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 alloy

Info

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
Application number
JP6145981A
Other languages
Japanese (ja)
Other versions
JPS6033200B2 (en
Inventor
Tsutomu Takahashi
Kazuo Toda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Metal Corp
Original Assignee
Mitsubishi Metal Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Metal Corp filed Critical Mitsubishi Metal Corp
Priority to JP6145981A priority Critical patent/JPS6033200B2/en
Publication of JPS57177997A publication Critical patent/JPS57177997A/en
Publication of JPS6033200B2 publication Critical patent/JPS6033200B2/en
Expired legal-status Critical Current

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
JP6145981A 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 Expired JPS6033200B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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