the feed valve into the drive unit housing on the station. Following each coating process, the inert gas atmosphere in the drive unit housing is purged, and the overpres-sure in the housing is reset after each cycle. The purging time or the amount of inert purge gas is set via the plant controls.
Another problem of the plating barrels known from the prior art is the stability of the barrel material. In the long run, conventional barrel materials such as poly-ethylene and polypropylene are not stable in the organic solvents used in alumi-num coating.
This problem is solved ~by using suitable plastics insoluble in organic solvents and reinforced with fiberglass. In a preferred fashion, the plating barrels are pro-P20211-et.doc duced from at least glass-fiber reinforced polyphenylene sulfide including a pro-portion of glass fiber of at least 40%. This ensures chemical stability of the plat-ing barrels at operating temperatures in the electrolyte of up to 110°C, as well as abrasion resistance.
In a preferred embodiment, the drive gearwheels are made of the same material.
Another advantage is that this material is also stable in dilute acids and bases, so that pretreatment and secondary treatment of the parts to be electroplated can be effected in aqueous systems such as acids andlor bases in the same barrel without transferring.
Providing the plating barrel with a perforated inner tube results in an improve-ment of electrolyte circulation. In electrodeposition of metals from organic elec-trolytes, the electrolyte circulation plays an exceptionally important role because, as a result of the limited solubility of organometallic complexes, depletion of metal ions in the liquid boundary layer near the product may rapidly occur in case of insufficient electrolyte circulation. This results in quality losses in the coating of the materials, especially in burning of the materials to be coated, in rough and uneven layers, and possibly even in electrolyte decomposition. In par-ticular, this problem arises in alloy deposition of aluminum, but is also observed in pure aluminum deposition. To avoid this problem, the inventive device in the barrel is equipped with a perforated inner tube which is arranged along the lon-gitudinal axis of the plating barrel and has lateral openings facing the container wall of the electrolyte container. When placing the device of the invention in the electrolytic bath, the lateral openings of the inner tube are situated directly oppo-site the electrolyte feed lines in the container wall. In this way, pumping of fresh electrolyte at high speed through the inner tube and directly to the substrate is accomplished during coating, so that good exchange is ensured and the draw-backs described above are prevented from occurring. In a preferred embodi-ment, it is also possible to arrange an additional auxiliary anode in the inner P20211-et.doc tube, thereby further augmenting the local concentration of metal ions and in-creasing the coating rate.
According to the prior art, the holding arms of conventional barrels are mostly rubber-coated and thus unstable in organic electrolytic baths. This also applies to the conventional PVC jackets of electric conductor tracks for the electrolyte current. When using such an arrangement, epitaxial growth of metal on the power supply bars is therefore to be expected. According to the invention, this problem is solved in that the holding arm in the form of a hollow body consists of steel and has a core of polyphenylene sulfide. Arranged in this core of insulating material is the power supply bar for the power supply of electrolysis. It is only in-side the barrel where connection between the power supply bar and the contact bulb in the product is made in the bearing of the holding arm. Owing to this type of construction, additional protection of the power supply bar against undesirable epitaxial growth of metal is no longer necessary. The holding arm itself has no electric potential applied thereto and is additionally protected on the outside by a plastic layer coated thereon, preferably one made of PVDF (polyvinylidene fluo-ride) or of thermoplastic fluorocarbons based on ethylene and chlorotrifluoroeth-ylene.
The invention will be illustrated in more detail with reference to Figure 1 below.
The numeral 1 designates the supporting frame with stand, which includes the single elements of the device, the plating barrel, the drive unit, and the holding arms. The supporting frame has transportation bearings 4 arranged thereon which are used to lower or lift the device into or out of the respective electrolyte or rinsing baths.
