US2762764A - Method of electroplating aluminum and electrolyte therefor - Google Patents
Method of electroplating aluminum and electrolyte therefor Download PDFInfo
- Publication number
- US2762764A US2762764A US525391A US52539155A US2762764A US 2762764 A US2762764 A US 2762764A US 525391 A US525391 A US 525391A US 52539155 A US52539155 A US 52539155A US 2762764 A US2762764 A US 2762764A
- Authority
- US
- United States
- Prior art keywords
- electrolyte
- aluminum
- chloride
- alkali metal
- fluoride
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/66—Electroplating: Baths therefor from melts
Definitions
- This invention relates to an improved molten salt electrolyte and method for electrodeposition of aluminum.
- An object of my invention is to provide an improved electrolyte and method which overcome the foregoing disadvantages, that is, which furnish bright smooth coatings without the presence of toxic metals and are operable with higher current densities and on moving continuous lengths of base metal.
- a further object is to provide an improved electrolyte incorporating an alkali metal fluoride, which I have found overcomes the disadvantages of previous electrolytes.
- Electrolytes of my invention consist by weight of the following:
- anodes of high purity aluminum metal and a base metal cathode are immersed in a molten electrolyte of the foregoing composition.
- suitable base metals are steel or other ferrous metals, copper and brass.
- the temperature of the electrolyte is maintained between 400 and 900 F., but preferably between 450 and 650 F.
- the base metal can be in the form of continuous steel strip, in which event the physical arrangement is similar to that used for electrolytic tinning; that is, the strip travels vertically between vertically disposed anodes on each side.
- the strip speed 2,762,764 Patented Sept. 1 1, 1956
- Example I Per cent Aluminum chloride Sodium chloride 18.5 Sodium fluoride A 1.5
- Example II Per cent Aluminum chloride u 80
- Example III Per cent Aluminum chloride 75 Potassium chloride 23.5
- Example IV Per cent Aluminum chloride 75 Potassium chloride 23 Potassium fluoride 2 in each example the electrolyte can be maintained at a temperature of about 550 F. Smooth bright coatings can be deposited on continuous lengths of such base metals as steel strip or copper Wire having a surface speed of about 500 feet per minute with a current density of about 250 amperes per square foot.
- An anhydrous salt electrolyte for electrodeposition of aluminum said electrolyte being molten when heated to at least 400 F. and consisting by weight of the following:
- An anhydrous salt electrolyte for electrodeposition of aluminum said electrolyte being molten when heated to at least 400 F. and consisting by weight of the following:
- a method of electrolytically depositing aluminum coatings on a base metal of the group consisting of ferrous metals, copper and brass comprising immersing an aluminum anode and a base metal cathode in an anhydrous molten salt electrolyte consisting by weight of the following:
- I Per cent Aluminum chloride 65 to 85 Alkali metal chloride 14.5 to 34.5 Alkali metal fluoride 0.5 to 4 while maintaining the electrolyte temperature at 450 to 650 F. and the current density at 200 to 500 amperes per square foot.
- chloride 4 and fluoride salts are of an alkali metal of the group consisting of sodium and potassium.
