EP0090268B1 - Verfahren zum Anodisieren von Aluminiumwerkstoffen und aluminierten Teilen - Google Patents

Verfahren zum Anodisieren von Aluminiumwerkstoffen und aluminierten Teilen Download PDF

Info

Publication number
EP0090268B1
EP0090268B1 EP83102616A EP83102616A EP0090268B1 EP 0090268 B1 EP0090268 B1 EP 0090268B1 EP 83102616 A EP83102616 A EP 83102616A EP 83102616 A EP83102616 A EP 83102616A EP 0090268 B1 EP0090268 B1 EP 0090268B1
Authority
EP
European Patent Office
Prior art keywords
aluminum
bath
anodising
parts
anodizing
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
Application number
EP83102616A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0090268A2 (de
EP0090268A3 (en
Inventor
Siegfried Dr. Birkle
Klaus Stöger
Hans De Vries
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT83102616T priority Critical patent/ATE28760T1/de
Publication of EP0090268A2 publication Critical patent/EP0090268A2/de
Publication of EP0090268A3 publication Critical patent/EP0090268A3/de
Application granted granted Critical
Publication of EP0090268B1 publication Critical patent/EP0090268B1/de
Expired 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
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
    • 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 invention relates to a method for anodizing aluminum materials according to the preamble of patent claim 1.
  • Aluminum materials and aluminum-coated parts are not yet sufficiently stable for many applications, although self-passivation takes place in air, which is stable in the pH range from 5 to 9. However, this oxide layer is still too small for many technical applications. The layer is therefore reinforced in anodizing electrolytes.
  • FR-A-2 187 937 describes a process for the surface treatment of aluminum plates with the aim of making anodizing layers hydrophilic and adhesive by anodic oxidation of aluminum in trisodium phosphate-containing electrolyte solution at temperatures of 20 to 40 ° C. and an electrolysis time of 3 to 10 minutes to keep.
  • DE-OS 2 842 396 discloses a “process for the glossy anodization of aluminum” which is based on a work cited in “Material Aluminum and its Anodic Oxidation” by Max Schenk, 1948, page 801. According to M. Schenk, the alkaline aqueous gloss bath at 80 ° C + 1 ° C contains sodium carbonate and tertiary sodium phosphate.
  • an alkaline bath with sodium phosphate as the main constituent is used to produce shiny aluminum oxide layers with a maximum thickness of 4 ⁇ m.
  • Aluminum or aluminum alloys are bright anodized at a bath temperature of 20 to 90 ° C and a current density of 0.5 to 80 A / dm 2 .
  • these treatments (“glossy processes”) lead to shiny films, which are often undesirable.
  • the object of the invention is to provide aluminum materials and parts coated with aluminum, in particular iron materials, while avoiding the disadvantages mentioned above, with hard abrasion-resistant and dyeable thicker aluminum oxide layers, in particular those of 10 to 20 ⁇ m, even if the aluminum coating has any defects having.
  • defects such.
  • B. the uncoated contact points in question, or in the case of profiled parts, the uncoated points, which may be present due to the limited spreadability aluminizing process. It should also be used on partially aluminized consumer metals such as iron, non-ferrous metal, nickel and zinc die-cast materials without destroying the Base material in the anodization thick aluminum oxide layers are generated.
  • aluminum materials and aluminized parts in particular also partially aluminized parts made of ferrous, nickel and non-ferrous metal materials as well as zinc die-cast metals, even if they have defects, can be anodically oxidized without any technical disadvantages, so that hard, abrasion-resistant and dyeable oxide layers are formed.
  • the surfaces of aluminized parts are not shiny, but retain the appearance of the deposited aluminum layers.
  • the oxide layers produced are above all 4 ⁇ m thick. They are characterized by exceptional hardness and abrasion resistance.
  • the method according to the invention is also particularly suitable for achieving the aforementioned layer properties with aluminum materials.
  • the bath can be operated with direct current and with impulse current.
  • Baths containing 50 to 150 g / l of trisodium phosphate or tripotassium phosphate are advantageously used to carry out the process according to the invention.
  • optically most uniform anodizing layers are obtained by adding 1 to 20 g of a complexing agent per liter of anodizing bath, for example alkali metal cyanide. Preferably 1 to 6 g of sodium cyanide are added to the bath per liter.
  • the method according to the invention is suitable for anodizing aluminum materials, aluminum flame spraying layers and roll-cladding layers, fire aluminum layers, PVD aluminum layers and in particular IVD and galvano aluminum layers.
  • Galvano aluminum is an aluminum of high purity (> 99.99), good electrical conductivity and high ductility ⁇ 20 HV, which is obtained by deposition from organoaluminum electrolytes.
  • FIG shows in section an embodiment of a hinge 1 of a spectacle frame made of nickel silver 4, which has an aluminum layer 2.
  • the aluminum oxide layer applied to this according to the invention is designated by 3.
  • Iron sheets 50 x 100 x 1 mm were first galvanically coated in an aluminum electrolyte with the following composition with a matt galvano-aluminum layer.
  • the spectacle frames 1 to 3 were treated in an anodizing bath as described in Example 1.
  • eyeglass frames 4 to 6 were treated after pickling in an electrolyte of the following composition, the anodizing conditions being chosen from 1 to 3:
  • the eyeglass frames 1 to 3 on the hinges looked more inconsistent after coloring the anodized layer
  • the eyeglass frames 4 to 6 gave a uniform visual appearance.
  • the complexing agent at the phase boundary with aluminum contributes to a more homogeneous oxide formation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Forging (AREA)
  • Table Devices Or Equipment (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)
EP83102616A 1982-03-30 1983-03-16 Verfahren zum Anodisieren von Aluminiumwerkstoffen und aluminierten Teilen Expired EP0090268B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83102616T ATE28760T1 (de) 1982-03-30 1983-03-16 Verfahren zum anodisieren von aluminiumwerkstoffen und aluminierten teilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3211759 1982-03-30
DE19823211759 DE3211759A1 (de) 1982-03-30 1982-03-30 Verfahren zum anodisieren von aluminiumwerkstoffen und aluminierten teilen

Publications (3)

Publication Number Publication Date
EP0090268A2 EP0090268A2 (de) 1983-10-05
EP0090268A3 EP0090268A3 (en) 1985-05-15
EP0090268B1 true EP0090268B1 (de) 1987-08-05

Family

ID=6159748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102616A Expired EP0090268B1 (de) 1982-03-30 1983-03-16 Verfahren zum Anodisieren von Aluminiumwerkstoffen und aluminierten Teilen

Country Status (5)

Country Link
US (1) US4439287A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0090268B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS58177493A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE28760T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE3211759A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3328049A1 (de) * 1983-08-03 1985-02-21 Hoechst Ag, 6230 Frankfurt Verfahren zur einstufigen anodischen oxidation von traegermaterialien aus aluminium fuer offsetdruckplatten
US4894126A (en) * 1988-01-15 1990-01-16 Mahmoud Issa S Anodic coatings on aluminum for circuit packaging
US4898651A (en) * 1988-01-15 1990-02-06 International Business Machines Corporation Anodic coatings on aluminum for circuit packaging
US5097109A (en) * 1990-02-20 1992-03-17 General Motors Corporation Insulated aluminum weld fixture and a method of making same
GB2395491B (en) * 2001-08-14 2006-03-01 Magnesium Technology Ltd Magnesium anodisation system and methods
US6591954B2 (en) 2001-09-28 2003-07-15 Eaton Corporation Clutch brake
US7569132B2 (en) * 2001-10-02 2009-08-04 Henkel Kgaa Process for anodically coating an aluminum substrate with ceramic oxides prior to polytetrafluoroethylene or silicone coating
US7820300B2 (en) * 2001-10-02 2010-10-26 Henkel Ag & Co. Kgaa Article of manufacture and process for anodically coating an aluminum substrate with ceramic oxides prior to organic or inorganic coating
US6916414B2 (en) 2001-10-02 2005-07-12 Henkel Kommanditgesellschaft Auf Aktien Light metal anodization
US7452454B2 (en) * 2001-10-02 2008-11-18 Henkel Kgaa Anodized coating over aluminum and aluminum alloy coated substrates
US7578921B2 (en) 2001-10-02 2009-08-25 Henkel Kgaa Process for anodically coating aluminum and/or titanium with ceramic oxides
JP5334445B2 (ja) * 2008-04-07 2013-11-06 本田技研工業株式会社 アルミニウム合金製部材及びその製造方法
US9701177B2 (en) 2009-04-02 2017-07-11 Henkel Ag & Co. Kgaa Ceramic coated automotive heat exchanger components
US8609254B2 (en) 2010-05-19 2013-12-17 Sanford Process Corporation Microcrystalline anodic coatings and related methods therefor
US8512872B2 (en) 2010-05-19 2013-08-20 Dupalectpa-CHN, LLC Sealed anodic coatings

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432424B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-06-03 1979-10-15
JPS5451936A (en) * 1977-09-30 1979-04-24 Shokosha Kk Electropolishing of aluminum and alloy thereof
US4188270A (en) * 1978-09-08 1980-02-12 Akiyoshi Kataoka Process for electrolytically forming glossy film on articles of aluminum or alloy thereof
JPS5576093A (en) * 1978-11-30 1980-06-07 Shiyoukoushiya:Kk Bright electrolysis method of aluminum or its alloy
JPS568118A (en) * 1979-11-14 1981-01-27 Minolta Camera Co Ltd T.t.l. metering automatic aperture control type single- lens reflex camera

