JPS5677393A - Coloring method for anodic oxidation film of aluminum or its alloy - Google Patents
Coloring method for anodic oxidation film of aluminum or its alloyInfo
- Publication number
- JPS5677393A JPS5677393A JP15398879A JP15398879A JPS5677393A JP S5677393 A JPS5677393 A JP S5677393A JP 15398879 A JP15398879 A JP 15398879A JP 15398879 A JP15398879 A JP 15398879A JP S5677393 A JPS5677393 A JP S5677393A
- Authority
- JP
- Japan
- Prior art keywords
- electrolysis
- cathodic
- alloy
- aluminum
- current
- 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.)
- Granted
Links
Landscapes
- Electrochemical Coating By Surface Reaction (AREA)
Abstract
PURPOSE: To produce uniform and deep colored film, by immersing aluminum having anodic oxide film into an electrolytic bath of metallic salt, and by repeating two or more cycles of the combined treatment of no current state, AC electrolysis, and cathodic DC electrolysis.
CONSTITUTION: Anodic oxide film is formed on the surface of Al, or Al alloy. Said Al is immersed in an electrolytic bath made by dissolving metallic salt, and is left to stand in no current state for a prescribed time e.g. ≥60sec, then AC electrolysis is performed at 6W20V voltage, 0.05W1.0A/dm2 current density. For the metallic bath is used one or more members among the soln. of Ni salts, Co salts. Said soln. is adjusted at about 2W6pH, if necessary boric acid or Mg sulfate is added. Then cathodic DC electrolysis is performed using Al as a cathode at 30W 40V voltage, 0.05W1.0A/dm2 current density. After a prescribed time e.g. about 5W15sec, current is removed and then cathodic DC electrolysis is performed once again, thus ≥two cycles of these operation are repeated. Hereby, beautiful film having uniform, deep color is produced.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15398879A JPS5677393A (en) | 1979-11-28 | 1979-11-28 | Coloring method for anodic oxidation film of aluminum or its alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15398879A JPS5677393A (en) | 1979-11-28 | 1979-11-28 | Coloring method for anodic oxidation film of aluminum or its alloy |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5677393A true JPS5677393A (en) | 1981-06-25 |
JPS578200B2 JPS578200B2 (en) | 1982-02-15 |
Family
ID=15574449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15398879A Granted JPS5677393A (en) | 1979-11-28 | 1979-11-28 | Coloring method for anodic oxidation film of aluminum or its alloy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5677393A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106086986A (en) * | 2016-08-28 | 2016-11-09 | 李金� | A kind of control method of aluminium section bar electrolytic coloring power supply |
-
1979
- 1979-11-28 JP JP15398879A patent/JPS5677393A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106086986A (en) * | 2016-08-28 | 2016-11-09 | 李金� | A kind of control method of aluminium section bar electrolytic coloring power supply |
Also Published As
Publication number | Publication date |
---|---|
JPS578200B2 (en) | 1982-02-15 |
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