EP0127774A2 - Procédé de protection de l'aluminium anodisé - Google Patents

Procédé de protection de l'aluminium anodisé Download PDF

Info

Publication number: EP0127774A2
Authority: EP; European Patent Office
Prior art keywords: solution; anodized; cobalt; nickel; protecting
Prior art date: 1983-05-03
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

EP84104941A

Other languages

German (de)

English (en)

Other versions

EP0127774A3 (en

EP0127774B1 (fr

Inventor

Elia Maria Alvarez Sanchis

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.)

Individual

Original Assignee

Individual

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.)

1983-05-03

Filing date

1984-05-03

Publication date

1984-12-12

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8485664&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0127774(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1984-05-03 Application filed by Individual filed Critical Individual

1984-12-12 Publication of EP0127774A2 publication Critical patent/EP0127774A2/fr

1985-06-19 Publication of EP0127774A3 publication Critical patent/EP0127774A3/de

1988-09-28 Application granted granted Critical

1988-09-28 Publication of EP0127774B1 publication Critical patent/EP0127774B1/fr

Status Expired legal-status Critical Current

Links

229910052782 aluminium Inorganic materials 0.000 title claims abstract description 22
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 22
238000000034 method Methods 0.000 title claims abstract description 11
239000004411 aluminium Substances 0.000 title description 2
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 14
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 9
239000010941 cobalt Substances 0.000 claims abstract description 8
229910052759 nickel Inorganic materials 0.000 claims abstract description 7
229910017052 cobalt Inorganic materials 0.000 claims abstract description 5
KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 4
229940104869 fluorosilicate Drugs 0.000 claims abstract description 4
229910001429 cobalt ion Inorganic materials 0.000 claims abstract 3
229910001453 nickel ion Inorganic materials 0.000 claims abstract 3
VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 claims abstract 2
238000002161 passivation Methods 0.000 claims description 7
-1 nickel ions fluorine derivatives Chemical class 0.000 claims description 4
238000005260 corrosion Methods 0.000 abstract description 4
230000007797 corrosion Effects 0.000 abstract description 4
150000002221 fluorine Chemical class 0.000 abstract description 3
230000007613 environmental effect Effects 0.000 abstract description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
239000000243 solution Substances 0.000 description 11
238000007743 anodising Methods 0.000 description 6
DBJLJFTWODWSOF-UHFFFAOYSA-L nickel(ii) fluoride Chemical compound F[Ni]F DBJLJFTWODWSOF-UHFFFAOYSA-L 0.000 description 5
230000004580 weight loss Effects 0.000 description 5
150000001450 anions Chemical class 0.000 description 4
229910052751 metal Inorganic materials 0.000 description 4
239000002184 metal Substances 0.000 description 4
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
150000001768 cations Chemical class 0.000 description 3
235000019646 color tone Nutrition 0.000 description 3
150000003839 salts Chemical class 0.000 description 3
239000004925 Acrylic resin Substances 0.000 description 2
229920000178 Acrylic resin Polymers 0.000 description 2
KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
239000007864 aqueous solution Substances 0.000 description 2
238000009835 boiling Methods 0.000 description 2
150000001868 cobalt Chemical class 0.000 description 2
230000006835 compression Effects 0.000 description 2
238000007906 compression Methods 0.000 description 2
238000001035 drying Methods 0.000 description 2
238000007654 immersion Methods 0.000 description 2
239000000203 mixture Substances 0.000 description 2
239000000126 substance Substances 0.000 description 2
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
230000002411 adverse Effects 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Chemical class O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
239000011248 coating agent Substances 0.000 description 1
238000000576 coating method Methods 0.000 description 1
229940011182 cobalt acetate Drugs 0.000 description 1
QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
239000003086 colorant Substances 0.000 description 1
239000013527 degreasing agent Substances 0.000 description 1
238000005237 degreasing agent Methods 0.000 description 1
239000012153 distilled water Substances 0.000 description 1
230000000694 effects Effects 0.000 description 1
239000003792 electrolyte Substances 0.000 description 1
239000011737 fluorine Substances 0.000 description 1
229910052731 fluorine Inorganic materials 0.000 description 1
150000002815 nickel Chemical class 0.000 description 1
229910017604 nitric acid Inorganic materials 0.000 description 1
MYHXWQZHYLEHIU-UHFFFAOYSA-N oxalic acid;sulfuric acid Chemical compound OS(O)(=O)=O.OC(=O)C(O)=O MYHXWQZHYLEHIU-UHFFFAOYSA-N 0.000 description 1
239000011148 porous material Substances 0.000 description 1
BXNRKCXZILSQHE-UHFFFAOYSA-N propane-1,2,3-triol;sulfuric acid Chemical compound OS(O)(=O)=O.OCC(O)CO BXNRKCXZILSQHE-UHFFFAOYSA-N 0.000 description 1
239000011253 protective coating Substances 0.000 description 1
239000012266 salt solution Substances 0.000 description 1
PXLIDIMHPNPGMH-UHFFFAOYSA-N sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 1
235000011121 sodium hydroxide Nutrition 0.000 description 1
150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
238000007601 warm air drying Methods 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
- C25D11/24—Chemical after-treatment

