CN100339507C - Corrosion resistant, chromate-free conversion coating for magnesium alloys - Google Patents
Corrosion resistant, chromate-free conversion coating for magnesium alloys Download PDFInfo
- Publication number
- CN100339507C CN100339507C CNB2004100714667A CN200410071466A CN100339507C CN 100339507 C CN100339507 C CN 100339507C CN B2004100714667 A CNB2004100714667 A CN B2004100714667A CN 200410071466 A CN200410071466 A CN 200410071466A CN 100339507 C CN100339507 C CN 100339507C
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- solution
- magnesium
- chromate
- ionic species
- phosphonic acids
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- 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
-
- 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
- C23C22/36—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 containing also phosphates
-
- 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
- C23C22/40—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 molybdates, tungstates or vanadates
- C23C22/44—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 molybdates, tungstates or vanadates containing also 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
- 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
- C23C22/68—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 solutions with pH between 6 and 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
- 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
- C23C22/73—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 characterised by the process
- C23C22/77—Controlling or regulating of the coating process
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- 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)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A chromate-free, phosphate-fluoride conversion coating, with or without vanadate, formed on a magnesium or a magnesium alloy substrate, includes an active corrosion inhibitor selected from the group consisting of organo-phosphonic acids. The phosphonic acid group reacts with the magnesium metal of the substrate to form an insoluble salt.
Description
Technical field
The present invention relates to a kind of magnesium or magnesium alloy of being used for and listen anticorrosive, the chromate-free that has or do not have vanadate, phosphoric acid salt-fluorochemical conversion coating and a kind of coating solution that in coating process, uses on the product of formation.
Background technology
Magnesium alloy is light and hard, but since the activity of magnesium, the very damage of corrosion-vulnerable.Magnesium alloy need be protected and not be corroded in all practical applications.A kind of that magnesium alloy is generally used, at a low price, corrosion-resistant treatments is based on the conversion coating of dichromate.Though the conversion coating based on dichromate provides good anticorrosive protection, they based on compound (sexavalent chrome) have many occupationals and expose risk to the open air.Need chromate-free, anticorrosive magnesium conversion coating to satisfy industrial requirement.
In people's such as Joesten United States Patent (USP) 5,683,522, showed the processing of another kind of protection magnesium or magnesium-alloy material, as a reference at this.In this processing, the corrosion-resistant coating of paint adhesion and trimagnesium phosphate, magnesium fluoride is used for the product that formed by magnesium alloy.The process of using coating is included in the solution that contains phosphoric acid salt and fluoride ion floods magnesium-alloy material.Though this processing provides barrier film and extraordinary paint adhesion, do not comprise that electrochemical activity becomes to assign to suppress corrosion.That propose on February 11st, 2002 and proposed a kind of improved phosphoric acid salt-fluorochemical corrosion-resistant coating to magnesium at this common pending application sequence number 10/073,688 as a reference, and use this coating process.
The purpose of this invention is to provide a kind of anticorrosive conversion coating of improved chromate-free that is used for magnesium and magnesium-alloy material.
Another object of the present invention provides a kind of coating solution that forms the chromate-free corrosion-resistant coating.
Summary of the invention
Aforesaid purpose realizes by the present invention.
The invention provides following technical scheme.
1, a kind of solution that is used for forming chromate-free, corrosion-resistant coating on the product of magnesium or magnesium alloy formation comprises:
Contain the phosphoric acid salt of ionic species and the solution of fluorochemical;
Be selected from the active stopping agent of organic phospho acid, wherein said organic phospho acid is selected from straight chain aminoalkyl phosphonic acids, side chain aminoalkyl phosphonic acids, straight chained alkyl phosphonic acids, branched-chain alkyl phosphonic acids, tri methylene phosphonic acid and their mixture; With
Vanadate.
2, as technical scheme 1 described solution, wherein tri methylene phosphonic acid comprises nitrilo three (methylene phosphonic acid).
3, as technical scheme 1 described solution, wherein solution comprises the stopping agent between the 1ppm-1wt%.
4, as technical scheme 3 described solution, wherein solution comprises the stopping agent between the 10ppm-0.5wt%.
5, as technical scheme 3 described solution, wherein the phosphatic amount of ionic species is between 1g/L-50g/L, and the amount of the fluorochemical of ionic species is between 1g/L-10g/L.
6, as technical scheme 5 described solution, wherein between the phosphatic amount 10g/L-25g/L of ionic species, and the amount of the fluorochemical of ionic species is between 3g/L-5g/L.
