WO2003097900A2 - Konversionsschicht für aus zink oder zinklegierungen bestehende untergründe - Google Patents
Konversionsschicht für aus zink oder zinklegierungen bestehende untergründe Download PDFInfo
- Publication number
- WO2003097900A2 WO2003097900A2 PCT/DE2003/001617 DE0301617W WO03097900A2 WO 2003097900 A2 WO2003097900 A2 WO 2003097900A2 DE 0301617 W DE0301617 W DE 0301617W WO 03097900 A2 WO03097900 A2 WO 03097900A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conversion layer
- organic
- zinc
- ions
- layer according
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
-
- 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
- C23C22/60—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 alkaline aqueous solutions with pH greater than 8
-
- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12729—Group IIA metal-base component
Definitions
- the present invention relates to a conversion layer for substrates consisting of zinc or zinc alloys, and the production and use thereof.
- Zinc-containing or galvanized metallic surfaces tend to form corrosive white rust under the influence of moisture, which is not desirable.
- Known methods for preventing or reducing are the application of conversion layers with Cr (i ⁇ ) or Cr (VI) in an acidic medium, the reduction of Cr (VI) with alkali sulfite in alkaline alkali silicate solution (MacDermid JS500 and JS2000 methods) and the sealing with silicate coatings with or without admixtures of organic polymers.
- EP 0 749 501 describes a process which uses a combination of dissolved inorganic silicate, a dissolved inorganic aluminate and a silyl-containing crosslinking agent.
- Cr (VT) offers better protection than Cr ( ⁇ i)
- Cr (NI) is particularly disadvantageous due to its classification in cancer class 1.
- the EU end-of-life car order which applies from July 1st, 2003, also makes the Amount of Cr (VI) per car limited to 2 grams. Because of these disadvantages, some automobile manufacturers want to do without Cr (VI) altogether.
- Cr (m) is classified as cancer class 2, but is accepted by industry as a replacement for Cr (VT).
- CrCDI) has the disadvantage, however, that when it is deposited from acidic media, known under the name Chromitmaschine® (DE 196 15 664 AI), the same corrosion-protecting properties as with Cr (VT) are not achieved.
- silicate coatings have the advantages of easy accessibility, the low price of their starting materials and the good quality Adhesion to metallic substrates.
- a disadvantage of the known silicate coatings is their water vapor permeability, so that the substrates quickly corrode without additions of the coatings (for example: zinc dust, Mo-containing pigments).
- Another disadvantage is the relatively high proportion of silicate, which leads to brittleness in the layer thicknesses used leads.
- the object of the present invention is to provide a conversion layer for substrates consisting of zinc or zinc alloys, this conversion layer should at least not have worse properties than the known conversion layers with regard to corrosion prevention, brittleness, the decorative effect and mechanical abrasion.
- This object is achieved according to the invention in that the conversion layer consists of at least one doped silicate layer which, by applying at least one silicate solution, additionally ions and / or ions complexed with at least one complexing agent from at least one subgroup element and / or from at least one lanthanide and / or contains aluminum and / or contains at least one organic polar compound.
- the conversion layer can be produced by applying the silicate solution by the known methods (for example by the immersion method, by rolling, by knife coating, by spraying, by spraying, etc.).
- silicate solutions examples include alkali water glasses and / or amino water glasses and / or organosiloxane-containing solutions, water being used as the solvent. Since the concentration to be used depends on the substrate to be coated and the additives used in the solution, the concentration and the type of Water glasses can be determined empirically by the person skilled in the art depending on the desired requirements without inventive intervention within the framework of the claimed teaching from the prior art. In a non-limiting manner and as the starting point for the empirical determination, the solution generally contains 1 to 10% by weight of the alkali / aqueous water glass.
- Ions and / or ions complexed with a complexing agent of the subgroup elements e.g. Fe, Cr, Mo, Ag, W, V, Ti, Y, Zr, Hf, etc.
- a complexing agent of the subgroup elements e.g. Fe, Cr, Mo, Ag, W, V, Ti, Y, Zr, Hf, etc.
- the lanthanides e.g. La, Ce.
- Ions and / or ions of aluminum complexed with at least one complexing agent are also suitable as additives for the silicate solution. Since the concentration and form of the additive to be used depends on the substrate to be coated, the silicate solution, the other additives used in the solution, etc.
- the concentration and form of an individual additive must also depend on the desired requirements can be determined empirically by the person skilled in the art without inventive intervention within the scope of the claimed teaching from the prior art.
- the ready-to-use solution contains approx. 0.01% by weight of the respective additive.
- the incorporation into the silicate solution can be carried out with the known methods, for example by stirring (as, for example, aqueous hydroxide suspension, form of a phosphate, complexed form, etc.) into a water glass solution, in the preparation of the water glass solution as a melt additive (eg in the form of a carbonate, etc. ) of water glass, etc.) happen.
- Organic silicate compounds and / or complexing agents e.g. a mono-, di-, polycarboxylic acid, an organic amine, an organic phosphate, an organic phosphonate, an organic sulfonate, a hydrazone, a mercaptan, a stearate, etc .
