GB724829A - A process for electrolytically polishing articles made of, or substantially of, gold - Google Patents
A process for electrolytically polishing articles made of, or substantially of, goldInfo
- Publication number
- GB724829A GB724829A GB911753A GB911753A GB724829A GB 724829 A GB724829 A GB 724829A GB 911753 A GB911753 A GB 911753A GB 911753 A GB911753 A GB 911753A GB 724829 A GB724829 A GB 724829A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gold
- per cent
- potassium
- articles made
- electrolytically polishing
- 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)
Abstract
724,829. Electrolytic polishing of gold. SIEMENS & HALSKE AKT.-GES. April 1, 1953, No. 9117/53. Class 41. In a process for electrolytically polishing articles made of, or substantially of, gold, the articles are treated anodically in an electrolyte comprising an aqueous solution of potassium cyanide, potassium ferrocyanide, sodium phosphate and potassium hydroxide. The electrolyte preferably contains 4 to 8 per cent of, potassium cyanide, 4 to 20 per cent of potassium ferrocyanide, 1 to 5 per cent of sodium phosphate and 0.2 to 1.5 per cent of potassium hydroxide. Preferably the anode current density is 50 to 150 amps. per square decimetre, and the temperature is between 60‹ C. and 95‹ C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB911753A GB724829A (en) | 1953-04-01 | 1953-04-01 | A process for electrolytically polishing articles made of, or substantially of, gold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB911753A GB724829A (en) | 1953-04-01 | 1953-04-01 | A process for electrolytically polishing articles made of, or substantially of, gold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB724829A true GB724829A (en) | 1955-02-23 |
Family
ID=9865693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB911753A Expired GB724829A (en) | 1953-04-01 | 1953-04-01 | A process for electrolytically polishing articles made of, or substantially of, gold |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB724829A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3088887A (en) * | 1958-11-03 | 1963-05-07 | Diamond Alkali Co | Electropolishing of zinc-copper alloys |
-
1953
- 1953-04-01 GB GB911753A patent/GB724829A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3088887A (en) * | 1958-11-03 | 1963-05-07 | Diamond Alkali Co | Electropolishing of zinc-copper alloys |
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