DE1109978B - Process to prevent sludge formation in the production of oxide-phosphate layers - Google Patents

Process to prevent sludge formation in the production of oxide-phosphate layers

Info

Publication number
DE1109978B
DE1109978B DEU4469A DEU0004469A DE1109978B DE 1109978 B DE1109978 B DE 1109978B DE U4469 A DEU4469 A DE U4469A DE U0004469 A DEU0004469 A DE U0004469A DE 1109978 B DE1109978 B DE 1109978B
Authority
DE
Germany
Prior art keywords
oxide
production
phosphate layers
nitrate
sludge formation
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
Application number
DEU4469A
Other languages
German (de)
Inventor
Wilhelm Roggendorf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ARTHUR UECKER K G DR
Original Assignee
ARTHUR UECKER K G DR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ARTHUR UECKER K G DR filed Critical ARTHUR UECKER K G DR
Priority to DEU4469A priority Critical patent/DE1109978B/en
Publication of DE1109978B publication Critical patent/DE1109978B/en
Pending legal-status Critical Current

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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates
    • C23C22/18—Orthophosphates containing manganese cations
    • C23C22/188—Orthophosphates containing manganese cations containing also magnesium cations
    • 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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates
    • C23C22/18—Orthophosphates containing manganese cations
    • C23C22/182—Orthophosphates containing manganese cations containing also zinc cations

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)

Description

Verfahren zur Verhinderung der Schlammbildung bei der Herstellung von Oxyd-Phosphatschichten Die Erfindung betrifft ein Verfahren zur Verhinderung der Schlammbildung bei der Herstellung von Oxyd-Phosphatschichten auf Eisen, Stahl oder Zink mittels einer ein Mangandioxyd und ein Nitrat enthaltenden phosphorsauren Lösung. Die Herstellung solcher Schichten erfolgt, wie bekannt, bei einer Temperatur von etwa 95 bis 100°C, und als Nitrate werden Calcium- oder Bariumnitrat verwendet. Die Verwendung von Nitraten, wie Magnesium-, Calcium-, Barium- und Zinknitrat, ist auch in Phosphatierungslösungen bekannt.Method of preventing sludge formation during manufacture of oxide-phosphate layers The invention relates to a method for prevention the formation of sludge during the production of oxide-phosphate layers on iron, steel or zinc by means of a phosphoric acid containing a manganese dioxide and a nitrate Solution. As is known, such layers are produced at one temperature from about 95 to 100 ° C, and calcium or barium nitrate are used as nitrates. The use of nitrates, such as magnesium, calcium, barium and zinc nitrate, is also known in phosphating solutions.

Bei der Herstellung von Oxyd-Phosphatschichten auf Eisen, Stahl oder Zink mittels einer ein Mangandioxyd und ein Nitrat enthaltenden phosphorsauren Lösung tritt eine starke Schlammbildung auf, die sich auch auf den Oxyd-Phosphatschichten unter Bildung eines graugrünen Überzuges abscheidet, was insbesondere bei Gegenständen, die Bohrungen, Profilierungen oder Vertiefungen aufweisen, unangenehm ist, weil sich der Schlamm von solchen Gegenständen schwer entfernen läßt. Um die Abscheidung von Schlamm möglichst zu vermeiden, müssen die Behälter, in denen die Herstellung der Oxyd-Phosphatschichten erfolgt, in kurzen Zeitabständen von dem sich am Boden ablagernden Schlamm befreit werden, um zu verhindern, daß sich auch aufgewirbelter Schlamm auf die mit der Schicht zu überziehenden Gegenstände absetzen kann.In the production of oxide-phosphate layers on iron, steel or Zinc by means of a phosphoric acid solution containing a manganese dioxide and a nitrate a strong sludge formation occurs, which also affects the oxide-phosphate layers separates with the formation of a gray-green coating, which is especially true for objects which have bores, profiles or depressions is uncomfortable because the sludge is difficult to remove from such items. To the deposition To avoid as much as possible of sludge, the containers in which the manufacture must be used The oxide-phosphate layers take place at short intervals of time from which on the ground sludge deposited are freed in order to prevent them from being whirled up Sludge can settle on the objects to be coated with the layer.

