US3787295A - Method of electrolytic coloring of oxide layers on aluminum and aluminum base alloys - Google Patents
Method of electrolytic coloring of oxide layers on aluminum and aluminum base alloys Download PDFInfo
- Publication number
- US3787295A US3787295A US00130484A US3787295DA US3787295A US 3787295 A US3787295 A US 3787295A US 00130484 A US00130484 A US 00130484A US 3787295D A US3787295D A US 3787295DA US 3787295 A US3787295 A US 3787295A
- Authority
- US
- United States
- Prior art keywords
- colouring
- electrolyte
- acid
- acids
- colour
- 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
Links
- 238000004040 coloring Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 title claims description 10
- 239000000956 alloy Substances 0.000 title claims description 10
- 239000003792 electrolyte Substances 0.000 claims abstract description 60
- 150000003839 salts Chemical class 0.000 claims abstract description 56
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 239000003086 colorant Substances 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims description 39
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 34
- 150000007513 acids Chemical class 0.000 claims description 25
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 20
- 150000001450 anions Chemical class 0.000 claims description 13
- 239000004411 aluminium Substances 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 8
- 150000002739 metals Chemical class 0.000 claims description 7
- YCPXWRQRBFJBPZ-UHFFFAOYSA-N 5-sulfosalicylic acid Chemical compound OC(=O)C1=CC(S(O)(=O)=O)=CC=C1O YCPXWRQRBFJBPZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid group Chemical group C(C=1C(C(=O)O)=CC=CC1)(=O)O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001432 tin ion Inorganic materials 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims 3
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims 3
- 239000010949 copper Substances 0.000 abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005868 electrolysis reaction Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 2
- 238000002048 anodisation reaction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 14
- 235000015165 citric acid Nutrition 0.000 description 9
- 239000000203 mixture Substances 0.000 description 6
- 150000007524 organic acids Chemical class 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- NJDNXYGOVLYJHP-UHFFFAOYSA-L disodium;2-(3-oxido-6-oxoxanthen-9-yl)benzoate Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=CC=C1C1=C2C=CC(=O)C=C2OC2=CC([O-])=CC=C21 NJDNXYGOVLYJHP-UHFFFAOYSA-L 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 150000001455 metallic ions Chemical class 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical group 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 150000001860 citric acid derivatives Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 150000003892 tartrate salts Chemical class 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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
Definitions
- ABSTRACT Method for electrolytic coloring of oxide layers produced by anodisation on aluminum and aluminum alloys consisting in using one coloring electrolyte which contains at least two metal salts of which each one renders different colors to the others, for example copper and tin salts, the different color sequences being obtained by adjusting the electrolysis AC-current voltage adequately.
- the counter electrode may be of the same metal that is dissolved in form of a salt in the electrolyte.
- salts of the following elements Fe, Co, Ni, Mn, Cr, Bi, As, Sb, Sn, Ag, Cu, Au, Cd, Mo, Ti, Ca, Mg, V, Pb and Zn were accordingly proposed as components of the colouring electrolytes, the various elements and groups of elements as, for example, 80,", N Cl, oxyacids such as from Te, B, Cr and P and organic acids and acid anions such as acetates, tartrates, oxalates and citrates being suggested as anionproducing components of such electroytes.
- NH amino and imino groups are also known as additional cationforming constituents of such electrolytes.
- Metals, metal hydroxides, metal oxides and metal salts have previously been mentioned as effective colouring substances which penetrate the oxide layers under these conditions.
- a typical colour is determined and produced by means of the bath composition and especially by choosing the specific colouring metal salt, the depth of colour being influenced by electrical conditions (voltage/current intensity) and/or the time of exposure to these electrical parameters of the piece to be coloured.
- the present invention concerns a process for the colouring of anodised, protective layers on aluminium and its alloys in a variety of colours by means of an electrolytic treatment of the protective layer with alternating current, using counter electrodes in acidiferous colouring metal salt electrolytes in which there is used a colouring electrolyte containing at least two colouring metal salts, each salt establishing its own variety of colours and that the said variety of colours are established during the said electrolytic treatment in one and the same colouring electrolyte by means of differing heights in electrical voltage.
