Title:
ELECTROLYTIC PIGMENTATION BATH FOR ALUMINUM OR ITS ALLOY
Document Type and Number:
Japanese Patent JPS5938399
Kind Code:
A
Abstract:
PURPOSE:To provide always a uniform color tone, by using a soln. contg. a metallic salt capable of forming complex ion and a complexing agent as an electrolytic pigmentation bath for Al or an Al alloy. CONSTITUTION:An anodic oxide film is formed on an Al or Al alloy product and colored with a metallic salt by electrolysis in an electrolytic pigmentation bath. The bath contains 10-100g/l inorg. acid salt of Ni, Co, Fe, Cu, Cd, Zn, Sn, Mn or Mo such as sulfate, phosphate or hydrochloride, or org. acid salt of said metal such as citrate, acetate or tartrate, at least 1 kind of compound selected from polyaminopolycarboxylic acids, salts thereof, ammonia and ammonium salts as a complexing agent, and an inorg. salt of an alkali metal or the like for improving electric conductivity. The bath is adjusted to 5-7pH.
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Inventors:
MINEGISHI TOMOHIRO
Application Number:
JP14816182A
Publication Date:
March 02, 1984
Filing Date:
August 25, 1982
Export Citation:
Assignee:
MINEGISHI TOMOHIRO
KIWA KOGYO KK
KIWA KOGYO KK
International Classes:
C25D11/22; (IPC1-7): C25D11/22
Attorney, Agent or Firm:
Aoyama