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N-b-Hydroxyethyl Oleyl Imidazole as Synergist to Enhance the Corrosion Protection Effect of Natural Cocoyl Sarcosine on Steel

Corrosion and Materials Degradation. Bd. 3. H. 3. Basel: MDPI 2022 S. 536 - 552

Erscheinungsjahr: 2022

Publikationstyp: Zeitschriftenaufsatz

Sprache: Englisch

Doi/URN: 10.3390/cmd3030029

Volltext über DOI/URN

GeprüftBibliothek

Inhaltszusammenfassung


To investigate the corrosion protection behavior of naturally derived cocoyl sarcosine in combination with N-b-hydroxyethyl oleyl imidazole for steel CR4 in 0.1 M NaCl, different evaluation systems (weight loss, electrochemical measurements, and spray corrosion tests) were used. Both compounds were tested in different concentrations (25–100 mmol/L) and with variable dip coating times (1–30 min), first individually and then in combination, to check any synergistic effects for surface protectio...To investigate the corrosion protection behavior of naturally derived cocoyl sarcosine in combination with N-b-hydroxyethyl oleyl imidazole for steel CR4 in 0.1 M NaCl, different evaluation systems (weight loss, electrochemical measurements, and spray corrosion tests) were used. Both compounds were tested in different concentrations (25–100 mmol/L) and with variable dip coating times (1–30 min), first individually and then in combination, to check any synergistic effects for surface protection. Both showed only an insignificant corrosion inhibiting effect with less than 50% efficiency at all concentrations and dip coating times if used alone. In contrast, compound combinations revealed an improved corrosion inhibition correlated with higher concentrations. Across all methods, the compound combination concentration of 100 mmol/L resulted in improved efficiency of up to 83% for gravimetric tests, up to 84% for the impedance measure and more than 91% for potentiodynamic polarization. Dip coating variations proved 10 min to be the best option for all compounds with a maximum efficiency of up to 86% for the compound combination.» weiterlesen» einklappen

  • protective film
  • synergistic effect
  • low carbon steel
  • dip time effects
  • image processing

Autoren


Ehrenhaft, Gitta (Autor)
Gollnick, Jörg (Autor)

Klassifikation


DFG Fachgebiet:
Chemische Festkörper- und Oberflächenforschung

DDC Sachgruppe:
Physik

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