JPS5696091A - Formation of light-colored oxide coating on aluminum surface - Google Patents
Formation of light-colored oxide coating on aluminum surfaceInfo
- Publication number
- JPS5696091A JPS5696091A JP17136279A JP17136279A JPS5696091A JP S5696091 A JPS5696091 A JP S5696091A JP 17136279 A JP17136279 A JP 17136279A JP 17136279 A JP17136279 A JP 17136279A JP S5696091 A JPS5696091 A JP S5696091A
- Authority
- JP
- Japan
- Prior art keywords
- soln
- light
- oxide coating
- contg
- product
- 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
Landscapes
- Electrochemical Coating By Surface Reaction (AREA)
Abstract
PURPOSE: To form thick, light-colored coating of uniform color tone excellent in resistance to corrosion, chemicals, and wear, by performing usual anodic oxidation of the surface of Al, then by performing anodic oxidation by using a specific electrolytic soln.
CONSTITUTION: Al or Al alloy product is degreased with an aqueous soln. contg. NaOH, the neutralized with acid such as HNO3 etc. and is washed. The product is anodic oxidized as usual in an aqueous soln. contg. 15% H2SO4 to form porous oxide coating. The product is then anodic oxidized by using aqueous soln. contg. 10W300g/l maleic acid, 1W10g/l H2SO4 as electrolytic soln., and its pores are sealed by immersing it in an ion exchange soln. at ≥95°C temp. Hereby thick, light-colored oxide coating excellent in resistance to corrosion, chemicals, and wear, which is of yellow or brown color lighter than that which is expected from its thickness, is obtained.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17136279A JPS5696091A (en) | 1979-12-28 | 1979-12-28 | Formation of light-colored oxide coating on aluminum surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17136279A JPS5696091A (en) | 1979-12-28 | 1979-12-28 | Formation of light-colored oxide coating on aluminum surface |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5696091A true JPS5696091A (en) | 1981-08-03 |
Family
ID=15921770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17136279A Pending JPS5696091A (en) | 1979-12-28 | 1979-12-28 | Formation of light-colored oxide coating on aluminum surface |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5696091A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1330794C (en) * | 2004-10-12 | 2007-08-08 | 南京大学 | Preparation for self-supporting ordered through hole alumina film |
-
1979
- 1979-12-28 JP JP17136279A patent/JPS5696091A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1330794C (en) * | 2004-10-12 | 2007-08-08 | 南京大学 | Preparation for self-supporting ordered through hole alumina film |
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