Es wurde die überraschende Feststellung gemacht, daß sich die Schlammbildung bei der Herstellung von Oxyd-Phosphatschichten auf Eisen, Stahl oder Zink mittels einer ein Mangandioxyd und ein Nitrat enthaltenden phosphorsauren Lösung verhindern läßt, wenn als Nitrat ein Magnesium- oder Zinknitrat verwendet wird. Da dies mit den bisher verwendeten Nitraten nicht möglich war, dürften die Kationen Zink und Magnesium für die Schlammverhinderung entscheidend sein.The surprising discovery was made that the sludge formation in the production of oxide-phosphate layers on iron, steel or zinc by means of a phosphoric acid solution containing a manganese dioxide and a nitrate if a magnesium or zinc nitrate is used as the nitrate. Since this with The previously used nitrates was not possible, the cations zinc and Magnesium can be crucial for sludge prevention.

Für die Zwecke der Erfindung geeignete Bäder sind folgende: 1. 10 bis 30 g/1 Zinknitrat Zn(N03)2 -i- H20, 5 bis 50 g/1 NatriummonophosphatNaH1P04, 7,5 bis 20 g/1 Orthophosphorsäure, 5 bis 15 g/1 Mangan-IV-Oxyd Mn02.Baths suitable for the purposes of the invention are as follows: 1. 10 up to 30 g / 1 zinc nitrate Zn (N03) 2 -i- H20, 5 to 50 g / 1 sodium monophosphate NaH1P04, 7.5 to 20 g / 1 orthophosphoric acid, 5 to 15 g / 1 manganese IV oxide Mn02.

2. 30 bis 100 g/1 Magnesiumnitrat Mg(N03)2 -I- 6 11,0, 5 bis 50 g/1 Natriummonophosphat NaH,P04, 7,5 bis 20 g/1 Orthophosphorsäure, 5 bis 15 g/1 Mangan-IV-Oxyd Mn 02.2. 30 to 100 g / 1 magnesium nitrate Mg (NO 3) 2 -I- 6 11.0, 5 to 50 g / 1 Sodium monophosphate NaH, PO4, 7.5 to 20 g / 1 orthophosphoric acid, 5 to 15 g / 1 manganese IV oxide Mn 02.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verhinderung der Schlammbildung bei der Herstellung von Oxyd-Phosphatschichten auf Eisen, Stahl oder Zink mittels einer ein Mangandioxyd und ein Nitrat enthaltenden phosphorsauren Lösung, dadurch gekennzeichnet, daß als Nitrat ein Magnesium- oder Zinknitrat verwendet wird. In Betracht gezogene Druckschriften: W. Machu, »Die Phosphatierung«, 1950, S. 146.PATENT CLAIM: Process for preventing sludge formation at the production of oxide-phosphate layers on iron, steel or zinc by means of a a manganese dioxide and a nitrate containing phosphoric acid solution, characterized in that, that a magnesium or zinc nitrate is used as the nitrate. Considered Publications: W. Machu, "Die Phosphatierung", 1950, p. 146.
DEU4469A 1957-04-05 1957-04-05 Process to prevent sludge formation in the production of oxide-phosphate layers Pending DE1109978B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEU4469A DE1109978B (en) 1957-04-05 1957-04-05 Process to prevent sludge formation in the production of oxide-phosphate layers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU4469A DE1109978B (en) 1957-04-05 1957-04-05 Process to prevent sludge formation in the production of oxide-phosphate layers

Publications (1)

Publication Number Publication Date
DE1109978B true DE1109978B (en) 1961-06-29

Family

ID=7565534

Family Applications (1)

Application Number Title Priority Date Filing Date
DEU4469A Pending DE1109978B (en) 1957-04-05 1957-04-05 Process to prevent sludge formation in the production of oxide-phosphate layers

Country Status (1)

Country Link
DE (1) DE1109978B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2242539A1 (en) * 1972-08-30 1974-04-11 Transcodan DEVICE FOR REGULATING THE FLOW RATE IN A FLEXIBLE TUBE, AS IN PARTICULAR FOR INFUSION AND TRANSFUSION DEVICES
EP0711849A1 (en) * 1994-11-11 1996-05-15 Metallgesellschaft Aktiengesellschaft Process for applying phosphate coatings

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2242539A1 (en) * 1972-08-30 1974-04-11 Transcodan DEVICE FOR REGULATING THE FLOW RATE IN A FLEXIBLE TUBE, AS IN PARTICULAR FOR INFUSION AND TRANSFUSION DEVICES
EP0711849A1 (en) * 1994-11-11 1996-05-15 Metallgesellschaft Aktiengesellschaft Process for applying phosphate coatings

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