GB1026288A - Improvements in or relating to methods of manufacturing articles by electro-deposition - Google Patents
Improvements in or relating to methods of manufacturing articles by electro-depositionInfo
- Publication number
- GB1026288A GB1026288A GB870564A GB870564A GB1026288A GB 1026288 A GB1026288 A GB 1026288A GB 870564 A GB870564 A GB 870564A GB 870564 A GB870564 A GB 870564A GB 1026288 A GB1026288 A GB 1026288A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- dissolution
- mould
- bath
- copper
- 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
- C25D1/00—Electroforming
- C25D1/20—Separation of the formed objects from the electrodes with no destruction of said electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
An article of copper and/or silver is made by electrodepositing the metal on to an aluminium mould and then dissolving out the mould by an alkaline solution containing at least 0.1 g/l of chromate ions. Typically a wave guide is made by anodizing a polished aluminium mould core, electrolessly plating with silver from a bath containing per litre Silver nitrate 3.75 g 38% by volume ammonia solution 3.75 g 40% by volume formaldehyde 5 nl and then electroplating with copper from a sulphate bath followed by dissolution of the aluminium core in a solution at 100 DEG C. containing 20 g/l NaOH and 25 g/l Na2CrO4. Alternatively the aluminium mould may be pickled in a 3:1 mixture of HNO3 and HF followed by electroplating with copper from a pyrophosphate bath followed by dissolution of the aluminium core. The article may be protected from discoloration by connecting it cathodically towards the end of the dissolution as by applying an appropriate voltage or by contacting it with a piece of pure aluminium. Darkening of the article caused by prolonged immersion in the dissolution bath may be removed by a hydrochloric acid dip.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL289817 | 1963-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1026288A true GB1026288A (en) | 1966-04-14 |
Family
ID=19754480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB870564A Expired GB1026288A (en) | 1963-03-05 | 1964-03-02 | Improvements in or relating to methods of manufacturing articles by electro-deposition |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE644711A (en) |
| DE (1) | DE1496932A1 (en) |
| GB (1) | GB1026288A (en) |
| NL (1) | NL289817A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2246580A (en) * | 1989-09-13 | 1992-02-05 | British Aerospace | Metal components |
-
0
- NL NL289817D patent/NL289817A/xx unknown
-
1964
- 1964-03-02 GB GB870564A patent/GB1026288A/en not_active Expired
- 1964-03-02 DE DE19641496932 patent/DE1496932A1/en active Pending
- 1964-03-04 BE BE644711A patent/BE644711A/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2246580A (en) * | 1989-09-13 | 1992-02-05 | British Aerospace | Metal components |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1496932A1 (en) | 1969-08-14 |
| NL289817A (en) | |
| BE644711A (en) | 1964-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB870060A (en) | Improvements in or relating to the plating of metallic surfaces | |
| GB912956A (en) | Improvements in and relating to chemical nickel plating of magnesium and its alloys | |
| US2734837A (en) | Surface treatment of titanium or | |
| US2559878A (en) | Zinc and cadmium passivating bath | |
| GB1301673A (en) | ||
| US2355933A (en) | Process of metal plating | |
| GB493485A (en) | Process for the electrolytic production of metal coatings on objects with a non-conducting surface | |
| GB712874A (en) | Improvements in or relating to processes for providing aluminium or aluminium alloys with a coating of lead | |
| US3285754A (en) | Deposition of palladium | |
| GB1241296A (en) | Process for colouring anodised aluminium by electrolytic deposition | |
| ES462907A1 (en) | Process for electrolytic deposition of metals on zirconium materials | |
| GB1026288A (en) | Improvements in or relating to methods of manufacturing articles by electro-deposition | |
| GB783807A (en) | Improvements relating to the electroplating of molybdenum, tungsten and alloys thereof | |
| GB809312A (en) | Electrodeposition of zinc on magnesium and its alloys | |
| GB932990A (en) | Improvements in or relating to chromium plating | |
| US3816142A (en) | Electroless chromium plating process and composition | |
| GB625041A (en) | Improvements in and relating to the production of corrosion resistant metal and alloy articles | |
| GB1191077A (en) | Method of Manufacturing Plated Polypropylene Shaped Articles | |
| GB636954A (en) | Lustrous zinc and method for production thereof | |
| GB1022927A (en) | Improvements in and relating to coloring aluminium articles by electrolytic depositions of colored compounds | |
| US3097117A (en) | Method of and composition for producing electroless black nickel coatings | |
| GB1051665A (en) | ||
| GB600041A (en) | Improvements in and relating to the production of corrosion-resistant surfaces on copper and copper-alloy surfaces | |
| GB1007252A (en) | Electroplating on aluminium and its alloys | |
| GB1161550A (en) | Coating of Iron or Iron Alloys |