- the colour to be produced in the anodised layer is selectable from two colour scales obtainable in one and the same colour electrolyte containing at least two colouring metal salts by adjusting the electrical current/voltage conditions and duration of treatment, whereby changing these conditions leads to the production of the other colour scale.
- the conventional colouring electrolytes comprising Ni or C0 salts, or the Sn salts, can only render one colour sequence.
- a successfully operating electrolyte comprising a combination of two colour metal salts is obtained if two colouring metal salts are selected whereby each renders its own individual colour and when those conventional parameters of anion kinds and pH values (easily discoverable by routine methods) are applied by which each of the two said metal salts of the colouring electrolyte can produce its own colouring effects in anodised layers.
- the latter condition is quite easily accomplished provided that each of the two metal salts is individually colour-electrolytic effective in equal or similar pH ranges.
- such suitable parameters can also be determined and applied by selecting and adding suitable anion-producing means or coloured complex compound materials or other means including buffer substances which all said means result in a modification in the composition of the bath thereby making it suitable for the formation of two different coloured pigments.
- the one kind of metal ion and also its degree of valency is essentially responsible for one colour scale, the other metal ion type for another, similarly obtainable, colour scale. Consequently concentrations of kinds of metallic ions have to be selected by experiment, according to the aim to be achieved, since any excessively low concentration or activity of one metallic ion kind makes the production of two different colour scales according to the invention by means of one and the same colour electrolyte impossible.
- the time program for applying the selected voltage steps, the duration as such, and the final voltage value all influence the colours of the two different colour scales produced according to the invention and can easily be determined for the present purposes by tests.
- the length of treatment time influences the depth of colour although it noticeably less influences the kind of obtainable colour scale, similarly to the known methods for procuring only one colour sequence.
- the concentration of further additions determines the appearance of both colour scales.
- the expert may select, for the method according to the invention, the most practicable material for the counter electrode as for example graphite, aluminium or metal carbides or for example a counter electrode of a metal which represents, as a composition, part of the colouring electrolyte.
- the suitable adjustment of pl-l value and temperature of the colouring electrolyte will also be selected by means of tests or by theoretical calculations for each specific combination of metal salts which will render the desired two colour sequences.
- anodised layers produced by any conventional methods may be coloured according to the invention process. Excellent results were found for example on anodised layers produced in baths which contain, as main component, acids of the sulfuric, chromic and sulfamic group.
- a preferred embodiment of the method according to the invention rendering two characteristic colour scales was found when a colouring electrolyte containing at least two kinds of differently colouring ions of the metals in the Cu, Ag, Cd, Mn. Sn, Ni, Co and Mo group and anion-forming acids or acid radicals containing one acid or one salt of the citric, tartaric, maleic, succinic, fumaric, adipic, acetic, lactic, malonic, phthalic, sulfuric, selenic, phosphoric, fluoboric, formic, sulfamic, sulfosalicylic, sulfanilic and phenosulfonic acids group.
- the sulfuric acid may be totally or partially replaced by other acids, for example, by tartaric, oxalic, succinic, phthalic, sulfamic, sulfosalicylic, citric acids and otherst
- colouring electrolytes are used which, as anion-producing acids or acid radicals, contain at least two different acids or their salts from the group of acids specified in the previous paragraph.
- Another, especiallyadvantageous embodiment of the present invention consists of utilizing a colouring electrolyte containing at least copper and tin ions, and as anion-producing acids at least one acid or one salt of the citric, tartaric, maleic, succinic, fumaric, adipic, acetic, lactic, malonic, phthalic acids group (1), and at least one additional acid from the sulfuric, selenic, phosphoric, fluoboric, formic, sulfamic, sulfosalycilic, sulfanilic, phenolsulfonic acids group (2).
- a colouring electrolyte may contain for example:
- the colouring electrolyte contains the following concentrations: Preferably:
- the following organic acids under observance of all other necessary requirements, render no' colouring or only one colour sequence: hydrofluoric acid, nitric acid, chromic acid.