7, a kind of on magnesium or magnesium alloy ground the method for anticorrosive, the chromate-free coating of preparation, comprise solution-treated ground, wherein phosphonyl group and magnesium metal reaction formation insoluble salt with one of technical scheme 1-6.
8, a kind of goods comprise the magnesium or the magnesium alloy ground that have with the corrosion-resistant coating of the method for technical scheme 7 preparation.
According to the present invention, under having or not having vanadate, the chromate-free that on magnesium or magnesium alloy ground, forms, phosphoric acid salt-fluorochemical conversion coating comprises the active stopping agent that is selected from organic phospho acid.Magnesium metal reaction on phosphonate group and the ground is to form insoluble salt.Preferably particularly nitrilo three (methylene phosphonic acid) is (NTMP) from the alkyl phosphonic acid of the aminoalkyl phosphonic acids of straight or branched, straight or branched and tri methylene phosphonic acid according to the organic phospho acid as stopping agent used in the present invention.When stopping agent comprised the aminoalkyl phosphonic acids, amine groups can combine with vanadate ion in coating solution, entered the vanadate associativity of conversion coating with increase.
Illustrate in the detailed below description of other details of magnesium among the present invention-magnesium alloy conversion coating, purpose and thus obtained advantage.
Embodiment
According to the present invention, the solution that is used for forming chromate-free, corrosion-resistant coating on magnesium or magnesium alloy ground comprises the solution that contains phosphoric acid salt and fluoride ion and is selected from the active stopping agent of organic phospho acid.
Solution among the present invention can be chosen wantonly and comprise the vanadate negatively charged ion.Active stopping agent is selected from the aminoalkyl phosphonic acids of straight or branched, alkyl phosphonic acid, tri methylene phosphonic acid and their mixture of straight or branched.Particularly suitable tri methylene phosphonic acid comprises nitrilo three (methylene phosphonic acid) (NTMP).
As previously described, chromate-free solution comprises phosphoric acid salt and fluoride ion.The amount of phosphoric acid salt and fluoride ion is respectively between the 1g/L-50g/L and between the 1g/L-10g/L, preferably respectively between the 10g/L-25g/L and between the 3g/L-5g/L.The pH value of controlling solution in the present invention is very important, and this is that quantity by phosphate ion in the solution and fluoride ion realizes.The pH value of preferred solution is between 5-7.The common unsettled series application 10/073 that employed concrete phosphoric acid salt and fluoride compound proposed on February 11st, 2002 when forming the solution of proper pH value, be documented in 688, and this common pending application is hereby incorporated by with its content.
According to the present invention, the amount of stopping agent is between 1ppm-1wt%, preferably between 10ppm-0.5wt% in the solution.Stopping agent exists with the form of organic phospho acid.Preferred organic phospho acid comprises the alkyl phosphonic acid and the tri methylene phosphonic acid of aminoalkyl phosphonic acids straight chain and side chain, straight chain and side chain.Particularly suitable tri methylene phosphonic acid be nitrilo three (methylene phosphonic acid) (NTMP).
According to the present invention, solution can comprise the vanadate negatively charged ion.For solution of the present invention, vanadic acid sodium is the vanadium ion source that is fit to.According to the present invention, the amount of vanadium ion is between about 1.0g/l-5.0g/l.Having found that the vanadate negatively charged ion combines with amine groups in the aminoalkyl phosphonic acids can strengthen the associativity of vanadate to conversion coating, thereby has improved coating performance.In addition, phosphonyl group in the sun erosion agent and magnesium metal substrate react and form the insoluble salt that can improve corrosion resistance.
The preferred chromate-free solution amount of comprising the phosphate ion between the 10-25g/L, amount the fluoride ion between the 3g/L-5g/L, amount at vanadate ion between the 1g/L-5g/L and amount the stopping agent between 10ppm-0.5wt%.
According to the present invention, magnesium or magnesium alloy ground with conversion coating mainly comprise trimagnesium phosphate and magnesium fluoride.Can think that the aminoalkyl phosphonic acids will form the insoluble magnesium salts as a conversion coating part.This composition will increase the interaction of vanadium and conversion coating, thereby increase the content of vanadium in the coating, and vanadium also uses as stopping agent
Obviously, the present invention is not limited to the example in this description and displaying, and these only illustrate implements best mode of the present invention, and these examples allow to change on the details of form, size, arrangement and the operation of parts.Purpose of the present invention is exactly all these type of changes in its spirit and scope that will be included in that claims state.
Claims (8)
1, a kind of solution that is used for forming chromate-free, corrosion-resistant coating on the product of magnesium or magnesium alloy formation comprises:
Contain the phosphoric acid salt of ionic species and the solution of fluorochemical;
Be selected from the active stopping agent of organic phospho acid, wherein said organic phospho acid is selected from straight chain aminoalkyl phosphonic acids, side chain aminoalkyl phosphonic acids, straight chained alkyl phosphonic acids, branched-chain alkyl phosphonic acids, tri methylene phosphonic acid and their mixture; With
Vanadate.
2, solution as claimed in claim 1, wherein tri methylene phosphonic acid comprises nitrilo three (methylene phosphonic acid).
3, solution as claimed in claim 1, wherein solution comprises the stopping agent between the 1ppm-1wt%.
4, solution as claimed in claim 3, wherein solution comprises the stopping agent between the 10ppm-0.5wt%.
5, solution as claimed in claim 3, wherein the phosphatic amount of ionic species is between 1g/L-50g/L, and the amount of the fluorochemical of ionic species is between 1g/L-10g/L.
6, solution as claimed in claim 5, wherein between the phosphatic amount 10g/L-25g/L of ionic species, and the amount of the fluorochemical of ionic species is between 3g/L-5g/L.
7, a kind of on magnesium or magnesium alloy ground the method for anticorrosive, the chromate-free coating of preparation, comprise solution-treated ground, wherein phosphonyl group and magnesium metal reaction formation insoluble salt with one of claim 1-6.
8, a kind of goods comprise the magnesium or the magnesium alloy ground that have with the corrosion-resistant coating of the method for claim 7 preparation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/601,247 US20040256030A1 (en) | 2003-06-20 | 2003-06-20 | Corrosion resistant, chromate-free conversion coating for magnesium alloys |
US10/601247 | 2003-06-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1572904A CN1572904A (en) | 2005-02-02 |
CN100339507C true CN100339507C (en) | 2007-09-26 |
Family
ID=33418585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004100714667A Expired - Fee Related CN100339507C (en) | 2003-06-20 | 2004-06-18 | Corrosion resistant, chromate-free conversion coating for magnesium alloys |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040256030A1 (en) |
EP (1) | EP1489199A1 (en) |
JP (1) | JP2005008985A (en) |
KR (1) | KR100611288B1 (en) |
CN (1) | CN100339507C (en) |
PL (1) | PL368625A1 (en) |
SG (1) | SG117497A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0507887D0 (en) * | 2005-04-20 | 2005-05-25 | Rohm & Haas Elect Mat | Immersion method |
JP2008174807A (en) * | 2007-01-19 | 2008-07-31 | Nippon Hyomen Kagaku Kk | Chromium-free metal surface treatment liquid |
US20090004486A1 (en) | 2007-06-27 | 2009-01-01 | Sarah Arsenault | Corrosion inhibiting additive |
WO2009072905A2 (en) * | 2007-12-04 | 2009-06-11 | Katja Products Limited | Surface coating |
TWI394863B (en) * | 2007-12-27 | 2013-05-01 | Kansai Paint Co Ltd | Metal surface treatment composition, and surface-treated metal material with metal surface treatment layer obtained from the metal surface treatment composition |
JP4908456B2 (en) | 2008-06-02 | 2012-04-04 | パンパシフィック・カッパー株式会社 | Copper smelting method |
US20130014670A1 (en) * | 2010-04-01 | 2013-01-17 | Commissariat a I'Energie Atomique et Aux Energies Altematives | Use of anticorrosion agents for conditioning magnesium metal, conditioning material thus obtained and preparation process |
JP5595874B2 (en) * | 2010-11-04 | 2014-09-24 | 三井金属鉱業株式会社 | Magnesium alloy surface treatment method |
JP6089053B2 (en) * | 2015-03-16 | 2017-03-01 | 有限会社エスク | Biodegradable metal surface modified stent with anticorrosive ability |
KR102142783B1 (en) * | 2018-11-30 | 2020-08-07 | 주식회사 포스코 | Surface-treating composition for magnesium or magnesium alloy and surface-treated magnesium or magnesium alloy using the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5143562A (en) * | 1991-11-01 | 1992-09-01 | Henkel Corporation | Broadly applicable phosphate conversion coating composition and process |
WO2000071626A1 (en) * | 1999-05-20 | 2000-11-30 | Henkel Kommanditgesellschaft Auf Aktien | Chromium-free anticorrosive and anticorrosive method |
CN1386901A (en) * | 2001-05-01 | 2002-12-25 | 日本巴卡莱近估股份有限公司 | Metal surface treating agent and method, and surface treatment of metal material |
Family Cites Families (15)
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US2312855A (en) * | 1940-09-07 | 1943-03-02 | Parker Rust Proof Co | Method of coating aluminum |
US3459600A (en) * | 1966-11-07 | 1969-08-05 | Todco Chem Co Inc | Novel zinc coating composition and method |
US4017334A (en) * | 1973-10-04 | 1977-04-12 | Oxy Metal Industries Corporation | Process for treating aluminum cans |
DE2905535A1 (en) * | 1979-02-14 | 1980-09-04 | Metallgesellschaft Ag | METHOD FOR SURFACE TREATMENT OF METALS |
US4308079A (en) * | 1980-06-16 | 1981-12-29 | Martin Marietta Corporation | Durability of adhesively bonded aluminum structures and method for inhibiting the conversion of aluminum oxide to aluminum hydroxide |
US4427459A (en) * | 1982-01-25 | 1984-01-24 | Pennwalt Corporation | Phosphate conversion coatings for metals with reduced coating weights and crystal sizes |
US5449415A (en) * | 1993-07-30 | 1995-09-12 | Henkel Corporation | Composition and process for treating metals |
US5380374A (en) * | 1993-10-15 | 1995-01-10 | Circle-Prosco, Inc. | Conversion coatings for metal surfaces |
US5683522A (en) * | 1995-03-30 | 1997-11-04 | Sundstrand Corporation | Process for applying a coating to a magnesium alloy product |
DE19754108A1 (en) * | 1997-12-05 | 1999-06-10 | Henkel Kgaa | Chromium-free anti-corrosion agent and anti-corrosion process |
JP3860697B2 (en) * | 1999-12-27 | 2006-12-20 | 日本パーカライジング株式会社 | Metal surface treatment agent, surface treatment method of metal material, and surface treatment metal material |
AU2001261544A1 (en) * | 2000-05-11 | 2001-11-20 | Henkel Corporation | Metal surface treatment agent |
EP1325172A4 (en) * | 2000-09-22 | 2005-08-10 | Henkel Kgaa | Composition and process for treating metals |
US6887320B2 (en) * | 2002-02-11 | 2005-05-03 | United Technologies Corporation | Corrosion resistant, chromate-free conversion coating for magnesium alloys |
US6692583B2 (en) * | 2002-02-14 | 2004-02-17 | Jon Bengston | Magnesium conversion coating composition and method of using same |
-
2003
- 2003-06-20 US US10/601,247 patent/US20040256030A1/en not_active Abandoned
-
2004
- 2004-06-15 SG SG200403770A patent/SG117497A1/en unknown
- 2004-06-15 KR KR1020040043886A patent/KR100611288B1/en not_active IP Right Cessation
- 2004-06-18 JP JP2004180425A patent/JP2005008985A/en active Pending
- 2004-06-18 CN CNB2004100714667A patent/CN100339507C/en not_active Expired - Fee Related
- 2004-06-18 EP EP04253681A patent/EP1489199A1/en not_active Withdrawn
- 2004-06-18 PL PL04368625A patent/PL368625A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5143562A (en) * | 1991-11-01 | 1992-09-01 | Henkel Corporation | Broadly applicable phosphate conversion coating composition and process |
WO2000071626A1 (en) * | 1999-05-20 | 2000-11-30 | Henkel Kommanditgesellschaft Auf Aktien | Chromium-free anticorrosive and anticorrosive method |
CN1386901A (en) * | 2001-05-01 | 2002-12-25 | 日本巴卡莱近估股份有限公司 | Metal surface treating agent and method, and surface treatment of metal material |
Also Published As
Publication number | Publication date |
---|---|
US20040256030A1 (en) | 2004-12-23 |
CN1572904A (en) | 2005-02-02 |
KR100611288B1 (en) | 2006-08-10 |
SG117497A1 (en) | 2005-12-29 |
KR20040110097A (en) | 2004-12-29 |
EP1489199A1 (en) | 2004-12-22 |
PL368625A1 (en) | 2004-12-27 |
JP2005008985A (en) | 2005-01-13 |
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