EP1170401A2 - Process for the manufacture of one side platinised panels and expanded mesh sheets made of refractory metals - Google Patents
Process for the manufacture of one side platinised panels and expanded mesh sheets made of refractory metals Download PDFInfo
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- EP1170401A2 EP1170401A2 EP01113788A EP01113788A EP1170401A2 EP 1170401 A2 EP1170401 A2 EP 1170401A2 EP 01113788 A EP01113788 A EP 01113788A EP 01113788 A EP01113788 A EP 01113788A EP 1170401 A2 EP1170401 A2 EP 1170401A2
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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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/028—Electroplating of selected surface areas one side electroplating, e.g. substrate conveyed in a bath with inhibited background plating
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
- C25B11/081—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound the element being a noble metal
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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
- C25D3/00—Electroplating: Baths therefor
- C25D3/66—Electroplating: Baths therefor from melts
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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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/026—Electroplating of selected surface areas using locally applied jets of electrolyte
Definitions
- the invention relates to a method for producing plates and expanded metal grids platinum-coated on one side Refractory metals.
- Platinum-coated plates or sheets made of refractory metals and expanded metal grids made from it are becoming common as anodes in electrolytic and electroplating Processes used. Typical areas of application are as Inertanodes in the galvanic deposition of metal and alloy layers, particularly in the production of decorative and / or functional layers of precious metals or precious metal alloys. Other areas of application are Electrodes for electrolytic chromic acid production made of dichromate, for chromic acid treatment (oxidation from Cr3 + to Cr6 +), for cyanide oxidation, for electrolytic Metal recovery, for electrodialysis, cathodic Corrosion protection etc.
- Galvanic deposition of platinum on the refractory metal is basically and in practically arbitrarily less Thickness possible.
- those in the galvanic Platinum bath suspended refractory metal plates on all sides Platinum plated.
- For use as electrodes would be one-sided platinum plating is sufficient, which in turn expensive platinum could be saved.
- An effective one partial coverage of the refractory metal plates is however for use in aggressive conditions in galvanic platinum electrolytes are hardly possible and would also be associated with considerable material and additional work.
- the galvanic coating of refractory metals aqueous electrolyte is due to the spontaneous top layer formation extremely difficult in aqueous solutions. Through previous roughening in complex pickling processes can have a moderate adhesive strength of the coating in the first place Line can be achieved through mechanical adhesion. Through heat treatment in a reducing atmosphere, the adhesive strength something to be increased. The co-separation of Hydrogen during platinum deposition causes embrittlement the platinum layer by incorporating the hydrogen in the platinum.
- the task of the present invention was therefore to find and develop a method with which is made from refractory metals on one side of platinum-plated metal can be, which are also suitable that expanded metal mesh, for example for use as electrodes in electrolytic and galvanic processes can be.
- the form-fitting takes place tight connection of the refractory metal plates to be coated with platinum expediently by screwing or welding in the edge area of the plates. Own the plates given dimensions based on the application. Plates with the dimensions 400 x are typical 600 mm. For the screwing of two panels each is in the edge area a sufficient number of mounting holes are congruent through which then mounting screws to be guided back to back to connect with each other. When connecting through Welding can take place at the edge gap of the joined plates punctual or full-surface welds can be set.
- the refractory metals are titanium, zirconium, hafnium, vanadium, Niobium, tantalum, molybdenum, tungsten or alloys of these Metals in question. Titanium is particularly preferred.
- the assembled plate pairs are placed in a conventional electroplating system suitable for melt electrolytic processes and switched there as a cathode.
- the platinization is carried out in a melt of sodium cyanide and potassium cyanide at temperatures between 500 and 600 ° C., sheets of pure platinum as soluble anodes being connected in opposition to the plates of refractory metal to be coated.
- the melt electrolyte preferably consists of approximately 50% by weight sodium cyanide and approximately 50% by weight potassium cyanide and has a platinum content of approximately 0.5 to 3% by weight during operation.
- a current density of 1 to 5 A / dm 2 is expediently set.