- the colouring electrolyte contains:
- said colour- .ing electrolyte contains at least two kinds of differently colouring ions of the metals in the Cu, Ag, Cd, Mn, Sn, Ni, Co and Mo group and as anion-producing acids at least one acid or one salt of the citric, tartaric, maleic, succinic fumaric, adipic, acetic, lactic,malonic,phthalic, sulfuric, selenic, phosphoric, fluoboric, formic, sulfamic, sulfosalicylic, phenolsulfonic acids group.
- the said colouring electrolyte contains at least Cu ions and tin ions, and as anion-producing acids at least one acid or one salt of the acids of the citric, tartaric, maleic, succinic, fumaric, adipic, acetic, lactic, malonic, phthalic acids group and at least one further acid or salt of an acid of the sulfuric, selenic, phosphoric, fluoboric, formic, su'lfamic, sulfo-salicylic, sulfanic, phenosulfonic acids group.
- a colouring louring electrolyte containing: electrolyte is used containing 0.5 up to 100 g/l tin-ll-sulfate 13 up to 17 g/l tin-ll-sulfate 0.5 up to 70 g/l CuSO 5 H 0 5 up to g/l CuSO; 5 H O 0.5 up to 100 g/l citric acid I 8 up to l2 g/l citric acid 0.5 up to 100 g/l sulfuric acid cone. 8 up to 12 g/l sulfuric acid. 6.
- electrolyte is used containing: electrolyte is used containing 0.5 up to 100 g/l tin-ll-sulfate 13 up to 17 g/l tin-ll-sulfate 0.5 up to 70 g/l CuSO 5 H 0 5 up to g/l CuSO; 5 H O 0.5 up to 100 g/l citric acid I 8 up to l2 g/l citric acid 0.5 up to 100
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
- Electrochemical Coating By Surface Reaction (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH486770A CH535835A (de) | 1970-04-02 | 1970-04-02 | Verfahren zur elektrolytischen Einfärbung von Oxidschichten auf Aluminium und seinen Legierungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3787295A true US3787295A (en) | 1974-01-22 |
Family
ID=4283933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00130484A Expired - Lifetime US3787295A (en) | 1970-04-02 | 1971-04-01 | Method of electrolytic coloring of oxide layers on aluminum and aluminum base alloys |
Country Status (12)
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3909367A (en) * | 1973-02-23 | 1975-09-30 | Pechiney Aluminium | Method for creating a polychrome motif on an object made of aluminum or aluminum alloy |
| US3915813A (en) * | 1972-11-21 | 1975-10-28 | Showa Aluminium Co Ltd | Method for electrolytically coloring aluminum articles |
| US3963591A (en) * | 1971-06-17 | 1976-06-15 | Swiss Aluminium Ltd. | Method of coloring of anodized aluminum and aluminum alloys by electrolytic treatment in the metal salt solutions |
| US3977948A (en) * | 1974-02-20 | 1976-08-31 | Iongraf, S.A. | Process for coloring, by electrolysis, an anodized aluminum or aluminum alloy piece |
| US4014758A (en) * | 1974-04-23 | 1977-03-29 | Pilot Man-Nen-Hitsu Kabushiki Kaisha | Continuous electrolytical treatment of aluminum or its alloys |
| US4043880A (en) * | 1975-07-24 | 1977-08-23 | Sumitomo Aluminum Smelting Co., Ltd. | Method for producing green-colored anodic oxide film on aluminum or aluminum base alloy articles |
| US4230539A (en) * | 1979-07-09 | 1980-10-28 | Fujikura Cable Works, Ltd. | Method for surface treatment of anodic oxide film |
| US4251330A (en) * | 1978-01-17 | 1981-02-17 | Alcan Research And Development Limited | Electrolytic coloring of anodized aluminium by means of optical interference effects |
| US4310586A (en) * | 1978-01-17 | 1982-01-12 | Alcan Research And Development Limited | Aluminium articles having anodic oxide coatings and methods of coloring them by means of optical interference effects |
