US20040011431A1 - Passivation method - Google Patents
Passivation method Download PDFInfo
- Publication number
- US20040011431A1 US20040011431A1 US10/416,087 US41608703A US2004011431A1 US 20040011431 A1 US20040011431 A1 US 20040011431A1 US 41608703 A US41608703 A US 41608703A US 2004011431 A1 US2004011431 A1 US 2004011431A1
- Authority
- US
- United States
- Prior art keywords
- passivation
- chrome
- zinc
- layer
- passivated layer
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002161 passivation Methods 0.000 title claims abstract description 20
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 17
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000008139 complexing agent Substances 0.000 claims abstract description 3
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 3
- 239000011701 zinc Substances 0.000 claims abstract description 3
- 229910045601 alloy Inorganic materials 0.000 claims abstract 2
- 239000000956 alloy Substances 0.000 claims abstract 2
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 2
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- SYHPANJAVIEQQL-UHFFFAOYSA-N dicarboxy carbonate Chemical compound OC(=O)OC(=O)OC(O)=O SYHPANJAVIEQQL-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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 refers to a method to passivate zinc and zinc alloy layers as well as cadmium and cadmium alloy layers and claims the priority of German patent application 100 55 215.3, which is referred to for purpose of disclosure.
- chrome(VI) compounds contrasts their good anticorrosive qualities. Accordingly, it has been attempted for a longer period time to establish chrome(VI) free systems providing a sufficient corrosion resistance.
- the invention has the object to provide both a passivation method with further improved anticorrosive protection characteristics and a respective coating system.
- the invention is based on the finding, that turning away from the efforts of focussing on a compact conversion layer and thus aiming to produce a porous conversion layer leads to improved final products when the porosity is used for binding to at least one further layer.
- the invention can be realized by using cobalt in a passivation solution containing chrome(III) and a weaker complexing agent—preferably a di- or tri-carbonic acid like oxalic acid.
- cobalt concentration greater than 30 ⁇ l, preferably a concentration between 70 g/l and 100 g/l, In particular about 90 g/l, (concentrate—12%) already surprising corrosion protection values of 240 h until onset of primary corrosion according to DIN 50961 in the salt spray test according to DIN 50021 SS are achieved in production.
- the method Is preferably carried out at temperatures up to 55° C. and pH levels of 0,5 to 5,5.
- the passivation is carried out at pH 4.
- Particularly good results can be achieved with a sulfate free solution. This is based on the idea that the use of sulfate leads to a disturbance of the catalytic reaction and interference with the development of an anticorrosive chrome layer.
- the passivated layer is re-treated with an organic or inorganic coating which penetrates into the porous conversion layer.
- an organic or inorganic coating which penetrates into the porous conversion layer.
- a coat of AquaresTM (Enthone-OMI GmbH, Neuss) is applied to the passivation layer.
- a particularly good corrosion control can be achieved by a double Aquares layer.
- the Aquares layer surprisingly is no longer traceable in the REM in some variants of the invention.
- this dry lubricant layer is applied onto 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)
- Formation Of Insulating Films (AREA)
- Chemically Coating (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Lubricants (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10055215A DE10055215A1 (de) | 2000-11-07 | 2000-11-07 | Passivierungsverfahren |
| DE10055215.3 | 2000-11-07 | ||
| PCT/EP2001/012866 WO2002038829A1 (de) | 2000-11-07 | 2001-11-07 | Passivierungsverfahren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20040011431A1 true US20040011431A1 (en) | 2004-01-22 |
Family
ID=7662484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/416,087 Abandoned US20040011431A1 (en) | 2000-11-07 | 2001-11-07 | Passivation method |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20040011431A1 (zh) |
| EP (1) | EP1346081A1 (zh) |
| JP (1) | JP2004513240A (zh) |
| CN (1) | CN1478155A (zh) |
| AU (1) | AU2002221819A1 (zh) |
| BR (1) | BR0115161A (zh) |
| CA (1) | CA2428138A1 (zh) |
| CZ (1) | CZ20031237A3 (zh) |
| DE (1) | DE10055215A1 (zh) |
| MX (1) | MXPA03004019A (zh) |
| SK (1) | SK5442003A3 (zh) |
| WO (1) | WO2002038829A1 (zh) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070004222A1 (en) * | 2005-06-29 | 2007-01-04 | Qingqiao Wei | Fabrication of aligned nanowire lattices |
| US20090194001A1 (en) * | 2006-07-10 | 2009-08-06 | Nippon Chemical Industrial Co., Ltd. | Organic acid chromium (iii) salt aqueous solution and process of producing the same |
| US20180138406A1 (en) * | 2004-12-30 | 2018-05-17 | Micron Technology, Inc. | Dual resistive-material regions for phase change memory devices |
Families Citing this family (3)
| 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 |
| DE102016005656A1 (de) | 2016-05-11 | 2017-11-16 | Surtec International Gmbh | Konversionsschichten für metallische Oberflächen |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4349392A (en) * | 1981-05-20 | 1982-09-14 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process |
| US4359348A (en) * | 1981-06-17 | 1982-11-16 | Occidental Chemical Corporation | Stabilized trivalent chromium passivate composition and process |
| US4359346A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process for yellow passivate film |
| US4359345A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Trivalent chromium passivate solution 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 |
| US4384902A (en) * | 1981-06-15 | 1983-05-24 | Occidental Chemical Corporation | Trivalent chromium passivate composition and process |
| US4971635A (en) * | 1987-02-06 | 1990-11-20 | Guhde Donald J | Low-cure coating composition |
| USRE34707E (en) * | 1986-06-13 | 1994-08-30 | Dacral S.A. | Anticorrosion coating composition with improved stability, and coated substrate |
| US5368655A (en) * | 1992-10-23 | 1994-11-29 | Alchem Corp. | Process for chromating surfaces of zinc, cadmium and alloys thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1228000A (en) * | 1981-04-16 | 1987-10-13 | David E. Crotty | Chromium appearance passivate solution and process |
| DE19905134A1 (de) * | 1999-02-09 | 2000-09-28 | Hillebrand Walter Gmbh & Co Kg | Passivierungsverfahren |
-
2000
- 2000-11-07 DE DE10055215A patent/DE10055215A1/de not_active Withdrawn
-
2001
- 2001-11-07 SK SK544-2003A patent/SK5442003A3/sk unknown
- 2001-11-07 AU AU2002221819A patent/AU2002221819A1/en not_active Abandoned
- 2001-11-07 CZ CZ20031237A patent/CZ20031237A3/cs unknown
- 2001-11-07 WO PCT/EP2001/012866 patent/WO2002038829A1/de not_active Ceased
- 2001-11-07 JP JP2002541141A patent/JP2004513240A/ja not_active Withdrawn
- 2001-11-07 CN CNA018197477A patent/CN1478155A/zh active Pending
- 2001-11-07 EP EP01993716A patent/EP1346081A1/de not_active Withdrawn
- 2001-11-07 MX MXPA03004019A patent/MXPA03004019A/es unknown
- 2001-11-07 CA CA002428138A patent/CA2428138A1/en not_active Abandoned
- 2001-11-07 US US10/416,087 patent/US20040011431A1/en not_active Abandoned
- 2001-11-07 BR BR0115161-4A patent/BR0115161A/pt not_active Application Discontinuation
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4359346A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Trivalent chromium passivate solution and process for yellow passivate film |
| US4359345A (en) * | 1981-04-16 | 1982-11-16 | Occidental Chemical Corporation | Trivalent chromium 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 |
| US4367099A (en) * | 1981-06-15 | 1983-01-04 | Occidental Chemical Corporation | Trivalent chromium passivate process |
| US4384902A (en) * | 1981-06-15 | 1983-05-24 | Occidental Chemical Corporation | Trivalent chromium passivate composition and process |
| US4359348A (en) * | 1981-06-17 | 1982-11-16 | Occidental Chemical Corporation | Stabilized trivalent chromium passivate composition and process |
| USRE34707E (en) * | 1986-06-13 | 1994-08-30 | Dacral S.A. | Anticorrosion coating composition with improved stability, and coated substrate |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180138406A1 (en) * | 2004-12-30 | 2018-05-17 | Micron Technology, Inc. | Dual resistive-material regions for phase change memory devices |
| US20070004222A1 (en) * | 2005-06-29 | 2007-01-04 | Qingqiao Wei | Fabrication of aligned nanowire lattices |
| US20080009121A1 (en) * | 2005-06-29 | 2008-01-10 | Qingqiao Wei | Fabrication of Aligned Nanowire Lattices |
| US20090194001A1 (en) * | 2006-07-10 | 2009-08-06 | Nippon Chemical Industrial Co., Ltd. | Organic acid chromium (iii) salt aqueous solution and process of producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1346081A1 (de) | 2003-09-24 |
| CA2428138A1 (en) | 2002-05-16 |
| CZ20031237A3 (cs) | 2003-10-15 |
| DE10055215A1 (de) | 2002-05-08 |
| CN1478155A (zh) | 2004-02-25 |
| BR0115161A (pt) | 2003-10-21 |
| WO2002038829A1 (de) | 2002-05-16 |
| SK5442003A3 (en) | 2003-10-07 |
| MXPA03004019A (es) | 2004-02-12 |
| AU2002221819A1 (en) | 2002-05-21 |
| JP2004513240A (ja) | 2004-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: WALTER HILLEBRAND GMBH & CO. GALVANOTECHNIK, GERMA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HILLEBRAND, ERNST-WALTER;REEL/FRAME:014366/0783 Effective date: 20030527 |
|
| STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |