关于二苄基亚砜、硫脲及其它含氮的有机化合物或其混合物对铁在 HF 酸中缓蚀作用已有一些报导。本工作研究含 N、S 或 O 的咪唑啉衍生物对钢(20A,A3,X20)在HF 酸、HCl 酸和柠檬酸中的缓蚀作用。用量子化学的 CNDO/2方法计算了各咪唑衍生物分子中原子的电子密度,同时也计算了前线轨道(HOMO、LUMO)的能量。将计算结果和用失重法测出的腐蚀速度和缓蚀效率进行比较,表明1-氨乙基-2-十一烷基咪唑啉-硫脲缩合物(SM-型化合物)的缓蚀效率最高,是一种性能优良的缓蚀剂。 There have been some reports on the inhibition of iron corrosion by HF in dibenzyl sulfoxides, thiourea and other nitrogen-containing organic compounds or mixtures thereof. In this work, we investigated the corrosion inhibition of steel (20A, A3, X20) in HF acid, HCl acid and citric acid by N, S or O imidazoline derivatives. Quantum chemical CNDO / 2 method was used to calculate the electron density of the atoms in each imidazole derivative molecule, and the energies of the frontier orbital (HOMO, LUMO) were also calculated. Comparing the calculated results with the corrosion rates and corrosion inhibition efficiencies measured by weight loss method showed that the corrosion inhibition efficiency of 1-aminoethyl-2-undecylimidazoline-thiourea condensate (SM-type compound) Is a good performance inhibitor.