Sodium silicate corrosion inhibition behaviour for carbon steel in a dynamic salt water environment

被引：23

作者：

De Ketelaere, E. ^{[1
]}

Moed, D. ^{[2
]}

Vanoppen, M. ^{[3
]}

Verliefde, A. R. D. ^{[3
]}

Verbeken, K. ^{[1
]}

Depover, T. ^{[1
]}

机构：

[1] Univ Ghent, Dept Mat Text & Chem Engn, Res Grp Sustainable Mat Sci, Zwijnaarde, Belgium

[2] Evides Ind Water, Rotterdam, Netherlands

[3] Univ Ghent, Dept Green Chem & Technol, Res Grp Particle & Interfacial Technol, Ghent, Belgium

来源：

CORROSION SCIENCE | 2023年 / 217卷

基金：

比利时弗兰德研究基金会;

关键词：

Carbon steel; EIS; Polarization; Neutral inhibition; Oxide coatings; MILD-STEEL; HYDRODYNAMIC CONDITIONS; SYNERGISTIC INHIBITION; FLOW; PHOSPHONATE; CONVERSION; PHOSPHATE; MOLYBDATE; SURFACE; METALS;

D O I：

10.1016/j.corsci.2023.111119

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work investigates the sustainable green corrosion inhibitor sodium silicate (SS) in inhibition efficiency (IE) and mechanism for carbon steel in a dynamic 3 wt% NaCl environment. Electrochemical impedance spectroscopy and potentiodynamic scans are performed within a rotating cylinder electrode setup at variable conditions. Increasing SS dosage (<= 10mM) under constant laminar flow results in higher IE (up to 99.8%), linked to replacement of water by silicate species, followed by more structured film formation at the steel surface. Increasing flow rate results in maximum IE at intermediate flow rate, linked to faster transport of silicate and cathodic species to the steel surface and more mechanical removal of the film.

引用

页数：10

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