• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Arabian Journal for Science and Engineering >SYNERGISTIC EFFECT OF POTASSIUM IODIDE ON INHIBITIVE PERFORMANCE OF THIADIAZOLES DURING CORROSION OF MILD STEEL IN 20% SULFURIC ACID
【24h】

SYNERGISTIC EFFECT OF POTASSIUM IODIDE ON INHIBITIVE PERFORMANCE OF THIADIAZOLES DURING CORROSION OF MILD STEEL IN 20% SULFURIC ACID

机译：碘化钾对20％硫酸中低碳钢腐蚀过程中噻唑类缓蚀性能的协同作用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Four heterocyclic compounds, namely 2-amino-l,3,4-thiadiazoles (AT), 2-amino-5-methyl-1,3,4-thiadiazole (AMT), 2-amino-5-ethyl-1,3,4-thiadiazole (AET), and 2-amino-5-propyl- 1,3,4-thiadiazole (APT) have been synthesized and evaluated as corrosion inhibitors for mild steel (MS) in 20% sulfuric acid (H_2S0_4) at 378 + 2 K by weight loss, and potentiodynamic polarization techniques were carried out at room temperature, 301± 2 K. The purity of synthesized inhibitors was checked by FT-IR and NMR studies. A scanning electron microscopic (SEM) study was done on the inhibited and uninhibited metal samples to characterize the surface. Enhancement in IE of these compounds was observed on addition of potassium iodide (KI) due to synergism. All the heterocyclic compounds showed excellent performance. 2-amino-5-propyl -1,3,4-thiadiazoles (APT) has been found to be the best corrosion inhibitor. It exhibited ≈ 87% inhibition efficiency (IE) for mild steel and showed ≈ 94% in the presence of KI. The adsorption of these compounds on the mild steel surface in the presence of sulfuric acid obeyed Langmuir's adsorption isotherm. Potentiodynamic polarization studies were carried out at room temperature, and showed that all the compounds studied are mixed-type inhibitors causing blocking of active sites on the metal.
机译：四个杂环化合物，即2-氨基-1,3,4-噻二唑（AT），2-氨基-5-甲基-1,3,4-噻二唑（AMT），2-氨基-5-乙基-1,3合成了4,4-噻二唑（AET）和2-氨基-5-丙基-1,3,4-噻二唑（APT）作为低碳钢（MS）在20％硫酸（H_2S0_4）中的腐蚀抑制剂失重378±2K，并在301±2K的室温下进行电位动力学极化技术。通过FT-IR和NMR研究检查合成抑制剂的纯度。对受抑制和不受抑制的金属样品进行了扫描电子显微镜（SEM）研究，以表征表面。由于协同作用，在添加碘化钾（KI）后观察到这些化合物的IE增强。所有杂环化合物均表现出优异的性能。已发现2-氨基-5-丙基-1,3,4-噻二唑（APT）是最好的腐蚀抑制剂。它对低碳钢表现出约87％的抑制效率（IE），在KI存在下表现出约94％的抑制效率。在硫酸存在下，这些化合物在低碳钢表面上的吸附遵循Langmuir的吸附等温线。电位动力极化研究在室温下进行，结果表明所有研究的化合物均为混合型抑制剂，导致金属上活性位的封闭。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号