GB593763A - Improvements in or relating to processes for covering the surfaces of aluminium or aluminium alloy articles with adherent and protective metallic coatings - Google Patents
Improvements in or relating to processes for covering the surfaces of aluminium or aluminium alloy articles with adherent and protective metallic coatingsInfo
- Publication number
- GB593763A GB593763A GB10818/45A GB1081845A GB593763A GB 593763 A GB593763 A GB 593763A GB 10818/45 A GB10818/45 A GB 10818/45A GB 1081845 A GB1081845 A GB 1081845A GB 593763 A GB593763 A GB 593763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- copper
- zinc
- deposited
- cadmium
- 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
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
Landscapes
- 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)
Abstract
593,763. Electroplating aluminium. SOC. ANON. DE GALVANOSTEGIE ALMETA. April 30, 1945, No. 10818. Convention date, April 24, 1944. [Class 41] In plating aluminium or aluminium alloy, grease and any trace of oxide are first removed, a porous layer of nickel is then deposited by electrolysis followed by at least one layer of cadmium or zinc. This may be followed by one or more layers of another metal, e.g. copper, nickel, chromium, silver, gold. The surface preparation may be that described in Specification 593,762 which comprises degreasing, removing the oxide skin, lightly plating with copper and dissolving the copper film in an acid bath. The nickel layer of .003 to .01 m. is deposited in a bath having a pH of 5.6 to 6 containing nickel sulphate, boracic acid and some magnesium or sodium sulphate to improve the conductivity. Cadmium may be deposited to a thickness of .02 mm. from a 0.2-0.6 normal solution of cadmium cyanide or acetate containing also potassium cyanide and dextrine or gelatine having a pH of about 10. Zinc may be deposited from a bath containing zinc and potassium cyanides, sodium hydroxide and dextrine at a temperature of 30-50‹ C., or from a bath containing zinc and ammonium sulphates, potassium aluminium sulphate and gum arabic. An article for use as an electric contact is plated on the cadmium or zinc layer with copper in a bath containing per litre of water 200-250 grms. of copper sulphate and 150-250 grm. of sulphuric acid.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH593763X | 1944-04-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB593763A true GB593763A (en) | 1947-10-24 |
Family
ID=4522290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10818/45A Expired GB593763A (en) | 1944-04-24 | 1945-04-30 | Improvements in or relating to processes for covering the surfaces of aluminium or aluminium alloy articles with adherent and protective metallic coatings |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR910537A (en) |
GB (1) | GB593763A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2676917A (en) * | 1952-05-15 | 1954-04-27 | Rockwell Spring & Axle Co | Method of making corrosion resistant articles having a bright surface |
US2858520A (en) * | 1955-01-03 | 1958-10-28 | Chance Co Ab | Electrical connector |
GB2138025A (en) * | 1983-04-13 | 1984-10-17 | Furukawa Electric Co Ltd | Silver-coated electric materials and a method for their production |
CN104040035A (en) * | 2011-12-22 | 2014-09-10 | Om产业股份有限公司 | Plated Article And Manufacturing Method Therefor |
CN105247111A (en) * | 2013-10-25 | 2016-01-13 | Om产业股份有限公司 | Method for producing plated article |
-
1945
- 1945-04-28 FR FR910537D patent/FR910537A/en not_active Expired
- 1945-04-30 GB GB10818/45A patent/GB593763A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2676917A (en) * | 1952-05-15 | 1954-04-27 | Rockwell Spring & Axle Co | Method of making corrosion resistant articles having a bright surface |
US2858520A (en) * | 1955-01-03 | 1958-10-28 | Chance Co Ab | Electrical connector |
GB2138025A (en) * | 1983-04-13 | 1984-10-17 | Furukawa Electric Co Ltd | Silver-coated electric materials and a method for their production |
CN104040035A (en) * | 2011-12-22 | 2014-09-10 | Om产业股份有限公司 | Plated Article And Manufacturing Method Therefor |
CN104040035B (en) * | 2011-12-22 | 2017-05-03 | Om产业股份有限公司 | Plated Article And Manufacturing Method Therefor |
CN105247111A (en) * | 2013-10-25 | 2016-01-13 | Om产业股份有限公司 | Method for producing plated article |
CN105247111B (en) * | 2013-10-25 | 2017-09-12 | Om产业股份有限公司 | The manufacture method of plating product |
US9783902B2 (en) | 2013-10-25 | 2017-10-10 | Om Sangyo Co., Ltd. | Method for producing plated article |
Also Published As
Publication number | Publication date |
---|---|
FR910537A (en) | 1946-06-11 |
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