- additives serve, for example, as wetting agents, solubility modifiers, inhibitors, etc. and can be introduced into the silicate solution using the known processes (for example by direct stirring, by addition as a complex compound with the other additives, in the preparation of the water glass solution as a melt additive in the water glass), etc.).
- an organic polar compound can have several properties (for example wetting agents and complexing agents) and that the complexing agent can also have one can be inorganic compound.
- concentration and form to be used, as for the other additives must also be determined empirically for the individual case by the person skilled in the art for the same reasons, depending on the desired requirements without inventive step within the framework of the claimed teaching from the prior art.
- the ready-to-use solution generally contains about 0.01% by weight of organic compound / complexing agent.
- the invention can be further developed within the scope of the claimed teaching so that two or more additives of the silicate solution can be added in combination.
- the addition of Ag and one of the other subgroup elements such as Ce may be mentioned as a non-limiting example. It should be expressly pointed out that the individual properties of the additives cannot behave additively and can influence one another, which the person skilled in the art can determine empirically in individual cases, depending on the desired requirements, without inventive step within the claimed teaching of the prior art can.
- the conversion layers produced can be very thin, with no flaking visible when a sheet coated therewith is buckled,
- the conversion layers produced have no discoloration of the surface, e.g. with a "blue passivation",
- the conversion layer according to the invention can be more resistant to corrosion and abrasion
- Protective cover can be used for technical parts and / or for decorative purposes and is therefore of great economic interest.
- coated parts showed 0% white rust after 12 days.
- Ce (OH) 3 was precipitated from 50 mg of Ce 2 (SO 4 ) 3 with KOH to pH 8, washed twice with H 2 O and in each case centrifuged and 4 ml of H 2 O added. 15 ml of potassium water glass with a solids content of 36% by weight were added. The concentrate thus obtained was diluted 1 + 4.4 with water and applied to a zinc surface. In the corrosion test according to DIN 50017, coated parts showed 0% white rust after 12 days.
- phthalic acid 200 mg was successively mixed with 1 ml of ⁇ H 3 (25%) and 4 ml of H 2 O and 15 ml of water glass with a solids content of 36% by weight.
- the concentrate thus obtained was diluted 1 + 4.4 with water and applied to a zinc surface.
- coated parts showed ⁇ 2% white rust content after 12 days.
- adipic acid 200 mg was successively mixed with 1 ml of NH 3 (25%) and 4 ml of H 2 O and 15 ml of water glass with a solids content of 36% by weight.
- the concentrate thus obtained was diluted 1 + 4.4 with water and applied to a zinc surface.
- coated parts showed ⁇ 2% white rust content after 12 days.
- Hematite was stirred in water glass with a solids content of 36% by weight until the solution turned brownish.
- the concentrate thus obtained was decanted off and diluted 1 + 9 with water and applied to a zinc surface.
- coated parts showed ⁇ 4% white rust content after 12 days.
- coated parts showed ⁇ 2% white rust content after 12 days.
- Ce (IV) + Ag 50 mg Ce (SO) 2 was precipitated with KOH ad pH 8, washed twice with H 2 O and centrifuged in each case and 4 ml H 2 O were added. 15 ml of potassium water glass with a solids content of 36% by weight were added. For this, 1 ppm Ag (as Ag (OH) 2 ) is added. The concentrate thus obtained was diluted 1 + 4.4 with water and applied to a zinc surface.
- coated parts showed 0% white rust after 12 days.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/515,618 US20060083942A1 (en) | 2002-05-22 | 2003-05-19 | Conversion layer for bases made of zinc or zinc alloys |
EP03735311A EP1509636A2 (de) | 2002-05-22 | 2003-05-19 | Konversionsschicht für aus zink oder zinklegierungen bestehende untergründe |
AU2003236803A AU2003236803A1 (en) | 2002-05-22 | 2003-05-19 | Conversion layer for bases made of zinc or zinc alloys |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10223022A DE10223022A1 (de) | 2002-05-22 | 2002-05-22 | Konversionsschicht für aus Zink oder aus zinkhaltigen Legierungen bestehende Untergründe |
DE10223022.6 | 2002-05-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003097900A2 true WO2003097900A2 (de) | 2003-11-27 |