The supporting frame has the drive motor 3 encapsulated therein, which is sus-pended so as to be electrically insulated and has a gas-tight shaft guide 5. A
drive gearwheel 6 preferably made of polyphenylene sulfide is arranged at the end of the shaft. The drive gearwheels drive the plating barrel 13 which prefera-P20211-et.doc bly consists of glass-fiber reinforced polyphenylene sulfide. The plating barrel 13 is connected with the supporting frame 1 via the holding arms 11. The holding arms 11 are preferably made of stainless steel, they are hollow and coated with fluoropolymers on the outside thereof. The hollow space of the holding arms 11 includes an insulating material wherein the power supply bars 9, 10 for the elec-trolysis power supply are arranged. The numeral 12 designates the bearing block for the plating barrel. The plating barrel has perforated side walls 14 and a perforated inner tube 15 which is open at its side. An inner auxiliary anode can be introduced into the barrel through this tube so as to achieve higher elec-trolyte concentrations near the material to be coated. The numeral 18 designates the pick-up contacts arranged in the barrel, which preferably consist of copper.
Furthermore, flexible current transfer contacts 16 are situated inside the plating barrel.
The numeral 9 designates the power supply line far the material to be coated, which line is insulated inside the barrel holders. The numeral 7 designates the inert gas vent of the drive unit housing, including a nonreturn flap.
Using the device according to the invention, it is possible to produce high-quality coatings of aluminum or aluminum alloys. Coatings of magnesium and magne-sium alloys are also possible, in which case the corresponding alkymagnesium-containing electrolytes are employed. The device of the invention is hard-wearing and can also be used in aqueous systems, e.g. in rinsing procedures.
P20211-et.doc Reference list 1 Stand 2 Power supply bar 3 Encapsulated drive motor with electrically insulated suspension 4 Transportation bearings Gas-tight shaft guide 6 Drive gearwheels 7 Inert gas vent of motor housing with nonreturn flap 8 Inert gas purge valve 9 Power supply line for material to be coated, insulated inside barrel holder Insulating material inside holder 11 Barrel holder made of stainless steel, coated with PVDFIHaIar on its out-side 12 Bearing block for barrel 13 Barrel made of glass-fiber reinforced PPS
14 Perforated side walls Perforated inner tube 16 Flexible current transfer contacts 17 Inner auxiliary anode 18 Pick-up contacts
Claims (8)
1. A device for the electrodeposition of aluminum and/or aluminum alloys from organometallic electrolytes containing alkylaluminum complexes on materi-als to be coated, said device consisting of a supporting frame with a stand and transportation bearings, at least one plating barrel, at least one drive unit for the plating barrel, and one or more holding arms for the plating bar-rel, characterized in that the drive unit (3) is arranged in an encapsulated gas-tight housing, the plating barrel (13) has a perforated inner tube (15) arranged along the longitudinal axis thereof and open at its side, so that , when placing the de-vice in an electrolyte container, the lateral openings are arranged directly opposite the electrolyte feed in the electrolyte container, the plating barrel (13) consists of a material which is stable both in aqueous and organometallic electrolytes at temperatures up to 110°C.
2. The device according to claim 1, characterized in that the plating barrel (13) consists of polyphenylene sulfide reinforced with at least 40 wt.-% of glass fiber.
3. The device according to claim 1 or 2, characterized in that the drive unit (3) is provided with an automatic purging and pressurizing device for inert gas.
4. The device according to claims 1 to 3, characterized in that an auxiliary anode (17) is arranged in the inner tube (15) in order to increase the concentration of metal ions.
5. The device according to claims 1 to 4, characterized in that the drive unit (3) has a drive shaft which is conducted through the housing wall of the drive unit (3) via a gas-tight shaft guide (5) made of polytetrafluoroethylene.
6. The device according to claims 1 to 5, characterized in that the holding arms (11) are hollow bodies made of steel, being provided with a core (10) of polyphenylene sulfide.
7. The device according to claims 1 to 6, characterized in that the holding arms on the outside thereof are coated with a plastic layer of polyvinylidene fluoride or thermoplastic fluorocarbon based on ethylene and chlorotri-fluoroethylene.
