脂肪胺类化合物在盐酸介质中对工业纯铝缓蚀作用的研究

摘要

The corrosion of industrial pure aluminium in 1.0 mol.dm-3hydrochloride acid is investigated in the absence and presence of various amines,both by weight loss and electrochemistry.To begin with,the inhibition efficiency is found to follow the order: Hexamethylenetetramine>Diethylamine>n-Butylamine. With the increasing of the dipping time, the inhibition efficiency decreases gradually. The three amines, as the mixed inhibitors, has a great effect on the progress of cathodal and anodic corrosion of Al and can form a film by the adsorption on the surface of Al to protect Al from corrosion.%通过失重法、电化学方法分别研究了正丁胺、二乙胺、乌洛托品在1.0mol.dm-3HCl中对铝的缓蚀作用，并对其机理进行了探讨.研究结果表明：3种化合物对工业纯铝均具有一定的缓蚀作用.缓蚀效果：乌洛托品>二乙胺>正丁胺,随着时间的延长，它们的缓蚀效率逐渐降低.3种化合物均可在工业纯铝表面吸附成膜，抑制铝的腐蚀，为混合型缓蚀剂.