Synthesis and Corrosion Inhibition of Mild Steel in a Phosphoric Acid Solution of a Novel Benzothiazine Derivative

被引：2
|
作者：
El-khlifi, A. [1 ]
Saadouni, M. [2 ]
Ijoub, R. [1 ]
Oubihi, A. [1 ]
Elaoufir, Y. [3 ]
Boukhriss, S. [2 ]
Ouhssine, M. [1 ]
机构：
[1] Ibn Tofail Univ, Fac Sci, Lab Biotechnol Environm & Qual, Kenitra 14000, Morocco
[2] Ibn Tofail Univ, Fac Sci, Lab Organ Organometall & Theoret Chem, Kenitra 14000, Morocco
[3] Ibn Tofail Univ, Higher Sch Educ & Training, Lab Organ Chem Catalysis & Environm, PB 133, Kenitra 14050, Morocco
来源：
PORTUGALIAE ELECTROCHIMICA ACTA | 2022年 / 40卷 / 01期
关键词：
corrosion inhibition; benzothiazine; phosphoric acid; mild steel; EIS; ANTIMICROBIAL ACTIVITY; MECHANISM; ALUMINUM; INSIGHTS; SURFACE; COPPER;
D O I：
10.4152/pea.2022400103
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Ethyl 3-hydroxy-2-(p-tolyl)-3,4-dihydro-2H-benzo[b][1,4]thiazine-3-carboxylate (EHBT) inhibition effect and its adsorption onto a mild steel surface in phosphoric acid (2 M H3PO4) was investigated, at temperatures varying between 298 and 328 K, by weight loss, EIS and potentiodynamic polarization techniques. The tested compound showed an inhibition efficiency that was superior to 88 % for a concentration equal to 5 x 10(-3) M. Polarization measurements indicated that the examined EHBT acted as a mixed inhibitor. The protection efficiency increased with higher inhibitor concentrations and decreased with an increase in temperature. EHBT adsorption onto the mild steel surface obeyed Langmuir adsorption isotherm. EHBT inhibition action was also evaluated by surface SEM images.
引用
收藏
页码：33 / 46
页数：14
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