JPS55131197A - Electrolytic coloring method for aluminum - Google Patents
Electrolytic coloring method for aluminumInfo
- Publication number
- JPS55131197A JPS55131197A JP3776379A JP3776379A JPS55131197A JP S55131197 A JPS55131197 A JP S55131197A JP 3776379 A JP3776379 A JP 3776379A JP 3776379 A JP3776379 A JP 3776379A JP S55131197 A JPS55131197 A JP S55131197A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- electrolytic
- sulfonic acid
- anodic oxidation
- cathode
- 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 carry out the above mentioned coloration of stable color tone, by alternately carrying out direct current and alternating current electrolytic treatments making Al as cathode, in the bath containing hydroxyalkane (alkene) sulfonic acid and its metal salt, after carrying out anodic oxidation treatment of Al.
CONSTITUTION: Anodic oxidation treatment of Al or Al alloy is carried out in the electrolytic bath, such as sulfuric acid etc. Direct current and alternating current electrolytic treatments are alternately carried out making Al or Al alloy as cathode, dipping Al or Al alloy formed the above anodic oxidation coating, in the electrolytic bath containing hydroxyalkane sulfonic acid or hydroxyalkene sulfonic acid shown in the formula I (R; saturated or unsaturated straight chain or branched chain C1W12 hydrocarbon part, OH and SO3H; chained on the optional carbon of the hydrocarbon) and its metal salts, for example, heavy metal salts of Sn, Ni etc. By this method, Al or Al alloy is able to color in a stable and uniform color tone, even when the electrolytic condition is varied.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3776379A JPS55131197A (en) | 1979-03-30 | 1979-03-30 | Electrolytic coloring method for aluminum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3776379A JPS55131197A (en) | 1979-03-30 | 1979-03-30 | Electrolytic coloring method for aluminum |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55131197A true JPS55131197A (en) | 1980-10-11 |
Family
ID=12506502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3776379A Pending JPS55131197A (en) | 1979-03-30 | 1979-03-30 | Electrolytic coloring method for aluminum |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55131197A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5650338A (en) * | 1991-08-26 | 1997-07-22 | Semiconductor Energy Laboratory Co., Ltd. | Method for forming thin film transistor |
-
1979
- 1979-03-30 JP JP3776379A patent/JPS55131197A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5650338A (en) * | 1991-08-26 | 1997-07-22 | Semiconductor Energy Laboratory Co., Ltd. | Method for forming thin film transistor |
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