US3892636A - Method for producing a colored oxide film on an aluminum or aluminum alloy - Google Patents

Method for producing a colored oxide film on an aluminum or aluminum alloy Download PDF

Info

Publication number
US3892636A
US3892636A US366207A US36620773A US3892636A US 3892636 A US3892636 A US 3892636A US 366207 A US366207 A US 366207A US 36620773 A US36620773 A US 36620773A US 3892636 A US3892636 A US 3892636A
Authority
US
United States
Prior art keywords
aluminum
aluminum alloy
oxide film
electrode
electrodes
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.)
Expired - Lifetime
Application number
US366207A
Other languages
English (en)
Inventor
Kazuyoshi Kaneda
Yasushi Suzuki
Kenji Wada
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.)
Riken Light Metal Industry Co Ltd
Original Assignee
Riken Light Metal Industry Co 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
Priority claimed from JP5557472A external-priority patent/JPS548173B2/ja
Priority claimed from JP11286872A external-priority patent/JPS5248587B2/ja
Application filed by Riken Light Metal Industry Co Ltd filed Critical Riken Light Metal Industry Co Ltd
Application granted granted Critical
Publication of US3892636A publication Critical patent/US3892636A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/20—Electrolytic after-treatment
    • C25D11/22—Electrolytic after-treatment for colouring 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
    • C25D11/024—Anodisation under pulsed or modulated current or potential
    • 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

Definitions

  • the present invention relates to a method for producing a colored oxide film of aluminum or aluminum alloy (referred to as aluninous material hereinafter) and particularly a method for easily producing a colored oxide film having an excellent reproducibility of color tone.
  • the direct current processes include the following.
  • An aluminous material to be treated is degreased and washed with water in a conventional manner, for example by degreasing in an aqueous solution of NaOH, washing with water. neutralizing in an aqueous solution of HNO and then washing with water.
  • the thus treated aluminous material is used as either of two electrodes or both electrodes and an elec trolysis treatment is carried out in an electrolytic bath comprising an aqueous solution of a mineral acid or an orgnaic acid or a salt of these acids, to which one or more metal salts are added, at room temperature by means of a direct current, the polarity of which is periodically reversed.
  • a direct current the polarity of which is periodically reversed.
  • the direct negative and positive current are periodically reversed.
  • the reversed period is usually within 5 minutes and the voltage to be applied varies depending upon the kind of the metal salt to be added but is generally not more than V whereby a colored oxide film showing an colormiterent to the above described added metal salt is formed on the aluminous material.
  • Both the anode and cathode are constituted by an aluminous material and both the electrodes are colored simultaneously.
  • the aluminous materials are degreased and washed with water in the usual manner and the thus treated aluminous materials as such are immersed in an electrolytic bath containing a metal salt as the opposite electrodes.
  • a direct current having an periodically reversing polarity is applied between both the aluminous material electrodes at a given frequency.
  • colored oxice films inherent to the above described metal salt are formed on both the aluminous material electrodes.
  • the alumina film on the aluminous material which has been changed from the anode to the cathode is colored by the action of the metal salt, while an alumina film is formed on the aluminous material which is changed from the cathode to the anode, and this alumina film is colored by a metal salt during the next half of the cycle.
  • alumina film and the coloration with a metal salt are repeated alternately, whereby the colored films are formed on both the aluminous material electrodes.
  • both the aluminous material electrodes can be subjected to a coloring oxidation treatment simultaneously, the productivity is improved and further it is merely necessary to effect the degreasing and washing with water of the aluminous material as a pre-treatment and the productivity is further improved from this point.
  • the voltages to be applied, the current densities and the changing times of the positive direct current and the negative direct current are equal.
  • anode and cathode use is made of aluminous materials but on any one of the aluminous materials, a colored oxide film is formed and on the other aluminous material, an oxide film is formed.
  • any one of both the aluminous material electrodes use is made of an aluminous material in which an oxide film has been already formed and this oxide film coated aluminous material constitutes a cathode and an aluminous material, which has been de greased and washed with water, constitutes the anode.
  • a direct current which changes polarity alternately in an electrolytic bath containing a metal salt.
  • the aluminous material previously provided with the oxide film is colored and on the other aluminous material is formed an alumina film.
  • the metal salt which colors the alumina film. is a metal salt which deposites difficultly on the alumina film. the metal may be easily deposited on the oxide film and the coloration can be effected efflciently.
  • an aluminous material after being degreased and washed with water is subjected to a usual anodic oxidation treatment to form an oxide film (Alon the aluminous material.
  • This aluminous material is used as an electrode (for example cathode) and as the opposite electrode use is made of an aluminous material which has been degreased and wadhed with water.
  • a direct current the polarity of which is changed alternately. in an aqueous electrolytic bath consisting of an aqueous solution of a mineral or organic acid or one or more these salts, to which is added a metal salt. at room temperature.
  • an electrolytic treatment By such an electrolytic treatment. a colored oxide film is formed on the aluminous material provided with a previously formed oxide film and an oxide film is formed on the aluminous material. which has been only degreased and washed with water.
  • the colored aluminous material is taken out from the electrolytic bath and a new aluminous material which has been degreased and washed with water. is put in the electrolytic bath and this aluminous material electrode and the aluminous material electrode coated with an alumina layer are subjected to the same electrolysis treatment as mentioned above. whereby the aluminous material coated with an alumina layer is colored.
  • either one of the electrodes must be an aluminous material previously subjected to an anodic oxidation. at the starting stage. However. even if the aluminous material to be used one electrode has not been separately subjected to an anodic oxidation at the starting stage, the above pro' cess (2) may be carried out.
