JPS55131197A - Electrolytic coloring method for aluminum - Google Patents

Electrolytic coloring method for aluminum

Info

Publication number
JPS55131197A
JPS55131197A JP3776379A JP3776379A JPS55131197A JP S55131197 A JPS55131197 A JP S55131197A JP 3776379 A JP3776379 A JP 3776379A JP 3776379 A JP3776379 A JP 3776379A JP S55131197 A JPS55131197 A JP S55131197A
Authority
JP
Japan
Prior art keywords
alloy
electrolytic
sulfonic acid
anodic oxidation
cathode
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.)
Pending
Application number
JP3776379A
Other languages
Japanese (ja)
Inventor
Toshio Suzuki
Yoshibumi Hasegawa
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.)
Sumitomo Light Metal Industries Ltd
Original Assignee
Sumitomo Light Metal Industries Ltd
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 Sumitomo Light Metal Industries Ltd filed Critical Sumitomo Light Metal Industries Ltd
Priority to JP3776379A priority Critical patent/JPS55131197A/en
Publication of JPS55131197A publication Critical patent/JPS55131197A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To carry out the above mentioned coloration of stable color tone, by alternately carrying out direct current and alternating current electrolytic treatments making Al as cathode, in the bath containing hydroxyalkane (alkene) sulfonic acid and its metal salt, after carrying out anodic oxidation treatment of Al.
CONSTITUTION: Anodic oxidation treatment of Al or Al alloy is carried out in the electrolytic bath, such as sulfuric acid etc. Direct current and alternating current electrolytic treatments are alternately carried out making Al or Al alloy as cathode, dipping Al or Al alloy formed the above anodic oxidation coating, in the electrolytic bath containing hydroxyalkane sulfonic acid or hydroxyalkene sulfonic acid shown in the formula I (R; saturated or unsaturated straight chain or branched chain C1W12 hydrocarbon part, OH and SO3H; chained on the optional carbon of the hydrocarbon) and its metal salts, for example, heavy metal salts of Sn, Ni etc. By this method, Al or Al alloy is able to color in a stable and uniform color tone, even when the electrolytic condition is varied.
COPYRIGHT: (C)1980,JPO&Japio
JP3776379A 1979-03-30 1979-03-30 Electrolytic coloring method for aluminum Pending JPS55131197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3776379A JPS55131197A (en) 1979-03-30 1979-03-30 Electrolytic coloring method for aluminum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3776379A JPS55131197A (en) 1979-03-30 1979-03-30 Electrolytic coloring method for aluminum

Publications (1)

Publication Number Publication Date
JPS55131197A true JPS55131197A (en) 1980-10-11

Family

ID=12506502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3776379A Pending JPS55131197A (en) 1979-03-30 1979-03-30 Electrolytic coloring method for aluminum

Country Status (1)

Country Link
JP (1) JPS55131197A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5650338A (en) * 1991-08-26 1997-07-22 Semiconductor Energy Laboratory Co., Ltd. Method for forming thin film transistor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5650338A (en) * 1991-08-26 1997-07-22 Semiconductor Energy Laboratory Co., Ltd. Method for forming thin film transistor

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