DE1900527A1 - Process for applying a phosphate coating to surfaces of steel, zinc or aluminum - Google Patents
Process for applying a phosphate coating to surfaces of steel, zinc or aluminumInfo
- Publication number
- DE1900527A1 DE1900527A1 DE19691900527 DE1900527A DE1900527A1 DE 1900527 A1 DE1900527 A1 DE 1900527A1 DE 19691900527 DE19691900527 DE 19691900527 DE 1900527 A DE1900527 A DE 1900527A DE 1900527 A1 DE1900527 A1 DE 1900527A1
- Authority
- DE
- Germany
- Prior art keywords
- acid
- zinc
- steel
- aluminum
- complexing agent
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
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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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Chemically Coating (AREA)
Description
Verfahren zum Aufbringen eines Phosphatüberzuges auf Oberflächen von Stahl, Zink oder Aluminium Im Patent Nr. (Anmeldung P 15 21 884.5) ist ein Verfahren vorgeschlagen, um gleichzeitig oder nacheinander auf Oberflächen von Stahl, Zink oder Aluminium einen Phosphatüberzug aufzubringen. Hierbei werden die Oberflächen mit einer wässrigen sauren Lösung, die primäres Ammoniumphosphat, Fluorid und als Beschleuniger eine lösliche Molybdän- oder Wolfram-Verbindung enthält und freien Alkalimetallionen ist, in Berührung gebracht. Als Beschleuniger wird Ammoniummolybdat bevorzugt. Das Fluorid ist als Lieferant für Fluoridionen erforderlich. Vorzugsweise werden diese insgesamt in Form von einfachen Fluorid, wie z.B. Ammoniumfluorid oder Ammoniumbifluorid eingebracht. Sie können aber auch ganz oder teilweise als komplexes Fluorid, wie z.B. Ammoniumfluoborat oder Ammoniumsilicofluorid, zur Ver'gung gestellt werden. Die Anwesenheit von mindestens etwas einfachem Fluorid ist jedoch stets erwünscht. Process for applying a phosphate coating to surfaces of steel, zinc or aluminum In patent no. (Application P 15 21 884.5) is a process proposed to work simultaneously or successively on surfaces of steel, zinc or to apply a phosphate coating to aluminum. This is where the surfaces with an aqueous acidic solution containing primary ammonium phosphate, and fluoride as Accelerator contains a soluble molybdenum or tungsten compound and is free Alkali metal ions are brought into contact. Ammonium molybdate is used as an accelerator preferred. The fluoride is required as a supplier of fluoride ions. Preferably these are all in the form of simple fluoride, such as ammonium fluoride or Introduced ammonium bifluoride. But they can also be wholly or partially complex Fluoride, such as ammonium fluorate or ammonium silicofluoride, are available will. However, there is always the presence of at least some simple fluoride he wishes.
Es ist von Bedeutung, daß die Lösung frei von Alkalimetallionen ist, da diese eine Ausfällung von unlöslichen komplexen Alkalialuminiumfluoriden auf Aluminiumoberflächen bewirken. Größere Mengen anderer metallischer Kationen sollten ebenfalls vermieden werden. Geringe Mengen an von den Werkstücken gelöstem Zink, Eisen oder Aluminium ergeben jedoch keinen nachteiligen Einfluß.It is important that the solution is free of alkali metal ions, as this causes precipitation of insoluble complex alkali aluminum fluorides Effect aluminum surfaces. Larger amounts of other metallic cations should also be avoided. Small amounts of zinc loosened from the workpieces, However, iron or aluminum gives no adverse influence.
Wenn die zu beschichtenden Oberflächen in weitem Ausmaß aus Zink oder galvanisiertem Stahl bestehen, nimmt das.auf Stahl erzeugte Überzugsgewicht ab, wenn die Lösung längere Zeit in Gebrauch war.If the surfaces to be coated are largely made of zinc or galvanized steel, the coating weight produced on steel decreases, if the solution has been in use for a long time.
Die Abnahme steht mit einer Anreicherung an Zinkionen in der Lösung in Zusammenhang.The decrease stands with an accumulation of zinc ions in the solution in context.
Es wurde nun gefunden, daß dieser Nachteil vermieden und das Schichtgewicht ii wesentlichen konstant gehalten wird, wenn die Überzugslösung zusätzlich mindestens einen Komplexbildner für Zink in saurer Lösung enthält.It has now been found that this disadvantage and the layer weight avoided ii is kept essentially constant if the coating solution additionally at least contains a complexing agent for zinc in acidic solution.
Das komplexbildende Mittel kann hierbei einem Bad zugesetzt werden, das bereits in Benutzung war, so daß das Sch@ch@gewicht bei der Behandlung von Stahl wenigstens im wesentlichen wieder auf seinen ursprünglichen Wert zurückgebracht wird. Der Kompleibilduer kann aber auch direkt beim Ansatz des Bades zugefügt werden.The complexing agent can be added to a bath, that was already in use, so that the Sch @ ch @ weight when treating steel at least substantially restored to its original value will. The Kompleibilduer can also be added directly at the beginning of the bath.
Geeignete Komplexbildner sind z.B. Äthylendiamintetraessigsäure (ADTE), Nitrilotriessigsäure, Diäthylentriaminpentaessigsäure, Gluconsäure, Glucoheptonsäure, Weinsäure, Dihydroxyweinsäure, Zitronensäure und Oxalsäure.Suitable complexing agents are e.g. ethylenediaminetetraacetic acid (ADTE), Nitrilotriacetic acid, diethylenetriaminepentaacetic acid, gluconic acid, glucoheptonic acid, Tartaric acid, dihydroxy tartaric acid, citric acid and oxalic acid.
Zweckmäßig werden 0,25 - 6 g/l und vorzugsweise 0,5 - 2,5 g/l insgesamt an einem oder mehreren Komplexbildnern verwendet.Expediently, 0.25 - 6 g / l and preferably 0.5 - 2.5 g / l in total used on one or more complexing agents.
Beispiel Es wurde eine wässrige Lösung folgender Zusammensetzung hergestellt: Primäres Ammoniumphosphat, NH4112P04 20 g/l Ammoniumfluorid, NH4F 3 g/i Ammoniumsilicofluorid (NH4)28iF6 0,5 g/l Ammoniummolybdat, (NH4)6Mo7O2404H2O 1 g/l Phosphorsäure, IN PO 4 g/l 'f Das anfänglich auf Stahl durch 15 Sek. langes Spritzen bei 710 c erhaltene Schichtgewicht betrug 269 mg/m20 Nachdem 0,195 m2/1 Stahl, 0,8 m2/1 galvanisierter Stahl und 0,019 m2/1 Aluminium beschichtet worden waren, wurde auf Stahl nur mehr ein Schichtgewicht von 108 mg/m2 erhalten. Der Lösung wurden dann 3,5 g/l ÄDTE zugegeben, und das Schichtgewicht bei Stahl wurde hierdurch-wieder auf 269 mg/m² beraufgsetzt.Example An aqueous solution of the following composition was prepared: Primary ammonium phosphate, NH4112P04 20 g / l ammonium fluoride, NH4F 3 g / l ammonium silicofluoride (NH4) 28iF6 0.5 g / l ammonium molybdate, (NH4) 6Mo7O2404H2O 1 g / l phosphoric acid, IN PO 4 g / l 'f The initially obtained on steel by spraying for 15 seconds at 710 ° C Layer weight was 269 mg / m20 after 0.195 m2 / 1 steel, 0.8 m2 / 1 galvanized Steel and 0.019 m2 / 1 aluminum had been coated on steel only get a layer weight of 108 mg / m2. 3.5 g / l AEDTE were then added to the solution, and the layer weight for steel was thereby-again on 269 mg / m² topped up.
Die erfindungsgemäße Maßnahme gestattet Aluminium, Zink oder Stahl in der gleichen Lösung zu beschichten und enn gleichmäßiges Schichtgewicht zu erzielen, unabhängig davon, in welchen Anteilen die einzelnen Metalle bei der Beschichtung vertreten Die Erfindung ist daher von besonderem Wert für kontinuierliche Bandanlagen, in denen jedes der Metalle behandelt werden soll zur Bildung von Phosphatüberzügen zur Vorbereitung für eine nach folgende Lackierung und wobei die lackierten Oberflächu er beträchtlichen Umformung standhalten sollen.The measure according to the invention allows aluminum, zinc or steel to be coated in the same solution and to achieve an even layer weight, regardless of the proportions of the individual metals in the coating represented The invention is therefore of particular value for continuous conveyor systems, in which each of the metals is to be treated to form phosphate coatings in preparation for a subsequent painting and whereby the painted surface it should withstand considerable deformation.
- Patentansprüche- Claims
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB973468A GB1198546A (en) | 1968-02-28 | 1968-02-28 | Production of Phosphate Coatings on Metal. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1900527A1 true DE1900527A1 (en) | 1969-09-18 |
Family
ID=9877743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691900527 Pending DE1900527A1 (en) | 1968-02-28 | 1969-01-07 | Process for applying a phosphate coating to surfaces of steel, zinc or aluminum |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT280729B (en) |
| BE (1) | BE727849A (en) |
| DE (1) | DE1900527A1 (en) |
| ES (1) | ES363767A2 (en) |
| FR (1) | FR96396E (en) |
| GB (1) | GB1198546A (en) |
| NL (1) | NL6900673A (en) |
| SE (1) | SE348007B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2905535A1 (en) * | 1979-02-14 | 1980-09-04 | Metallgesellschaft Ag | METHOD FOR SURFACE TREATMENT OF METALS |
| US4881975A (en) * | 1986-12-23 | 1989-11-21 | Albright & Wilson Limited | Products for treating surfaces |
| JPH0696773B2 (en) * | 1989-06-15 | 1994-11-30 | 日本ペイント株式会社 | Method for forming zinc phosphate film on metal surface |
| GB2259920A (en) * | 1991-09-10 | 1993-03-31 | Gibson Chem Ltd | Surface conversion coating solution based on molybdenum and phosphate compounds |
| US5143562A (en) * | 1991-11-01 | 1992-09-01 | Henkel Corporation | Broadly applicable phosphate conversion coating composition and process |
| GB9207725D0 (en) * | 1992-04-08 | 1992-05-27 | Brent Chemicals Int | Phosphating solution for metal substrates |
| WO1994012687A1 (en) * | 1992-11-26 | 1994-06-09 | Bhp Steel (Jla) Pty. Ltd. | Anti corrosion treatment of aluminium or aluminium alloy surfaces |
| BR9408073A (en) | 1993-11-16 | 1997-08-12 | Ici Australia Operations | Anti-corrosion treatment of metal-coated steel with aluminum zinc or alloy coatings thereof |
| CA2663659A1 (en) * | 2006-09-18 | 2008-03-27 | Henkel Ag & Co. Kgaa | Non-chrome thin organic-inorganic hybrid coating on zinciferous metals |
-
0
- FR FR96396D patent/FR96396E/en not_active Expired
-
1968
- 1968-02-28 GB GB973468A patent/GB1198546A/en not_active Expired
-
1969
- 1969-01-07 DE DE19691900527 patent/DE1900527A1/en active Pending
- 1969-01-15 NL NL6900673A patent/NL6900673A/xx unknown
- 1969-01-23 AT AT71169A patent/AT280729B/en not_active IP Right Cessation
- 1969-02-03 BE BE727849D patent/BE727849A/xx unknown
- 1969-02-18 ES ES363767A patent/ES363767A2/en not_active Expired
- 1969-02-27 SE SE270769A patent/SE348007B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE727849A (en) | 1969-07-16 |
| SE348007B (en) | 1972-08-21 |
| AT280729B (en) | 1970-04-27 |
| FR96396E (en) | 1972-06-16 |
| ES363767A2 (en) | 1970-12-16 |
| GB1198546A (en) | 1970-07-15 |
| NL6900673A (en) | 1969-09-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHN | Withdrawal |