  • aluminous materials which have been degreased and washed with water, are arranged as the opposite electrodes in an electrolytic bath, to which a metal salt has been added at the starting stage. Then, between both the electrodes is applied a direct current, the charge transfer of which is different from that in the usual operation. Namely. in the starting stage. a reversing direct current in which the amount of positive charge transferred is larger than the amount of negative charge. is applied in order that the metal is not depos ited on the aluminous material and that only the alu mina film is formed on the aluminous material. Since the positive charge contributes to form the oxide film, its value must be larger than negative. if the negative charge is too large. there is danger that the metal may be deposited on the oxide film.
  • the anodic oxidation is repeated by using the direct current as described above.
  • a direct current having a larger negative charge and a smaller positive charge is applied. Namely. the voltage. charging time and current density of the positive current are larger than those ofthe negative current.
  • an aluminous ma terial wherein an alumina film has been previously formed and as another electrode, use is made of a carbonaceous material or other substance and a direct current which changes the polarity alternately is applied.
  • An aluminous material which has been already degreased and washed with water. is subjected to a usual anodic oxidation treatment by means of an aqueous solution of sulfuric acid or the like to form a porous oxide film on the surface of the aluminous material.
  • the aluminous material coated with alumina and the carbonaceous material are subjected to the electrolysis treatment under the same treating conditions, such as the electrolytic bath, currents and the like as described in the above described processes l) and (2). whereby a colored oxide film is formed on the surface of the aluminous material.
  • both the electrodes may be constituted by the aluminous materials treated with anodic oxidation.
  • a direct current having a larger positive charge and a smaller negative charge is alternately applied to an electrolytic bath containing a metal salt as in the above described processes l 3) to form alumina film the aluminous material.
  • a direct current having a smaller positive charge and a larger negative charge is alternately applied to the same bath as described above at a given frequency to form colored oxide film on the aluminous material.
  • the methods of the present invention can be carried out as in the above described processes l )(4) and in any case, the oxide film can be colored in an color inherent to the metal salt by passing a direct current which reverses the polarity alternately.
  • a porous oxide film has been previously formed on an aluminius material by an anodic oxidation and a metal oxide aluminous deposited on the oxide film by an alternating current. Accordingly, in the conventional process, an oxide film has been previously formed and then the coloration is made by a metal salt by means of an alternating current.
  • the formation of the oxide film and the coloration owing to a metal salt are alternately or simultaneously effected by means of a direct current which reverses polarity alternately.
  • both the electrodes when the aluminous materials are used as both the electrodes. if the aluminous material is used as positive electrode. the alumi' nous material acts as an anode and an oxide film is formed, while if the aluminous material is used as a negative electrode. a metal ion is adsorbed on the oxide film.
  • both the positive and negative currents which are reversed alternately, are direct current, so, that the reverse period and the voltage to be applied can be established easily and therefore the aluminous material can be colored satisfactorily.
  • the method is effective in the follow ing case.
  • the reason why the reversal period of the direct current is defined as within 5 minutes, is as follows. Even if the positive current is applied for a longer time than the definition, the coloration degree is not improved and this is not advantageous economically and if the negative current is applied for a longer time than the above definition, a redissolution and separation of the oxide film on the aluminous material occurs and the formation of colored oxide film is retarded.
  • FIG. I shows the wave shape of the direct current used in Example 1.
  • FIG. 2 shows the wave shape of the direct current used in Example 4.
  • EXAMPLE 1 Aluminum alloy 1 100 was degreased by immersing in an 8.0% NaOH aqueous solution kept at 60C for 30 seconds and washed with water. The alloy was further immersed in a 7r HNO aqueous solution kept at room temperature for seconds to effect neutralization and washed with water.
  • the thus treated aluminum alloy was used as opposite electrodes.
  • the opposite electrodes were connected alternately to a positive direct current and a negative direct current at an alternating time of 5 seconds for minutes in an aqueous solution containing 12.0% by weight of H 50, and 0.0la% by weight of HAuClr4H- O and kept at room temperature to effect an electrolysis of the aluminum alloy.
  • the voltage of the positive and negative direct currents was kept at 17 V, and the current density thereof was kept at 2 Afdm? As the result, a light reddish purple oxide film was formed on the aluminum alloy.
  • FIG. 1 shows the treating conditions in this Example EXAMPLE 2
  • Aluminum alloy 6063 was degreased by immersing in an 80% NaOH aqueous solution kept at 60C for 3 minutes. and washed with water. Then the alloy was immersed in a 10% HMO; aqueous solution kept at room temperature for 30 seconds to cffedt neutralization and washed with water.
  • the thus treated aluminum alloy was used as opposite clectrodes.
  • the opposite electrodes were con nected alternately to a positive direct current and a negatite direct current at an alternating time of 30 secends for 60 minutes in an aqueous solution containing 15.0% by weight of H and 0.00257! by weight of AgNO and kept at room temperature to effect an electrolysis
  • the voltage of the positive and negative direct currents was kept at 15 V, and the current density thereof was kept at 1.5 A/dm.
