JPS57110694A - Method for coloring of anodized film of aluminum and its alloy by two stage current inversion electrolysis - Google Patents

Method for coloring of anodized film of aluminum and its alloy by two stage current inversion electrolysis

Info

Publication number
JPS57110694A
JPS57110694A JP18499580A JP18499580A JPS57110694A JP S57110694 A JPS57110694 A JP S57110694A JP 18499580 A JP18499580 A JP 18499580A JP 18499580 A JP18499580 A JP 18499580A JP S57110694 A JPS57110694 A JP S57110694A
Authority
JP
Japan
Prior art keywords
film
chemical conversion
alloy
electrolysis
short time
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
JP18499580A
Other languages
Japanese (ja)
Other versions
JPS5836075B2 (en
Inventor
Keigo Okubo
Masaji Toba
Atsuaki Kumagai
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
Chiyoda Corp
Nagano Prefecture
Original Assignee
NAGANOKEN
Chiyoda Corp
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, Chiyoda Corp, Nagano Prefecture filed Critical NAGANOKEN
Priority to JP18499580A priority Critical patent/JPS5836075B2/en
Priority to AU75959/81A priority patent/AU533310B2/en
Priority to GB8130528A priority patent/GB2096644B/en
Publication of JPS57110694A publication Critical patent/JPS57110694A/en
Publication of JPS5836075B2 publication Critical patent/JPS5836075B2/en
Priority to GB838323818A priority patent/GB8323818D0/en
Priority to GB08328359A priority patent/GB2129016B/en
Priority to US06/582,148 priority patent/US4571287A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/12—Anodising more than once, e.g. in different baths
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/14—Producing integrally coloured layers
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

PURPOSE: To allow an anodized film to form color spontaneously to various opaque tones in a short time by performing secondary electrolysis by changing invertion ratios, negative electric current and chemical conversion voltage in the process of an anodic oxidation method for Al-based metals by electric current inversion electrolysis.
CONSTITUTION: Al and Al alloy are subjected to electric current inversion in electrolyte contg. inorg. or org. acids and the like by converting polarities periodically and negative current is flowed periodically; at the same time the chemical conversion of the film is interrupted. In this way, the anodized film of large thickness and hardness is chemically converted at high temps. and high speeds. while the evolution of heat in accordance with the polarization and the delectrolysis is suppressed in this way. Thence, the inversion ratio is increased secondarily, the negative current is increased and the chemical conversion voltage is boosted in a short time to change the fine structure of the film, whereby the colored film is obtained with the simple bath composition, the low chemical conversion voltage and the simple operation. It is also possible to color this to a dark tone with the thin film by utilizing the S compound contained and accumulated in the film and immersing the Al and Al alloy into a metallic salt soln. by the secondary electrolysis of a short time.
COPYRIGHT: (C)1982,JPO&Japio
JP18499580A 1980-12-27 1980-12-27 Coloring method for anodic oxide films on aluminum and its alloys by two-stage current reversal electrolysis Expired JPS5836075B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP18499580A JPS5836075B2 (en) 1980-12-27 1980-12-27 Coloring method for anodic oxide films on aluminum and its alloys by two-stage current reversal electrolysis
AU75959/81A AU533310B2 (en) 1980-12-27 1981-10-01 Chemically producing anodic oxidation coat on al or al alloy
GB8130528A GB2096644B (en) 1980-12-27 1981-10-09 Colour anodizing aluminium or aluminium alloys
GB838323818A GB8323818D0 (en) 1980-12-27 1983-09-06 Anodic oxidation on al alloys
GB08328359A GB2129016B (en) 1980-12-27 1983-10-24 Anodic oxidation on a1 or a1 alloys
US06/582,148 US4571287A (en) 1980-12-27 1984-02-24 Electrolytically producing anodic oxidation coat on Al or Al alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18499580A JPS5836075B2 (en) 1980-12-27 1980-12-27 Coloring method for anodic oxide films on aluminum and its alloys by two-stage current reversal electrolysis

Publications (2)

Publication Number Publication Date
JPS57110694A true JPS57110694A (en) 1982-07-09
JPS5836075B2 JPS5836075B2 (en) 1983-08-06

Family

ID=16162937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18499580A Expired JPS5836075B2 (en) 1980-12-27 1980-12-27 Coloring method for anodic oxide films on aluminum and its alloys by two-stage current reversal electrolysis

Country Status (2)

Country Link
JP (1) JPS5836075B2 (en)
GB (2) GB8323818D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI727560B (en) * 2019-12-20 2021-05-11 周文三 Air compressor having pressure gauge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1301345C (en) * 2004-02-26 2007-02-21 陈刚 Hardencing anode treating process of electronic actuator
CN109778281A (en) * 2019-03-27 2019-05-21 珠海市玛斯特恒新铝合金加工有限公司 Two-part voltage oxide improves the corrosion proof method of aluminium alloy
CN110029378B (en) * 2019-04-15 2020-08-04 广东长盈精密技术有限公司 Gradient color electroplating method and electronic equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI727560B (en) * 2019-12-20 2021-05-11 周文三 Air compressor having pressure gauge

Also Published As

Publication number Publication date
GB8323818D0 (en) 1983-10-05
JPS5836075B2 (en) 1983-08-06
GB8328359D0 (en) 1983-11-23
GB2129016A (en) 1984-05-10
GB2129016B (en) 1985-06-19

Similar Documents

Publication Publication Date Title
JPS56119795A (en) Colored aluminum polyhedral body
JPS56136996A (en) Production of colored aluminum material
US4571287A (en) Electrolytically producing anodic oxidation coat on Al or Al alloy
JPS57110694A (en) Method for coloring of anodized film of aluminum and its alloy by two stage current inversion electrolysis
JPS5798698A (en) Coloring method for aluminum or aluminum alloy
JPS5644795A (en) Anodic oxidation of aluminum
JPS56146895A (en) Aluminum alloy which colors to pure black color
JPS57110695A (en) Method for coloring of anodized film utilizing current inversion electrolysis and aluminum alloy
JPS563695A (en) Treatment of electrolytic coloring of aluminum
JPS56102595A (en) Composition of electrolytic coloring bath of aluminum anodized film
JPS55145197A (en) Coloring method for anodic oxidation coating of aluminum and its alloy utilized electric current inversion electrolysis
CA2029438A1 (en) Process for electrolytically treating aluminium and aluminium alloys
JPS57126993A (en) Coloring anodic oxidation treatment bath and method of aluminum or aluminum alloy
JPS566000A (en) Electrolytic coloring method of aluminum
JPS5524947A (en) Formation of nontransparent anodic oxide film in aluminium-clad material
JPS55131195A (en) Electrolytic coloring method for aluminum
JPS5675595A (en) Anodic oxidized film coloring method of aluminum or aluminum alloy
JPS5554594A (en) Anodic oxidation treating method of magnesium and magnesium alloy
JPS55154599A (en) Plating method for aluminum or its alloy
JPS5651593A (en) Surface treating method of aluminum
JPS55115989A (en) Electrolytic coloring method of aluminum and aluminum alloy
SU456047A1 (en) Method of electrochemical painting of metal and metallized parts
JPS5651594A (en) Coloring method of aluminum or aluminum alloy
Ohkubo et al. Coloring of Anodized Aluminum and Its Alloys by a Two-Step Current-Reversal Electrolysis Method
Okubo et al. Colour Anodizing Aluminium or Aluminium Alloys