Definitions

the invention described here is a method for protecting anodically oxidized aluminum by a metal-containing salt solution at low temperature.
Passivation in solutions with chromates has the advantage that it is possible to work at lower temperatures. However, it adversely changes the decorative aspect of the aluminum profiles. It is also state of the art to use metal salts such as nickel fluoride in order to produce high-quality protection of the anodized layer. Although these solutions are used at temperatures between 20 0 C and 42 ° C for the application and therefore constitute a significant energy cost savings, they have the advantage that the anodized aluminum obtained by this treatment has a "green tint", and thereby loses the decorative natural appearance of the disadvantage.
the purpose of the present invention is to prevent the so-called "green tinge", which is caused by the use of nickel fluoride as a passivating agent, and to maintain the natural decorative effect of the anodized aluminum, while at the same time providing a high level of corrosion protection against environmental influences, which can be termed “high quality” , is reached.
“High quality” is understood to mean a dirt-free surface which does not show any unnatural colors such as the "green tint” and which, according to ISO standard 3210, has protection against corrosion, the maximum weight loss of which was set at 30 mg / dm 2 .
the present invention therefore relates to a process in which nickel with cobalt as a cation in the presence of the anions, such as fluoride, fluoroborate and fluorosilicate, etc. is used in solution.
anions such as fluoride, fluoroborate and fluorosilicate, etc.
Sulfates of the metal-containing salts can also be used, but always in conjunction with fluorine derivatives.
the basis of the invention is that the concentrations of the cations nickel and cobalt must be kept in relation to one another in order to maintain the excellent quality of the protection of the anodized layer and at the same time to prevent the occurrence of undesirable color tones such as "greenish tinge".
a degreased and pickled aluminum sheet was anodized in an electrolyte of 190 g / 1 sulfuric acid at a temperature of 19 ° C. with direct current for 40 minutes at a current density of 1.5 A / dm 2 .
the aluminum sheets were then immersed in a solution of various chemical products at a temperature of 30 ° C. for 12 minutes.
the weight loss was determined in accordance with the ISO 3210 standard.
Drying of the anodized aluminum treated in the passivation solution can be achieved by treating it in boiling water for 5 minutes or by storing it for 48 hours at an air temperature of 20 ° C to 30 ° C. Warm air drying devices can also be used.
the pH should be between 5.0 and 7.0 and the metal salt concentration of at least 0.02 mol / 1 to at most 0.2 mol / 1 must be maintained.
Aluminum which was anodized in oxalic acid-sulfuric acid or glycerine-sulfuric acid, also provided high-quality protection through the described passivation solution, even at anodizing bath temperatures above 21 ° C.
the aluminum sheets were cleaned by an alkaline degreasing agent before anodizing and then pickled with a mixture of 4% caustic soda and 0.2% sodium chromate at a temperature of 55 ° C. Then they were 10 minutes in nitric acid and 1 min. aftertreated in hydrofluoric acid before being subjected to the anodizing and passivation process as follows:
the aluminum sheet sample was anodized after the pretreatment already set out under the following conditions.
the sample was immersed in this solution for 12 minutes at 30 ° C and pH 6.4.
the weight loss of the dry aluminum sheet was determined according to ISO standard 3210 to be 10.5 mg / dm 2 .
the anodized sheet was immersed in a solution containing the following products:
the pH of the solution was adjusted to 6.1 and after an immersion time of 15 minutes at 32 ° C. with subsequent rinsing for 5 minutes in hot water, the weight loss according to ISO 3210 was determined to be 13.4 mg / dm 2 .

Landscapes

Chemical & Material Sciences (AREA)
General Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Chemical Kinetics & Catalysis (AREA)
Electrochemistry (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Chemical Treatment Of Metals (AREA)
Chemically Coating (AREA)

EP84104941A 1983-05-03 1984-05-03 Procédé de protection de l'aluminium anodisé Expired EP0127774B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
ES522048A ES8406565A1 (es)	1983-05-03	1983-05-03	Procedimiento para la proteccion del aluminio, previamente anodizado.
ES522048		1983-05-03

Publications (3)

Publication Number	Publication Date
EP0127774A2 true EP0127774A2 (fr)	1984-12-12
EP0127774A3 EP0127774A3 (en)	1985-06-19
EP0127774B1 EP0127774B1 (fr)	1988-09-28

