DE1095079B - Method and device for the galvanic deposition of coatings of rare metals, in particular radioactive metals - Google Patents
Method and device for the galvanic deposition of coatings of rare metals, in particular radioactive metalsInfo
- Publication number
- DE1095079B DE1095079B DEN13120A DEN0013120A DE1095079B DE 1095079 B DE1095079 B DE 1095079B DE N13120 A DEN13120 A DE N13120A DE N0013120 A DEN0013120 A DE N0013120A DE 1095079 B DE1095079 B DE 1095079B
- Authority
- DE
- Germany
- Prior art keywords
- inactive
- cathode
- anode
- absorbent material
- metals
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims description 22
- 229910052751 metal Inorganic materials 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 12
- 150000002739 metals Chemical class 0.000 title claims description 10
- 230000002285 radioactive effect Effects 0.000 title claims description 5
- 230000008021 deposition Effects 0.000 title claims description 4
- 238000000576 coating method Methods 0.000 title claims description 3
- 239000000463 material Substances 0.000 claims description 15
- 230000002745 absorbent Effects 0.000 claims description 13
- 239000002250 absorbent Substances 0.000 claims description 13
- 238000009713 electroplating Methods 0.000 claims description 7
- 239000000499 gel Substances 0.000 claims description 7
- 108010010803 Gelatin Proteins 0.000 claims description 4
- 239000008273 gelatin Substances 0.000 claims description 4
- 229920000159 gelatin Polymers 0.000 claims description 4
- 235000019322 gelatine Nutrition 0.000 claims description 4
- 235000011852 gelatine desserts Nutrition 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 239000010425 asbestos Substances 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 235000010987 pectin Nutrition 0.000 claims description 2
- 229920001277 pectin Polymers 0.000 claims description 2
- 239000001814 pectin Substances 0.000 claims description 2
- 229910052895 riebeckite Inorganic materials 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- -1 whereby an inactive Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- 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
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/54—Electroplating: Baths therefor from solutions of metals not provided for in groups C25D3/04 - C25D3/50
-
- 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
- C25D17/10—Electrodes, e.g. composition, counter electrode
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/08—Rinsing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zum galvanischen Abscheiden von Metallschichten aus seltenen Metallen, insbesondere radioaktiven Metallen, und ferner auf eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for the electrodeposition of metal layers rare metals, especially radioactive metals, and also to a device for implementation this procedure.
Es ist in der Galvanotechnik an sich bekannt, bei einem Verfahren zur Abscheidung von Metallschichten ein inaktives, absorbierendes Material mit der Lösung des niederzuschlagenden Metalls zu benetzen und dieses absorbierende Material unter anodischer Schaltung auf die Kathode zu drücken. Diese Maßnahme wird z. B. vorgenommen, wenn kleine Metalloberflächen oder befestigte Metallteile, die in diesem Fall dann nicht demontiert zu werden brauchen, galvanisiert werden müssen oder wenn ein leicht zu transportierendes Gerät erforderlich ist, damit das Gerät möglichst kompakt ist, oder aber in den Fällen, bei denen eine Galvanisierung in einem Gerät mit Hilfe von mit Elektrolyten gespeisten, sich schnell über die Oberfläche bewegenden Elementen stattfindet. Der Erfindung liegt die Erkenntnis zugrunde, daß ein solches Verfahren auch besondere Vorteile hat beim Niederschlagen von seltenen Metallen, weil in dieser Weise bedeutend weniger Metall verlorengeht und dünnere, gleichmäßigere Schichten abgeschieden werden können als bei dem Verfahren, bei dem das Metall aus einer wäßrigen Elektrolytlösung abgeschieden wird. Ferner ist bei Verwendung radioaktiver Metalle die Reinigung der Apparatur hierbei ein weniger großes Problem.It is known per se in electroplating for a method for the deposition of metal layers to wet an inactive, absorbent material with the solution of the metal to be deposited and to press this absorbent material onto the cathode with anodic switching. This measure is z. B. made when small metal surfaces or attached metal parts, which in this case then do not need to be dismantled, galvanized or if an easily transportable one Device is required so that the device is as compact as possible, or in those cases where an electroplating in a device with the help of electrolyte-fed, spreading quickly over the surface moving elements takes place. The invention is based on the knowledge that such The process also has particular advantages when precipitating rare metals, because in this way significantly less metal is lost and thinner, more uniform layers can be deposited than the method in which the metal is deposited from an aqueous electrolyte solution. Further If radioactive metals are used, cleaning the equipment is less of a problem.
Es besteht aber die Gefahr, daß das abgeschiedene Metall sich teilweise wieder löst, wenn nach Unterbrechung des Galvanisierstromes, nachdem die gewünschte Schicht auf die Kathode niedergeschlagen ist, diese gespült wird, wodurch Löcher in der abgeschiedenen Metallschicht gebildet werden.However, there is a risk that the deposited metal will partially dissolve again if after an interruption of the electroplating current after the desired layer has been deposited on the cathode is, this is flushed, whereby holes are formed in the deposited metal layer.
