GB655699A - Improvements in or relating to the brightening of surfaces of aluminium or aluminiumalloy - Google Patents
Improvements in or relating to the brightening of surfaces of aluminium or aluminiumalloyInfo
- Publication number
- GB655699A GB655699A GB24344/48A GB2434448A GB655699A GB 655699 A GB655699 A GB 655699A GB 24344/48 A GB24344/48 A GB 24344/48A GB 2434448 A GB2434448 A GB 2434448A GB 655699 A GB655699 A GB 655699A
- Authority
- GB
- United Kingdom
- Prior art keywords
- article
- per cent
- solution
- aluminium
- phosphate
- 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
- C25F3/18—Polishing of light metals
- C25F3/20—Polishing of light metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S205/00—Electrolysis: processes, compositions used therein, and methods of preparing the compositions
- Y10S205/917—Treatment of workpiece between coating steps
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
655,699. Brightening chromium or aluminium alloys electrolytically. SOC. DE PRODUITS CHIMIQUES DESTERRES RARES. Sept. 16, 1948, No. 24344. Convention date, Sept. 24, 1947. [Class 41] A process of brightening the surface of an article of aluminium or aluminium alloy comprises degreasing the surface, immersing the article in a strongly acid phospho-chromic solution, submitting the article as anode to electrolyte treatment in an alkaline bath containing phosphate and aluminate ions, immersing the article again in a strongly acid phospho-chromic solution, and submitting the article to anodic oxidation in an acid electrolyte. The first-mentioned strongly acid solution preferably contains about 30 to 35 per cent phosphoric acid and about 10 to 15 per cent chromic acid and has a pH value below 1. The article may be degreased electrolytically in a solution of 5 per cent sodium carbonate, 5 per cent sodium phosphate and 2 per cent sodium silicate at room temperature,. with a voltage of 10 to 12 volts. The bath containing phosphate and aluminate ions may be prepared by dissolving trisodium phosphate and sodium aluminate in water or by dissolving aluminium phosphate in caustic soda solution. Potassium compounds may be used instead of sodium compounds. The anodized article may be sealed in boiling water or in an aqueous solution of nickel acetate.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR966790T | 1947-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB655699A true GB655699A (en) | 1951-08-01 |
Family
ID=9500215
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24344/48A Expired GB655699A (en) | 1947-09-24 | 1948-09-16 | Improvements in or relating to the brightening of surfaces of aluminium or aluminiumalloy |
Country Status (7)
Country | Link |
---|---|
US (1) | US2647865A (en) |
BE (1) | BE484777A (en) |
CH (1) | CH280488A (en) |
FR (1) | FR966790A (en) |
GB (1) | GB655699A (en) |
IT (1) | IT454258A (en) |
NL (1) | NL71913C (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2721835A (en) * | 1951-07-07 | 1955-10-25 | Shwayder Bros Inc | Surface treatment of aluminum articles |
US2705500A (en) * | 1953-11-04 | 1955-04-05 | Leon L Deer | Cleaning aluminum |
DE1178946B (en) * | 1957-04-24 | 1964-10-01 | Siemens Ag | Etching liquid for the electrolytic roughening of aluminum anodes for electrolytic capacitors |
US2941930A (en) * | 1957-05-28 | 1960-06-21 | Reynolds Metals Co | Decorative aluminum surface |
US3041259A (en) * | 1959-07-31 | 1962-06-26 | Hanson Van Winkle Munning Co | Cleaning aluminum surfaces |
US4647315A (en) * | 1985-07-01 | 1987-03-03 | Olin Corporation | Copper stainproofing technique |
US5057193A (en) * | 1989-04-05 | 1991-10-15 | Olin Corporation | Anti-tarnish treatment of metal foil |
US4961828A (en) * | 1989-04-05 | 1990-10-09 | Olin Corporation | Treatment of metal foil |
US4952285A (en) * | 1989-04-14 | 1990-08-28 | Olin Corporation | Anti-tarnish treatment of metal foil |
DE3917188A1 (en) * | 1989-05-26 | 1990-11-29 | Happich Gmbh Gebr | PROCESS FOR PRODUCING COLORED SURFACES ON PARTS OF ALUMINUM OR ALUMINUM ALLOYS |
DE3917186A1 (en) * | 1989-05-26 | 1990-11-29 | Happich Gmbh Gebr | CHEMICAL METHOD FOR AVOIDING A RAINBOW EFFECT Caused By The Oxide Layer Formed In The Shining Of Parts Of Aluminum Or Aluminum Alloys |
US5022968A (en) * | 1990-09-20 | 1991-06-11 | Olin Corporation | Method and composition for depositing a chromium-zinc anti-tarnish coating on copper foil |
US5230932A (en) * | 1989-10-13 | 1993-07-27 | Olin Corporation | Chromium-zinc anti-tarnish coating for copper foil |
US5250363A (en) * | 1989-10-13 | 1993-10-05 | Olin Corporation | Chromium-zinc anti-tarnish coating for copper foil having a dark color |
US5098796A (en) * | 1989-10-13 | 1992-03-24 | Olin Corporation | Chromium-zinc anti-tarnish coating on copper foil |
US5071520A (en) * | 1989-10-30 | 1991-12-10 | Olin Corporation | Method of treating metal foil to improve peel strength |
US5164235A (en) * | 1990-03-06 | 1992-11-17 | Olin Corporation | Anti-tarnish treatment of metal foil |
KR100297179B1 (en) * | 1990-07-02 | 2002-12-26 | 올린 코포레이션 | A method for electrodepositing copper or copper alloy foil with chromium-zinc ion to impart discoloration resistance to the foil and a basic electrolyte solution for electrodepositing a discoloration preventing film on copper or copper alloy foil. |
CN114855240A (en) * | 2022-05-17 | 2022-08-05 | 山东南山铝业股份有限公司 | Medium-temperature hole sealing hydration experiment process |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL38285C (en) * | 1932-05-26 | 1900-01-01 | ||
GB449162A (en) * | 1934-12-17 | 1936-06-17 | Alfred Norman Douglas Pullen | Improvements in and relating to the surface treatment of aluminium and aluminium alloys |
DE688668C (en) * | 1937-03-20 | 1940-02-28 | Langbein Pfanhauser Werke Akt | Process for producing shiny surfaces on aluminum and its alloys |
US2153060A (en) * | 1938-07-01 | 1939-04-04 | Aluminum Co Of America | Process for producing reflective aluminum surfaces |
GB558925A (en) * | 1942-07-23 | 1944-01-27 | Ernest Windsor Bowen | Improvements in and relating to the electrolytic treatment of aluminium and aluminium base alloys |
US2353786A (en) * | 1943-11-01 | 1944-07-18 | Russell J Horsefield | Solution and method for stripping oxide films from aluminum and its alloys |
-
0
- NL NL71913D patent/NL71913C/xx active
- IT IT454258D patent/IT454258A/it unknown
- BE BE484777D patent/BE484777A/xx unknown
-
1947
- 1947-09-24 FR FR966790D patent/FR966790A/en not_active Expired
-
1948
- 1948-09-07 CH CH280488D patent/CH280488A/en unknown
- 1948-09-16 GB GB24344/48A patent/GB655699A/en not_active Expired
- 1948-09-17 US US49844A patent/US2647865A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2647865A (en) | 1953-08-04 |
BE484777A (en) | |
NL71913C (en) | |
IT454258A (en) | |
CH280488A (en) | 1952-01-31 |
FR966790A (en) | 1950-10-18 |
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