腐蚀
介电谱
硅酸钠
阴极保护
碳钢
盐(化学)
硅酸盐
材料科学
电化学
体积流量
冶金
电极
复合材料
化学工程
化学
物理
物理化学
量子力学
工程类
作者
E. De Ketelaere,D. Moed,Marjolein Vanoppen,Arne Verliefde,Kim Verbeken,Tom Depover
标识
DOI:10.1016/j.corsci.2023.111119
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.
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