一种咪唑啉对碳钢在除盐水中的缓蚀作用研究

Study on the Corrosion Inhibition of an Imidazoline to Carbon Steel in the Desalting Water

摘要: 本文采用失重法和极化曲线法研究了碳钢在加不同浓度咪唑啉缓蚀剂的40℃除盐水中的腐蚀、缓蚀情况，并初步探讨了该咪唑啉缓蚀剂的缓蚀机理。研究结果表明，在加入不同浓度咪唑啉的除盐水中，缓蚀剂对碳钢的缓蚀效果随咪唑啉浓度的增加而变好，当咪唑啉浓度达到60 mg/L时，碳钢在除盐水中的腐蚀内能被抑制住；该咪唑啉缓蚀剂在除盐水中对碳钢是阳极型缓蚀剂，通过吸附在碳钢表面形成覆盖膜防腐。

Abstract: The corrosion inhibition of an imidazoline with different concentration to carbon steel in the de-salting water, which was open to atmospheric at 40˚C, was studied by weight-loss method and po-larization curve method, and the inhibition mechanism of the imidazoline was preliminary studied. The research results show that the inhibition effect of the imidazoline to carbon steel in the desalting water increases with the increase of its concentration, when its concentration is 60 mg/L, the corrosion of carbon steel in the desalting water can be inhibited, and the imidazoline to carbon steel in the desalting water is an anode type inhibitor, which is adsorbed on the carbon steel surface to form a covering membrane to prevent corrosion.