EP0337411A3 - Process for preparing an acidic passivating bath for zinc, zinc alloys an cadmium surfaces, containing chromium iii and fluoride - Google Patents

Process for preparing an acidic passivating bath for zinc, zinc alloys an cadmium surfaces, containing chromium iii and fluoride Download PDF

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Publication number
EP0337411A3
EP0337411A3 EP89106447A EP89106447A EP0337411A3 EP 0337411 A3 EP0337411 A3 EP 0337411A3 EP 89106447 A EP89106447 A EP 89106447A EP 89106447 A EP89106447 A EP 89106447A EP 0337411 A3 EP0337411 A3 EP 0337411A3
Authority
EP
European Patent Office
Prior art keywords
zinc
fluoride
preparing
iii
containing chromium
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
EP89106447A
Other languages
German (de)
Other versions
EP0337411B1 (en
EP0337411A2 (en
Inventor
Klaus-Peter Klos
Karl-Heinz Lindemann
Willi Birnstiel
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.)
Surtec GmbH
Original Assignee
Unilever PLC
Unilever NV
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 Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to DE8916143U priority Critical patent/DE8916143U1/en
Priority to AT89106447T priority patent/ATE97700T1/en
Publication of EP0337411A2 publication Critical patent/EP0337411A2/en
Publication of EP0337411A3 publication Critical patent/EP0337411A3/en
Application granted granted Critical
Publication of EP0337411B1 publication Critical patent/EP0337411B1/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
    • C23C22/34—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 fluorides or complex fluorides
    • 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
    • C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
    • C23C2222/10—Use of solutions containing trivalent chromium but free of hexavalent chromium

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)
  • Chemically Coating (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Glass Compositions (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

An acidic chromium(III)-containing and fluoride-containing passivating bath for surfaces of zinc, zinc alloys and cadmium is prepared by mixing 20-200 g/l of a soluble chromium(III) compound, 20 to 600 g/l of a soluble nitrate, 5 to 100 g/l of a fluoride and of a sulphate, phosphate, chloride, bromide, fluoride or iodide anion, adding hydrochloric or nitric acid to a pH of 1.8 to 2.2 and heating to above 60 DEG C or adding a catalyst, the amount of nitrate being greater than the chromium(III) concentration. It contains one or more complex(es) of the formula (1): <IMAGE> (x = 1 to 3, n = valency of A and A = nitrate, sulphate, phosphate, chloride, bromide, fluoride or iodide).
EP89106447A 1988-04-12 1989-04-11 Process for preparing an acidic passivating bath for zinc, zinc alloys an cadmium surfaces, containing chromium III and fluoride Expired - Lifetime EP0337411B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8916143U DE8916143U1 (en) 1988-04-12 1989-04-11 Acidic chromium (III) -containing and fluoride-containing passivation bath concentrate for surfaces made of zinc, zinc alloys and cadmium
AT89106447T ATE97700T1 (en) 1988-04-12 1989-04-11 PROCESS FOR THE MANUFACTURE OF AN ACIDIC CHROMIUM(III) AND FLUORIDE PASSIVATION BATH FOR ZINC, ZINC ALLOYS AND CADMIUM SURFACES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3812076 1988-04-12
DE3812076A DE3812076A1 (en) 1988-04-12 1988-04-12 ACID CHROMIUM (III) AND FLUORIDE-BASED PASSIVATION BATH FOR SURFACES OF ZINC, ZINC ALLOYS AND CADMIUM

Publications (3)

Publication Number Publication Date
EP0337411A2 EP0337411A2 (en) 1989-10-18
EP0337411A3 true EP0337411A3 (en) 1990-05-09
EP0337411B1 EP0337411B1 (en) 1993-11-24

Family

ID=6351774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106447A Expired - Lifetime EP0337411B1 (en) 1988-04-12 1989-04-11 Process for preparing an acidic passivating bath for zinc, zinc alloys an cadmium surfaces, containing chromium III and fluoride

Country Status (5)

Country Link
EP (1) EP0337411B1 (en)
AT (1) ATE97700T1 (en)
DD (1) DD280557A5 (en)
DE (2) DE3812076A1 (en)
YU (1) YU71689A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135524C2 (en) * 1991-10-28 1995-01-26 Gc Galvano Consult Gmbh Method and means for chromating surfaces made of zinc or cadmium or alloys thereof
US7314671B1 (en) 1996-04-19 2008-01-01 Surtec International Gmbh Chromium(VI)-free conversion layer and method for producing it
DE19615664A1 (en) 1996-04-19 1997-10-23 Surtec Produkte Und Systeme Fu Chromium (VI) free chromate layer and process for its production
JP4145016B2 (en) * 2001-01-31 2008-09-03 日本パーカライジング株式会社 Rust preventive agent for galvanized steel sheet and galvanized steel sheet
US6761774B2 (en) * 2001-05-24 2004-07-13 Basf Corporation Composition and method for the in situ removal scale from a substrate
US7101469B2 (en) * 2004-11-10 2006-09-05 Atotech Deutschland Gmbh Metal pieces and articles having improved corrosion resistance
DE102009042861B4 (en) 2009-09-24 2020-08-20 AnJo Oberflächentechnik GmbH Composition, application solution and process for passivation of zinc and its alloys
WO2011127473A1 (en) * 2010-04-09 2011-10-13 Enthone Inc. Passivation treatment of zinc-based coatings
DE102011013319B4 (en) 2011-03-07 2018-06-14 AnJo Oberflächentechnik GmbH Composition and application solution for passivating zinc and its alloys
EP2708620A1 (en) 2012-09-12 2014-03-19 Anjo Oberflächentechnik GmbH Composition and solution to use for passivating zinc and its alloys
CN102912337B (en) * 2012-10-30 2015-01-21 四川华丰企业集团有限公司 Process for producing green passivation coating of cadmium-plated workpiece
CN103215581B (en) * 2013-03-25 2015-06-03 沈阳帕卡濑精有限总公司 Passivation enclosing integrated trivalent chromium passivating agent for fast processing steel plate surface
CN103215580B (en) * 2013-03-25 2016-01-27 沈阳帕卡濑精有限总公司 There is for surface of steel plate fast filming the trivalent chromium passivator of high anti-corrosion
ES2732264T3 (en) * 2014-02-13 2019-11-21 Doerken Ewald Ag Procedure for the preparation of a substrate provided with a cobalt-free and chromium-VI free passivation
NL2017398B1 (en) * 2016-08-31 2018-03-08 Ad Productions B V Method of treating metal surfaces with an aqueous composition and aqueous composition
US10400338B2 (en) 2017-05-12 2019-09-03 Chemeon Surface Technology, Llc pH stable trivalent chromium coating solutions

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2166737A1 (en) * 1970-04-02 1975-06-05 Du Pont Complex chromium salt metal surface primer in aqs soln
US4171231A (en) * 1978-04-27 1979-10-16 R. O. Hull & Company, Inc. Coating solutions of trivalent chromium for coating zinc surfaces
US4263059A (en) * 1979-12-21 1981-04-21 Rohco, Inc. Coating solutions of trivalent chromium for coating zinc and cadmium surfaces
GB2059445A (en) * 1979-09-06 1981-04-23 Richardson Chemical Co Chromium-free or low-chromium metal surface passivation
GB2097024A (en) * 1981-04-16 1982-10-27 Hooker Chemicals Plastics Corp Treating metal surfaces to improve corrosion resistance
US4578122A (en) * 1984-11-14 1986-03-25 Omi International Corporation Non-peroxide trivalent chromium passivate composition and process
US4705576A (en) * 1986-08-27 1987-11-10 Elektro-Brite Gmbh Acidic chromium containing coating solution for zinc or cadmium surfaces

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384902A (en) * 1981-06-15 1983-05-24 Occidental Chemical Corporation Trivalent chromium passivate composition and process
US4359347A (en) * 1981-04-16 1982-11-16 Occidental Chemical Corporation Chromium-free passivate solution and process
US4367099A (en) * 1981-06-15 1983-01-04 Occidental Chemical Corporation Trivalent chromium passivate process
US4349392A (en) * 1981-05-20 1982-09-14 Occidental Chemical Corporation Trivalent chromium passivate solution and process
US4539348A (en) * 1982-12-16 1985-09-03 Celanese Corporation Water-swellable crosslinked polymeric microgel particles and aqueous dispersions of organic film-forming resins containing the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2166737A1 (en) * 1970-04-02 1975-06-05 Du Pont Complex chromium salt metal surface primer in aqs soln
US4171231A (en) * 1978-04-27 1979-10-16 R. O. Hull & Company, Inc. Coating solutions of trivalent chromium for coating zinc surfaces
GB2059445A (en) * 1979-09-06 1981-04-23 Richardson Chemical Co Chromium-free or low-chromium metal surface passivation
US4263059A (en) * 1979-12-21 1981-04-21 Rohco, Inc. Coating solutions of trivalent chromium for coating zinc and cadmium surfaces
GB2097024A (en) * 1981-04-16 1982-10-27 Hooker Chemicals Plastics Corp Treating metal surfaces to improve corrosion resistance
US4578122A (en) * 1984-11-14 1986-03-25 Omi International Corporation Non-peroxide trivalent chromium passivate composition and process
US4705576A (en) * 1986-08-27 1987-11-10 Elektro-Brite Gmbh Acidic chromium containing coating solution for zinc or cadmium surfaces

Also Published As

Publication number Publication date
YU71689A (en) 1990-12-31
EP0337411B1 (en) 1993-11-24
DE3812076C2 (en) 1990-09-13
ATE97700T1 (en) 1993-12-15
DE3812076A1 (en) 1989-10-26
DE58906227D1 (en) 1994-01-05
EP0337411A2 (en) 1989-10-18
DD280557A5 (en) 1990-07-11

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