Also Published As

Publication number Publication date
DE3211759A1 (de) 1983-10-06
EP0090268A2 (de) 1983-10-05
ATE28760T1 (de) 1987-08-15
EP0090268A3 (en) 1985-05-15
JPS58177493A (ja) 1983-10-18
JPH0359149B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-09-09
DE3372871D1 (en) 1987-09-10
US4439287A (en) 1984-03-27

Similar Documents

Publication Publication Date Title
EP0090268B1 (de) Verfahren zum Anodisieren von Aluminiumwerkstoffen und aluminierten Teilen
EP1301656A1 (de) Verfahren zur oberflächenbehandlung von aluminium oder aluminium-legierungen mittels alkansulfonsäurehaltigen formulierungen
DE2502284C2 (de) Galvanisches Verchromungsbad und Verfahren zum galvanischen Abscheiden von Chromüberzügen unter Verwendung dieses Bades
EP0154367A2 (de) Verfahren zur Phosphatierung von Metallen
DE102008008055B3 (de) Verfahren zum Aufbringen einer multifunktionellen Beschichtung auf Aluminiumteile und beschichtetes Werkstück
DE1040338B (de) Verfahren zur elektrolytischen Herstellung rissfreier Chromueberzuege auf Metallgegenstaenden
EP0090266A2 (de) Bad und Verfahren zum Anodisieren von aluminierten Teilen
DE2166843C3 (de) Verfahren zur Vorbehandlung von Leichtmetallen für die galvanische Abscheidung von Aluminium
DE2917019C2 (de) Verfahren zur Metallisierung von Verbundmaterial und dazu geeignete Badzusammensetzung
DE1228118B (de) Verfahren zur kathodischen Oberflaechen-behandlung von Eisen- und Stahlgegenstaenden
DE2824320C2 (de) Verfahren zur galvanischen Beschichtung mit Nickel und/oder Chrom unter Aufbringung einer Messingzwischenschicht
DE10025643B4 (de) Verfahren zum Beschichten von Aluminium- und Magnesium-Druckgusskörpern mit einer kataphoretischen Elektrotauchlackierungsschicht und mit diesem Verfahren hergestellte Aluminium- und Magnesium-Druckgusskörper
DE882168C (de) Bad und Verfahren zur elektrolytischen Herstellung von Zinkueberzuegen
DE4240903C2 (de) Verfahren zum elektrolytischen Färben eines mit Zink beschichteten Stahlgegenstandes
DE2254857B2 (de) Verfahren zur Herstellung von abnutzungsfesten Nickeldispersionsüberzügen
DE718252C (de) Verfahren zur Erzeugung schwefelwasserstoffbestaendiger galvanischer Silberueberzuege
DE2310638C2 (de) Verfahren zum Umwandeln hydrophober Oberflächen aus Aluminium, Aluminiumlegierungen, Kupfer oder Kupferlegierungen in hydrophile Oberflächen
EP1543180B1 (de) Verfahren zur elektrolytischen beschichtung von werkstoffen mit aluminium, magnesium oder legierungen von aluminium und magnesium
DE2844406B1 (de) Nachverdichtungsbad und Verfahren zur Verhinderung von Belaegen bei der Nachverdichtung anodisch oxidierter Aluminiumoberflaechen
DE19751256C2 (de) Aluminiumdruckgußteil mit einer Aluminiumoxid-Konversionsschicht und Verfahren zu seiner Herstellung
DE2263038C3 (de) Verfahren zum Beschichten von Aluminiumoder Alminiumlegierungsmaterial
DE677025C (de) Verfahren zum Schutz glaenzender oder reflektierender Oberflaechen auf Aluminium oder Aluminiumlegierungen
DE1237871B (de) Tauch- oder Kontaktbeschichtung von Magnesium oder Magnesiumlegierungen
DE663910C (de) Herstellung von Schutzueberzuegen auf mit Aluminium oder Aluminiumlegierungen plattierten Gegenstaenden
DE692124C (de) Verfahren zur elektrolytischen Oxydation von Eisen und Stahl

Legal Events

Date Code Title Description
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

AK Designated contracting states

Designated state(s): AT DE FR GB NL

17P Request for examination filed

Effective date: 19841217

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT DE FR GB NL

17Q First examination report despatched

Effective date: 19860604

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB NL

REF Corresponds to:

Ref document number: 28760

Country of ref document: AT

Date of ref document: 19870815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3372871

Country of ref document: DE

Date of ref document: 19870910

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19920226

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920228

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920323

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920331

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19920521

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930316

Ref country code: AT

Effective date: 19930316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19931001

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930316

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19931130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19931201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST