ES2151069T3 - Recubrimiento de conversion y procedimiento y solucion para la formacion del mismo. - Google Patents

Recubrimiento de conversion y procedimiento y solucion para la formacion del mismo.

Info

Publication number
ES2151069T3
ES2151069T3 ES95921651T ES95921651T ES2151069T3 ES 2151069 T3 ES2151069 T3 ES 2151069T3 ES 95921651 T ES95921651 T ES 95921651T ES 95921651 T ES95921651 T ES 95921651T ES 2151069 T3 ES2151069 T3 ES 2151069T3
Authority
ES
Spain
Prior art keywords
metal
pct
conversion coating
procedure
formation
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
ES95921651T
Other languages
English (en)
Inventor
Karen Joy Hammon Nelson
Russell James Taylor
Anthony Ewart Hughes
Bruce Roy William Hinton
Mark Julian Henderson
Lance Wilson
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.)
Commonwealth Scientific and Industrial Research Organization CSIRO
Original Assignee
Commonwealth Scientific and Industrial Research Organization CSIRO
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 Commonwealth Scientific and Industrial Research Organization CSIRO filed Critical Commonwealth Scientific and Industrial Research Organization CSIRO
Application granted granted Critical
Publication of ES2151069T3 publication Critical patent/ES2151069T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment
    • 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
    • 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
    • C23C22/78—Pretreatment of the material to be coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Materials For Medical Uses (AREA)
  • Chemically Coating (AREA)
  • Fuel Cell (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Hybrid Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Glass Compositions (AREA)

Abstract

UN PROCESO PARA FORMAR UN REVESTIMIENTO DE CONVERSION EN LA SUPERFICIE DE UN METAL, QUE INCLUYE LA PUESTA EN CONTACTO DEL METAL CON UNA SOLUCION ACIDA QUE CONTENGA UN OXIDANTE CON EL FIN DE INICIAR EL CRECIMIENTO DE UNA ESTRUCTURA DE CELULA DE OXIDO DE METAL EN LA SUPERFICIE DE METAL; PUESTA EN CONTACTO DEL METAL CON AGUA DURANTE UN PERIODO DE TIEMPO SUFICIENTE PARA ESPESAR EL OXIDO Y FORMAR UN OXIDO DE METAL QUE CONTENGA UNA CAPA DE UN GROSOR DESEADO; Y TRATAMIENTO DEL METAL CON UNO O MAS ELEMENTOS DE TIERRA RARA CON EL FIN DE IMPREGNAR Y SUSTANCIALMENTE OBTURAR EL OXIDO DE METAL.
ES95921651T 1994-06-10 1995-06-09 Recubrimiento de conversion y procedimiento y solucion para la formacion del mismo. Expired - Lifetime ES2151069T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPM6211A AUPM621194A0 (en) 1994-06-10 1994-06-10 Conversion coating and process for its formation

Publications (1)

Publication Number Publication Date
ES2151069T3 true ES2151069T3 (es) 2000-12-16

Family

ID=3780781

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95921651T Expired - Lifetime ES2151069T3 (es) 1994-06-10 1995-06-09 Recubrimiento de conversion y procedimiento y solucion para la formacion del mismo.

Country Status (13)

Country Link
US (1) US6022425A (es)
EP (1) EP0769080B1 (es)
JP (1) JP3963944B2 (es)
KR (1) KR970704070A (es)
AT (1) ATE196514T1 (es)
AU (2) AUPM621194A0 (es)
CA (1) CA2192449C (es)
CZ (1) CZ359896A3 (es)
DE (1) DE69518923T2 (es)
ES (1) ES2151069T3 (es)
NO (1) NO315569B1 (es)
PL (1) PL317482A1 (es)
WO (1) WO1995034693A1 (es)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ273541A (en) 1993-09-13 1997-11-24 Commw Scient Ind Res Org Cleaning metal surfaces by treatment with alkaline cleaning solution and then with rare earth ion-containing, acidic solution; metal surfaces coated with rare earth (compounds)
AUPM621194A0 (en) * 1994-06-10 1994-07-07 Commonwealth Scientific And Industrial Research Organisation Conversion coating and process for its formation
DE69525475T2 (de) 1994-11-11 2002-10-02 Commonwealth Scientific And Industrial Research Organisation, Campbell Verfahren und lösung zur gewährleistung eines konversionsüberzugs auf einer metalloberfläche
GB2328447A (en) * 1997-08-16 1999-02-24 British Aerospace A desmutting solution for use prior to anodising
US6620519B2 (en) * 1998-04-08 2003-09-16 Lockheed Martin Corporation System and method for inhibiting corrosion of metal containers and components
WO2000036176A2 (en) * 1998-12-15 2000-06-22 Lynntech, Inc. Polymetalate and heteropolymetalate conversion coatings for metal substrates
AUPQ633300A0 (en) 2000-03-20 2000-04-15 Commonwealth Scientific And Industrial Research Organisation Process and solution for providing a conversion coating on a metallic surface ii
AUPQ633200A0 (en) 2000-03-20 2000-04-15 Commonwealth Scientific And Industrial Research Organisation Process and solution for providing a conversion coating on a metallic surface I
WO2002029134A2 (en) * 2000-10-04 2002-04-11 The Johns Hopkins University Method for inhibiting corrosion of alloys employing electrochemistry
US6461683B1 (en) 2000-10-04 2002-10-08 Lockheed Martin Corporation Method for inorganic paint to protect metallic surfaces exposed to moisture, salt and extreme temperatures against corrosion
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
AU2002953190A0 (en) * 2002-12-09 2002-12-19 Commonwealth Scientific And Industrial Research Organisation Aqueous coating solutions and method for the treatment of a metal surface
EP1587885A2 (en) * 2003-01-17 2005-10-26 University of Missouri Curators, Office of Tech. & Spec. Projects Corrosion resistant coatings containing carbon pigments
US7601425B2 (en) * 2003-03-07 2009-10-13 The Curators Of The University Of Missouri Corrosion resistant coatings containing carbon
EP1678345B1 (de) * 2003-11-07 2013-11-20 Henkel AG & Co. KGaA Farbige chromfreie konversionsschichten auf metalloberflächen
US7452427B2 (en) * 2004-12-01 2008-11-18 Deft, Inc. Corrosion resistant conversion coatings
DE102005023729A1 (de) * 2005-05-23 2006-11-30 Basf Coatings Ag Korrosionsschutzmittel und Verfahren zu dessen stromfreier Applikation
US20080286588A1 (en) * 2007-05-18 2008-11-20 Biomedflex, Llc Metallic component with wear and corrosion resistant coatings and methods therefor
WO2010101136A1 (ja) * 2009-03-02 2010-09-10 セントラル硝子株式会社 網目状多孔質構造体およびそれを用いた親水性部材およびこれらの製造方法
JP2010202924A (ja) * 2009-03-02 2010-09-16 Central Glass Co Ltd 網目状多孔質構造体およびその製造方法
US9347134B2 (en) 2010-06-04 2016-05-24 Prc-Desoto International, Inc. Corrosion resistant metallate compositions
CN102108507A (zh) * 2010-12-09 2011-06-29 中国海洋大学 铝合金表面铈耐腐蚀膜的制备工艺
KR101702680B1 (ko) * 2010-12-24 2017-02-03 파나소닉 주식회사 반도체 트랜지스터의 제조 방법, 및 그 방법으로 제조한 반도체 트랜지스터를 이용한 구동 회로, 그 구동 회로와 표시 소자를 포함하여 이루어지는 화소 회로, 그 화소 회로가 행렬형상으로 배치된 표시 패널, 및 그 패널을 구비한 표시 장치
US10876211B2 (en) 2011-09-16 2020-12-29 Prc-Desoto International, Inc. Compositions for application to a metal substrate
CN104099589A (zh) * 2014-06-19 2014-10-15 锐展(铜陵)科技有限公司 一种无铬酸盐的铝合金表面处理剂
CZ2014778A3 (cs) * 2014-11-11 2016-02-17 Univerzita J. E. Purkyně V Ústí Nad Labem Způsob povlakování kovových forem ze slitin typu Al - Mg a Al - Si, zejména pro výrobu pneumatik motorových vozidel v automobilovém průmyslu
KR102410808B1 (ko) 2020-09-08 2022-06-20 주식회사 포스코 아연도금강판의 표면개질 방법 및 그에 따라 표면개질된 아연도금강판
US11926899B2 (en) * 2020-12-04 2024-03-12 Raytheon Company Process for application of oxyhydroxides coating for aluminum containing material

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728188A (en) * 1971-07-29 1973-04-17 Amchem Prod Chrome-free deoxidizing and desmutting composition and method
CA1014831A (en) * 1973-06-06 1977-08-02 Donald J. Melotik Rare earth metal rinse for metal coatings
US4310390A (en) * 1977-08-10 1982-01-12 Lockheed Corporation Protective coating process for aluminum and aluminum alloys
US4264278A (en) * 1977-10-31 1981-04-28 Oscar Weingart Blade or spar
US4298404A (en) * 1979-09-06 1981-11-03 Richardson Chemical Company Chromium-free or low-chromium metal surface passivation
CA1228000A (en) * 1981-04-16 1987-10-13 David E. Crotty Chromium appearance passivate solution and process
US4359347A (en) * 1981-04-16 1982-11-16 Occidental Chemical Corporation Chromium-free passivate solution and process
US4349392A (en) * 1981-05-20 1982-09-14 Occidental Chemical Corporation Trivalent chromium passivate solution and process
AU572825B2 (en) * 1983-03-03 1988-05-19 Fmc Corporation (Uk) Limited Inhibition of corrosion and scale formation of metal surfaces
EP0182306B1 (en) * 1984-11-17 1991-07-24 Daikin Industries, Limited Etchant composition
JPS61231188A (ja) * 1985-04-04 1986-10-15 Nippon Paint Co Ltd アルミニウム表面洗浄剤の管理方法
US4878963A (en) * 1986-09-18 1989-11-07 Sanchem, Inc. Corrosion resistant aluminum coating composition
US4755224A (en) * 1986-09-18 1988-07-05 Sanchem, Inc. Corrosion resistant aluminum coating composition
CA1292155C (en) * 1987-03-03 1991-11-19 Lance Wilson Method of forming a corrosion resistant coating
US5030323A (en) * 1987-06-01 1991-07-09 Henkel Corporation Surface conditioner for formed metal surfaces
EP0331284B1 (en) * 1988-02-03 1992-12-09 The British Petroleum Company p.l.c. A process for the treatment of a metal oxdie layer, a process for bonding a metal object comprising a metal oxide layer and structure produced therefrom
US4921552A (en) * 1988-05-03 1990-05-01 Betz Laboratories, Inc. Composition and method for non-chromate coating of aluminum
GB8825482D0 (en) * 1988-11-01 1988-12-07 British Petroleum Co Plc Surface treatment of metals
US4883541A (en) * 1989-01-17 1989-11-28 Martin Marietta Corporation Nonchromate deoxidizer for aluminum alloys
US4988396A (en) * 1989-04-26 1991-01-29 Sanchem, Inc. Corrosion resistant aluminum coating composition
US5194138A (en) * 1990-07-20 1993-03-16 The University Of Southern California Method for creating a corrosion-resistant aluminum surface
US5118356A (en) * 1990-11-19 1992-06-02 Eastman Kodak Company Process for cleaning a photographic processing device
US5198141A (en) * 1990-11-19 1993-03-30 Eastman Kodak Company Process for cleaning a photographic process device
ES2104655T3 (es) * 1990-11-30 1997-10-16 Boeing Co Revestimiento de conversion de cobalto exento de cromato.
US5221371A (en) * 1991-09-03 1993-06-22 Lockheed Corporation Non-toxic corrosion resistant conversion coating for aluminum and aluminum alloys and the process for making the same
AU653251B2 (en) * 1991-09-10 1994-09-22 Gibson Chemetall Pty Ltd Improved coating solution
US5166223A (en) * 1991-09-20 1992-11-24 Air Products And Chemicals, Inc. Hydroxyl group-containing amine-boron adducts are reduced odor catalyst compositions for the production of polyurethanes
US5118138A (en) * 1991-09-25 1992-06-02 Brotz Gregory R Self-illuminating book
US5192374A (en) * 1991-09-27 1993-03-09 Hughes Aircraft Company Chromium-free method and composition to protect aluminum
DE4243214A1 (de) * 1992-12-19 1994-06-23 Metallgesellschaft Ag Verfahren zur Erzeugung von Phosphatüberzügen
US5362335A (en) * 1993-03-25 1994-11-08 General Motors Corporation Rare earth coating process for aluminum alloys
US5356492A (en) * 1993-04-30 1994-10-18 Locheed Corporation Non-toxic corrosion resistant conversion process coating for aluminum and aluminum alloys
AU7110494A (en) * 1993-06-18 1995-01-17 Rexham Graphics Inc. Ink jet receiver sheet
NZ273541A (en) * 1993-09-13 1997-11-24 Commw Scient Ind Res Org Cleaning metal surfaces by treatment with alkaline cleaning solution and then with rare earth ion-containing, acidic solution; metal surfaces coated with rare earth (compounds)
AUPM621194A0 (en) * 1994-06-10 1994-07-07 Commonwealth Scientific And Industrial Research Organisation Conversion coating and process for its formation
GB9420295D0 (en) * 1994-10-07 1994-11-23 Lu Yucheng Method of increasing corrosion resistance of steels by treatment with cerium

Also Published As

Publication number Publication date
NO965256L (no) 1997-02-07
EP0769080A4 (en) 1997-09-03
NO965256D0 (no) 1996-12-09
AUPM621194A0 (en) 1994-07-07
EP0769080A1 (en) 1997-04-23
AU2664995A (en) 1996-01-05
PL317482A1 (en) 1997-04-14
AU683388B2 (en) 1997-11-06
EP0769080B1 (en) 2000-09-20
ATE196514T1 (de) 2000-10-15
KR970704070A (ko) 1997-08-09
CA2192449C (en) 2001-01-16
WO1995034693A1 (en) 1995-12-21
DE69518923T2 (de) 2001-03-29
CA2192449A1 (en) 1995-12-21
CZ359896A3 (en) 1997-06-11
JPH10501303A (ja) 1998-02-03
NO315569B1 (no) 2003-09-22
US6022425A (en) 2000-02-08
DE69518923D1 (de) 2000-10-26
JP3963944B2 (ja) 2007-08-22

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