GB558726A - Improvements in or relating to method of polishing copper, and electrolyte suitable for use in said method - Google Patents
Improvements in or relating to method of polishing copper, and electrolyte suitable for use in said methodInfo
- Publication number
- GB558726A GB558726A GB648/43A GB64843A GB558726A GB 558726 A GB558726 A GB 558726A GB 648/43 A GB648/43 A GB 648/43A GB 64843 A GB64843 A GB 64843A GB 558726 A GB558726 A GB 558726A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- per cent
- relating
- polishing copper
- electrolyte suitable
- 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)
- Electrolytic Production Of Metals (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
558,726. Electro-polishing copper. BATTELLE MEMORIAL INSTITUTE. Jan. 13, 1943, No. 648. Convention date, April 24, 1942. [Class 41] Copper is polished by being made the anode in a bath consisting of a concentrated aqueous solution of orthophosphoric acid (75 to 84 per cent) containing a small amount of trivalent aluminium (.25 to 2 per cent) to render the anodically dissolved copper recoverable by cathodic deposition. Trivalent chromium not exceeding 2 per cent and divalent copper from .5 to 1 per cent may be present. The bath temperature is maintained at 110 F. or over and a current density of at least 50 ampÞres per square foot (preferably 75 to 200) is employed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US440337A US2366714A (en) | 1942-04-24 | 1942-04-24 | Electrolyte for and method of anodically polishing copper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB558726A true GB558726A (en) | 1944-01-18 |
Family
ID=23748371
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB649/43A Expired GB558727A (en) | 1942-04-24 | 1943-01-13 | Improvements in or relating to method of polishing nickel, and an electrolyte suitable for use in said method |
| GB648/43A Expired GB558726A (en) | 1942-04-24 | 1943-01-13 | Improvements in or relating to method of polishing copper, and electrolyte suitable for use in said method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB649/43A Expired GB558727A (en) | 1942-04-24 | 1943-01-13 | Improvements in or relating to method of polishing nickel, and an electrolyte suitable for use in said method |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US2366714A (en) |
| BE (1) | BE478066A (en) |
| CH (1) | CH270547A (en) |
| DE (1) | DE833287C (en) |
| FR (1) | FR922994A (en) |
| GB (2) | GB558727A (en) |
| LU (1) | LU28771A1 (en) |
| NL (1) | NL68813C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2429676A (en) * | 1942-04-24 | 1947-10-28 | Battelle Memorial Institute | Electrolyte for and method of anodically polishing nickel |
| LU28772A1 (en) * | 1943-07-23 | |||
| US2550544A (en) * | 1947-11-14 | 1951-04-24 | Battelle Development Corp | Method of anodically polishing aluminum |
| US3766030A (en) * | 1971-12-27 | 1973-10-16 | Muroc Prod Corp | Method of electropolishing |
-
0
- LU LU28771D patent/LU28771A1/xx unknown
- NL NL68813D patent/NL68813C/xx active
- BE BE478066D patent/BE478066A/xx unknown
-
1942
- 1942-04-24 US US440337A patent/US2366714A/en not_active Expired - Lifetime
-
1943
- 1943-01-13 GB GB649/43A patent/GB558727A/en not_active Expired
- 1943-01-13 GB GB648/43A patent/GB558726A/en not_active Expired
-
1946
- 1946-02-28 FR FR922994D patent/FR922994A/en not_active Expired
-
1947
- 1947-08-08 CH CH270547D patent/CH270547A/en unknown
-
1950
- 1950-09-26 DE DES19568A patent/DE833287C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB558727A (en) | 1944-01-18 |
| DE833287C (en) | 1952-03-06 |
| FR922994A (en) | 1947-06-24 |
| US2366714A (en) | 1945-01-09 |
| NL68813C (en) | |
| LU28771A1 (en) | |
| BE478066A (en) | |
| CH270547A (en) | 1950-09-15 |
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