GB607680A - Improvements in or relating to methods of anodically electropolishing nickel and nickel-containing alloys and electrolytes suitable for use in said method - Google Patents
Improvements in or relating to methods of anodically electropolishing nickel and nickel-containing alloys and electrolytes suitable for use in said methodInfo
- Publication number
- GB607680A GB607680A GB15550/44A GB1555044A GB607680A GB 607680 A GB607680 A GB 607680A GB 15550/44 A GB15550/44 A GB 15550/44A GB 1555044 A GB1555044 A GB 1555044A GB 607680 A GB607680 A GB 607680A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- nickel
- chloride
- acid
- bath
- 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)
- Electrolytic Production Of Metals (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
607,680. Electrolytic polishing of nickel and nickel alloys. BATTELLE MEMORIAL INSTITUTE. Aug. 15, 1944, No. 15550. Convention date, July 23, 1943. Drawings to Specification. [Class 41] Nickel or an alloy containing at least 90 per cent of nickel is polished by anodic treatment in a concentrated acid bath in which is incorporated additional material to increase the solubility of the nickel salts formed; by this means nickel dissolved in the process is deposited at the cathode and objectionable increase of viscosity and precipitation of nickel salts from the bath is prevented. The bath may consist of phosphoric acid or a mixture of phosphoric and sulphuric acids, the addition consisting of hydrochloric acid or a soluble chloride, e.g. chloride of sodium, potassium, calcium, magnesium, nickel, aluminium or chromium. The addition may alternatively consist of a chlorinated organic acid such as monochloracetic acid. The chloride content may be equivalent to 0.04-2.5 per cent of HC1 with a preferred range of 0.04-0.4 per cent. The current density may be 50-300 amps. per sq. ft. The proportions of the bath may lie between 77-38 per cent H3PO4, 2-28 per cent H2SO4 and 15-34 per cent H2O with a minimum total acid content of 66 per cent and chloride addition as above stated. An alternative range of proportions is 85-21 per cent H3PO4, 0-45 per cent H2SO4, 15-34 per cent H2O with minimum total acid content of 66 per cent. Permissible values within these ranges depend on the temperature and the chloride content; ternary diagrams indicating ranges of proportions for temperature ranges of 80-140‹ F. and 90-125 F. are included in the Specification.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US495842A US2440715A (en) | 1943-07-23 | 1943-07-23 | Continuous method for electropolishing nickel and nickel-containing alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
GB607680A true GB607680A (en) | 1948-09-03 |
Family
ID=23970195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15550/44A Expired GB607680A (en) | 1943-07-23 | 1944-08-15 | Improvements in or relating to methods of anodically electropolishing nickel and nickel-containing alloys and electrolytes suitable for use in said method |
Country Status (7)
Country | Link |
---|---|
US (1) | US2440715A (en) |
BE (1) | BE478067A (en) |
CH (1) | CH277326A (en) |
DE (1) | DE855188C (en) |
GB (1) | GB607680A (en) |
LU (1) | LU28772A1 (en) |
NL (1) | NL69990C (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2874104A (en) * | 1954-10-26 | 1959-02-17 | Sylvania Electric Prod | Electropolishing method |
US2861930A (en) * | 1956-09-13 | 1958-11-25 | Smith Corp A O | Method of electropolishing and electrolytic solution therefor |
US3213008A (en) * | 1961-06-14 | 1965-10-19 | Ametek Inc | Electrolytic polishing of stainless steel |
US4038702A (en) * | 1973-09-21 | 1977-08-02 | Philip Nicholas Sawyer | Electrochemical and chemical methods for production of non-thrombogenic metal heart valves |
SE9101469D0 (en) * | 1991-05-15 | 1991-05-15 | Sandvik Ab | ETSMETOD |
CN103822817A (en) * | 2014-02-28 | 2014-05-28 | 金川集团股份有限公司 | Pure nickel chemical polishing etching solution and application method |
US12043915B2 (en) | 2019-10-08 | 2024-07-23 | Lake Region Manufacturing, Inc. | Electropolishing of MP35N wire for fatigue life improvement of an implantable lead |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE225873C (en) * | ||||
US1918477A (en) * | 1933-07-18 | Gesellschait | ||
US2003051A (en) * | 1933-07-05 | 1935-05-28 | Victor Chemical Works | Purification of strong phosphoric acid |
DE682248C (en) * | 1937-05-20 | 1939-10-20 | Hans Burkhardt Dr Ing | Electrolytic glazing process for stainless steel alloys |
GB504026A (en) * | 1937-09-17 | 1939-04-17 | Harold Robert Priston | Improvements in or relating to the polishing of nickel applicable also to the production of decorative or other designs upon the surface |
US2315695A (en) * | 1938-11-23 | 1943-04-06 | Battelle Memorial Institute | Method of polishing metals |
GB526966A (en) * | 1938-12-21 | 1940-09-30 | Houdaille Hershey Corp | Improvements in or relating to methods of electrobuffing nickel |
US2331721A (en) * | 1939-08-12 | 1943-10-12 | Rustless Iron & Steel Corp | Polishing stainless iron and steel |
BE478065A (en) * | 1939-08-16 | |||
US2366713A (en) * | 1939-11-06 | 1945-01-09 | Battelle Memorial Institute | Method of anodically polishing nickel |
BE478066A (en) * | 1942-04-24 |
-
0
- NL NL69990D patent/NL69990C/xx active
- BE BE478067D patent/BE478067A/xx unknown
- LU LU28772D patent/LU28772A1/xx unknown
-
1943
- 1943-07-23 US US495842A patent/US2440715A/en not_active Expired - Lifetime
-
1944
- 1944-08-15 GB GB15550/44A patent/GB607680A/en not_active Expired
-
1947
- 1947-08-08 CH CH277326D patent/CH277326A/en unknown
-
1950
- 1950-09-26 DE DES19569A patent/DE855188C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2440715A (en) | 1948-05-04 |
NL69990C (en) | |
LU28772A1 (en) | |
CH277326A (en) | 1951-08-31 |
DE855188C (en) | 1952-11-10 |
BE478067A (en) |
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