DE606850C - Process for generating firmly adhering galvanic deposits on aluminum and its alloys - Google Patents
Process for generating firmly adhering galvanic deposits on aluminum and its alloysInfo
- Publication number
- DE606850C DE606850C DE1930S0011530 DES0011530A DE606850C DE 606850 C DE606850 C DE 606850C DE 1930S0011530 DE1930S0011530 DE 1930S0011530 DE S0011530 A DES0011530 A DE S0011530A DE 606850 C DE606850 C DE 606850C
- Authority
- DE
- Germany
- Prior art keywords
- aluminum
- alloys
- firmly adhering
- generating
- galvanic
- 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.)
- Expired
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 9
- 229910045601 alloy Inorganic materials 0.000 title claims description 3
- 239000000956 alloy Substances 0.000 title claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000005238 degreasing Methods 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance 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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/42—Pretreatment of metallic surfaces to be electroplated of light metals
- C25D5/44—Aluminium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Chemically Coating (AREA)
Description
Die bekannten Vorbehandlungsverfahren für die Galvanisierung von Aluminium lassen sich in zwei Gruppen zusammenfassen:The well-known pretreatment processes for the galvanization of aluminum leave can be summarized in two groups:
1. Verfahren, die die Oberfläche des Aluminiums durch Beizen mit Säuren, Laugen oder beiden nacheinander von den ihr häufig anhaftenden Unreinheiten und Oxyden zu befreien trachten, und < 1. Processes which seek to remove the impurities and oxides that often adhere to the surface of aluminum by pickling with acids, alkalis or both, and <
2. Verfahren, die dieses Ziel durch Ansieden der Gegenstände in schwermetallhaltigen Lösungen erzielen mit dem Nebeneffekt, daß hierbei die Schwermetalle vermutlich durch Lokalelementwirkung niedergeschlagen werden. 2. Processes that achieve this goal by boiling the objects in solutions containing heavy metals, with the side effect that the heavy metals are presumably precipitated by local element effects.
Alle diese Vorbehandlungen sind aber, wie die Praxis zeigt, nur geeignet, um galvanische Niederschläge mit nur sehr beschränkter Haftfähigkeit auf dem Aluminium zu erzielen. However, as practice shows, all of these pretreatments are only suitable for galvanic treatment To achieve deposits with only very limited adhesion to the aluminum.
Bekannt ist ferner auch die — im Gegensatz zu den anderen Verfahren überraschende — Erzeugung einer schwermetallhaltigen Oxydhaut auf dem zu galvanisierenden Aluminiumgegenstand auf rain chemischem Wege als Vorbereitung für die Galvanisierung, wobei auch die Lokalelementwirkung infolge der leitenden Verbindung des Aluminiums mit Kohleelektroden oder Metall im Oxydationsbade bewußt benutzt worden ist. Die notwendige sekundäre Beseitigung der so erzeugten Oxydhaut blieb aber dem nachträglichen galvanischen Prozeß selbst überlassen, weshalb auch den so erzeugten Niederschlagen nur geringe Haftfähigkeit eigen war.The one, which is surprising in contrast to the other methods, is also known - Creation of an oxide skin containing heavy metals on the aluminum object to be galvanized by chemical means as preparation for electroplating, with the local element effect as a result the conductive connection of aluminum with carbon electrodes or metal in the oxidation bath has been used consciously. The necessary secondary elimination of the so generated Oxide skin was left to the subsequent galvanic process itself, which is why the precipitates thus produced only poor adhesiveness was inherent.
Bekannt ist ferner die Vorbehandlung von zu plattierendem Aluminium mittels Ätzung, die entweder eingangs des Verfahrens oder nach einer mittels Wechselstrom in schwach organisch saurem Bade erzielten Voroxydation durchgeführt werden kann. Doch sind die so erzeugten Produkte matt und zeigen eine rauhe Oberfläche. .The pretreatment of aluminum to be plated by means of etching is also known, either at the beginning of the process or after an alternating current in weak Organically acidic bath pre-oxidation achieved can be carried out. But are the products produced in this way are matt and have a rough surface. .
Die Erfindung betrifft ein dreistufiges Verfahren zur Galvanisierung von Aluminium und seinen Legierungen, nämlich:The invention relates to a three-step process for electroplating aluminum and its alloys, namely:
a) Voroxydation mittels Gleichstrom im sauren Bade,a) pre-oxidation by means of direct current in an acid bath,
b) Behandlung und Vorgalvanisierung in einem Entfettungsbade, das gewisse Schwermetallsalze enthält,b) Treatment and pre-electroplating in a degreasing bath, the certain heavy metal salts contains,
c) Galvanisierung in dem für das niederzuschlagende Metall jeweils praktischsten Elektrolyten.c) Electroplating in the most practical way for the metal to be deposited Electrolytes.
Es zeigte sich, daß bei der Durchführung der Behandlung in einem Entfettungsbad, welches Kupfer, Messing oder ein anderes sich galvanisch ähnlich verhaltendes Metall enthält, bei zweckmäßig über 5 Volt Spannung das niedergeschlagene Metall hauchdünn ist, und daß man darauf andere Metalle, goIt was found that when the treatment was carried out in a degreasing bath, which copper, brass or another galvanically similar metal contains, if the voltage is expediently above 5 volts, the deposited metal is extremely thin is, and that you can use other metals, go
*) Von den: Patentsucher ist als der Erfinder angegeben worden:*) From the: Patent seeker has been specified as the inventor:
Dr. Johannes Fischer in Berlin-CharlotLenburg.Dr. Johannes Fischer in Berlin-CharlotLenburg.
wie Cadmium, Nickel, Kupfer, in besonders festhaftender Form galvanisch niederschlagen kann. Die Gegenstände können in normaler Weise ohne besondere Vorsicht geglänzt werden.such as cadmium, nickel, copper, galvanically deposit in a particularly firmly adhering form can. The objects can be polished in the normal way without special care.
Die der Behandlung im schwermetallhaltigen Entfettungsbade voraufgehende oberflächliche Oxydation der Aluminiumteile wird zweckmäßig in an sich bekannter Weise durch ίο anodische Behandlung derselben in einem eine oxydierende, organische oder anorganische Säure, besonders 30- bis 400/oige Chromsäure mit etwas Schwefelsäure, enthaltenden Bade bei 20 bis 60 Volt vorgenommen.The superficial ones preceding the treatment in the heavy metal degreasing bath Oxidation of the aluminum parts is expedient in a manner known per se by ίο anodic treatment of the same in one an oxidizing, organic or inorganic acid, especially 30 to 400% chromic acid made with a little sulfuric acid, containing bath at 20 to 60 volts.
AusführungsbeispielEmbodiment
Ein Gegenstand aus Reinaluminium, der als Anode in einem Chrombad 15 bis 30 Minuten lang oberflächlich oxydiert wurde, wird gut abgespült und in einem der üblichen Entfettungsbäder mit gleichzeitigemNiederschlagen von Messing bei etwa 6 Volt kathodisch behandelt. Nach 2 bis 3 Alinuten ist so viel Metall niedergeschlagen, daß der Gegenstand in einem der üblichen galvanischen Bäder weiterbehandelt werden kann.An object made of pure aluminum that acts as an anode in a chrome bath for 15 to 30 minutes has been superficially oxidized for a long time, it is rinsed well and in one of the usual degreasing baths with simultaneous deposition of brass at about 6 volts cathodically treated. After 2 to 3 minutes, so much metal is deposited that the object can be further treated in one of the usual galvanic baths.
Claims (1)
Priority Applications (15)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1930S0011530 DE606850C (en) | 1930-11-07 | 1930-11-07 | Process for generating firmly adhering galvanic deposits on aluminum and its alloys |
| DES99296D DE610689C (en) | 1930-11-07 | 1931-06-21 | Process for achieving firmly adhering galvanic deposits on aluminum and its alloys |
| US572440A US1947981A (en) | 1930-11-07 | 1931-10-31 | Plating aluminum |
| FR725848D FR725848A (en) | 1930-11-07 | 1931-11-06 | Production process, on aluminum and its alloys, of strongly adhering galvanic deposits |
| GB30791/31A GB385067A (en) | 1930-11-07 | 1931-11-06 | An improved method of producing firmly adherent galvanic deposits on aluminium and its alloys |
| DES104429D DE611643C (en) | 1930-11-07 | 1932-05-01 | Process for generating galvanic deposits on aluminum and its alloys |
| DES108305D DE610206C (en) | 1930-11-07 | 1933-02-16 | Process for the production of firmly adhering galvanic deposits on aluminum and its alloys |
| US665741A US1968483A (en) | 1930-11-07 | 1933-04-12 | Plating aluminium and its alloys |
| GB11207/33A GB394637A (en) | 1930-11-07 | 1933-04-13 | Method of producing galvanic deposits on aluminium and its alloys |
| FR43472D FR43472E (en) | 1930-11-07 | 1933-04-18 | Production process, on aluminum and its alloys, of strongly adhering galvanic deposits |
| NL67186A NL36860C (en) | 1930-11-07 | 1933-10-27 | |
| BE399452D BE399452A (en) | 1930-11-07 | 1933-11-02 | |
| FR44190D FR44190E (en) | 1930-11-07 | 1933-11-03 | Production process, on aluminum and its alloys, of strongly adhering galvanic deposits |
| GB31263/33A GB404251A (en) | 1930-11-07 | 1933-11-09 | Method of producing firmly adherent galvanic deposits on aluminium and its alloys |
| US709349A US2036962A (en) | 1930-11-07 | 1934-02-01 | Method for production of firmly adhering galvanic coatings on aluminum and aluminum alloys |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1930S0011530 DE606850C (en) | 1930-11-07 | 1930-11-07 | Process for generating firmly adhering galvanic deposits on aluminum and its alloys |
| DES104429D DE611643C (en) | 1930-11-07 | 1932-05-01 | Process for generating galvanic deposits on aluminum and its alloys |
| DES108305D DE610206C (en) | 1930-11-07 | 1933-02-16 | Process for the production of firmly adhering galvanic deposits on aluminum and its alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE606850C true DE606850C (en) | 1934-12-12 |
Family
ID=40626731
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1930S0011530 Expired DE606850C (en) | 1930-11-07 | 1930-11-07 | Process for generating firmly adhering galvanic deposits on aluminum and its alloys |
| DES99296D Expired DE610689C (en) | 1930-11-07 | 1931-06-21 | Process for achieving firmly adhering galvanic deposits on aluminum and its alloys |
| DES104429D Expired DE611643C (en) | 1930-11-07 | 1932-05-01 | Process for generating galvanic deposits on aluminum and its alloys |
| DES108305D Expired DE610206C (en) | 1930-11-07 | 1933-02-16 | Process for the production of firmly adhering galvanic deposits on aluminum and its alloys |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES99296D Expired DE610689C (en) | 1930-11-07 | 1931-06-21 | Process for achieving firmly adhering galvanic deposits on aluminum and its alloys |
| DES104429D Expired DE611643C (en) | 1930-11-07 | 1932-05-01 | Process for generating galvanic deposits on aluminum and its alloys |
| DES108305D Expired DE610206C (en) | 1930-11-07 | 1933-02-16 | Process for the production of firmly adhering galvanic deposits on aluminum and its alloys |
Country Status (6)
| Country | Link |
|---|---|
| US (3) | US1947981A (en) |
| BE (1) | BE399452A (en) |
| DE (4) | DE606850C (en) |
| FR (3) | FR725848A (en) |
| GB (3) | GB385067A (en) |
| NL (1) | NL36860C (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2430468A (en) * | 1943-11-08 | 1947-11-11 | Bell Telephone Labor Inc | Electroplating silver on aluminum and its alloys |
| US2422903A (en) * | 1944-04-21 | 1947-06-24 | Western Electric Co | Process for electrolytically treating stainless steel articles |
| US2473163A (en) * | 1945-06-25 | 1949-06-14 | Ewald H Mccoy | Plating nickel on aluminum |