| US4430169A (en) | 1982-03-04 | 1984-02-07 | Woods Jack L | Method of producing green coatings on aluminum and aluminum alloys |
| US5587063A (en) * | 1992-12-24 | 1996-12-24 | Henkel Kommanditgesellschaft Auf Aktien | Method for electrolytic coloring of aluminum surfaces using alternating current |
| US5674371A (en) * | 1989-11-08 | 1997-10-07 | Clariant Finance (Bvi) Limited | Process for electrolytically treating aluminum and compositions therefor |
| US20090220806A1 (en) * | 2005-10-27 | 2009-09-03 | Clariant International Ltd. | Method for Improving the Corrosion Resistance and Lightfastness of Painted Aluminum Oxide Layers |
| ITMO20100144A1 (it) * | 2010-05-12 | 2011-11-13 | Giuseppe Librizzi | Lega di alluminio |
| US20130153427A1 (en) * | 2011-12-20 | 2013-06-20 | Apple Inc. | Metal Surface and Process for Treating a Metal Surface |
| EP3553208A1 (de) * | 2018-04-09 | 2019-10-16 | DURA Operating, LLC | Verfahren zum herstellen eines aluminiumbauteils mit einer farbigen oberfläche |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS529644A (en) * | 1975-07-15 | 1977-01-25 | Nippon Light Metal Co | Process for coloring aluminum or its alloy |
| JPS5228436A (en) * | 1975-08-29 | 1977-03-03 | Shokosha Kk | Dyeing process for aluminum and its alloy |
| JPS5245545A (en) * | 1975-08-29 | 1977-04-11 | Shokosha Kk | Dyeing process for aluminum and its alloy |
| ES8103205A1 (es) * | 1980-04-22 | 1981-02-16 | Empresa Nacional Aluminio | Proceso para colorear electroliticamente el aluminio y sus aleaciones |
| EP3421646A1 (en) | 2017-06-29 | 2019-01-02 | EMPA Eidgenössische Materialprüfungs- und Forschungsanstalt | Colouring method of aluminium alloy member |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA662063A (en) * | 1963-04-30 | Asada Tahei | Process for inorganically coloring aluminium | |
| US3382160A (en) * | 1960-03-31 | 1968-05-07 | Asada Tahei | Process for inorganically coloring aluminum |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT286056B (de) * | 1969-08-22 | 1970-11-25 | Christof Piesslinger Fa | Verfahren und Farblösung zum Färben von anodisch oxydierten Gegenständen aus Aluminium oder dessen Legierungen |
-
1970
- 1970-04-02 CH CH486770A patent/CH535835A/de not_active IP Right Cessation
-
1971
- 1971-03-26 SE SE7103984A patent/SE373607B/xx unknown
- 1971-03-29 BE BE764954A patent/BE764954A/xx not_active IP Right Cessation
- 1971-03-31 DK DK152971A patent/DK144481C/da active
- 1971-04-01 FR FR7111554A patent/FR2085799B1/fr not_active Expired
- 1971-04-01 NO NO1246/71A patent/NO131551C/no unknown
- 1971-04-01 AT AT279671A patent/AT323497B/de not_active IP Right Cessation
- 1971-04-01 US US00130484A patent/US3787295A/en not_active Expired - Lifetime
- 1971-04-01 FI FI710923A patent/FI51501C/fi active
- 1971-04-02 DE DE19712116251 patent/DE2116251B2/de not_active Ceased
- 1971-04-02 NL NLAANVRAGE7104433,A patent/NL175200C/xx not_active IP Right Cessation
- 1971-04-19 GB GB2637671*A patent/GB1342776A/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA662063A (en) * | 1963-04-30 | Asada Tahei | Process for inorganically coloring aluminium | |
| US3382160A (en) * | 1960-03-31 | 1968-05-07 | Asada Tahei | Process for inorganically coloring aluminum |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| Handbook of Chemistry and Physics, 32nd ed. 1950, p. 1521 * |
| Modern Electroplating by Lowenheim, 1963, p 468. * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3963591A (en) * | 1971-06-17 | 1976-06-15 | Swiss Aluminium Ltd. | Method of coloring of anodized aluminum and aluminum alloys by electrolytic treatment in the metal salt solutions |