WO2003097900A3 WO2003097900A3 (de) | 2004-02-19 |
Family
ID=29432260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/001617 WO2003097900A2 (de) | 2002-05-22 | 2003-05-19 | Konversionsschicht für aus zink oder zinklegierungen bestehende untergründe |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060083942A1 (de) |
EP (1) | EP1509636A2 (de) |
AU (1) | AU2003236803A1 (de) |
DE (1) | DE10223022A1 (de) |
WO (1) | WO2003097900A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017219254A1 (zh) * | 2016-06-21 | 2017-12-28 | 深圳市恒兆智科技有限公司 | 钝化剂、铜件及其钝化处理方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4740389A (en) * | 1983-09-30 | 1988-04-26 | Statni Vyzkmoy Ustav Ochrany Materialu G.V. Akimova | Composition and method for producing layers with a high specific surface on iron aluminum, zinc, and technical alloys |
JPH05125553A (ja) * | 1991-11-07 | 1993-05-21 | Toto Ltd | 耐食性皮膜とその形成方法 |
EP0760401A1 (de) * | 1995-08-21 | 1997-03-05 | Dipsol Chemical Co., Ltd | Flüssige Zusammensetzung und Verfahren zur Bildung einer rostsicheren Schicht |
US5714093A (en) * | 1994-10-21 | 1998-02-03 | Elisha Technologies Co. L.L.C. | Corrosion resistant buffer system for metal products |
WO2003012167A2 (en) * | 2001-08-03 | 2003-02-13 | Elisha Holding Llc | An electroless process for treating metallic surfaces and products formed thereby |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE316668B (de) * | 1963-09-23 | 1969-10-27 | Parker Ste Continentale | |
US3945899A (en) * | 1973-07-06 | 1976-03-23 | Kansai Paint Company, Limited | Process for coating aluminum or aluminum alloy |
GB8608508D0 (en) * | 1986-04-08 | 1986-05-14 | Pyrene Chemical Services Ltd | Coating metal surfaces |
US5108793A (en) * | 1990-12-24 | 1992-04-28 | Armco Steel Company, L.P. | Steel sheet with enhanced corrosion resistance having a silane treated silicate coating |
CH687330A5 (de) * | 1992-10-01 | 1996-11-15 | Lab Ab | Behandlung von Metalloberflächen mittels Silikaten zur Verbesserung der Haftung von Beschichtungen. |
JPH07145487A (ja) * | 1993-06-29 | 1995-06-06 | Hokkai Can Co Ltd | 珪酸系コーティング剤 |
US6190779B1 (en) * | 1994-10-21 | 2001-02-20 | Elisha Technologies Co Llc | Corrosion resistant coating containing and amorphous phase |
KR100213852B1 (ko) * | 1995-11-13 | 1999-08-02 | 구마모토 마사히로 | 화성처리성이 우수한 윤활강판 및 그 제조방법 |
DE19602984A1 (de) * | 1996-01-27 | 1997-07-31 | Aloys Dr Wuestefeld | Verfahren zur Herstellung von Schutzschichten bestehend aus Aluminiumsilikaten bzw. fluoridhaltigen Aluminiumsilikaten auf Metalloberflächen, die Schutzschichten selbst und ihre Verwendung |
DE19615664A1 (de) * | 1996-04-19 | 1997-10-23 | Surtec Produkte Und Systeme Fu | Chrom(VI)freie Chromatschicht sowie Verfahren zu ihrer Herstellung |
JP3156586B2 (ja) * | 1996-05-08 | 2001-04-16 | 日本鋼管株式会社 | 耐白錆性と耐傷付き性に優れた亜鉛系めっき鋼板の製造方法 |
-
2002
- 2002-05-22 DE DE10223022A patent/DE10223022A1/de not_active Ceased
-
2003
- 2003-05-19 WO PCT/DE2003/001617 patent/WO2003097900A2/de not_active Application Discontinuation
- 2003-05-19 US US10/515,618 patent/US20060083942A1/en not_active Abandoned
- 2003-05-19 AU AU2003236803A patent/AU2003236803A1/en not_active Abandoned
- 2003-05-19 EP EP03735311A patent/EP1509636A2/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4740389A (en) * | 1983-09-30 | 1988-04-26 | Statni Vyzkmoy Ustav Ochrany Materialu G.V. Akimova | Composition and method for producing layers with a high specific surface on iron aluminum, zinc, and technical alloys |
JPH05125553A (ja) * | 1991-11-07 | 1993-05-21 | Toto Ltd | 耐食性皮膜とその形成方法 |
US5714093A (en) * | 1994-10-21 | 1998-02-03 | Elisha Technologies Co. L.L.C. | Corrosion resistant buffer system for metal products |
EP0760401A1 (de) * | 1995-08-21 | 1997-03-05 | Dipsol Chemical Co., Ltd | Flüssige Zusammensetzung und Verfahren zur Bildung einer rostsicheren Schicht |
WO2003012167A2 (en) * | 2001-08-03 | 2003-02-13 | Elisha Holding Llc | An electroless process for treating metallic surfaces and products formed thereby |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 017, no. 492 (C-1107), 7. September 1993 (1993-09-07) & JP 05 125553 A (TOTO LTD), 21. Mai 1993 (1993-05-21) * |
Also Published As
Publication number | Publication date |
---|---|
DE10223022A1 (de) | 2003-12-11 |
AU2003236803A8 (en) | 2003-12-02 |
AU2003236803A1 (en) | 2003-12-02 |
WO2003097900A3 (de) | 2004-02-19 |
US20060083942A1 (en) | 2006-04-20 |
EP1509636A2 (de) | 2005-03-02 |
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