Dieser Nachteil wird erfindungsgemäß dadurch behoben, daß das Spülen ohne Unterbrechung des Galvanisierstromes vorgenommen wird.According to the invention, this disadvantage is eliminated by the fact that the flushing is carried out without interrupting the electroplating current is made.
Als Anode wird z. B. Graphit oder ein seltenes Metall verwendet. Obwohl beim Verfahren nach der Erfindung jede Art von inaktivem, absorbierendem Material, wie Filtrierpapier, Asbestschichten, poröses gesintertes keramisches Material und Glasfasern, benutzt werden kann, wird vorzugsweise ein Gel, wie ein Silicium-Dioxydgel, ein Pektingel, hydratierte Stärke, Gelatine oder Gelatine enthaltende Materialien verwendet, da unter Anwendung solcher Gele eine gleichmäßigere Überzugsschicht erzielt wird.As an anode z. B. graphite or a rare metal is used. Although the procedure according to the Invention any kind of inactive, absorbent material, such as filter paper, asbestos sheets, porous sintered ceramic material and glass fibers, can be used, preferably a gel such as a silica gel, a pectin gel, hydrated starch, gelatin or gelatin-containing materials used because a more uniform coating layer is achieved by using such gels.
Eine Vorrichtung zur Durchführung des Verfahrens nach der Erfindung, bestehend aus einer mit einem inaktiven, absorbierenden Material bedeckten Anode, einer Kathode von gleicher Form wie das inaktive, absorbierende Material und Mittel, durch welche die Kathode mit dem inaktiven, absorbierenden Material Verfahren und VorrichtungA device for performing the method according to the invention, consisting of a with an inactive, absorbent material covered anode, a cathode of the same shape as the inactive one, absorbent material and means by which the cathode with the inactive absorbent material Method and device
zum galvanischen Abscheidenfor galvanic deposition
von Überzügen seltener Metalle,of coatings of rare metals,
insbesondere radioaktiver Metalleespecially radioactive metals
Anmelder:Applicant:
N. V. Philips' Gloeilampenfabrieken,
Eindhoven (Niederlande)NV Philips' Gloeilampenfabrieken,
Eindhoven (Netherlands)
Vertreter: Dr. rer. nat. P. Roßbach, Patentanwalt,
Hamburg I1 Mönckebergstr. 7Representative: Dr. rer. nat. P. Roßbach, patent attorney,
Hamburg I 1 Mönckebergstr. 7th
Beanspruchte Priorität:
V. St v. Amerika vom 30. Dezember 1955Claimed priority:
V. St v. America December 30, 1955
Charles Franklin. Hendee, Irvington-on-Hudson, N. Y., Walter Brown, White Plains, N. Y.,Charles Franklin. Hendee, Irvington-on-Hudson, N.Y., Walter Brown, White Plains, N.Y.,
und Samuel Fine, New York, N. Y. (V. St. A.),and Samuel Fine, New York, N.Y. (V. St. A.),
sind als Erfinder genannt wordenhave been named as inventors
in Kontakt gebracht werden kann, ist gekennzeichnet durch die Anordnung eines mit Löchern versehenen, in der Galvanisierebene verlaufenden Rohres für die Spülflüssigkeit zum Spülen der Kathode, des inaktiven, absorbierenden Materials und der Anode.can be brought into contact is characterized by the arrangement of a perforated, in the electroplating level running tube for the rinsing liquid for rinsing the cathode, the inactive, absorbent material and the anode.
In der Zeichnung ist im Schnitt ein Apparat dargestellt, mittels dessen das Verfahren nach der Erfindung in geeigneter Weise durchgeführt werden kann. Darin bezeichnet 1 eine Gelatineschicht, die mit einer Lösung von Fe55Cl3 in Salzsäure benetzt ist. Die Schicht 1 liegt auf einer Graphitanode 2, die auf einer Metallelektrode 3 befestigt ist.In the drawing, an apparatus is shown in section, by means of which the method according to the invention can be carried out in a suitable manner. 1 denotes a gelatin layer which is wetted with a solution of Fe 55 Cl 3 in hydrochloric acid. The layer 1 lies on a graphite anode 2 which is attached to a metal electrode 3.
Die Kupferplatte 4, welche die gleichen Oberflächenabmessungen wie die Schicht 1 hat, stellt die Kathode dar und ist an der Elektrode 5 befestigt. Mittels des Handgriffs 6 wird die Kathode 4 gegen die Schicht 1 gedrückt, wobei die Elektrode 5 von den Führungsbahnen 7 geleitet wird. Der Handgriff 6 und die Führungsbahn 7 bestehen aus einem elektrisch nichtleitenden Material, wie Kunstharz. Durch die Leiter 8 und 9 wird 2 Minuten lang eine Spannung von 3 V zwischen der Anode 2 und der Kathode 5 angelegt. Darauf wird der Apparat ohne Beseitigung der Spannung mit Wasser aus einem Rohr 10 durch die Öffnungen 11 hindurch bespritzt. Das verunreinigte Wasser 12 wirdThe copper plate 4, which has the same surface dimensions as the layer 1 has, represents the cathode and is attached to the electrode 5. Using the With the handle 6, the cathode 4 is pressed against the layer 1, the electrode 5 being guided by the guideways 7. The handle 6 and the guideway 7 are made of an electrically non-conductive material such as synthetic resin. Through the ladder 8 and 9 a voltage of 3 V is applied between the anode 2 and the cathode 5 for 2 minutes. On it will the apparatus without removing the tension with water from a pipe 10 through the openings 11 splashed through. The contaminated water 12 is
009 678/447009 678/447
über die öffnung 13 im Glasgefäß 14 aufgefangen. Darauf werden die Elektroden getrennt und gespült, worauf die Spannung beseitigt wird. Es hat sich dann eine dünne Schicht Fe55 auf das Kupfer niedergeschlagen. Collected via the opening 13 in the glass vessel 14. The electrodes are then disconnected and rinsed, whereupon the voltage is removed. A thin layer of Fe 55 has then deposited on the copper.
Der galvanische Apparat kann mit Füßen 16 in der z. B. aus Glas bestehenden Hülle 15 untergebracht werden.The galvanic apparatus can with feet 16 in the z. B. made of glass housing 15 housed will.
Claims (4)
Deutsche Patentschriften Nr. 854 867, 934 620;
österreichische Patentschrift Nr. 4957.Considered publications:
German Patent Nos. 854 867, 934 620;
Austrian patent specification No. 4957.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US556575A US2959532A (en) | 1955-12-30 | 1955-12-30 | Apparatus and method for the electrodeposition of rare metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1095079B true DE1095079B (en) | 1960-12-15 |
Family
ID=24221917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEN13120A Pending DE1095079B (en) | 1955-12-30 | 1956-12-21 | Method and device for the galvanic deposition of coatings of rare metals, in particular radioactive metals |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2959532A (en) |
| DE (1) | DE1095079B (en) |
| FR (1) | FR1163683A (en) |
| GB (1) | GB836731A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893902A (en) * | 1973-04-12 | 1975-07-08 | Diamond Shamrock Corp | Electrolytic sea water process |
| EP3180290B1 (en) * | 2014-08-15 | 2020-04-22 | Rare Earth Salts Separation and Refining LLC | Method for extraction and separation of rare earth elements |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT4957B (en) * | 1900-06-25 | 1901-08-10 | James Andrew Wilson | |
| DE854867C (en) * | 1950-12-20 | 1952-11-06 | Georg Sladek | Method and device for generating galvanic metal deposits by means of hand anodes |
| DE934620C (en) * | 1953-07-25 | 1955-10-27 | Walter Siegert | Device for galvanostegic or galvanoplastic surface treatment of objects without using a bath |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1787431A (en) * | 1925-07-13 | 1931-01-06 | Batenburg | Electroplating device |
| US1739657A (en) * | 1928-01-16 | 1929-12-17 | Reuben B Shemitz | Electroplating device |
| US1857590A (en) * | 1928-05-14 | 1932-05-10 | Siemens Ag | Apparatus for electrolytically refining precious metals |
| US2244620A (en) * | 1938-07-19 | 1941-06-03 | Walter A Hesse | Electroplating apparatus |
| US2306082A (en) * | 1940-04-27 | 1942-12-22 | Clarence O Prest | Method for line or design reproduction by electrolysis |
| US2726200A (en) * | 1952-06-07 | 1955-12-06 | Kemart Corp | Lithographic plates and method of preparing |
-
1955
- 1955-12-30 US US556575A patent/US2959532A/en not_active Expired - Lifetime
-
1956
- 1956-12-21 DE DEN13120A patent/DE1095079B/en active Pending
- 1956-12-27 GB GB39300/56A patent/GB836731A/en not_active Expired
- 1956-12-28 FR FR1163683D patent/FR1163683A/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT4957B (en) * | 1900-06-25 | 1901-08-10 | James Andrew Wilson | |
| DE854867C (en) * | 1950-12-20 | 1952-11-06 | Georg Sladek | Method and device for generating galvanic metal deposits by means of hand anodes |
| DE934620C (en) * | 1953-07-25 | 1955-10-27 | Walter Siegert | Device for galvanostegic or galvanoplastic surface treatment of objects without using a bath |
Also Published As
| Publication number | Publication date |
|---|---|
| US2959532A (en) | 1960-11-08 |
| GB836731A (en) | 1960-06-09 |
| FR1163683A (en) | 1958-09-30 |
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