Babić-Samardzija Ksenija, Lupu Corina, Hackerman Norman, Barron Andrew R, Luttge Andreas
Department of Chemistry, Rice University, Houston, Texas 77005, and Department of Earth Science, Rice University, Houston, Texas 77005, USA.
Langmuir. 2005 Dec 20;21(26):12187-96. doi: 10.1021/la051766l.
The heterocyclic diazoles 3-amino-1H-isoindole, indazole, imidazole, 4-bromoimidazole, 4-methylimidazole, pyrazole, 4-nitropyrazole, and 4-sulfopyrazole were investigated as corrosion inhibitors of iron in 1 M HCl using ac and dc techniques. The polarization curves showed a decrease in corrosion current for the inhibitor-containing solution. Impedance spectra demonstrate that the charge-transfer resistance in the presence of these inhibitors was greater than in inhibitor-free solution, except for 4-nitropyrazole. The resistance increased with inhibitor concentration and with immersion time. The structural and electronic parameters of these diazoles were calculated using computational methodologies. The elemental composition and the speciation of the treated surfaces were investigated via XPS measurements, and morphological changes were monitored by vertical scanning interferometery.
使用交流和直流技术研究了杂环二唑类化合物3-氨基-1H-异吲哚、吲唑、咪唑、4-溴咪唑、4-甲基咪唑、吡唑、4-硝基吡唑和4-磺酸基吡唑作为铁在1 M盐酸中的缓蚀剂。极化曲线表明含抑制剂溶液的腐蚀电流降低。阻抗谱表明，除4-硝基吡唑外，在这些抑制剂存在下的电荷转移电阻大于无抑制剂溶液中的电荷转移电阻。电阻随抑制剂浓度和浸泡时间的增加而增大。使用计算方法计算了这些二唑的结构和电子参数。通过XPS测量研究了处理后表面的元素组成和形态，并用垂直扫描干涉仪监测了形态变化。