  • a uniform yellowish brown oxide film having a thicknes of 7.5 u was formed on the aluminum alloy.
  • EXAMPLE 3 The same aluminum alloy as used in Example 1 was degreased and washed with water in the same manner as described in Example I and used as opposite electrodes.
  • the opposite electrodes were connected alternately to a positive direct current and a negative direct current at an alternating time of 10 seconds for 60 minutes in an aqueous solution containing 5.0% by weight of C H O and 0.5% by weight of Na SeO and kept at room temperature to effect an electrolysis.
  • the voltage of the positive and negative direct currents was kept at 50 V and the current density thereof was kept at 2 A/dm As the result, a uniform orange oxide film having a thickness of 8.0 u was formed on the aluminum alloy.
  • EXAMPLE 4 The same aluminum alloy as used in Example 1 was degreased and washed with water in the same manner as described in Example 1. The thus treated aluminum alloy was used as one electroce and carbon having a surface area of 2 dm was used as another electrode. The aluminum alloy was subjected to an electrolysis in an aqueous soltuion containing 15% by weight of H 80, and 1.0% by weight of SnSO, and kept at room temperature in the following manner. In first stage, the aluminum alloy electrode was connected to a positive DC voltage of 14 V at a current density of l A/dm for 10 seconds and then connected to a negative DC voltage of 12 V at a current density of 1.5 A/dm for 2 seconds, and such steps were repeated for 30 minutes as shown in FIG. 2a.
  • FIG. 2 shows the treating condition at the aluminum alloy electrode.
  • EXAMPLE 5 The same aluminum alloy as used in Example 2, which had been degreased and washed with water in the same manner as described in Example 2, was used as an anode and subjected to a conventional anodic oxidation for 30 minutes in an aqueous soltuion containing 15.0% by weight of H 50 to form a porous oxide film on the aluminum alloy.
  • the thus treated aluminum alloy was used as one electrode, and carbon was used as another electrode, and an electrolysis of the aluminum alloy was effected in an aqueous containing 10% by weight of H 80, and 0.5% by weight of SnSO and kept at room temperature in the following manner.
  • the aluminum alloy electrode was connected to a positive DC voltage of 3 V at a current density of not higher than 0.1 A/dm for 2 seconds and then connected to a negative DC voltage of i5 V at a current density of l A/dm' for seconds. and such steps were repeated for 30 minutes.
  • a light amber colored oxide film was formed on the aluminum alloy after 2 minute treatment.
  • a yellowish brown oxide film was formed after 5 minute treatment, a brown oxide film was formed after 10 minute treatment and a black oxide film was formed after 30 minute treatment.
  • EXAMPLE 6 The same aluminum alloy as used in Example l, which was degreased and washed with water in the same manner as described in Example I. was used as an anode. and subjected to an anodic oxidation in the same manner as described in Example 5 to form a porous oxide film on the aluminum alloy.
  • the thus treated aluminum alloy was used as one electrode. and carbon was used as another electrode. and an electrolysis of the aluminum alloy was cffected in an aqueous solution containing 10.0% by weight of H 50. and 1.0% by weight of CuSO; and kept at room temperature in the following manner.
  • the applied voltage was 5 V and the current density was 0.2 A/dm and in the negative direct current.
  • the applied voltage was V and the current density was 2.5 A/dm
  • the alternating time was 2 seconds and the electrolysis time was 15 minutes. A light reddish purple oxide film was formed on the aluminum alloy after 3 minutes treatment. and a brown oxide film was formed after 15 minute treatment.
  • EXAMPLE 7 The same aluminum alloy as used in Example l was degreased and washed with water in the same manner as described in Example l and the thus treated alloy was used as opposite electrodes. 10% by weight of H 50 0.005% by weight of HAuCl '4H- O and 0.01%
  • EXAMPLE 8 Aluminum alloy 1100 or 6063 was degreased and washed with water in a conventional manner. The alloy was used as an anode and subjected to an anodic oxidation for 30 minutes in an aqueous solution of a sulfuric acid to form alumina film having a thickness of about 7 p. on the alloy. Then,the aluminum alloy on which the oxide film had been formed as described above was used as one electrode. and the aluminum alloy which had been only degreased and washed with water was used as another electrode, and an electrolysis treatment was effected under the conditions as shown in the following Table 1. As the result, the aluminum alloy having the previously formed oxide film was colored as shown in Table 1.
  • An oxide film was formed on the aluminum alloy which had been only degreased and washed with waterv
  • the colored aluminum alloy was taken out from the electrolytic bath. and instead of this aluminum alloy. an aluminum alloy which had been degreased and washed with water. was put in the same electrolytic bath as an opposite electrode to the aluminum alloy coated with the oxide film and the electrolytic treatment was made in the same manner as described in the following Table l. Then, the same colored oxide film as that of the above taken out aluminum alloy was formed on the aluminum alloy on which the oxide film had already been formed. and an oxide film was formed on the newly opposed aluminum alloy which had been only degreased and washed with water.
  • a two stage electrolysis treatment was effected in one electrolytic bath by applying a positive direct current and a negative direct current alternately to the opposite electrodes under the following conditions. As the result. a colored oxide film was formed on one aluminum alloy electrode, and an oxide film was formed on another aluminum alloy electrode at the same time.
