Present study describes the inhibition property of benzo 1,3-diazol 2-(4-{[4-Methyl-6-(1-methyl-1H-1,3-benzodiazol-2-yl)-2-propyl-1H-1,3-benzodiazol-1-yl] methyl} phenyl) benzoic acid (Telmisartan, Cresar-H) on mild steel corrosion in 1 M HCl using weight loss, electrochemical, and surface measurements. Results showed that the corrosion inhibition efficiency (η%) increases with increasing Telmisartan concentration and attained the maximum value of 97.39% at 125 mg L⁻¹ concentration. Polarization studies revealed that Telmisartan acted as cathodic type inhibitor. Electrochemical impedance spectroscopy (EIS) studies suggested that the Telmisartan inhibits mild steel corrosion by becoming adsorbate at the metallic/electrolyte surfaces. Among the several tested isotherms, adsorption of the Telmisartan on mild steel surface obeyed the Temkin adsorption isotherm. The values of the apparent activation energy (E_a) suggested that Telmisartan inhibited metallic corrosion by creating energy barrier for corrosion process. The adsorption of corrosion inhibition was well supported by SEM/EDX and AFM studies.

本研究描述了苯并1,3-二唑2-（4-{[4-甲基-6-（1-甲基-1 H -1,3-苯并二唑-2-基）-2-丙基-1]的抑制性质H -1,3-苯并二唑-1-基]甲基}苯基）苯甲酸（替米沙坦（Telmisartan，Cresar-H））在1 M HCl中的轻钢腐蚀下，采用失重，电化学和表面测量。结果表明，随着替米沙坦浓度的增加，缓蚀效率（η％）增加，在125 mg L ^-1时达到最大值97.39％。浓度。极化研究表明替米沙坦起着阴极型抑制剂的作用。电化学阻抗谱（EIS）研究表明，替米沙坦通过在金属/电解质表面吸附而抑制轻钢腐蚀。在几种测试的等温线中，替米沙坦在低碳钢表面的吸附符合Temkin吸附等温线。表观活化能（E _a）的值表明替米沙坦通过为腐蚀过程创建能垒来抑制金属腐蚀。SEM / EDX和AFM研究很好地支持了缓蚀剂的吸附。