JPS5518540A - Surface-treating method for magnesium or magnesium alloy - Google Patents
Surface-treating method for magnesium or magnesium alloyInfo
- Publication number
- JPS5518540A JPS5518540A JP8990178A JP8990178A JPS5518540A JP S5518540 A JPS5518540 A JP S5518540A JP 8990178 A JP8990178 A JP 8990178A JP 8990178 A JP8990178 A JP 8990178A JP S5518540 A JPS5518540 A JP S5518540A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- alloy
- primary coating
- magnesium
- electrolyzed
- 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 increase the hardness and corrosion resistance of coating, by forming primary coating on the surface of Mg of Mg alloy by anodic oxidation method, then by forming secondary coating by a.c. electrolysis in aq. metallic salt soln.
CONSTITUTION: Mg or Mg alloy is, for example, a.c. electrolyzed in an aq. soln. comprising 240 g/l NaOH, 83 ml/l ethylene glycol, 2.5 g/l oxalic acid, at 80°C, and 20 V to form primary coating. Thereafter, it is washed with water, then a.c. electrolyzed in the secondary electrolytic bath comprising 30W50 g/l nickel sulfate, 30 g/l boric acid at a voltage 10W15 V for several min., and is washed with water and dried. Hereby, an ash-colored coating of beautiful apperarance is obtained by anodic oxidation. The coating adheres strongly to the primary coating, and has increased hardness and corrosion resistance, without causing damage in the primary coating.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8990178A JPS5518540A (en) | 1978-07-25 | 1978-07-25 | Surface-treating method for magnesium or magnesium alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8990178A JPS5518540A (en) | 1978-07-25 | 1978-07-25 | Surface-treating method for magnesium or magnesium alloy |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5518540A true JPS5518540A (en) | 1980-02-08 |
JPS5611391B2 JPS5611391B2 (en) | 1981-03-13 |
Family
ID=13983628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8990178A Granted JPS5518540A (en) | 1978-07-25 | 1978-07-25 | Surface-treating method for magnesium or magnesium alloy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5518540A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106480487A (en) * | 2016-09-20 | 2017-03-08 | 东南大学 | A kind of preparation method of the corrosion-resistant film layer of magnesium based metal antibacterial and mouldproof |
-
1978
- 1978-07-25 JP JP8990178A patent/JPS5518540A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106480487A (en) * | 2016-09-20 | 2017-03-08 | 东南大学 | A kind of preparation method of the corrosion-resistant film layer of magnesium based metal antibacterial and mouldproof |
Also Published As
Publication number | Publication date |
---|---|
JPS5611391B2 (en) | 1981-03-13 |
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