Influence of Heteronuclear Salicylate Complex {[FeSr2(SalH)<sub>2</sub>(Sal)<sub>2</sub>(NO<sub>3</sub>)(DМА)<sub>4</sub>]}<sub>n</sub> on Corrosion of St.3 Steel in Water
Vol. 59 Nr. 1 (2023), Conținut
Vol. 59 Nr. 1 (2023)

Influence of Heteronuclear Salicylate Complex {[FeSr2(SalH)<sub>2</sub>(Sal)<sub>2</sub>(NO<sub>3</sub>)(DМА)<sub>4</sub>]}<sub>n</sub> on Corrosion of St.3 Steel in Water

  • Parshutin V.V.
  • Koval’ A.V.
  • Gorinchoi V.V.
  • Lozan V.I.
Parshutin V.V.
Koval’ A.V.
Gorinchoi V.V.
Lozan V.I.

Rezumat

CZU 620.197.323.669.14

 

https://doi.org/10.52577/eom.2023.59.1.47

 

The corrosion process of St.3 steel in water with the addition of a heteronuclear salicylate complex {[FeSr2(SalH)2(Sal)2(NO3)(DМА)4]}n has been investigated by gravimetric, electrochemical, physical, and chemical methods (by the X-ray phase analysis, UV/Vis-, IR- and Mössbauer spectroscopy). It is shown that introduction of the studied additive in the corrosive medium reduces steel corrosion significantly. The corrosion rate decreased by 5.1–11.1 times at the degree of protection of 80.5–91.0%, depending on the time of tests and inhibitor concentrations. The inhibition mechanism is offered. The inclusion of products of interaction of the ionized iron with the complex in the cover layers is proved.

 

Keywords: St.3 steel corrosion, inhibitor, heteronuclear salicylate complex, complex formation, covering protective layers.

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