AT285279B - Verfahren zur Verminderung der unerwünschten Bildung des Ferro-Nitroso-Komplexes in Nitrit enthaltenden Phosphatierungsbädern - Google Patents

Verfahren zur Verminderung der unerwünschten Bildung des Ferro-Nitroso-Komplexes in Nitrit enthaltenden Phosphatierungsbädern

Info

Publication number
AT285279B
AT285279B AT611969A AT611969A AT285279B AT 285279 B AT285279 B AT 285279B AT 611969 A AT611969 A AT 611969A AT 611969 A AT611969 A AT 611969A AT 285279 B AT285279 B AT 285279B
Authority
AT
Austria
Prior art keywords
ferro
reducing
baths containing
containing nitrite
undesired formation
Prior art date
Application number
AT611969A
Other languages
German (de)
English (en)
Inventor
Werner Dr Rausch
Han Yong Dr Oei
Siegfried Moeller
Original Assignee
Metallgesellschaft Ag
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 Metallgesellschaft Ag filed Critical Metallgesellschaft Ag
Application granted granted Critical
Publication of AT285279B publication Critical patent/AT285279B/de

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
    • C23C22/12—Orthophosphates containing zinc cations
    • C23C22/13—Orthophosphates containing zinc cations containing also nitrate or nitrite anions

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Compounds Of Iron (AREA)
AT611969A 1968-07-06 1969-06-26 Verfahren zur Verminderung der unerwünschten Bildung des Ferro-Nitroso-Komplexes in Nitrit enthaltenden Phosphatierungsbädern AT285279B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681771769 DE1771769A1 (de) 1968-07-06 1968-07-06 Verfahren zur Tauchphosphatierung von Eisen und Stahl

Publications (1)

Publication Number Publication Date
AT285279B true AT285279B (de) 1970-10-27

Family

ID=5700982

Family Applications (1)

Application Number Title Priority Date Filing Date
AT611969A AT285279B (de) 1968-07-06 1969-06-26 Verfahren zur Verminderung der unerwünschten Bildung des Ferro-Nitroso-Komplexes in Nitrit enthaltenden Phosphatierungsbädern

Country Status (5)

Country Link
AT (1) AT285279B (es)
BE (1) BE735327A (es)
DE (1) DE1771769A1 (es)
ES (1) ES369195A1 (es)
FR (1) FR2014526A1 (es)

Also Published As

Publication number Publication date
BE735327A (es) 1969-12-01
FR2014526A1 (en) 1970-04-17
ES369195A1 (es) 1971-05-16
DE1771769A1 (de) 1972-01-05

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