8. The device according to claim 6, characterized in that the power supply bars for the electrolysis power supply are arranged in the core of poly-phenylene sulfide.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP01118392A EP1279751A1 (en) | 2001-07-28 | 2001-07-28 | Apparatus for galvanic deposition of aluminium or aluminium alloys from metallorganic aluminium alkyl containing electrolytes |
| EP01118392.8 | 2001-07-28 | ||
| PCT/EP2002/008329 WO2003012176A1 (en) | 2001-07-28 | 2002-07-26 | Device for the electrodeposition of aluminium or aluminium alloys from organometallic electrolytes containing aluminium alkyl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2454075A1 true CA2454075A1 (en) | 2003-02-13 |
Family
ID=8178187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002454075A Abandoned CA2454075A1 (en) | 2001-07-28 | 2002-07-26 | Device for the electrodeposition of aluminium or aluminium alloys from organometallic electrolytes containing aluminium alkyl |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US20040256219A1 (en) |
| EP (2) | EP1279751A1 (en) |
| JP (1) | JP4149919B2 (en) |
| KR (1) | KR100867354B1 (en) |
| CN (1) | CN1283850C (en) |
| AT (1) | ATE289635T1 (en) |
| BR (1) | BR0211467A (en) |
| CA (1) | CA2454075A1 (en) |
| CZ (1) | CZ297865B6 (en) |
| DE (1) | DE50202333D1 (en) |
| MX (1) | MXPA04000859A (en) |
| NO (1) | NO20040373L (en) |
| RU (1) | RU2287619C2 (en) |
| WO (1) | WO2003012176A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1524336A1 (en) * | 2003-10-18 | 2005-04-20 | Aluminal Oberflächtentechnik GmbH & Co. KG | Workpieces coated with an aluminum magnesium alloy |
| EP1743959A1 (en) | 2005-07-15 | 2007-01-17 | Aluminal Oberflächentechnik GmbH & Co. KG | Device for the electrodeposition of metals and/or metal alloys by use of an electroplating drum |
| CN102817053B (en) * | 2012-09-14 | 2016-03-09 | 昆山拓安塑料制品有限公司 | A kind of product that improves is aluminized the protective tooling of efficiency |
| EP2813602A1 (en) * | 2013-06-14 | 2014-12-17 | ATOTECH Deutschland GmbH | Holding device for a substrate holder for vertical galvanic metal deposition on a substrate to be treated; and a substrate holder for being inserted in such a device |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3479272A (en) * | 1966-08-09 | 1969-11-18 | Paul W Sandrock | Apparatus for plating,blackening,pickling,stripping and the like |
| US3467272A (en) * | 1968-04-18 | 1969-09-16 | Sterling Seal Co | Screw threaded closure for a container |
| US3824115A (en) * | 1969-06-12 | 1974-07-16 | Kureha Chemical Ind Co Ltd | Polyvinylidene fluoride composition and coating thereof |
| JPS5031861B1 (en) * | 1970-07-09 | 1975-10-15 | ||
| CH537984A (en) * | 1971-05-13 | 1973-06-15 | Universo Sa | Electroplating appts - with direct liquid injection into rotatable barrel |
| US3767554A (en) * | 1971-06-08 | 1973-10-23 | Westlake Plastics Co | Plastic electroplating barrel |
| US3969212A (en) * | 1975-04-03 | 1976-07-13 | The Albert Singleton Corporation | Reinforced hanger bracket for electroplating barrel and method of reinforcing a plastic bar |
| CH603832A5 (en) * | 1975-08-21 | 1978-08-31 | Siemens Ag | |
| DE2836183C2 (en) * | 1978-08-18 | 1982-11-18 | Hans 8500 Nürnberg Henig | Process for drying a batch of pourable mass parts and device for carrying out the process |
| US4242192A (en) * | 1979-09-06 | 1980-12-30 | The United States Of America As Represented By The Secretary Of The Interior | Electrolytic stripping cell |
| DE3023129C2 (en) * | 1980-06-20 | 1982-04-15 | Siemens AG, 1000 Berlin und 8000 München | Device for the galvanic deposition of aluminum |