  • the oxide film formed on one of the aluminum alloys used as the opposite electrodes was colored yellowish brown while the oxide film formed on another aluminum alloy in the first stage electrolysis treatment maintained its original thickness.
  • Example 9 the following treatment was able to be effected in this Example 9 similarly to Example 8.
  • an electrolytic treatment was effected in the same electrolytic bath under the same condition as described above by newly opposing the aluminum alloy which had been only degreased and washed with water to the aluminum alloy remaining in the bath, on which the oxide film had been already formed in the above procedure. and oxide film was formed on the newly opposed aluminum alloy. and on another aluminum alloy the signal film already formed was colored yellowish brown.
  • aluminum alloy was used as opposite electrodes in one electrolytic bath, whereby formation ofoxide film on the aluminum alloy and coloration of the oxide film were effected alternately.
  • the present invention has the following merits.
  • the thickness of the oxide film layer and the depth of color can be varied corresponding to the request of users by combining various values of alternating time, voltage and current density of positive and negative currents alternately applied to aluminous material.
  • Aluminous materials to be electrolytically treated can be used in one electrode or both electrodes. Particularly, when aluminous materials are used in both elec trodes, colored oxide films can be formed inexpensively with high productivity.
  • Metal salts can be added to the base solution alone or in admixture. Accordingly, complicated color tone which has never been obtained in the conventional method can be obtained. This merit as well as that described in the above item 2 is peculiar to the present in vention.
  • the metal can be deposited in a high efficiency.
  • Electrolysis of aluminous material can be effected at both electrodes, whereby formation of oxide film on the aluminous material and coloration of the oxide film can be effected alternately in one electrolytic bath.
  • Stable colored oxide film can be obtained with great reproducibility. Particularly, even when a metal salt which is difficultly deposited on the oxide film is used, a stable colored oxide film can be obtained. Moreover, the color tone of the color oxide film can be more complicated.
  • Method for producing a colored oxide film on aluminum or an aluminum alloy which comprises arranging a degreased and water-washed aluminum or aluminum alloy, or a material other than aluminum, which can be used as an electrode, as one electrode and a degreased and waterwashed aluminum or aluminum alloy or an alumina film coated aluminum or aluminum alloy as another electrode in an electrolytic bath containing a metal salt and passing between said electrodes a periodically reversing direct current, said current re versing direction at an interval of from 1 second to 5 minutes, the positive charge and the negative charge of said direct current being adjusted by the reversing time, voltage and current density so as to form the colored film on the alumina coated aluminum or aluminum alloy or to form alumina film on the degreased and water-washed aluminum or aluminum alloy.
  • a method for producing colored oxide films on aluminum or an aluminum alloy which comprises arranging a pair of aluminum or aluminum alloy electrodes in an electrolytic hath containing a metal salt and passing between said electrodes a periodically reversing direct current. said current reversing direction at intervals of from I second to 5 minutes at not more than V.
  • a method for producing a colored oxide film on aluminum or an aluminum alloy and alumina film on another aluminum or aluminum alloy which comprises arranging an aluminum or aluminum alloy coated with alumina film as one electrode and an aluminum or aluminum alloy electrode which has been degreased and washed with water as another electrode in an electrolytic bath containing a metal salt and passing between said electrodes such a periodically reversing direct current that a value of negative charge is larger than that of positive charge to form the colored film on the laumina coated aluminum or aluminum alloy and the alumina film on the degreased and water-washed aluminum or aluminum alloy.
  • a method for producing a colored oxide film on aluminum or an aluminum alloy which comprises arranging aluminum or an aluminum alloy coated with alumina film as one electrode and a material other than aluminum as another electrode in an electrolytic bath containing a metal salt and passing between said electrodes such a periodically reversing direct current that the value of negative charge is larger than that of positive charge, to form the colored film on the alumina coated aluminum or aluminum alloy.
  • a method for producing a colored oxide film on aluminum or aluminum alloy which comprises arranging a degreased and water-washed aluminum or aluminum alloy as one electrode and a material other than aluminum as another electrode in an electrolytic bath containing a metal salt and passing between said elec trodes such a periodically reversing direct current that the value of positive charge is larger than that of negative charge, to form alumina film on the aluminum or aluminum alloy electrode and then passing between the thus treated electrodes such a periodically reversing direct current that the value of negative charge is larger than that of positive charge, to form the colored oxide film on the aluminum or aluminum or aluminum alloy electrode.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
US366207A 1972-06-06 1973-06-01 Method for producing a colored oxide film on an aluminum or aluminum alloy Expired - Lifetime US3892636A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5557472A JPS548173B2 (enrdf_load_stackoverflow) 1972-06-06 1972-06-06
JP11286872A JPS5248587B2 (enrdf_load_stackoverflow) 1972-11-13 1972-11-13

Publications (1)

Publication Number Publication Date
US3892636A true US3892636A (en) 1975-07-01

Family

ID=26396463

Family Applications (1)

Application Number Title Priority Date Filing Date
US366207A Expired - Lifetime US3892636A (en) 1972-06-06 1973-06-01 Method for producing a colored oxide film on an aluminum or aluminum alloy

Country Status (6)

Country Link
US (1) US3892636A (enrdf_load_stackoverflow)
AU (1) AU465572B2 (enrdf_load_stackoverflow)
CA (1) CA1059059A (enrdf_load_stackoverflow)
CH (1) CH581705A5 (enrdf_load_stackoverflow)
DE (1) DE2328538A1 (enrdf_load_stackoverflow)
GB (1) GB1438383A (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977948A (en) * 1974-02-20 1976-08-31 Iongraf, S.A. Process for coloring, by electrolysis, an anodized aluminum or aluminum alloy piece
FR2322218A1 (fr) * 1975-08-27 1977-03-25 Riken Keikinzoku Kogyo Kk Procede de formation d'une pellicule d'oxyde anodique coloree sur une matiere constituee par un alliage a base d'aluminium
US4021315A (en) * 1974-08-29 1977-05-03 Sumitomo Chemical Company, Limited Process for electrolytic coloring of the anodic oxide film on aluminum or aluminum base alloys
US4087341A (en) * 1975-11-06 1978-05-02 Nippon Light Metal Research Laboratory Ltd. Process for electrograining aluminum substrates for lithographic printing
US4147598A (en) * 1975-08-27 1979-04-03 Riken Keikinzoku Kogyo Kabushiki Kaisha Method for producing colored anodic oxide films on aluminum based alloy materials
FR2480797A1 (fr) * 1980-04-22 1981-10-23 Empresa Nacional Aluminio Procede pour colorer electrolytiquement l'aluminium et ses alliages
DE3127330A1 (de) * 1981-07-10 1983-01-27 United Chemi-Con, Inc., 60018 Rosemont, Ill. Verfahren zum elektrolytischen aetzen von aluminium
US4478689A (en) * 1981-07-31 1984-10-23 The Boeing Company Automated alternating polarity direct current pulse electrolytic processing of metals
US4517059A (en) * 1981-07-31 1985-05-14 The Boeing Company Automated alternating polarity direct current pulse electrolytic processing of metals
US4571287A (en) * 1980-12-27 1986-02-18 Nagano Prefecture Electrolytically producing anodic oxidation coat on Al or Al alloy
US4632735A (en) * 1979-07-04 1986-12-30 Empresa Nacional Del Aluminio, S.A. Process for the electrolytic coloring of aluminum or aluminum alloys
US4666567A (en) * 1981-07-31 1987-05-19 The Boeing Company Automated alternating polarity pulse electrolytic processing of electrically conductive substances
GB2343681A (en) * 1998-11-16 2000-05-17 Agfa Gevaert Nv Lithographic printing plate support
EP1207220B1 (en) * 2000-10-25 2008-01-16 GHA Corporation Method for surface treatment of aluminum or aluminum alloy
WO2008061555A1 (en) 2006-11-23 2008-05-29 Anox B.V. Process for providing aluminium cookware with a copper coating
US20090218234A1 (en) * 2008-02-28 2009-09-03 Shrisudersan Jayaraman Methods Of Making Titania Nanostructures
US20100243457A1 (en) * 2009-03-31 2010-09-30 Masahiro Fujita Anodic oxide coating and anodizing oxidation method
WO2017013607A1 (es) * 2015-07-21 2017-01-26 Consejo Nacional De Investigaciones Científicas Y Técnicas (Conicet) Método de coloración estructural de aluminio anodizado por formación de cristales fotónicos mediante pulsos de corriente

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852038B2 (ja) * 1980-03-26 1983-11-19 株式会社 日本軽金属総合研究所 着色アルミニウム材の製造法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930741A (en) * 1960-03-29 Electrolytic capacitors
US3382160A (en) * 1960-03-31 1968-05-07 Asada Tahei Process for inorganically coloring aluminum
US3634208A (en) * 1968-09-26 1972-01-11 Aiden Kk Coloring method of aluminum anodic oxide coating film
US3639221A (en) * 1969-12-22 1972-02-01 Kaiser Aluminium Chem Corp Process for integral color anodizing
US3654100A (en) * 1969-05-31 1972-04-04 Riken Almite Industry Co Ltd Process of forming colored anode oxidized film on aluminummaterial
US3664932A (en) * 1968-12-06 1972-05-23 Cegedur Gp Objects of aluminum and alloys of aluminum having colored coatings and process
US3699856A (en) * 1970-04-01 1972-10-24 Whittaker Corp Movement monitoring apparatus
US3717555A (en) * 1970-11-27 1973-02-20 Fentron Ind Inc Method of producing an electrolytic coating on aluminum and the product thereof
US3751350A (en) * 1972-03-03 1973-08-07 Aiden Kk Process for coloring an aluminum anodic oxide film
US3761362A (en) * 1970-03-18 1973-09-25 Sumitomo Chemical Co Coloring an oxidized coating on aluminum and its alloys
US3773631A (en) * 1970-10-16 1973-11-20 Blasberg Gmbh & Co Kg Friedr Aqueous electrolytic bath for coloring anodic oxide layers on aluminum and aluminum alloy substrates and process for coloring said substrates

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2930741A (en) * 1960-03-29 Electrolytic capacitors
US3382160A (en) * 1960-03-31 1968-05-07 Asada Tahei Process for inorganically coloring aluminum
US3634208A (en) * 1968-09-26 1972-01-11 Aiden Kk Coloring method of aluminum anodic oxide coating film
US3664932A (en) * 1968-12-06 1972-05-23 Cegedur Gp Objects of aluminum and alloys of aluminum having colored coatings and process
US3654100A (en) * 1969-05-31 1972-04-04 Riken Almite Industry Co Ltd Process of forming colored anode oxidized film on aluminummaterial
US3639221A (en) * 1969-12-22 1972-02-01 Kaiser Aluminium Chem Corp Process for integral color anodizing
US3761362A (en) * 1970-03-18 1973-09-25 Sumitomo Chemical Co Coloring an oxidized coating on aluminum and its alloys
US3699856A (en) * 1970-04-01 1972-10-24 Whittaker Corp Movement monitoring apparatus
US3773631A (en) * 1970-10-16 1973-11-20 Blasberg Gmbh & Co Kg Friedr Aqueous electrolytic bath for coloring anodic oxide layers on aluminum and aluminum alloy substrates and process for coloring said substrates
US3717555A (en) * 1970-11-27 1973-02-20 Fentron Ind Inc Method of producing an electrolytic coating on aluminum and the product thereof
US3751350A (en) * 1972-03-03 1973-08-07 Aiden Kk Process for coloring an aluminum anodic oxide film

