JPS5735695A - Corrosion preventive treatment liquid for magnesium alloy - Google Patents
Corrosion preventive treatment liquid for magnesium alloyInfo
- Publication number
- JPS5735695A JPS5735695A JP10912780A JP10912780A JPS5735695A JP S5735695 A JPS5735695 A JP S5735695A JP 10912780 A JP10912780 A JP 10912780A JP 10912780 A JP10912780 A JP 10912780A JP S5735695 A JPS5735695 A JP S5735695A
- Authority
- JP
- Japan
- Prior art keywords
- magnesium
- preventive treatment
- alloy
- cell
- sulfate
- 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 perform corrosion preventive treatment of less dimensional changes by treating a magnesium alloy with an aqueous soln. of specific pH contg. specific ratios of a dichromic acid and sulfate of magnesium and/or aluminum.
CONSTITUTION: Water is added to 20W50g sodium dichromate and 20W50g magnesium sulfate and/or aluminum sulfate to make 1l, and its pH is maintained at 4.2W 5.8. If the magnesium sulfate alone, it is added at 60g/l. This treating liquid 3 is put into an iron cell 2, and a magnesium alloy part 1 having undergone pretreatment is immersed therein; at the same time, the alloy 1 and the cell 2 are connected by a resistance 5 to an ammeter 4. The resistance 5 is so controlled that the part 1 has 0.1W1.5A/dm2 electric current densities per surface area thereof, and the bath temp. is kept at about 45W80°C. Thereby, electric current is flowed between the alloy 1 and the cell 2, and the corrosion preventive treatment for improving corrosion resistance is accomplished.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10912780A JPS5830399B2 (en) | 1980-08-11 | 1980-08-11 | Anticorrosion treatment liquid for magnesium alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10912780A JPS5830399B2 (en) | 1980-08-11 | 1980-08-11 | Anticorrosion treatment liquid for magnesium alloys |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5735695A true JPS5735695A (en) | 1982-02-26 |
JPS5830399B2 JPS5830399B2 (en) | 1983-06-29 |
Family
ID=14502249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10912780A Expired JPS5830399B2 (en) | 1980-08-11 | 1980-08-11 | Anticorrosion treatment liquid for magnesium alloys |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5830399B2 (en) |
-
1980
- 1980-08-11 JP JP10912780A patent/JPS5830399B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5830399B2 (en) | 1983-06-29 |
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