| DE3236138A1 (en) * | 1982-09-29 | 1984-03-29 | Siemens AG, 1000 Berlin und 8000 München | DEVICE FOR GALVANIC DEPOSITION OF ALUMINUM |
| US4571291A (en) * | 1984-08-20 | 1986-02-18 | Alumatec, Inc. | Apparatus for the electrodeposition of metal |
| DE3660818D1 (en) * | 1985-07-09 | 1988-11-03 | Siemens Ag | Apparatus for the surface treatment of bulk goods |
| EP0220419B1 (en) * | 1985-09-17 | 1989-01-25 | Siemens Aktiengesellschaft | Apparatus for the electrolytic treatment of bulk articles |
| JPH07100762B2 (en) * | 1985-12-12 | 1995-11-01 | 東ソー株式会社 | Polyphenylene sulfide resin composition for metallurgy |
| US4994163A (en) * | 1990-05-10 | 1991-02-19 | Lin Sheng R | Rotatable wastewater metal-reclaimation device |
| US5141615A (en) * | 1990-07-16 | 1992-08-25 | Nisshin Steel Co., Ltd. | Aluminum electroplating apparatus |
| DE19519492A1 (en) * | 1995-05-27 | 1996-11-28 | Miele & Cie | Carrier for metal workpieces |
| DE19541231B4 (en) * | 1995-11-06 | 2005-04-07 | Hans Henig | Device for the electrolytic surface treatment of pourable mass parts in a submerged drum and method of operation of this device |
| DE29518476U1 (en) * | 1995-11-21 | 1996-02-15 | Eberleh Heinz Dieter | Fiber-free insulation material for thermal insulation |
| US6355146B1 (en) * | 1996-04-03 | 2002-03-12 | The Regents Of The University Of California | Sputtering process and apparatus for coating powders |
| GB2321864B (en) * | 1997-02-11 | 2001-05-30 | Protective Finishing Group Ltd | Apparatus and method for removing excess liquid from articles |
| DE29818476U1 (en) * | 1998-10-16 | 1999-01-14 | Linnhoff & Pasternak Gmbh | Loading and unloading device for the galvanic surface treatment of parts in bathrooms |
-
2001
- 2001-07-28 EP EP01118392A patent/EP1279751A1/en not_active Withdrawn
-
2002
- 2002-07-26 WO PCT/EP2002/008329 patent/WO2003012176A1/en active IP Right Grant
- 2002-07-26 AT AT02791472T patent/ATE289635T1/en not_active IP Right Cessation
- 2002-07-26 CZ CZ20040141A patent/CZ297865B6/en not_active IP Right Cessation
- 2002-07-26 CN CNB02814628XA patent/CN1283850C/en not_active Expired - Fee Related
- 2002-07-26 BR BR0211467-4A patent/BR0211467A/en not_active Application Discontinuation
- 2002-07-26 MX MXPA04000859A patent/MXPA04000859A/en active IP Right Grant
- 2002-07-26 DE DE50202333T patent/DE50202333D1/en not_active Expired - Lifetime
- 2002-07-26 CA CA002454075A patent/CA2454075A1/en not_active Abandoned
- 2002-07-26 US US10/485,325 patent/US20040256219A1/en not_active Abandoned
- 2002-07-26 EP EP02791472A patent/EP1412562B1/en not_active Expired - Lifetime
- 2002-07-26 JP JP2003517345A patent/JP4149919B2/en not_active Expired - Fee Related
- 2002-07-26 KR KR1020047001226A patent/KR100867354B1/en not_active IP Right Cessation
- 2002-07-26 RU RU2004105960/02A patent/RU2287619C2/en not_active IP Right Cessation
-
2004
- 2004-01-27 NO NO20040373A patent/NO20040373L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO20040373L (en) | 2004-03-26 |
| KR20040035696A (en) | 2004-04-29 |
| RU2004105960A (en) | 2005-05-10 |
| DE50202333D1 (en) | 2005-03-31 |
| EP1412562B1 (en) | 2005-02-23 |
| RU2287619C2 (en) | 2006-11-20 |
| JP2004537650A (en) | 2004-12-16 |
| CZ2004141A3 (en) | 2004-12-15 |
| BR0211467A (en) | 2004-08-17 |
| CZ297865B6 (en) | 2007-04-18 |
| MXPA04000859A (en) | 2005-06-20 |
| WO2003012176A1 (en) | 2003-02-13 |
| US20040256219A1 (en) | 2004-12-23 |
| ATE289635T1 (en) | 2005-03-15 |
| EP1412562A1 (en) | 2004-04-28 |
| CN1283850C (en) | 2006-11-08 |
| KR100867354B1 (en) | 2008-11-07 |
| CN1533451A (en) | 2004-09-29 |
| JP4149919B2 (en) | 2008-09-17 |
| EP1279751A1 (en) | 2003-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |