EP0587543A3 - Process for improving the corrosion resistance of copper and copper alloy radiators, and the radiators thereby obtainable. - Google Patents

Process for improving the corrosion resistance of copper and copper alloy radiators, and the radiators thereby obtainable. Download PDF

Info

Publication number
EP0587543A3
EP0587543A3 EP93830364A EP93830364A EP0587543A3 EP 0587543 A3 EP0587543 A3 EP 0587543A3 EP 93830364 A EP93830364 A EP 93830364A EP 93830364 A EP93830364 A EP 93830364A EP 0587543 A3 EP0587543 A3 EP 0587543A3
Authority
EP
European Patent Office
Prior art keywords
radiators
copper
obtainable
improving
corrosion resistance
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.)
Granted
Application number
EP93830364A
Other languages
German (de)
French (fr)
Other versions
EP0587543B1 (en
EP0587543A2 (en
Inventor
Mario Cosso
Luigi Ganzaroli
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.)
Valeo Sistemi Termici SpA
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0587543A2 publication Critical patent/EP0587543A2/en
Publication of EP0587543A3 publication Critical patent/EP0587543A3/en
Application granted granted Critical
Publication of EP0587543B1 publication Critical patent/EP0587543B1/en
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
    • C23C22/24—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 containing hexavalent chromium compounds
    • C23C22/33—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 containing hexavalent chromium compounds containing also phosphates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2350/00—Pretreatment of the substrate
    • B05D2350/10—Phosphatation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
EP93830364A 1992-09-08 1993-09-08 Process for improving the corrosion resistance of copper and copper alloy radiators, and the radiators thereby obtainable Expired - Lifetime EP0587543B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM920655A IT1263235B (en) 1992-09-08 1992-09-08 PROCEDURE TO IMPROVE THE CORROSION RESISTANCE OF COPPER AND COPPER ALLOY RADIATORS, AND SO OBTAINABLE RADIATORS
ITRM920655 1992-09-08

Publications (3)

Publication Number Publication Date
EP0587543A2 EP0587543A2 (en) 1994-03-16
EP0587543A3 true EP0587543A3 (en) 1995-07-26
EP0587543B1 EP0587543B1 (en) 1997-01-08

Family

ID=11401180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93830364A Expired - Lifetime EP0587543B1 (en) 1992-09-08 1993-09-08 Process for improving the corrosion resistance of copper and copper alloy radiators, and the radiators thereby obtainable

Country Status (7)

Country Link
EP (1) EP0587543B1 (en)
JP (1) JPH08152293A (en)
BR (1) BR9303711A (en)
DE (1) DE69307232T2 (en)
ES (1) ES2098717T3 (en)
IT (1) IT1263235B (en)
MX (1) MX9305490A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9409811D0 (en) * 1994-05-17 1994-07-06 Imi Yorkshire Fittings Improvements in copper alloy water fittings
US6699529B2 (en) * 2002-05-20 2004-03-02 Engelhard Corporation Method for coating vehicular radiators with ozone depleting slurry catalyst
JP4463278B2 (en) * 2004-09-28 2010-05-19 株式会社早川バルブ製作所 Hexavalent chromium-free surface treatment method and hexavalent chromium-free lead-containing copper-based metal material
JP5155850B2 (en) * 2006-03-03 2013-03-06 ディップソール株式会社 Treatment aqueous solution for forming black trivalent chromium conversion coating on zinc or zinc alloy and method for forming black trivalent chromium conversion coating
CN111118488B (en) * 2020-01-07 2022-02-18 佛山市顺德区澳宁化工有限公司 Copper material anticorrosion passivation method and preparation method of passivation solution used in method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139845A2 (en) * 1983-10-17 1985-05-08 Amchem Products, Inc. Coating composition
EP0207484A2 (en) * 1985-07-01 1987-01-07 Olin Corporation Copper stainproofing technique
US5039360A (en) * 1986-10-21 1991-08-13 Procoat S.A. Method for coating hot metal surfaces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139845A2 (en) * 1983-10-17 1985-05-08 Amchem Products, Inc. Coating composition
EP0207484A2 (en) * 1985-07-01 1987-01-07 Olin Corporation Copper stainproofing technique
US5039360A (en) * 1986-10-21 1991-08-13 Procoat S.A. Method for coating hot metal surfaces

Also Published As

Publication number Publication date
DE69307232T2 (en) 1997-07-03
EP0587543B1 (en) 1997-01-08
ITRM920655A1 (en) 1994-03-08
ITRM920655A0 (en) 1992-09-08
BR9303711A (en) 1994-04-19
IT1263235B (en) 1996-08-05
DE69307232D1 (en) 1997-02-20
ES2098717T3 (en) 1997-05-01
JPH08152293A (en) 1996-06-11
MX9305490A (en) 1994-05-31
EP0587543A2 (en) 1994-03-16

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