JPS57177997A - Formation of corrosion preventive film of dark greenish blue color artificially on surface of copper or copper alloy - Google Patents
Formation of corrosion preventive film of dark greenish blue color artificially on surface of copper or copper alloyInfo
- Publication number
- JPS57177997A JPS57177997A JP6145981A JP6145981A JPS57177997A JP S57177997 A JPS57177997 A JP S57177997A JP 6145981 A JP6145981 A JP 6145981A JP 6145981 A JP6145981 A JP 6145981A JP S57177997 A JPS57177997 A JP S57177997A
- Authority
- JP
- Japan
- Prior art keywords
- copper
- blue color
- greenish blue
- film
- corrosion preventive
- 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)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
PURPOSE: To form a corrosion preventive film of a dark greenish blue color of superior weather resistance on the surface of copper type metals by forming a sulfide film on said surface then electrolyzing the same as anode in a specific electrolyte.
CONSTITUTION: After the surface of copper or copper alloy is cleaned, it is treated by using an aq. soln. or paste contg. sulfide such as K2S whereby a black colored film of sulfide is formed thereon. Next, the thickness of the sulfide film is changed by mechanical polishing to form patterns, after which the alloy is electrolyzed as anode in an aq. soln. contg. 1 kind or both of carbonate or bicarbonate such as Na2CO3 and NaHCO3. The corrosion preventive film of a dark greenish blue color having excellent weather resistance and decorative value is easily formed on the surface of the copper type metals.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6145981A JPS6033200B2 (en) | 1981-04-24 | 1981-04-24 | A method of artificially forming a dark green-blue anti-corrosion film on the surface of copper or copper alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6145981A JPS6033200B2 (en) | 1981-04-24 | 1981-04-24 | A method of artificially forming a dark green-blue anti-corrosion film on the surface of copper or copper alloys |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57177997A true JPS57177997A (en) | 1982-11-01 |
JPS6033200B2 JPS6033200B2 (en) | 1985-08-01 |
Family
ID=13171634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6145981A Expired JPS6033200B2 (en) | 1981-04-24 | 1981-04-24 | A method of artificially forming a dark green-blue anti-corrosion film on the surface of copper or copper alloys |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6033200B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4548938A (en) * | 1981-07-15 | 1985-10-22 | Janssen Pharmaceutica N.V. | 5-H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one compounds |
ES2193847A1 (en) * | 2001-07-20 | 2003-11-01 | Consejo Superior Investigacion | Production of maroon to black patinas on copper and bronze consists of heat treatment and dipping in an aqueous solution of potassium sulfide |
WO2005026403A1 (en) * | 2003-09-17 | 2005-03-24 | Luigi Turrini | Method for making a metal decorative effect on the surface of an object |
-
1981
- 1981-04-24 JP JP6145981A patent/JPS6033200B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4548938A (en) * | 1981-07-15 | 1985-10-22 | Janssen Pharmaceutica N.V. | 5-H-1,3,4-thiadiazolo[3,2-a]pyrimidin-5-one compounds |
ES2193847A1 (en) * | 2001-07-20 | 2003-11-01 | Consejo Superior Investigacion | Production of maroon to black patinas on copper and bronze consists of heat treatment and dipping in an aqueous solution of potassium sulfide |
WO2005026403A1 (en) * | 2003-09-17 | 2005-03-24 | Luigi Turrini | Method for making a metal decorative effect on the surface of an object |
Also Published As
Publication number | Publication date |
---|---|
JPS6033200B2 (en) | 1985-08-01 |
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