JPS5569294A - Secondary electrolytic coloring method of aluminum and alloy thereof - Google Patents

Secondary electrolytic coloring method of aluminum and alloy thereof

Info

Publication number
JPS5569294A
JPS5569294A JP13392179A JP13392179A JPS5569294A JP S5569294 A JPS5569294 A JP S5569294A JP 13392179 A JP13392179 A JP 13392179A JP 13392179 A JP13392179 A JP 13392179A JP S5569294 A JPS5569294 A JP S5569294A
Authority
JP
Japan
Prior art keywords
alloy
electrolytic bath
colored film
primary treatment
bath
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
JP13392179A
Other languages
Japanese (ja)
Other versions
JPS5641716B2 (en
Inventor
Michiaki Hirochi
Masatoshi Hirai
Takamasa Iwasa
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.)
SHIYOUKOUSHIYA KK
Shokosha KK
Original Assignee
SHIYOUKOUSHIYA KK
Shokosha KK
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 SHIYOUKOUSHIYA KK, Shokosha KK filed Critical SHIYOUKOUSHIYA KK
Priority to JP13392179A priority Critical patent/JPS5569294A/en
Publication of JPS5569294A publication Critical patent/JPS5569294A/en
Publication of JPS5641716B2 publication Critical patent/JPS5641716B2/ja
Granted legal-status Critical Current

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  • Electrochemical Coating By Surface Reaction (AREA)

Abstract

PURPOSE: To form a colored film rich in luster and excelling in appearance in a short time, by performing anodic oxidation of Al (alloy) in an electrolytic bath for primary treatment obtained by mixing H2O2 and polyphosphate in NaOH solution, and performing AC electrolysis in an electrolytic bath for secondary treatment to dissolve metal salt.
CONSTITUTION: Al (alloy) is subjected to anodic oxidation in an electrolytic bath for primary treatment obtained by mixing H2O2 (usually in the range of 1W4vol%) and polyphosphate (such as sodium pyrophosphate) in NaOH solution. This Al (alloy) is then subjected to AC electrolysis in an electrolytic bath for secondary treatment to dissolve metal salt such as sulfates and hydrochlorides of Ni, Su, co. In this method, aging of the electrolytic bath for primary treatment may be retarded, so that the bath can be used for a longer period of time. Besides, the obtained colored film has a uniform luster and is not discolored even if exposed to ultraviolet rays for 200hr. Hence, the colored film may be used in decorative items, electric household appliances, and interior and exterior furnishing meterials of building.
COPYRIGHT: (C)1980,JPO&Japio
JP13392179A 1979-10-16 1979-10-16 Secondary electrolytic coloring method of aluminum and alloy thereof Granted JPS5569294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13392179A JPS5569294A (en) 1979-10-16 1979-10-16 Secondary electrolytic coloring method of aluminum and alloy thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13392179A JPS5569294A (en) 1979-10-16 1979-10-16 Secondary electrolytic coloring method of aluminum and alloy thereof

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP6894976A Division JPS52150751A (en) 1976-06-11 1976-06-11 Secondary electrolytic pigmentation process for aluminum and aluminum alloy

Publications (2)

Publication Number Publication Date
JPS5569294A true JPS5569294A (en) 1980-05-24
JPS5641716B2 JPS5641716B2 (en) 1981-09-30

Family

ID=15116193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13392179A Granted JPS5569294A (en) 1979-10-16 1979-10-16 Secondary electrolytic coloring method of aluminum and alloy thereof

Country Status (1)

Country Link
JP (1) JPS5569294A (en)

Also Published As

Publication number Publication date
JPS5641716B2 (en) 1981-09-30

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