YU71689A - Process for obtaining acidic bath, which contains chromium-(iii) and fluoride, for passivating surfaces ofzinc and kadmium alloys - Google Patents

Process for obtaining acidic bath, which contains chromium-(iii) and fluoride, for passivating surfaces ofzinc and kadmium alloys

Info

Publication number
YU71689A
YU71689A YU00716/89A YU71689A YU71689A YU 71689 A YU71689 A YU 71689A YU 00716/89 A YU00716/89 A YU 00716/89A YU 71689 A YU71689 A YU 71689A YU 71689 A YU71689 A YU 71689A
Authority
YU
Yugoslavia
Prior art keywords
fluoride
iii
alloys
kadmium
ofzinc
Prior art date
Application number
YU00716/89A
Inventor
K P Klos
K H Lindemann
W Birnstiel
Original Assignee
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 Nv filed Critical Unilever Nv
Publication of YU71689A publication Critical patent/YU71689A/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
    • C23C22/34—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)
  • Electroplating And Plating Baths Therefor (AREA)
  • Glass Compositions (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).
YU00716/89A 1988-04-12 1989-04-10 Process for obtaining acidic bath, which contains chromium-(iii) and fluoride, for passivating surfaces ofzinc and kadmium alloys YU71689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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 (1)

Publication Number Publication Date
YU71689A true YU71689A (en) 1990-12-31

Family

ID=6351774

Family Applications (1)

Application Number Title Priority Date Filing Date
YU00716/89A YU71689A (en) 1988-04-12 1989-04-10 Process for obtaining acidic bath, which contains chromium-(iii) and fluoride, for passivating surfaces ofzinc and kadmium alloys

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)

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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
DE19615664A1 (en) * 1996-04-19 1997-10-23 Surtec Produkte Und Systeme Fu Chromium (VI) free chromate layer and process for its production
US7314671B1 (en) 1996-04-19 2008-01-01 Surtec International Gmbh Chromium(VI)-free conversion layer and method for producing it
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
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
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
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
JP7399080B2 (en) 2017-05-12 2023-12-15 ケメオン サーフェス テクノロジー， エルエルシー pH stable trivalent chromium coating liquid

Family Cites Families (12)

* 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
US4298404A (en) * 1979-09-06 1981-11-03 Richardson Chemical Company 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
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
CA1228000A (en) * 1981-04-16 1987-10-13 David E. Crotty Chromium appearance passivate solution and 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
US4578122A (en) * 1984-11-14 1986-03-25 Omi International Corporation Non-peroxide trivalent chromium passivate composition and process
NO168953C (en) * 1986-08-27 1992-04-22 Elektro Brite Gmbh ACID CHROME PASSIVATOR FOR ZINC OR CADMIUM SURFACES

Also Published As

Publication number Publication date
ATE97700T1 (en) 1993-12-15
EP0337411A3 (en) 1990-05-09
DE3812076A1 (en) 1989-10-26
DE58906227D1 (en) 1994-01-05
DE3812076C2 (en) 1990-09-13
EP0337411B1 (en) 1993-11-24
EP0337411A2 (en) 1989-10-18
DD280557A5 (en) 1990-07-11

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