- a method of electrolytically depositing aluminum on continuous steel strip comprising passing the strip at speeds of 400 to 1000 feet per minute through an anhydrous molten salt electrolyte containing anodes of aluminum metal, said electrolyte consisting by weight of the following:
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
- Coating With Molten Metal (AREA)
- Chemical Treatment Of Metals (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE546819D BE546819A (de) | 1955-01-11 | ||
BE539320D BE539320A (de) | 1955-01-11 | ||
GB15612/55A GB775055A (en) | 1955-01-11 | 1955-05-31 | Method of electroplating aluminum and electrolyte therefor |
FR1126358D FR1126358A (fr) | 1955-01-11 | 1955-06-22 | Procédé de dépôt électrolytique de l'aluminium et électrolyte destiné à ce procédé |
DEU3400A DE1006689B (de) | 1955-01-11 | 1955-06-22 | Elektrolyt und Verfahren zur galvanischen Abscheidung von Aluminium auf Eisen |
US525391A US2762764A (en) | 1955-01-11 | 1955-07-29 | Method of electroplating aluminum and electrolyte therefor |
GB9740/56A GB792635A (en) | 1955-01-11 | 1956-03-28 | Method of electroplating with aluminium and electrolyte therefor |
FR69935D FR69935E (fr) | 1955-01-11 | 1956-06-07 | Procédé de dépôt électrolytique de l'aluminium et électrolyte destiné à ce procédé |
DEU4007A DE1038370B (de) | 1955-01-11 | 1956-07-06 | Verwendung von Baedern und Anwendung des Verfahrens zur galvanischen Abscheidung vonAluminiumueberzuegen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US775055XA | 1955-01-11 | 1955-01-11 | |
US525391A US2762764A (en) | 1955-01-11 | 1955-07-29 | Method of electroplating aluminum and electrolyte therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
US2762764A true US2762764A (en) | 1956-09-11 |
Family
ID=26759348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US525391A Expired - Lifetime US2762764A (en) | 1955-01-11 | 1955-07-29 | Method of electroplating aluminum and electrolyte therefor |
Country Status (5)
Country | Link |
---|---|
US (1) | US2762764A (de) |
BE (2) | BE546819A (de) |
DE (2) | DE1006689B (de) |
FR (2) | FR1126358A (de) |
GB (2) | GB775055A (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3167403A (en) * | 1960-06-09 | 1965-01-26 | Nat Steel Corp | Base materials coated with an alloy of aluminum and manganese |
US3214820A (en) * | 1963-02-08 | 1965-11-02 | Nat Steel Corp | Steel foil and manufacture |
US3236751A (en) * | 1961-05-19 | 1966-02-22 | Matsushita Electric Ind Co Ltd | Aluminum deposition from an anhydrous fusible salt electrolyte |
US3259557A (en) * | 1962-03-02 | 1966-07-05 | Nat Steel Corp | Method of electrodepositing aluminum |
US3267008A (en) * | 1962-10-04 | 1966-08-16 | Nat Steel Corp | Method of recovering aluminum halide from metal strip electrodeposited with an aluminum-containing coating from a fused salt bath |
US3268422A (en) * | 1960-06-09 | 1966-08-23 | Nat Steel Corp | Electroplating bath containing aluminum and manganese-bearing materials and method of forming aluminummanganese alloy coatings on metallic bases |
US20180209057A1 (en) * | 2015-07-16 | 2018-07-26 | Battelle Energy Alliance, Llc | Methods and systems for aluminum electroplating |
US11746434B2 (en) | 2021-07-21 | 2023-09-05 | Battelle Energy Alliance, Llc | Methods of forming a metal coated article |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL244622A (de) * | 1958-10-24 | |||
CN102941700A (zh) * | 2012-11-14 | 2013-02-27 | 无锡市光源不锈钢制品有限公司 | 覆铝不锈钢带 |
RU2658550C1 (ru) * | 2016-12-28 | 2018-06-21 | Федеральное государственное бюджетное учреждение науки Институт высокотемпературной электрохимии Уральского отделения Российской Академии наук | Способ получения диффузионного алюминидного покрытия на низкоуглеродистой стали |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1488553A (en) * | 1923-01-26 | 1924-04-01 | Willis G Waldo | Process of coating sheet steel with aluminum |
GB659927A (en) * | 1948-04-05 | 1951-10-31 | American Electro Metal Corp | Improvements relating to the coating electrolytically of metal articles |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE829504C (de) * | 1948-11-19 | 1952-07-10 | Hans Grothe Dr Ing | Verfahren zur elektrolytischen Gewinnung von Aluminium |
-
0
- BE BE539320D patent/BE539320A/xx unknown
- BE BE546819D patent/BE546819A/xx unknown
-
1955
