ATE198631T1 - NON-CHROMATED OXIDE COATINGS FOR ALUMINUM SUBSTRATES - Google Patents

NON-CHROMATED OXIDE COATINGS FOR ALUMINUM SUBSTRATES

Info

Publication number
ATE198631T1
ATE198631T1 AT93914728T AT93914728T ATE198631T1 AT E198631 T1 ATE198631 T1 AT E198631T1 AT 93914728 T AT93914728 T AT 93914728T AT 93914728 T AT93914728 T AT 93914728T AT E198631 T1 ATE198631 T1 AT E198631T1
Authority
AT
Austria
Prior art keywords
cobalt
conversion coating
solution
hexavalent complex
iii hexavalent
Prior art date
Application number
AT93914728T
Other languages
German (de)
Inventor
Matthias P Schriever
Original Assignee
Boeing Co
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 US07/903,853 external-priority patent/US5411606A/en
Application filed by Boeing Co filed Critical Boeing Co
Application granted granted Critical
Publication of ATE198631T1 publication Critical patent/ATE198631T1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/56—Treatment of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
    • C23C22/66—Treatment of aluminium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8

Landscapes

  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Paints Or Removers (AREA)
  • Chemically Coating (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Insulated Metal Substrates For Printed Circuits (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

(A) A process for forming a cobalt conversion coating on a metal substrate, thereby imparting corrosion resistance and paint adhesion properties. The invention was developed as a replacement for the prior art chromic acid process. The process includes the steps of: (a) providing a cobalt conversion solution comprising an aqueous solution containing a soluble cobalt-III hexavalent complex, the concentration of the cobalt-III hexavalent complex being from about 0.01 mole per liter of solution to the solubility limit of the cobalt-III hexavalent complex; and (b) contacting the substrate with the solution for a sufficient amount of time, whereby the cobalt conversion coating is formed. The substrate may be aluminum or aluminum alloy, as well as Cd plated, Zn plated, Zn-Ni plated, and steel. The cobalt-III hexavalent complex may be present in the form of Mem(Co(R)6)n, wherein Me is Na, Li, K, Ca, Zn, Mg, or Mn, and wherein m is 2 or 3, n is 1 or 2, and R is a carboxylate having from 1 to 5 C atoms. (B) A chemical conversion coating solution for producing the cobalt conversion coating on a metal substrate, the solution including an aqueous solution containing a soluble cobalt-III hexavalent complex, the concentration of the cobalt-III hexavalent complex being from about 0.01 mole per liter of solution to the solubility limit of the cobalt-III hexavalent complex. (C) A coated article exhibiting acceptable corrosion resistance and paint adhesion properties, the article including: (a) a metal substrate; and (b) a cobalt conversion coating formed on the substrate, the cobalt conversion coating including aluminum oxide Al2O3 as the largest volume percent, and cobalt oxides CoO, Co2O3, and Co3O4.
AT93914728T 1992-06-25 1993-06-23 NON-CHROMATED OXIDE COATINGS FOR ALUMINUM SUBSTRATES ATE198631T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/903,853 US5411606A (en) 1990-05-17 1992-06-25 Non-chromated oxide coating for aluminum substrates
CNB931017378A CN1138873C (en) 1992-06-25 1993-01-18 Non-chromated oxide coating for aluminum substrates
PCT/EP1993/001630 WO1994000619A1 (en) 1992-06-25 1993-06-23 Non-chromated oxide coating for aluminum substrates

Publications (1)

Publication Number Publication Date
ATE198631T1 true ATE198631T1 (en) 2001-01-15

Family

ID=36793885

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93914728T ATE198631T1 (en) 1992-06-25 1993-06-23 NON-CHROMATED OXIDE COATINGS FOR ALUMINUM SUBSTRATES

Country Status (18)

Country Link
EP (1) EP0646187B1 (en)
JP (1) JP3345010B2 (en)
CN (2) CN1138873C (en)
AT (1) ATE198631T1 (en)
AU (1) AU687740B2 (en)
BR (1) BR9306602A (en)
CA (1) CA2138790C (en)
DE (1) DE69329853T2 (en)
DK (1) DK0646187T3 (en)
ES (1) ES2152950T3 (en)
GR (1) GR3035554T3 (en)
MX (1) MX9303745A (en)
NO (1) NO315522B1 (en)
NZ (1) NZ253699A (en)
RU (1) RU2135637C1 (en)
SG (1) SG43169A1 (en)
WO (1) WO1994000619A1 (en)
ZA (1) ZA934544B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551994A (en) * 1990-05-17 1996-09-03 The Boeing Company Non-chromated oxide coating for aluminum substrates
DK0523288T3 (en) * 1991-07-19 1999-08-02 Boeing Co Non-chromated oxide coatings for aluminum substrates
US5948178A (en) * 1995-01-13 1999-09-07 Henkel Corporation Composition and process for forming a solid adherent protective coating on metal surfaces
WO1996021753A1 (en) * 1995-01-13 1996-07-18 Henkel Corporation Composition and process for forming a solid adherent protective coating on metal surfaces
ZA962178B (en) * 1995-03-22 1996-07-29 Henkel Corp Compositions and processes for forming a solid adherent protective coating on metal surfaces
FR2752851B1 (en) * 1996-09-02 1998-11-13 Cfpi Ind BATH AND METHOD FOR PHOSPHATION OF METAL SUBSTRATES, CONCENTRATE FOR THE PREPARATION OF THIS BATH AND METAL SUBSTRATES TREATED WITH THE BATH AND METHOD
US5873953A (en) * 1996-12-26 1999-02-23 The Boeing Company Non-chromated oxide coating for aluminum substrates
US6315823B1 (en) 1998-05-15 2001-11-13 Henkel Corporation Lithium and vanadium containing sealing composition and process therewith
AU2002361689A1 (en) 2002-01-04 2003-07-30 University Of Dayton Non-toxic corrosion protection pigments based on cobalt
US7235142B2 (en) 2002-01-04 2007-06-26 University Of Dayton Non-toxic corrosion-protection rinses and seals based on cobalt
US7294211B2 (en) 2002-01-04 2007-11-13 University Of Dayton Non-toxic corrosion-protection conversion coats based on cobalt
FR2856079B1 (en) * 2003-06-11 2006-07-14 Pechiney Rhenalu SURFACE TREATMENT METHOD FOR ALUMINUM ALLOY TILES AND BANDS
CN1309864C (en) * 2004-09-29 2007-04-11 广州擎天油漆化工实业有限公司 Environmental protective process for forming transforming film on aluminium and aluminium alloy surface
CN100372972C (en) * 2005-11-03 2008-03-05 复旦大学 Method of growing metal organic compound on solid surface
CN103184445A (en) * 2011-12-28 2013-07-03 上海航天精密机械研究所 Chemical oxidation solution composition for aluminium-alloy surface and chemical oxidation process
CN103266315B (en) * 2013-05-31 2015-05-13 海安县申菱电器制造有限公司 Preparation of aluminum alloy cobalt salt chemical conversion coating treating fluid
CN103266314B (en) * 2013-05-31 2015-05-13 海安县申菱电器制造有限公司 Method for treating aluminum alloy cobalt salt chemical conversion coating
CN104846309A (en) * 2015-05-09 2015-08-19 安徽鼎恒再制造产业技术研究院有限公司 High-strength Co3O4-SiC coating materials and preparation method thereof
CN106868495B (en) * 2017-01-23 2019-06-11 江苏理工学院 A kind of recycling and reusing method of cobalt salt chemical oxidation waste liquid
CN112533756A (en) * 2018-06-28 2021-03-19 尼蓝宝股份有限公司 Simultaneous surface modification and method for producing the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381203A (en) * 1981-11-27 1983-04-26 Amchem Products, Inc. Coating solutions for zinc surfaces
US5298092A (en) * 1990-05-17 1994-03-29 The Boeing Company Non-chromated oxide coating for aluminum substrates
DE69126507T2 (en) * 1990-11-30 1997-09-25 Boeing Co Chromate-free cobalt conversion coating
DK0523288T3 (en) * 1991-07-19 1999-08-02 Boeing Co Non-chromated oxide coatings for aluminum substrates

Also Published As

Publication number Publication date
CN1080963A (en) 1994-01-19
ZA934544B (en) 1994-03-18
AU4500893A (en) 1994-01-24
DE69329853T2 (en) 2001-04-26
JPH07508311A (en) 1995-09-14
SG43169A1 (en) 1997-10-17
JP3345010B2 (en) 2002-11-18
BR9306602A (en) 1998-12-08
AU687740B2 (en) 1998-03-05
NO945026L (en) 1995-02-24
CA2138790C (en) 2004-10-19
CN1090338A (en) 1994-08-03
CN1138873C (en) 2004-02-18
RU2135637C1 (en) 1999-08-27
CN1195893C (en) 2005-04-06
NZ253699A (en) 1997-05-26
EP0646187A1 (en) 1995-04-05
NO945026D0 (en) 1994-12-23
ES2152950T3 (en) 2001-02-16
WO1994000619A1 (en) 1994-01-06
EP0646187B1 (en) 2001-01-10
DK0646187T3 (en) 2001-04-30
RU94046218A (en) 1996-10-20
CA2138790A1 (en) 1994-01-06
GR3035554T3 (en) 2001-06-29
MX9303745A (en) 1994-02-28
NO315522B1 (en) 2003-09-15
DE69329853D1 (en) 2001-02-15

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Legal Events

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UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee