JPS55145197A - Coloring method for anodic oxidation coating of aluminum and its alloy utilized electric current inversion electrolysis - Google Patents

Coloring method for anodic oxidation coating of aluminum and its alloy utilized electric current inversion electrolysis

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Publication number
JPS55145197A
JPS55145197A JP5121879A JP5121879A JPS55145197A JP S55145197 A JPS55145197 A JP S55145197A JP 5121879 A JP5121879 A JP 5121879A JP 5121879 A JP5121879 A JP 5121879A JP S55145197 A JPS55145197 A JP S55145197A
Authority
JP
Japan
Prior art keywords
coating
sulfuric acid
alloy
anodic oxidation
electric current
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
JP5121879A
Other languages
Japanese (ja)
Other versions
JPS582599B2 (en
Inventor
Keigo Okubo
Masaji Toba
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.)
NAGANOKEN
Nagano Prefecture
Original Assignee
NAGANOKEN
Nagano Prefecture
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 NAGANOKEN, Nagano Prefecture filed Critical NAGANOKEN
Priority to JP54051218A priority Critical patent/JPS582599B2/en
Publication of JPS55145197A publication Critical patent/JPS55145197A/en
Publication of JPS582599B2 publication Critical patent/JPS582599B2/en
Expired legal-status Critical Current

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  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

PURPOSE: To color the anodic oxidation coating in various color tone, by dipping Al (alloy) is warm solution of metal salt after carrying out coating chemical treatment of Al (alloy) by the electric current inversion electrolysis carried out the polarity conversion periodically in sulfuric acid or electrolyte containing sulfuric acid, and accumulating S compound in the coating.
CONSTITUTION: Anodic oxidation coating is formed on the Al (alloy) 5 by the electric current inversion electrolysis converting the polarity of the carbon bord 4 periodically, that is, positive current from the power source 6 in sulfuric acid or electrolyte containing sulfuric acid in the electrolytic bath 3. And S compound is accumulated in the coating by the negative current. Next, the above coating is colored by dipping in warm solution containing metal salts of Ni.Co.Pb etc. or sealing treatment is carried out after dipping in the above solution. By the above method, high hardness smooth coating is formed by the chemical treatment at high speed under high temperature. high current density electrolysis and also, coloring of deep color tone is easily obtained by the coating chemical treatment in a short time.
COPYRIGHT: (C)1980,JPO&Japio
JP54051218A 1979-04-24 1979-04-24 Coloring method for anodic oxide films on aluminum and its alloys using current reversal electrolysis Expired JPS582599B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54051218A JPS582599B2 (en) 1979-04-24 1979-04-24 Coloring method for anodic oxide films on aluminum and its alloys using current reversal electrolysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54051218A JPS582599B2 (en) 1979-04-24 1979-04-24 Coloring method for anodic oxide films on aluminum and its alloys using current reversal electrolysis

Publications (2)

Publication Number Publication Date
JPS55145197A true JPS55145197A (en) 1980-11-12
JPS582599B2 JPS582599B2 (en) 1983-01-17

Family

ID=12880776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54051218A Expired JPS582599B2 (en) 1979-04-24 1979-04-24 Coloring method for anodic oxide films on aluminum and its alloys using current reversal electrolysis

Country Status (1)

Country Link
JP (1) JPS582599B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571287A (en) * 1980-12-27 1986-02-18 Nagano Prefecture Electrolytically producing anodic oxidation coat on Al or Al alloy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53131932A (en) * 1977-04-22 1978-11-17 Nagano Prefecture Anode oxidation method of aluminium by current inversion electrolysis and its alloy
JPS53138938A (en) * 1977-05-12 1978-12-04 Riken Keikinzoku Kogyo Kk Method of forming anode oxide film of aluminium or its alloy material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53131932A (en) * 1977-04-22 1978-11-17 Nagano Prefecture Anode oxidation method of aluminium by current inversion electrolysis and its alloy
JPS53138938A (en) * 1977-05-12 1978-12-04 Riken Keikinzoku Kogyo Kk Method of forming anode oxide film of aluminium or its alloy material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4571287A (en) * 1980-12-27 1986-02-18 Nagano Prefecture Electrolytically producing anodic oxidation coat on Al or Al alloy

Also Published As

Publication number Publication date
JPS582599B2 (en) 1983-01-17

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