- 1955-05-31 GB GB15612/55A patent/GB775055A/en not_active Expired
- 1955-06-22 DE DEU3400A patent/DE1006689B/de active Pending
- 1955-06-22 FR FR1126358D patent/FR1126358A/fr not_active Expired
- 1955-07-29 US US525391A patent/US2762764A/en not_active Expired - Lifetime
-
1956
- 1956-03-28 GB GB9740/56A patent/GB792635A/en not_active Expired
- 1956-06-07 FR FR69935D patent/FR69935E/fr not_active Expired
- 1956-07-06 DE DEU4007A patent/DE1038370B/de active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1488553A (en) * | 1923-01-26 | 1924-04-01 | Willis G Waldo | Process of coating sheet steel with aluminum |
GB659927A (en) * | 1948-04-05 | 1951-10-31 | American Electro Metal Corp | Improvements relating to the coating electrolytically of metal articles |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3167403A (en) * | 1960-06-09 | 1965-01-26 | Nat Steel Corp | Base materials coated with an alloy of aluminum and manganese |
US3268422A (en) * | 1960-06-09 | 1966-08-23 | Nat Steel Corp | Electroplating bath containing aluminum and manganese-bearing materials and method of forming aluminummanganese alloy coatings on metallic bases |
US3236751A (en) * | 1961-05-19 | 1966-02-22 | Matsushita Electric Ind Co Ltd | Aluminum deposition from an anhydrous fusible salt electrolyte |
US3259557A (en) * | 1962-03-02 | 1966-07-05 | Nat Steel Corp | Method of electrodepositing aluminum |
US3267008A (en) * | 1962-10-04 | 1966-08-16 | Nat Steel Corp | Method of recovering aluminum halide from metal strip electrodeposited with an aluminum-containing coating from a fused salt bath |
US3214820A (en) * | 1963-02-08 | 1965-11-02 | Nat Steel Corp | Steel foil and manufacture |
US20180209057A1 (en) * | 2015-07-16 | 2018-07-26 | Battelle Energy Alliance, Llc | Methods and systems for aluminum electroplating |
US11136686B2 (en) * | 2015-07-16 | 2021-10-05 | Battelle Energy Alliance, Llc. | Methods and systems for aluminum electroplating |
US11746434B2 (en) | 2021-07-21 | 2023-09-05 | Battelle Energy Alliance, Llc | Methods of forming a metal coated article |
Also Published As
Publication number | Publication date |
---|---|
DE1006689B (de) | 1957-04-18 |
DE1038370B (de) | 1958-09-04 |
GB792635A (en) | 1958-04-02 |
BE546819A (de) | |
GB775055A (en) | 1957-05-15 |
FR1126358A (fr) | 1956-11-21 |
FR69935E (fr) | 1959-01-09 |
BE539320A (de) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2762764A (en) | Method of electroplating aluminum and electrolyte therefor | |
US2926124A (en) | Tin nickel alloy plating process and composition | |
US3167403A (en) | Base materials coated with an alloy of aluminum and manganese | |
US3730853A (en) | Electroplating bath for depositing tin-lead alloy plates | |
US2693444A (en) | Electrodeposition of chromium and alloys thereof | |
US3268422A (en) | Electroplating bath containing aluminum and manganese-bearing materials and method of forming aluminummanganese alloy coatings on metallic bases | |
US3522155A (en) | Method of electrodepositing a tinbismuth alloy and compositions therefor | |
US3672965A (en) | Electroplating of aluminum | |
US3586611A (en) | Process for the electrolytic deposition of gold-copper-cadmium alloys | |
US2080479A (en) | Plating of zinc | |
US3729396A (en) | Rhodium plating composition and method for plating rhodium | |
US4167459A (en) | Electroplating with Ni-Cu alloy | |
US2793990A (en) | Electrodeposition of alloys containing copper and tin | |
US3334030A (en) | Production of electrolytic tinplate | |
US3785940A (en) | Method for electrolytically treating the surface of a steel plate with a chromate solution | |
US2778787A (en) | Electrodeposition of iron zinc alloys | |
US2646397A (en) | Electroplating zinc using titanium containing electrolyte | |
US3054737A (en) | Process and bath for electrosmoothing ferrous metals | |
US3075897A (en) | Method of making tin plate | |
NO149069B (no) | Gjenstand omfattende et sinkbasert metall for anvendelse som slitesterk del og fremgangsmaate og middel for tilvirkning derav | |
US2418970A (en) | Process of electrolytically depositing iron and iron alloys | |
US2870070A (en) | Electrodeposition of tin and electrolyte therefor | |
US2776939A (en) | Anode and method of continuous plating | |
US2817629A (en) | Antimony plating bath | |
US1904107A (en) | Electroplating with aluminum |