JPS55115991A - Direct current intermittent electrolytic coloring method of aluminum and aluminum alloy - Google Patents
Direct current intermittent electrolytic coloring method of aluminum and aluminum alloyInfo
- Publication number
- JPS55115991A JPS55115991A JP2394379A JP2394379A JPS55115991A JP S55115991 A JPS55115991 A JP S55115991A JP 2394379 A JP2394379 A JP 2394379A JP 2394379 A JP2394379 A JP 2394379A JP S55115991 A JPS55115991 A JP S55115991A
- Authority
- JP
- Japan
- Prior art keywords
- sulfuric acid
- aluminum
- alloy
- film
- electrolytic coloring
- 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.)
- Pending
Links
Abstract
PURPOSE: To form the colored film of superior corrosion resistance and abrasion resistance by anodizing the Al or Al alloy, which has been formed with a porous oxide film through anodic oxidation, straightly as anode without rinsing, in an aqueous sulfuric acid solution containing heavy metals then intermitting DC constant voltage electrolysis with the same as cathode.
CONSTITUTION: Al or Al alloy is subjected to primary electrolysis treatment, i.e., anodic oxidation treatment, in an aqueous solution of 80W300g/l sulfuric acid (primary electrolyte) to let the porous oxide film of the target film thickness be formed. Next, this treated matter being held intact without rinsing, as cathode, is intermittently subjected to DC constant voltage electrolysis in an aqueous solution of 30W 200g/l sulfuric acid (secondary electrolytic coloring solution) containing heavy metal salts (e.g.: stannous sulfate) being coloring metals. As a result of this, the even dark color film is obtained with less influence of impurities.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2394379A JPS55115991A (en) | 1979-03-01 | 1979-03-01 | Direct current intermittent electrolytic coloring method of aluminum and aluminum alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2394379A JPS55115991A (en) | 1979-03-01 | 1979-03-01 | Direct current intermittent electrolytic coloring method of aluminum and aluminum alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55115991A true JPS55115991A (en) | 1980-09-06 |
Family
ID=12124612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2394379A Pending JPS55115991A (en) | 1979-03-01 | 1979-03-01 | Direct current intermittent electrolytic coloring method of aluminum and aluminum alloy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55115991A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114525576A (en) * | 2022-01-04 | 2022-05-24 | 湖南大学 | Corrosion processing method of 7XXX series aluminum alloy component |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4932414A (en) * | 1972-07-21 | 1974-03-25 | ||
JPS5285941A (en) * | 1976-01-12 | 1977-07-16 | Mitsui Keikinzoku Kako | Electrolytic pigmentation of aluminum and its alloy |
-
1979
- 1979-03-01 JP JP2394379A patent/JPS55115991A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4932414A (en) * | 1972-07-21 | 1974-03-25 | ||
JPS5285941A (en) * | 1976-01-12 | 1977-07-16 | Mitsui Keikinzoku Kako | Electrolytic pigmentation of aluminum and its alloy |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114525576A (en) * | 2022-01-04 | 2022-05-24 | 湖南大学 | Corrosion processing method of 7XXX series aluminum alloy component |
CN114525576B (en) * | 2022-01-04 | 2023-10-27 | 湖南大学 | Corrosion processing method of 7XXX aluminum alloy member |
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