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在许多行业广泛应用缓蚀剂来降低介质的腐蚀性,它们可以在低费用下有效地保护各种系统。在腐蚀体系的缓蚀理论方面已取得了一些成就,但用于保护亚硫酸盐蒸煮锅包覆层的缓蚀剂品种还不多。在考虑其对金属防腐蚀作用的同时,还应该考虑到缓蚀剂对蒸煮过程和产品(纸浆)质量的影响。目前,对缓蚀剂和其作用机理方面还没有统一的理论。用于酸性介质的缓蚀剂其缓蚀作用与其在金属/溶液界面上容易吸附有关。钢铁在酸性腐蚀条件下,金属表面带负电荷,所以,应该主要是吸附阳离子型的缓蚀剂。缓蚀试验采用电化学法(20℃)和重量法(150℃),介质为模拟的以及生产上用
Corrosion inhibitors are widely used in many industries to reduce the corrosiveness of the media and they can effectively protect various systems at low cost. Some achievements have been made in the corrosion inhibition theory of the corrosion system, but there are not many kinds of corrosion inhibitor used to protect the coating of the sulfite cooking pot. In considering its anti-corrosion effect on the metal, it should also consider the impact of corrosion inhibitor on the cooking process and product (pulp) quality. At present, there is no unified theory about corrosion inhibitor and its mechanism of action. Corrosion inhibitors used in acidic media have a role of corrosion inhibition associated with their easy adsorption at the metal / solution interface. Steel acid corrosion conditions, the metal surface with a negative charge, so it should be mainly cationic adsorption of corrosion inhibitors. Corrosion tests using electrochemical (20 ℃) and gravimetric method (150 ℃), the media for the simulation and production