Family

ID=8485664

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP84104941A Expired EP0127774B1 (fr)	1983-05-03	1984-05-03	Procédé de protection de l'aluminium anodisé

Country Status (5)

Country	Link
EP (1)	EP0127774B1 (fr)
AT (1)	AT382398B (fr)
DE (1)	DE3474319D1 (fr)
ES (1)	ES8406565A1 (fr)
PT (1)	PT78515B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3522117A1 (de) *	1985-06-20	1987-01-02	Metall Und Oberflaechenchemie	Oberflaechenbehandlungsverfahren fuer aluminium und seine legierungen
EP0399168A1 (fr) *	1989-05-26	1990-11-28	Gebr. Happich GmbH	Procédé de colmatage d'une couche d'oxyde obtenue par voie anodique sur des pièces en aluminium ou alliage d'alluminium
EP0399172A3 (fr) *	1989-05-26	1991-06-12	Gebr. Happich GmbH	Procédé pour obtenir des surfaces colorées sur des pièces en aluminium ou en alliages d'aluminium
WO1992018661A1 (fr) *	1991-04-15	1992-10-29	Henkel Corporation	Traitement de surfaces metalliques
EP2728041A1 (fr) *	2012-10-30	2014-05-07	Hydro Aluminium Rolled Products GmbH	Bande d'aluminium revêtu et procédé de fabrication

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3071494A (en) *	1961-09-27	1963-01-01	Koppers Co Inc	Sealing of dyed anodized aluminum
US3849264A (en) *	1972-09-05	1974-11-19	Lockheed Aircraft Corp	Production of stain resistant, clear, sealed anodized films
JPS5415856B2 (fr) *	1974-02-28	1979-06-18
JPS54116350A (en) *	1978-03-02	1979-09-10	Nippon Senka Kougiyou Kk	Pore sealing treatment of anodic oxide film of aluminium and alloy thereof
IT1150110B (it) *	1982-01-18	1986-12-10	Tec A Systems Di Portioli Guid	Composizione e procentimento per il fissaggio a freddo delle superfici anodizzate dei manufatti di alluminio e delle sue leghe
EP0118480B1 (fr) *	1982-09-03	1987-12-02	Ffa Flug- Und Fahrzeugwerke Ag	Procede de recompression

1983
- 1983-05-03 ES ES522048A patent/ES8406565A1/es not_active Expired
1984
- 1984-05-02 PT PT78515A patent/PT78515B/pt unknown
- 1984-05-03 DE DE8484104941T patent/DE3474319D1/de not_active Expired
- 1984-05-03 EP EP84104941A patent/EP0127774B1/fr not_active Expired
- 1984-05-03 AT AT0147984A patent/AT382398B/de not_active IP Right Cessation

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3522117A1 (de) *	1985-06-20	1987-01-02	Metall Und Oberflaechenchemie	Oberflaechenbehandlungsverfahren fuer aluminium und seine legierungen
EP0399168A1 (fr) *	1989-05-26	1990-11-28	Gebr. Happich GmbH	Procédé de colmatage d'une couche d'oxyde obtenue par voie anodique sur des pièces en aluminium ou alliage d'alluminium
EP0399172A3 (fr) *	1989-05-26	1991-06-12	Gebr. Happich GmbH	Procédé pour obtenir des surfaces colorées sur des pièces en aluminium ou en alliages d'aluminium
WO1992018661A1 (fr) *	1991-04-15	1992-10-29	Henkel Corporation	Traitement de surfaces metalliques
EP2728041A1 (fr) *	2012-10-30	2014-05-07	Hydro Aluminium Rolled Products GmbH	Bande d'aluminium revêtu et procédé de fabrication
WO2014067937A1 (fr) *	2012-10-30	2014-05-08	Hydro Aluminium Rolled Products Gmbh	Bande d'aluminium revêtue et son procédé de fabrication
CN104822865A (zh) *	2012-10-30	2015-08-05	海德鲁铝业钢材有限公司	涂覆铝带材及其制造方法
CN104822865B (zh) *	2012-10-30	2017-02-22	海德鲁铝业钢材有限公司	涂覆铝带材及其制造方法

Also Published As

Publication number	Publication date
ES522048A0 (es)	1984-07-16
EP0127774A3 (en)	1985-06-19
ES8406565A1 (es)	1984-07-16
PT78515A (es)	1984-06-01
DE3474319D1 (en)	1988-11-03
EP0127774B1 (fr)	1988-09-28
PT78515B (es)	1986-07-14
ATA147984A (de)	1986-07-15
AT382398B (de)	1987-02-25

Legal Events

Date	Code	Title	Description
1984-10-15	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1984-12-12	AK	Designated contracting states	Designated state(s): AT BE CH DE FR GB IT LI LU NL SE
1985-03-13	RBV	Designated contracting states (corrected)	Designated state(s): BE CH DE FR GB IT LI LU NL SE
1985-04-17	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1985-06-19	AK	Designated contracting states	Designated state(s): BE CH DE FR GB IT LI LU NL SE
1986-02-19	17P	Request for examination filed	Effective date: 19851211
1987-03-11	17Q	First examination report despatched	Effective date: 19870126
1988-08-13	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1988-09-28	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE CH DE FR GB IT LI LU NL SE
1988-10-12	ITF	It: translation for a ep patent filed
1988-11-02	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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1989-10-16	NLR1	Nl: opposition has been filed with the epo	Opponent name: SANDOZ AG PATENT- UND MARKENABTEILUNG
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1991-04-10	27C	Opposition proceedings terminated	Effective date: 19901019
1991-05-31	ITTA	It: last paid annual fee
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1995-01-31	EAL	Se: european patent in force in sweden	Ref document number: 84104941.4
1996-05-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19960515 Year of fee payment: 13
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Publication	Publication Date	Title
DE3715663C2 (fr)	1992-04-16
DE2812116A1 (de)	1978-10-12	Verfahren zum herstellen eines ueberzugsfilms auf dem korrosionsbestaendigen, anodisch oxydierten oberflaechenfilm von aluminiumerzeugnissen
EP0902849A1 (fr)	1999-03-24	Scellement thermique rapide de surfaces metalliques anodisees realise au moyen de solutions contenant des tensioactifs
DE2650989C2 (de)	1985-01-24	Verfahren zur Behandlung von Aluminiumoberflächen durch Oxidation mit einer nachfolgenden Verdichtung
DE10149928C1 (de)	2002-12-12	Verfahren zum Glänzen von Aluminium und dessen Verwendung
DE2162674C3 (de)	1982-05-19	Verfahren zum Verdichten von anodischen Oxidschichten auf Aluminium- oder Aluminiumlegierungen
DE2600654B2 (de)	1977-09-08	Verfahren zur gleichzeitigen kathodischen abscheidung einer chromschicht und einer darueberliegenden schicht aus hydratisierten chromoxiden auf stahlblechen
EP0293774B1 (fr)	1992-11-19	Procédé de coloration électrolytique de l'aluminium anodisé
EP0347663B1 (fr)	1993-08-18	Procédé pour la densification de couches d'oxyde anodisées sur l'aluminium et ses alliages
DE3334628A1 (de)	1984-03-29	Oberflaechenbehandlung fuer aluminium oder aluminiumlegierungen
EP0103234B1 (fr)	1987-07-08	Procédé de colmatage de couches d'oxyde obtenues par voie anodique sur de l'aluminium ou des alliages d'aluminium
EP0127774B1 (fr)	1988-09-28	Procédé de protection de l'aluminium anodisé
DE813916C (de)	1951-09-17	Verfahren zur elektrolytischen Herstellung eines Schutzueberzuges auf Zink
DE2433491C3 (de)	1978-06-01	Verfahren zur elektrolytischen Ausbildung einer eidechsenhautartigen Oberfläche auf Aluminium und Aluminiumlegierungen
DE1963587A1 (de)	1970-06-25	Verfahren zur Herstellung von farbigen Schutzueberzuegen auf Aluminium oder Aluminiumlegierungen
DE2022619C3 (de)	1974-08-08	Verfahren zum elektrolytischen Färben anodischer Oxidschichten auf Aluminium und seinen Legierungen
EP0355390A1 (fr)	1990-02-28	Procédé de coloration adsorptif de surfaces obtenues par voie anodique
DE480720C (de)	1929-08-08	Verfahren zum Versehen von Metall, das vorwiegend oder gaenzlich aus Aluminium besteht, mit einem unregelmaessig gesprenkelten UEberzug
DE2844406B1 (de)	1980-03-20	Nachverdichtungsbad und Verfahren zur Verhinderung von Belaegen bei der Nachverdichtung anodisch oxidierter Aluminiumoberflaechen
EP0213331B1 (fr)	1990-06-27	Elément constitutif en aluminium ou en alliage d'aluminium muni d'un revêtement en oxyde dur ainsi que procédé de fabrication d'un élément constitutif
DE2049796A1 (de)	1971-05-06	Verfahren zum Aufbringen von Überzügen auf Aluminium
DE3522117C2 (fr)	1989-12-14
CH682240A5 (fr)	1993-08-13
DE2413149C3 (de)	1978-10-05	Verfahren zum kathodischen Gleichstrom-Farben von anodischen Oxidschichten auf Aluminium oder Aluminiumlegierungen
EP1141449B1 (fr)	2003-05-02	Procede pour rendre plus sombre une couche superficielle d'un objet, cette couche contenant du zinc