Chemical Phosphatizing of Carbon Steel

  • I. A. Kazarinov
  • L. A. IsaichevaEmail author
  • Adiba A. Makhmmod
  • N. M. Trepak


Kinetics of formation of phosphate coatings (PCs) on St3 carbon steel in zinc nitrate–phosphate solution (0.65 М Zn2+ + 0.3 М \({\text{PO}}_{{\text{4}}}^{{{\text{3}} - }}\) + 1.0 М \({\text{NO}}_{{\text{3}}}^{ - },\) рН 1.95) with various additives has been studied at 25°С. It has been shown that introduction of effective silicon-containing additive to phosphatizing solution and further treatment of phosphate films in aqueous solution containing silicon compounds has provided corrosion-stable PCs on St3. Using mathematical planning of Box–Wilson extreme experiment, preparation of PCs with increased protective ability has been optimized under these conditions.


steel of St3 brand phosphatizing kinetics additives corrosion stability additional treatment 



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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • I. A. Kazarinov
    • 1
  • L. A. Isaicheva
    • 2
    Email author
  • Adiba A. Makhmmod
    • 3
  • N. M. Trepak
    • 1
  1. 1.Chernyshevskii Saratov National Research State UniversitySaratovRussia
  2. 2.Vavilov Saratov State Agricultural UniversitySaratovRussia
  3. 3.Diyala UniversityBaqubaIraq

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