- the platinum layer thickness to be achieved is controlled via the current density and the duration of the coating process. Coating thicknesses of 0.5 to 2.5 ⁇ m are preferably produced. In individual cases, higher layer thicknesses can also be easily achieved, for example up to 10 ⁇ m.
- the separation takes place after platinum plating of the plate pairs the plates by loosening the screw connections and / or cutting them off the edge areas.
- a subsequent processing operation can be that after after coating the separated plates for superficial Oxidation of those not coated with platinum Pages at 500 to 650 ° C in an oxygen-containing atmosphere be annealed.
- the duration of the annealing can typically be 1 to 60 minutes.
- This process leads to a passivation of the unplated side, what for use as electrodes in electrolytic processes is important because only the platinum side Functional layer should be.
- the tempering will Refractory metal on the uncoated side superficial oxidized, which on the other hand makes this another, Appearance clearly different from the platinum side receives. In the case of titanium as the base material, one can attractive, clearly recognizable blue coloring of the non-functional side achieve. This will be good for practice Distinguishability between the functional side and the non-functional side a corresponding electrode guaranteed.
- Another machining process is that the plates with Provide cuts and to one-sided platinum-plated expanded metal grids be taken off.
- the production of expanded metals is known per se and needs details here not to be explained further. Typical dimensions of the Meshes are about 10 x 5 x 1 x 1 mm.
- the expanded metal grids can then tailored and / or tailored to the application requirements corresponding electrode geometries are formed.
- the method according to the invention saves circuit boards of about 70% compared to an all-round galvanic coating of expanded metal grids and of about 48% an all-round galvanic coating of massive Refractory metal plates.
- the platinization from the Melt electrolysis gives the platinum layer, in particular with the intended one-sided coating, a excellent adhesive strength. This is particularly evident with strong mechanical loads such as bending stress and tensile and stretching processes, as they are during production of expanded metal grids are typical.
- Fig. 1 shows an enlargement of a section of an invention manufactured, one-sided platinum-coated titanium expanded metal mesh. The crack-free is clearly with the Base material titanium (dark) bonded platinum overlay (light) to recognize.
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Metals (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von einseitig platinierten Platten und Streckmetallgittern aus Refraktärmetallen.The invention relates to a method for producing plates and expanded metal grids platinum-coated on one side Refractory metals.
Mit Platin überzogene Platten oder Bleche aus Refraktärmetallen und daraus gefertigte Streckmetallgitter werden häufig als Anoden in elektrolytischen und galvanotechnischen Prozessen eingesetzt. Typische Einsatzgebiete sind etwa als Inertanoden bei der galvanischen Abscheidung von Metall- und Legierungsschichten, insbesondere bei der Erzeugung von dekorativen und/oder funktionellen Schichten aus Edelmetallen oder Edelmetallegierungen. Weitere Einsatzgebiete sind Elektroden für die elektrolytische Chromsäureherstellung aus Dichromat, für die Chromsäureaufbereitung (Oxidation von Cr3+ zu Cr6+), für die Cyanidoxidation, für die elektrolytische Metallrückgewinnung, für Elektrodialyse, kathodischen Korrosionsschutz etc.Platinum-coated plates or sheets made of refractory metals and expanded metal grids made from it are becoming common as anodes in electrolytic and electroplating Processes used. Typical areas of application are as Inertanodes in the galvanic deposition of metal and alloy layers, particularly in the production of decorative and / or functional layers of precious metals or precious metal alloys. Other areas of application are Electrodes for electrolytic chromic acid production made of dichromate, for chromic acid treatment (oxidation from Cr3 + to Cr6 +), for cyanide oxidation, for electrolytic Metal recovery, for electrodialysis, cathodic Corrosion protection etc.