| US3915813A (en) * | 1972-11-21 | 1975-10-28 | Showa Aluminium Co Ltd | Method for electrolytically coloring aluminum articles |
| US3909367A (en) * | 1973-02-23 | 1975-09-30 | Pechiney Aluminium | Method for creating a polychrome motif on an object made of aluminum or aluminum alloy |
| US3977948A (en) * | 1974-02-20 | 1976-08-31 | Iongraf, S.A. | Process for coloring, by electrolysis, an anodized aluminum or aluminum alloy piece |
| US4014758A (en) * | 1974-04-23 | 1977-03-29 | Pilot Man-Nen-Hitsu Kabushiki Kaisha | Continuous electrolytical treatment of aluminum or its alloys |
| USRE31901E (en) * | 1974-04-23 | 1985-05-28 | Pilot Man-Nen-Hitsu Kabushiki Kaisha | Continuous electrolytical treatment of aluminum or its alloys |
| US4043880A (en) * | 1975-07-24 | 1977-08-23 | Sumitomo Aluminum Smelting Co., Ltd. | Method for producing green-colored anodic oxide film on aluminum or aluminum base alloy articles |
| US4310586A (en) * | 1978-01-17 | 1982-01-12 | Alcan Research And Development Limited | Aluminium articles having anodic oxide coatings and methods of coloring them by means of optical interference effects |
| US4251330A (en) * | 1978-01-17 | 1981-02-17 | Alcan Research And Development Limited | Electrolytic coloring of anodized aluminium by means of optical interference effects |
| US4230539A (en) * | 1979-07-09 | 1980-10-28 | Fujikura Cable Works, Ltd. | Method for surface treatment of anodic oxide film |
| US4430169A (en) | 1982-03-04 | 1984-02-07 | Woods Jack L | Method of producing green coatings on aluminum and aluminum alloys |
| US5674371A (en) * | 1989-11-08 | 1997-10-07 | Clariant Finance (Bvi) Limited | Process for electrolytically treating aluminum and compositions therefor |
| US5587063A (en) * | 1992-12-24 | 1996-12-24 | Henkel Kommanditgesellschaft Auf Aktien | Method for electrolytic coloring of aluminum surfaces using alternating current |
| US20090220806A1 (en) * | 2005-10-27 | 2009-09-03 | Clariant International Ltd. | Method for Improving the Corrosion Resistance and Lightfastness of Painted Aluminum Oxide Layers |
| US8057858B2 (en) * | 2005-10-27 | 2011-11-15 | Clariant Finance (Bvi) Limited | Method for improving the corrosion resistance and lightfastness of painted aluminum oxide layers |
| ITMO20100144A1 (it) * | 2010-05-12 | 2011-11-13 | Giuseppe Librizzi | Lega di alluminio |
| US20130153427A1 (en) * | 2011-12-20 | 2013-06-20 | Apple Inc. | Metal Surface and Process for Treating a Metal Surface |
| EP3553208A1 (de) * | 2018-04-09 | 2019-10-16 | DURA Operating, LLC | Verfahren zum herstellen eines aluminiumbauteils mit einer farbigen oberfläche |
| CN110359072A (zh) * | 2018-04-09 | 2019-10-22 | 德韧营运有限责任公司 | 生产具有着色表面的铝部件的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2085799A1 (enrdf_load_stackoverflow) | 1971-12-31 |
| BE764954A (fr) | 1971-08-16 |
| DK144481B (da) | 1982-03-15 |
| FI51501C (fi) | 1977-01-10 |
| NL175200B (nl) | 1984-05-01 |
| FI51501B (enrdf_load_stackoverflow) | 1976-09-30 |
| DE2116251B2 (de) | 1977-01-27 |
| CH535835A (de) | 1973-04-15 |
| NO131551B (enrdf_load_stackoverflow) | 1975-03-10 |
| AT323497B (de) | 1975-07-10 |
| DK144481C (da) | 1982-08-30 |
| DE2116251A1 (de) | 1971-10-14 |
| GB1342776A (en) | 1974-01-03 |
| SE373607B (sv) | 1975-02-10 |
| NO131551C (enrdf_load_stackoverflow) | 1975-06-18 |
| FR2085799B1 (enrdf_load_stackoverflow) | 1975-03-21 |
| NL175200C (nl) | 1984-10-01 |
| NL7104433A (enrdf_load_stackoverflow) | 1971-10-05 |
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