JPS56108894A - Surface treatment of aluminum - Google Patents
Surface treatment of aluminumInfo
- Publication number
- JPS56108894A JPS56108894A JP740081A JP740081A JPS56108894A JP S56108894 A JPS56108894 A JP S56108894A JP 740081 A JP740081 A JP 740081A JP 740081 A JP740081 A JP 740081A JP S56108894 A JPS56108894 A JP S56108894A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- bath
- contg
- coating
- salt
- 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 colored coating of a novel color tone excellent in quality and performance, by performing the anodic oxidation of Al in a bath contg. essentially N compound, and contg. acid or its salt, then by electrolytic pigmentation of the Al in a coloring bath contg. essentially metallic salt or acid etc.
CONSTITUTION: A bath consisting essentially of N compound (e.g. sulfamic acid, ammonium sulfate etc.), to which is added inorg. acid such as sulfuric acid or org. acid such as oxalic acid, or the salts of these acids, is prepared. Al or Al alloy is anodic oxidized in the bath by using DC, or by simultaneous use of DC and AC, or by use of wave formed current having the same effect as those of said electric currents. The anodic oxide coating of said Al is subjected to publicly konwn electrolytic coloring, i.e., said Al is subjected to AC electrolysis or DC cathodic electrolysis in a coloring bath contg. salt of metal such as Ni, Co etc. or acid to form colored coating of novel color tone on said anodic oxide coating. The colored coating hereby obtained is excellent in throwing power and has excellent appearance performance without producing breakage phenomenon of coating or without deposition of metal or metallic compound on the surface.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP740081A JPS56108894A (en) | 1981-01-20 | 1981-01-20 | Surface treatment of aluminum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP740081A JPS56108894A (en) | 1981-01-20 | 1981-01-20 | Surface treatment of aluminum |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP129478A Division JPS5494445A (en) | 1978-01-10 | 1978-01-10 | Surface treatment of aluminum |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56108894A true JPS56108894A (en) | 1981-08-28 |
Family
ID=11664834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP740081A Pending JPS56108894A (en) | 1981-01-20 | 1981-01-20 | Surface treatment of aluminum |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56108894A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4916179A (en) * | 1972-06-09 | 1974-02-13 | ||
JPS4981240A (en) * | 1972-11-15 | 1974-08-06 | ||
JPS5037145A (en) * | 1973-08-08 | 1975-04-07 |
-
1981
- 1981-01-20 JP JP740081A patent/JPS56108894A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4916179A (en) * | 1972-06-09 | 1974-02-13 | ||
JPS4981240A (en) * | 1972-11-15 | 1974-08-06 | ||
JPS5037145A (en) * | 1973-08-08 | 1975-04-07 |
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