| US2541083A (en) * | 1945-08-25 | 1951-02-13 | Sperry Corp | Electroplating on aluminum |
| US2496845A (en) * | 1946-06-10 | 1950-02-07 | Chrysler Corp | Bath for brass immersion coating on aluminum and aluminum alloy |
| US2495941A (en) * | 1946-12-18 | 1950-01-31 | Reynolds Metals Co | Electroplating copper on aluminum |
| US2721835A (en) * | 1951-07-07 | 1955-10-25 | Shwayder Bros Inc | Surface treatment of aluminum articles |
| US2798037A (en) * | 1953-05-13 | 1957-07-02 | Sprague Electric Co | Aluminum oxide films |
| BE559886A (en) * | 1956-08-08 | |||
| DE1546005B1 (en) * | 1964-02-27 | 1971-01-21 | Schmidt Gmbh Karl | Treatment of sliding surfaces with chemically or galvanically coated surfaces |
| US3531379A (en) * | 1965-07-28 | 1970-09-29 | Micral Ind Inc | Process of coating aluminum with other metals |
| US3929594A (en) * | 1973-05-18 | 1975-12-30 | Fromson H A | Electroplated anodized aluminum articles |
| US4085012A (en) * | 1974-02-07 | 1978-04-18 | The Boeing Company | Method for providing environmentally stable aluminum surfaces for adhesive bonding and product produced |
| US4021592A (en) * | 1974-03-07 | 1977-05-03 | Fromson H A | Process of making electroplated anodized aluminum articles and electroless plating |
| US4159229A (en) * | 1977-06-03 | 1979-06-26 | Ford Motor Company | Method of plating light weight metal to enhance lateral corrosion resistance |
| US4157941A (en) * | 1977-06-03 | 1979-06-12 | Ford Motor Company | Method of adherency of electrodeposits on light weight metals |
| US4914081A (en) * | 1988-01-15 | 1990-04-03 | American Telephone And Telegraph Company, At&T Bell Laboratories | Process for making metallized structure and article comprising structure |
| US5466360A (en) * | 1994-10-13 | 1995-11-14 | Robert Z. Reath | Method for preparing aluminum for subsequent electroplating |
| JP4194143B2 (en) * | 1998-10-09 | 2008-12-10 | 株式会社神戸製鋼所 | Aluminum alloy material with excellent gas and plasma corrosion resistance |
| US20040072011A1 (en) * | 2002-10-10 | 2004-04-15 | Centro De Investigaciq Materiales Avanzados, S.C. | Electroless brass plating method and product-by-process |
| US20060254922A1 (en) * | 2005-03-21 | 2006-11-16 | Science & Technology Corporation @ Unm | Method of depositing films on aluminum alloys and films made by the method |
| DE102016113641A1 (en) | 2016-07-25 | 2018-01-25 | Christian-Albrechts-Universität Zu Kiel | Aluminum-copper connector having a heterostructure and method of making the heterostructure |
| US11261533B2 (en) | 2017-02-10 | 2022-03-01 | Applied Materials, Inc. | Aluminum plating at low temperature with high efficiency |
-
1930
- 1930-11-07 DE DE1930S0011530 patent/DE606850C/en not_active Expired
-
1931
- 1931-06-21 DE DES99296D patent/DE610689C/en not_active Expired
- 1931-10-31 US US572440A patent/US1947981A/en not_active Expired - Lifetime
- 1931-11-06 FR FR725848D patent/FR725848A/en not_active Expired
- 1931-11-06 GB GB30791/31A patent/GB385067A/en not_active Expired
-
1932
- 1932-05-01 DE DES104429D patent/DE611643C/en not_active Expired
-
1933
- 1933-02-16 DE DES108305D patent/DE610206C/en not_active Expired
- 1933-04-12 US US665741A patent/US1968483A/en not_active Expired - Lifetime
- 1933-04-13 GB GB11207/33A patent/GB394637A/en not_active Expired
- 1933-04-18 FR FR43472D patent/FR43472E/en not_active Expired
- 1933-10-27 NL NL67186A patent/NL36860C/xx active
- 1933-11-02 BE BE399452D patent/BE399452A/xx unknown
- 1933-11-03 FR FR44190D patent/FR44190E/en not_active Expired
- 1933-11-09 GB GB31263/33A patent/GB404251A/en not_active Expired
-
1934
- 1934-02-01 US US709349A patent/US2036962A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2036962A (en) | 1936-04-07 |
| GB394637A (en) | 1933-06-29 |
| GB385067A (en) | 1932-12-22 |
| BE399452A (en) | 1933-12-30 |
| US1968483A (en) | 1934-07-31 |
| DE610206C (en) | 1935-03-06 |
| US1947981A (en) | 1934-02-20 |
| GB404251A (en) | 1934-01-11 |
| FR725848A (en) | 1932-05-18 |
| NL36860C (en) | 1935-11-15 |
| DE610689C (en) | 1935-03-14 |
| FR43472E (en) | 1934-06-07 |
| DE611643C (en) | 1935-04-02 |
| FR44190E (en) | 1934-11-20 |
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