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977948A (en) * 1974-02-20 1976-08-31 Iongraf, S.A. Process for coloring, by electrolysis, an anodized aluminum or aluminum alloy piece
US4021315A (en) * 1974-08-29 1977-05-03 Sumitomo Chemical Company, Limited Process for electrolytic coloring of the anodic oxide film on aluminum or aluminum base alloys
FR2322218A1 (fr) * 1975-08-27 1977-03-25 Riken Keikinzoku Kogyo Kk Procede de formation d'une pellicule d'oxyde anodique coloree sur une matiere constituee par un alliage a base d'aluminium
US4147598A (en) * 1975-08-27 1979-04-03 Riken Keikinzoku Kogyo Kabushiki Kaisha Method for producing colored anodic oxide films on aluminum based alloy materials
US4087341A (en) * 1975-11-06 1978-05-02 Nippon Light Metal Research Laboratory Ltd. Process for electrograining aluminum substrates for lithographic printing
US4632735A (en) * 1979-07-04 1986-12-30 Empresa Nacional Del Aluminio, S.A. Process for the electrolytic coloring of aluminum or aluminum alloys
FR2480797A1 (fr) * 1980-04-22 1981-10-23 Empresa Nacional Aluminio Procede pour colorer electrolytiquement l'aluminium et ses alliages
US4430168A (en) 1980-04-22 1984-02-07 Empresa Nacional Del Aluminio, S.A. Process for electrolytically coloring aluminium and the alloys thereof
US4571287A (en) * 1980-12-27 1986-02-18 Nagano Prefecture Electrolytically producing anodic oxidation coat on Al or Al alloy
DE3127330A1 (de) * 1981-07-10 1983-01-27 United Chemi-Con, Inc., 60018 Rosemont, Ill. Verfahren zum elektrolytischen aetzen von aluminium
US4517059A (en) * 1981-07-31 1985-05-14 The Boeing Company Automated alternating polarity direct current pulse electrolytic processing of metals
US4478689A (en) * 1981-07-31 1984-10-23 The Boeing Company Automated alternating polarity direct current pulse electrolytic processing of metals
US4666567A (en) * 1981-07-31 1987-05-19 The Boeing Company Automated alternating polarity pulse electrolytic processing of electrically conductive substances
GB2343681A (en) * 1998-11-16 2000-05-17 Agfa Gevaert Nv Lithographic printing plate support
EP1002644A3 (en) * 1998-11-16 2004-01-14 Agfa-Gevaert Production of support for lithographic printing plate.
EP1207220B1 (en) * 2000-10-25 2008-01-16 GHA Corporation Method for surface treatment of aluminum or aluminum alloy
WO2008061555A1 (en) 2006-11-23 2008-05-29 Anox B.V. Process for providing aluminium cookware with a copper coating
US20100143622A1 (en) * 2006-11-23 2010-06-10 Anox B.V. Process for providing aluminium cookware with a copper coating
US20090218234A1 (en) * 2008-02-28 2009-09-03 Shrisudersan Jayaraman Methods Of Making Titania Nanostructures
US8101059B2 (en) * 2008-02-28 2012-01-24 Corning Incorporated Methods of making titania nanostructures
US20100243457A1 (en) * 2009-03-31 2010-09-30 Masahiro Fujita Anodic oxide coating and anodizing oxidation method
WO2017013607A1 (es) * 2015-07-21 2017-01-26 Consejo Nacional De Investigaciones Científicas Y Técnicas (Conicet) Método de coloración estructural de aluminio anodizado por formación de cristales fotónicos mediante pulsos de corriente

Also Published As

Publication number Publication date
CH581705A5 (enrdf_load_stackoverflow) 1976-11-15
GB1438383A (en) 1976-06-03
AU5641373A (en) 1974-12-05
DE2328538A1 (de) 1973-12-20
CA1059059A (en) 1979-07-24
AU465572B2 (en) 1975-10-02

Similar Documents

Publication Publication Date Title
US3892636A (en) Method for producing a colored oxide film on an aluminum or aluminum alloy
CA1079680A (en) Continuous electrolytical treatment of aluminum or its alloys
US4159231A (en) Method of producing a lead dioxide coated cathode
JPS56136996A (en) Production of colored aluminum material
US3454376A (en) Metal composite and method of making same
US3554881A (en) Electrochemical process for the surface treatment of titanium,alloys thereof and other analogous metals
US3634208A (en) Coloring method of aluminum anodic oxide coating film
US4226680A (en) Process for electrolytic coloration of anodized aluminium
US3661729A (en) Process for coloring anodic coatings on aluminum and aluminum alloys with metal salts
US3989605A (en) Method for continuous electrolytic coloring of aluminum articles
KR860001286B1 (ko) 알루미늄 표면에 착색 주름무늬를 형성하는 방법
JPS58177494A (ja) アルミニウム被覆部品の陽極酸化浴および陽極酸化方法
US3850701A (en) Anode coated with magnetite and the manufacture thereof
US3795590A (en) Process for coloring aluminum and alloys of aluminum having an anodized surface
US4002549A (en) Apparatus and method for continuous electrolytic coloring of aluminum articles
US3664932A (en) Objects of aluminum and alloys of aluminum having colored coatings and process
US3788956A (en) Electrolytic coloring of anodized aluminum
US3751350A (en) Process for coloring an aluminum anodic oxide film
CH622466A5 (en) Process for producing flat-bed printing plate carriers made of aluminium
CA1100087A (en) Process and apparatus for electrolytic colouration of anodised aluminium
JP2939380B2 (ja) 銅線に黒色酸化皮膜を形成する方法
RU2046155C1 (ru) Способ нанесения покрытий из железа и его сплавов
JPS61110797A (ja) アルミニウム又はアルミニウム合金の表面処理方法
US3843496A (en) Method for forming a colored oxide coating on the surfaces of aluminum or aluminum alloy materials
CA1039227A (en) Anode coated with magnetite and the manufacture thereof