Bark resin of Schinus molle as an eco-friendly inhibitor for API 5L X70 pipeline steel in HCl medium

被引：6
作者：
Taoui, Hicham [1 ]
Bentrah, Hamza [1 ]
Chala, Abdelouahad [1 ]
Djellab, Mounir [1 ]
机构：
[1] Univ Biskra, Lab Phys Couches Minces & Applicat, BP 145, Biskra 07000, RP, Algeria
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2019年 / 70卷 / 03期
关键词：
acid inhibition; API5L X70 pipeline steel; bark resin of Schinus molle; EIS; hydrochloric acid; GREEN CORROSION-INHIBITOR; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; OIL-FIELD CHEMICALS; MILD-STEEL; CARBON-STEEL; ACID; EXTRACT; GUM; SURFACE; ADDITIVES;
D O I：
10.1002/maco.201810477
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The inhibition effect of bark resin of Schinus molle (BRSM) on the corrosion of API 5L X70 pipeline steel in hydrochloric acid solution has been studied for the first time by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements; also, surface morphology has been analyzed by SEM-EDX. The inhibitor (BRSM) has been characterized by Fourier transform infrared spectroscopy (FTIR). The results show that BRSM is a good inhibitor in hydrochloric acid solution. The maximum percentage inhibition efficiency is equal to 94% at 2 gL(-1). The adsorption of BRSM on API 5L X70 pipeline steel surface obeys Langmuir adsorption isotherm, and involves physical adsorption. Polarization curves reveal that BRSM acts as a mixed-type inhibitor in hydrochloride acid.
引用
收藏
页码：511 / 520
页数：10
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