GB759222A - An electrolytic process for smoothing and polishing surfaces of gold alloys - Google Patents
An electrolytic process for smoothing and polishing surfaces of gold alloysInfo
- Publication number
- GB759222A GB759222A GB17869/54A GB1786954A GB759222A GB 759222 A GB759222 A GB 759222A GB 17869/54 A GB17869/54 A GB 17869/54A GB 1786954 A GB1786954 A GB 1786954A GB 759222 A GB759222 A GB 759222A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gold
- thiourea
- metal
- baser
- smoothing
- 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
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
- C25F3/16—Polishing
- C25F3/22—Polishing of heavy metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
759,222. Electrolytic polishing of gold alloys. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT VORM. ROESSLER. June 17, 1954 [June 27, 1953], No. 17869/54. Addition to 723,945. Class 41. The process claimed in the parent Specification for the anodic polishing of the surface of an article of an alloy of gold with one or more baser metals is modified by including in the acid thiourea solution at least one metal compound yielding ions of the baser metal, or one of the baser metals. The metal compound may be one yielding ions of the basest metal in the alloy, and may be a copper salt, e.g. the copper salt of thiourea or copper sulphate, or may be a nickel salt, and may be in the proportion of 0.03 to 0.3 mol. per mol. of thiourea. The article is moved intermittently to assist in dissolving the anode coating formed during the process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE330375X | 1953-06-27 | ||
| CH313570T | 1954-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB759222A true GB759222A (en) | 1956-10-17 |
Family
ID=25735958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB17869/54A Expired GB759222A (en) | 1953-06-27 | 1954-06-17 | An electrolytic process for smoothing and polishing surfaces of gold alloys |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2712525A (en) |
| CH (1) | CH330375A (en) |
| FR (1) | FR1102393A (en) |
| GB (1) | GB759222A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4686017A (en) * | 1981-11-05 | 1987-08-11 | Union Oil Co. Of California | Electrolytic bath and methods of use |
| US4755265A (en) * | 1985-06-28 | 1988-07-05 | Union Oil Company Of California | Processes for the deposition or removal of metals |
| US4801511A (en) * | 1985-06-28 | 1989-01-31 | Union Oil Company Of California | Battery cell electrolyte |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE888492C (en) * | 1951-09-20 | 1953-09-03 | Degussa | Process for electropolishing gold and gold alloys |
-
1954
- 1954-05-26 CH CH330375D patent/CH330375A/en unknown
- 1954-06-15 FR FR1102393D patent/FR1102393A/en not_active Expired
- 1954-06-17 GB GB17869/54A patent/GB759222A/en not_active Expired
- 1954-06-18 US US437856A patent/US2712525A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR1102393A (en) | 1955-10-19 |
| CH330375A (en) | 1958-05-31 |
| US2712525A (en) | 1955-07-05 |
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