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SELECTED BIS-THIADIAZOLE: SYNTHESIS AND CORROSION INHIBITION STUDIES ON MILD STEEL IN HCL ENVIRONMENT
Surface Review and Letters ( IF 1.1 ) Pub Date : 2020-05-31 , DOI: 10.1142/s0218625x20500146
ABBAS Z. SALMAN 1 , QUSAY A. JAWAD 1 , KHALID S. RIDAH 1 , LINA M. SHAKER 1 , AHMED A. AL-AMIERY 1
Affiliation  

The inhibition effect of synthesized corrosion inhibitor namely 5,5-(1,4-phenylene)bis([Formula: see text]-phenyl-1,3,4-thiadiazol-2-amine) (PBPA) on the corrosion of mild steel in 1-M hydrochloric acid environment are examined by gravimetric techniques at various temperature (303–343 K). The synthesized inhibitor concentrations are 0.1–0.5[Formula: see text]mM. The inhibition efficiency increased with the increase of the inhibitor concentration. The inhibition efficiency reached 94% at the highest studied concentration of 0.5[Formula: see text]mM for 5[Formula: see text]h of immersion time and 303[Formula: see text]K. Moreover, the inhibition efficiency decreased with the temperature increase. The adsorption of tested inhibitor molecules on the surface of mild steel follows the Langmuir adsorption isotherm. The studied inhibitor molecules showed excellent inhibition since PBPA molecules have nitrogen and sulfur atoms in addition to phenyl and thiadiazol rings which were linked together in conjugation system.

中文翻译:

选定的双噻二唑:HCL 环境中低碳钢的合成和腐蚀抑制研究

合成缓蚀剂的缓蚀效果即5,5'-(1,4-phenylene)bis([Formula: see text]-phenyl-1,3,4-thiadiazol-2-amine) (PBPA)对低碳钢在1-M盐酸环境中的腐蚀通过不同温度(303-343 K)下的重量分析技术。合成的抑制剂浓度为 0.1-0.5[公式:见正文]mM。抑制效率随着抑制剂浓度的增加而增加。在 0.5[公式:见正文]mM 的最高研究浓度下,浸泡时间为 5[公式:见正文]h 和 303[公式:见正文]K,抑制效率达到 94%。此外,抑制效率随着温度的升高而降低。测试抑制剂分子在低碳钢表面的吸附遵循朗缪尔吸附等温线。
更新日期:2020-05-31
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