WO2002038829A1 - Passivierungsverfahren - Google Patents
Passivierungsverfahren Download PDFInfo
- Publication number
- WO2002038829A1 WO2002038829A1 PCT/EP2001/012866 EP0112866W WO0238829A1 WO 2002038829 A1 WO2002038829 A1 WO 2002038829A1 EP 0112866 W EP0112866 W EP 0112866W WO 0238829 A1 WO0238829 A1 WO 0238829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- passivation
- chromium
- layer
- concentration
- passivated layer
- Prior art date
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
- C23C22/53—Treatment of zinc 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
- C23C22/06—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
- C23C22/46—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 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
- 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
Definitions
- the invention relates to a method for passivating zinc and zinc alloy layers and cadmium and cadmium alloy layers and claims the priority of German patent application 100 55 215.3, to which reference is made in terms of content.
- a system with good corrosion protection properties is a galvanically applied zinc-nickel alloy, which is then chromated and can also be treated with an organic or inorganic layer. Good corrosion resistance is achieved using chromium (VI) to passivate the zinc / nickel layer.
- VI chromium
- the object of the present invention is to provide a method for passivation, which allows further improved corrosion protection properties, and a corresponding coating system.
- the invention is based on the knowledge that the abandonment of the desire for a compact conversion layer, and thus the striving for a porous conversion layer, leads to improved end products if the porosity is used for the connection with at least one further layer.
- the invention can be implemented by passivation with a chromium (III) and a less stable complexing agent - preferably a di- or tricarboxylic acid - such as oxalic acid-containing passivation solution using cobalt.
- cobalt concentration of more than 30 g / l, preferably from 70 g / l to 100 g / l, in particular, about 90 g / l (concentrate - 12%), surprising corrosion protection values from 240 h to the first attack according to DIN 50961 im Salt spray cabinet according to DIN 50021 SS reached in production.
- the process is preferably carried out at a temperature of up to 55 ° C. and a pH of 0.5 to 5.5.
- the passivation is preferably carried out at pH 4. Particularly good results can be achieved with a sulfate-free solution. This is based on the knowledge that the use of sulfate leads to a disruption of the catalytic reaction and hinders the build-up of a corrosion-protecting chromium layer.
- the passivated layer is aftertreated with an organic or inorganic coating that penetrates into the porous conversion layer.
- An Aquares TM layer from Enthone-OMI GmbH, Neuss is preferably applied to the passivation layer. Particularly good corrosion protection can be achieved with a double Aquares layer. Surprisingly, the Aquares layer in the SEM is no longer detectable in some variants of the invention.
- the corrosion protection properties and the chemical resistance can be further improved by a top coat containing a dry lubricant. According to the invention, this also forms a special bond with the porous conversion layer. This allows the desired friction and flow values to be achieved at the same time.
- the combination of the dry lubricant Molykote®D-7100 from Dow Corning with the passivated zinc-nickel alloy according to the invention has surprising properties. Compared to known coating systems, this system is particularly resistant to chemicals and is insensitive to rim cleaners. It is therefore particularly suitable for wheel bolts. At the same time, the combination according to the invention is surprisingly insensitive to temperature.
- This dry lubricant layer is preferably applied to a double Aquares layer.
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)
- Other Surface Treatments For Metallic Materials (AREA)
- Formation Of Insulating Films (AREA)
- Chemically Coating (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SK544-2003A SK5442003A3 (en) | 2000-11-07 | 2001-11-07 | Passivation method |
US10/416,087 US20040011431A1 (en) | 2000-11-07 | 2001-11-07 | Passivation method |
AU2002221819A AU2002221819A1 (en) | 2000-11-07 | 2001-11-07 | Passivation method |
BR0115161-4A BR0115161A (pt) | 2000-11-07 | 2001-11-07 | Método para apassivação |
CA002428138A CA2428138A1 (en) | 2000-11-07 | 2001-11-07 | Passivation method |
JP2002541141A JP2004513240A (ja) | 2000-11-07 | 2001-11-07 | 不動態化方法 |
EP01993716A EP1346081A1 (de) | 2000-11-07 | 2001-11-07 | Passivierungsverfahren |
MXPA03004019A MXPA03004019A (es) | 2000-11-07 | 2001-11-07 | Metodo de pasivacion. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10055215.3 | 2000-11-07 | ||
DE10055215A DE10055215A1 (de) | 2000-11-07 | 2000-11-07 | Passivierungsverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002038829A1 true WO2002038829A1 (de) | 2002-05-16 |
Family
ID=7662484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/012866 WO2002038829A1 (de) | 2000-11-07 | 2001-11-07 | Passivierungsverfahren |
Country Status (12)
Country | Link |
---|---|
US (1) | US20040011431A1 (de) |
EP (1) | EP1346081A1 (de) |
JP (1) | JP2004513240A (de) |
CN (1) | CN1478155A (de) |
AU (1) | AU2002221819A1 (de) |
BR (1) | BR0115161A (de) |
CA (1) | CA2428138A1 (de) |
CZ (1) | CZ20031237A3 (de) |
DE (1) | DE10055215A1 (de) |
MX (1) | MXPA03004019A (de) |
SK (1) | SK5442003A3 (de) |
WO (1) | WO2002038829A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3332373B1 (ja) † | 2001-11-30 | 2002-10-07 | ディップソール株式会社 | 亜鉛及び亜鉛合金めっき上に六価クロムフリー防錆皮膜を形成するための処理溶液、六価クロムフリー防錆皮膜及びその形成方法。 |
CN1307323C (zh) * | 2004-06-14 | 2007-03-28 | 广州市集胜化工有限公司 | 镀锌用三价铬彩虹色钝化剂及其制造方法 |
EP1677371A1 (de) * | 2004-12-30 | 2006-07-05 | STMicroelectronics S.r.l. | Zweiteiliger Widerstandsheizer für Phasenwechselspeicher und Herstellungsmethode |
US7276424B2 (en) * | 2005-06-29 | 2007-10-02 | Hewlett-Packard Development Company, L.P. | Fabrication of aligned nanowire lattices |
JP4993959B2 (ja) * | 2006-07-10 | 2012-08-08 | 日本化学工業株式会社 | 有機酸クロム(iii)水溶液及びその製造方法 |
DE102016005656A1 (de) | 2016-05-11 | 2017-11-16 | Surtec International Gmbh | Konversionsschichten für metallische Oberflächen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2097024A (en) * | 1981-04-16 | 1982-10-27 | Hooker Chemicals Plastics Corp | Treating metal surfaces to improve corrosion resistance |
US4367099A (en) * | 1981-06-15 | 1983-01-04 | Occidental Chemical Corporation | Trivalent chromium passivate process |
EP1028177A1 (de) * | 1999-02-09 | 2000-08-16 | Walter Hillebrand Gmbh & Co, KG | Passivierungsverfahren |
Family Cites Families (9)
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 |
US4359345A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process |
US4349392A (en) * | 1981-05-20 | 1982-09-14 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process |
US4359346A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process for yellow passivate film |
US4359348A (en) * | 1981-06-17 | 1982-11-16 | Occidental Chemical Corporation | Stabilized trivalent chromium passivate composition and process |
US4359347A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Chromium-free passivate solution and process |
FR2600072B1 (fr) * | 1986-06-13 | 1988-10-21 | Dacral Sa | Composition de revetement anticorrosion a stabilite amelioree, et substrat revetu |
US4971635A (en) * | 1987-02-06 | 1990-11-20 | Guhde Donald J | Low-cure coating composition |
US5368655A (en) * | 1992-10-23 | 1994-11-29 | Alchem Corp. | Process for chromating surfaces of zinc, cadmium and alloys thereof |
-
2000
- 2000-11-07 DE DE10055215A patent/DE10055215A1/de not_active Withdrawn
-
2001
- 2001-11-07 CN CNA018197477A patent/CN1478155A/zh active Pending
- 2001-11-07 MX MXPA03004019A patent/MXPA03004019A/es unknown
- 2001-11-07 US US10/416,087 patent/US20040011431A1/en not_active Abandoned
- 2001-11-07 SK SK544-2003A patent/SK5442003A3/sk unknown
- 2001-11-07 JP JP2002541141A patent/JP2004513240A/ja not_active Withdrawn
- 2001-11-07 BR BR0115161-4A patent/BR0115161A/pt not_active Application Discontinuation
- 2001-11-07 EP EP01993716A patent/EP1346081A1/de not_active Withdrawn
- 2001-11-07 CA CA002428138A patent/CA2428138A1/en not_active Abandoned
- 2001-11-07 AU AU2002221819A patent/AU2002221819A1/en not_active Abandoned
- 2001-11-07 WO PCT/EP2001/012866 patent/WO2002038829A1/de not_active Application Discontinuation
- 2001-11-07 CZ CZ20031237A patent/CZ20031237A3/cs unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2097024A (en) * | 1981-04-16 | 1982-10-27 | Hooker Chemicals Plastics Corp | Treating metal surfaces to improve corrosion resistance |
US4367099A (en) * | 1981-06-15 | 1983-01-04 | Occidental Chemical Corporation | Trivalent chromium passivate process |
EP1028177A1 (de) * | 1999-02-09 | 2000-08-16 | Walter Hillebrand Gmbh & Co, KG | Passivierungsverfahren |
Also Published As
Publication number | Publication date |
---|---|
JP2004513240A (ja) | 2004-04-30 |
CZ20031237A3 (cs) | 2003-10-15 |
CA2428138A1 (en) | 2002-05-16 |
US20040011431A1 (en) | 2004-01-22 |
MXPA03004019A (es) | 2004-02-12 |
CN1478155A (zh) | 2004-02-25 |
EP1346081A1 (de) | 2003-09-24 |
DE10055215A1 (de) | 2002-05-08 |
BR0115161A (pt) | 2003-10-21 |
SK5442003A3 (en) | 2003-10-07 |
AU2002221819A1 (en) | 2002-05-21 |
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