Konventionelle Herstellungsmethoden für mit Platin überzogene Platten aus Refraktärmetallen beruhen auf dem Walzplattieren, bei dem ein- oder beidseitig dünne Platinfolien auf das Refraktärmetall aufgewalzt werden. Walzplattierte Bänder und Bleche können anschließend in an sich bekannter Weise zu Streckmetall verarbeitet werden, in dem die Platten mit Schnitten versehen und zu Streckmetallgittern ausgezogen werden. Das Verfahren setzt aus mechanischen und verarbeitungstechnischen Gründen eine Mindestdicke der Platinfolie von mindestens etwa 3µm voraus. Eine weitere Reduzierung der Dicke zwecks Einsparung an teuerem Platin ist nicht möglich. Conventional manufacturing methods for platinum-coated Refractory metal plates are based on roll cladding, with thin platinum foils on one or both sides are rolled onto the refractory metal. Roll Clad Strips and sheets can then be made in a manner known per se Way to be processed into expanded metal in which the plates provided with cuts and drawn out to expanded metal grids become. The process consists of mechanical and processing reasons a minimum thickness of the platinum foil of at least about 3 µm ahead. Another reduction thickness to save expensive platinum not possible.
Eine galvanische Abscheidung von Platin auf das Refraktärmetall ist grundsätzlich und in praktisch beliebig geringer Dicke möglich. Naturgemäß werden die in das galvanische Platinbad eingehängten Refraktärmetallplatten allseitig mit Platin überzogen. Für den Einsatz als Elektroden wäre jedoch eine einseitige Platinierung ausreichend, wodurch wiederum teueres Platin eingespart werden könnte. Eine wirksame partielle Abdeckung der Refraktärmetallplatten ist jedoch für den Einsatz unter den aggressiven Bedingungen in galvanischen Platinelektrolyten kaum möglich und wäre zudem mit erheblichem Material- und Arbeitsmehraufwand verbunden.Galvanic deposition of platinum on the refractory metal is basically and in practically arbitrarily less Thickness possible. Naturally, those in the galvanic Platinum bath suspended refractory metal plates on all sides Platinum plated. For use as electrodes, however, would be one-sided platinum plating is sufficient, which in turn expensive platinum could be saved. An effective one partial coverage of the refractory metal plates is however for use in aggressive conditions in galvanic platinum electrolytes are hardly possible and would also be associated with considerable material and additional work.
Die galvanische Beschichtung von refraktären Metallen aus wässrigen Elektrolyten ist aufgrund der spontanen Deckschichtbildung in wässrigen Lösungen äußerst schwierig. Durch vorhergehende Aufrauhung in aufwendigen Beizprozessen kann eine moderate Haftfestigkeit des Überzugs in erster Linie durch mechanische Haftung erzielt werden. Durch Wärmebehandlung in reduzierender Atmosphäre kann die Haftfestigkeit etwas gesteigert werden. Die Mitabscheidung von Wasserstoff während der Platinabscheidung bewirkt eine Versprödung der Platinschicht durch Einbau des Wasserstoffs in das Platin.The galvanic coating of refractory metals aqueous electrolyte is due to the spontaneous top layer formation extremely difficult in aqueous solutions. Through previous roughening in complex pickling processes can have a moderate adhesive strength of the coating in the first place Line can be achieved through mechanical adhesion. Through heat treatment in a reducing atmosphere, the adhesive strength something to be increased. The co-separation of Hydrogen during platinum deposition causes embrittlement the platinum layer by incorporating the hydrogen in the platinum.
Die unzureichende Haftfestigkeit auf refraktären Metallen und die geringe Duktilität wässrig abgeschiedener Platinschichten schließt die Verwendung für Anwendungen mit starker mechanischer Belastung und Verformung, insbesondere bei der Herstellung von Streckmetall aus beschichteten Platten oder Blechen, praktisch aus.The insufficient adhesive strength on refractory metals and the low ductility of water-deposited platinum layers excludes use for applications with strong mechanical stress and deformation, especially at the production of expanded metal from coated panels or sheets, practically.
Der vorliegenden Erfindung lag daher die Aufgabenstellung zugrunde, ein Verfahren aufzufinden und zu entwickeln, mit dem einseitig platinierte Bleche aus Refraktärmetallen hergestellt werden können, die außerdem geeignet sind, daß daraus Streckmetallgitter, etwa für die Anwendung als Elektroden in elektrolytischen und galvanischen Prozessen, gefertigt werden können. The task of the present invention was therefore to find and develop a method with which is made from refractory metals on one side of platinum-plated metal can be, which are also suitable that expanded metal mesh, for example for use as electrodes in electrolytic and galvanic processes can be.
Es wurde nun gefunden, daß dies erreicht werden kann, wenn man Platten vorgegebener Abmessung aus Refraktärmetall Rükken an Rücken formschlüssig dicht mit einander verbindet, diese mittels Schmelzelektrolyse auf ihren freien Oberflächen mit Platin beschichtet und dann die Platten von einander trennt.It has now been found that this can be achieved if plates of a specified size made from Räkken refractory metal tightly connected to each other at the back, this by means of melt electrolysis on their free surfaces coated with platinum and then the plates from each other separates.
In dem erfindungsgemäßen Verfahren erfolgt die formschlüssige dichte Verbindung der mit Platin zu beschichtenden Refraktärmetallplatten zweckmäßigerweise durch Verschraubung oder Schweißung im Randbereich der Platten. Die Platten besitzen am Anwendungszweck orientierte vorgegebene Abmessungen. Typisch sind etwa Platten mit den Abmessungen 400 x 600 mm. Zur Verschraubung von je zwei Platten wird im Randbereich deckungsgleich eine ausreichende Anzahl von Montagebohrungen gesetzt, durch die hindurch dann Montageschrauben geführt werden, um damit die Platten Rücken an Rücken mit einander zu verbinden. Bei einer Verbindung durch Schweißen können am Randspalt der zusammengefügten Platten punktuelle oder vollflächige Schweißungen gesetzt werden.In the method according to the invention, the form-fitting takes place tight connection of the refractory metal plates to be coated with platinum expediently by screwing or welding in the edge area of the plates. Own the plates given dimensions based on the application. Plates with the dimensions 400 x are typical 600 mm. For the screwing of two panels each is in the edge area a sufficient number of mounting holes are congruent through which then mounting screws to be guided back to back to connect with each other. When connecting through Welding can take place at the edge gap of the joined plates punctual or full-surface welds can be set.
Als Refraktärmetalle kommen Titan, Zirkon, Hafnium, Vanadium, Niob, Tantal, Molybdän, Wolfram oder Legierungen dieser Metalle in Frage. Besonders bevorzugt ist Titan.The refractory metals are titanium, zirconium, hafnium, vanadium, Niobium, tantalum, molybdenum, tungsten or alloys of these Metals in question. Titanium is particularly preferred.
Vor der Verbindung der Platten und der Beschichtung kann es vorteilhaft sein, deren Oberflächen, insbesondere die mit Platin zu beschichtenden, von Oxiden zu befreien und zu aktivieren. Zweckmäßig ist Sandstrahlen und Beizen in Säure, beispielsweise einem Salpetersäure-Flußsäuregemisch.Before joining the panels and coating, it can be advantageous whose surfaces, especially those with Platinum to be coated, freed from oxides and activated. Sandblasting and pickling in acid is advisable, for example a nitric acid-hydrofluoric acid mixture.
Zur Beschichtung auf ihren freien Oberflächen mit Platin mittels Schmelzelektrolyse werden die montierten Plattenpaare in eine übliche, für schmelzelektrolytische Prozesse geeignete Galvanikanlage verbracht und dort als Kathode geschaltet. Die Platinierung wird in einer Schmelze aus Natriumcyanid und Kaliumcyanid bei Temperaturen zwischen 500 und 600 °C vorgenommen, wobei Bleche aus Reinplatin als lösliche Anoden den zu beschichtenden Platten aus Refraktärmetall gegengeschaltet sind. Der Schmelzelektrolyt besteht vorzugsweise aus ungefähr 50 Gew.% Natriumcyanid und ungefähr 50 Gew.% Kaliumcyanid und weist im Betrieb einen Platingehalt von etwa 0,5 bis 3 Gew.% auf. Es wird zweckmäßigerweise eine Stromdichte von 1 bis 5 A/dm2 eingestellt. Die zu erzielende Platinschichtdicke wird über die Stromdichte und die Zeitdauer des Beschichtungsvorganges gesteuert. Vorzugsweise werden Beschichtungsdicken von 0,5 bis 2,5 µm erzeugt. Im Einzelfall können ohne weiteres auch höhere Schichtdicken erzielt werden, etwa bis 10 µm.For coating on their free surfaces with platinum by means of melt electrolysis, the assembled plate pairs are placed in a conventional electroplating system suitable for melt electrolytic processes and switched there as a cathode. The platinization is carried out in a melt of sodium cyanide and potassium cyanide at temperatures between 500 and 600 ° C., sheets of pure platinum as soluble anodes being connected in opposition to the plates of refractory metal to be coated. The melt electrolyte preferably consists of approximately 50% by weight sodium cyanide and approximately 50% by weight potassium cyanide and has a platinum content of approximately 0.5 to 3% by weight during operation. A current density of 1 to 5 A / dm 2 is expediently set. The platinum layer thickness to be achieved is controlled via the current density and the duration of the coating process. Coating thicknesses of 0.5 to 2.5 μm are preferably produced. In individual cases, higher layer thicknesses can also be easily achieved, for example up to 10 µm.
Nach der Platinierung der Plattenpaare erfolgt die Trennung der Platten durch Lösen der Verschraubungen und/oder Abschneiden der Randbereiche.The separation takes place after platinum plating of the plate pairs the plates by loosening the screw connections and / or cutting them off the edge areas.
Nach an sich bekannten und üblichen Reinigungs- und Trocknungsvorgängen liegen die gewünschten einseitig platinierten Platten oder Bleche aus Refraktärmetall vor und können ihrem Verwendungszweck oder der weiteren Bearbeitung zugeführt werden.After known and usual cleaning and Drying processes are the desired one-sided platinum-plated Refractory metal plates or sheets in front of and can change its intended use or further processing be fed.
Ein nachfolgender Bearbeitungsvorgang kann sein, daß nach erfolgter Beschichtung die getrennten Platten zur oberflächlichen Oxidation der nicht mit Platin beschichteten Seiten bei 500 bis 650 °C in sauerstoffhaltiger Atmosphäre getempert werden. Die Dauer der Temperung kann typischerweise 1 bis 60 Minuten betragen. Dieser Vorgang bewirkt zum einen eine Passivierung der nichtplatinierten Seite, was für den Einsatz als Elektroden in elektrolytischen Prozessen wichtig ist, da ausschließlich die platinierte Seite Funktionsschicht sein soll. Durch die Temperung wird das Refraktärmetall auf der nicht beschichteten Seite oberflächlich oxidiert, wodurch zum anderen diese ein anderes, von der platinierten Seite deutlich verschiedenes Aussehen erhält. Im Falle von Titan als Basismaterial läßt sich eine ansprechende, gut erkennbare blaue Färbung der Nichtfunktionsseite erzielen. Hierdurch wird für die Praxis eine gute Unterscheidbarkeit von Funktionsseite und Nichtfunktionsseite einer entsprechenden Elektrode gewährleistet.A subsequent processing operation can be that after after coating the separated plates for superficial Oxidation of those not coated with platinum Pages at 500 to 650 ° C in an oxygen-containing atmosphere be annealed. The duration of the annealing can typically be 1 to 60 minutes. This process leads to a passivation of the unplated side, what for use as electrodes in electrolytic processes is important because only the platinum side Functional layer should be. The tempering will Refractory metal on the uncoated side superficial oxidized, which on the other hand makes this another, Appearance clearly different from the platinum side receives. In the case of titanium as the base material, one can attractive, clearly recognizable blue coloring of the non-functional side achieve. This will be good for practice Distinguishability between the functional side and the non-functional side a corresponding electrode guaranteed.
Ein weiterer Bearbeitungsvorgang ist, daß die Platten mit Schnitten versehen und zu einseitig platinierten Streckmetallgittern ausgezogen werden. Die Herstellung von Streckmetallen ist an sich bekannt und braucht hier im einzelnen nicht weiter erläutert zu werden. Typische Abmessungen der Maschen sind etwa 10 x 5 x 1 x 1 mm. Bei der Anwendung als Elektroden in Form von Streckmetallgittern ist es zweckmäßig, den Tempervorgang zur Passivierung und Kennzeichnung der Nichtfunktionsseite nach der Fertigung des Streckmetallgitters vorzunehmen. Die Streckmetallgitter können dann je nach Anwendungserforderniss zugeschnitten und/oder zu entsprechenden Elektrodengeometrien geformt werden.Another machining process is that the plates with Provide cuts and to one-sided platinum-plated expanded metal grids be taken off. The production of expanded metals is known per se and needs details here not to be explained further. Typical dimensions of the Meshes are about 10 x 5 x 1 x 1 mm. When using as Electrodes in the form of expanded metal grids, it is advisable the tempering process for passivation and labeling the non-functional side after the production of the expanded metal grid make. The expanded metal grids can then tailored and / or tailored to the application requirements corresponding electrode geometries are formed.
Unabhängig von der Platineinsparung durch Schichtdickenverringerung gegenüber konventionellem Walzplattieren ermöglicht das erfindungsgemäße Verfahren eine Platineinsparung von etwa 70% gegenüber einer allseitigen galvanischen Beschichtung von Streckmetallgittern und von etwa 48% gegenüber einer allseitigen galvanischen Beschichtung von massiven Refraktärmetallplatten. Die Platinierung aus der Schmelzelektrolyse verleiht der Platinschicht, insbesondere bei der bestimmungsgemäßen einseitigen Beschichtung, eine ausgezeichnete Haftfestigkeit. Diese zeigt sich insbesondere bei starken mechanischen Belastungen wie Biegebeanspruchungen und Zug- und Streckvorgängen, wie sie bei der Herstellung von Streckmetallgittern typisch sind.Regardless of the saving of circuit boards by reducing the layer thickness compared to conventional roll cladding the method according to the invention saves circuit boards of about 70% compared to an all-round galvanic coating of expanded metal grids and of about 48% an all-round galvanic coating of massive Refractory metal plates. The platinization from the Melt electrolysis gives the platinum layer, in particular with the intended one-sided coating, a excellent adhesive strength. This is particularly evident with strong mechanical loads such as bending stress and tensile and stretching processes, as they are during production of expanded metal grids are typical.
Fig. 1 zeigt in Vergrößerung einen Ausschnitt aus einem erfindungsgemäß hergestellten, einseitig platinierten Titan-Streckmetallgitter. Deutlich ist die rißfreie, fest mit dem Basismaterial Titan (dunkel) vebundene Platinauflage (hell) zu erkennen.Fig. 1 shows an enlargement of a section of an invention manufactured, one-sided platinum-coated titanium expanded metal mesh. The crack-free is clearly with the Base material titanium (dark) bonded platinum overlay (light) to recognize.
Die erfindungsgemäß hergestellten, einseitig platinierten Platten aus Refraktärmetallen und die daraus gefertigten einseitig platinierten Streckmetallgitter können sehr vorteilhaft als Anoden in elektrolytischen und galvanischen Prozessen eingesetzt werden.The platinum coated on one side according to the invention Sheets of refractory metals and the ones made from them Expanded metal grids plated on one side can be very advantageous as anodes in electrolytic and galvanic Processes are used.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10029837 | 2000-06-16 | ||
| DE10029837A DE10029837B4 (en) | 2000-06-16 | 2000-06-16 | Process for the production of unilaterally platinated plates and expanded metal gratings of refractory metals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1170401A2 true EP1170401A2 (en) | 2002-01-09 |
| EP1170401A3 EP1170401A3 (en) | 2004-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01113788A Withdrawn EP1170401A3 (en) | 2000-06-16 | 2001-06-06 | Process for the manufacture of one side platinised panels and expanded mesh sheets made of refractory metals |
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| Country | Link |
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| EP (1) | EP1170401A3 (en) |
| JP (1) | JP2002030479A (en) |
| CN (2) | CN1329969A (en) |
| DE (1) | DE10029837B4 (en) |
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| AT13521U1 (en) * | 2013-01-18 | 2014-02-15 | Plansee Se | module |
| JP6189655B2 (en) * | 2013-06-14 | 2017-08-30 | Ｋｙｂ株式会社 | Anode manufacturing method |
| JP6193005B2 (en) | 2013-06-14 | 2017-09-06 | Ｋｙｂ株式会社 | Holding device and high-speed plating apparatus provided with the same |
| JP6189656B2 (en) | 2013-06-14 | 2017-08-30 | Ｋｙｂ株式会社 | Power supply member and high-speed plating apparatus including the same |
| CN108736017A (en) * | 2017-04-20 | 2018-11-02 | 徐煜 | A kind of electrode plate for hydrogen fuel cell |
| CN110948182B (en) * | 2019-11-11 | 2024-06-11 | 中国航天空气动力技术研究院 | Forming method of refractory metal capillary core |
| CN113481505A (en) * | 2021-07-07 | 2021-10-08 | 南京科技职业学院 | Blind plate manufacturing method |
Citations (3)
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|---|---|---|---|---|
| US4081335A (en) * | 1974-10-23 | 1978-03-28 | Stutterheim F Von | Process for the continuous electrolytic plating of metal wire, strips, chains, and gauze strips with metals |
| EP0005674A2 (en) * | 1978-05-19 | 1979-11-28 | Roger Anger | Process of manufacturing a dimensionally stable anode |
| DE3905082A1 (en) * | 1989-02-18 | 1990-08-23 | Bayer Ag | STABLE ANODES AND THEIR USE IN THE PRODUCTION OF ALKALIDICHROMATES AND CHROME ACID |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4923975B1 (en) * | 1965-03-18 | 1974-06-19 | ||
| JPS53119226A (en) * | 1977-03-28 | 1978-10-18 | Sumitomo Metal Ind Ltd | Continuous one-siede electroplating method |
-
2000
- 2000-06-16 DE DE10029837A patent/DE10029837B4/en not_active Expired - Fee Related
-
2001
- 2001-06-06 EP EP01113788A patent/EP1170401A3/en not_active Withdrawn
- 2001-06-14 JP JP2001180038A patent/JP2002030479A/en active Pending
- 2001-06-15 CN CN01115982A patent/CN1329969A/en active Pending
-
2002
- 2002-08-16 CN CN02130365A patent/CN1439745A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4081335A (en) * | 1974-10-23 | 1978-03-28 | Stutterheim F Von | Process for the continuous electrolytic plating of metal wire, strips, chains, and gauze strips with metals |
| EP0005674A2 (en) * | 1978-05-19 | 1979-11-28 | Roger Anger | Process of manufacturing a dimensionally stable anode |
| DE3905082A1 (en) * | 1989-02-18 | 1990-08-23 | Bayer Ag | STABLE ANODES AND THEIR USE IN THE PRODUCTION OF ALKALIDICHROMATES AND CHROME ACID |
Non-Patent Citations (2)
| Title |
|---|
| DATABASE WPI Section Ch, Week 197428 Derwent Publications Ltd., London, GB; Class M11, AN 1974-51323V XP002263568 & JP 49 023975 B (SUMITOMO ELEC IND LTD), 19. Juni 1974 (1974-06-19) * |
| DATABASE WPI Section Ch, Week 197847 Derwent Publications Ltd., London, GB; Class M11, AN 1978-84662A XP002263569 & JP 53 119226 A (SUMITOMO METAL IND LTD), 18. Oktober 1978 (1978-10-18) * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002030479A (en) | 2002-01-31 |
| DE10029837A1 (en) | 2002-01-03 |
| CN1439745A (en) | 2003-09-03 |
| CN1329969A (en) | 2002-01-09 |
| DE10029837B4 (en) | 2005-02-17 |
| EP1170401A3 (en) | 2004-01-28 |
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