用缓蚀剂来防止腐蚀——也就是在介质中加入少量添加剂以防止腐蚀——是防蚀中用得最广泛的方法之一。就其所处理的介质而言,可以有酸性溶液、中性溶液、石油、蒸汽和大气等;就其所保护的金属而言,可以有钢、铁、铝、锌、镁、锡、铜等;就其在各经济部门使用的广泛性而言,那么,无论是国防工业、机械工业、钢铁工业、化学工业、石油工业、电力工业,甚至食品工业及化妆品工业等都需广泛地应用缓蚀剂。由于在防蚀学的领域中日新月异地出现了许多新的问题(例如高压锅炉以及油井的腐蚀等),积极地寻找新品种的缓蚀剂或是研究更有效的复合缓蚀剂以及联合保护法(例如阴极保护法和缓蚀剂联用)就变成防蚀工作人员和腐蚀学者们的重要任务之一。另外,虽然有关缓蚀剂方面的文献相当丰富,但是 Using corrosion inhibitors to prevent corrosion - that is, adding a small amount of additives to the media to prevent corrosion - is one of the most widely used methods of preventing corrosion. For the medium it handles, there may be acidic solution, neutral solution, oil, steam, atmosphere, etc. For the metal to be protected there may be steel, iron, aluminum, zinc, magnesium, tin, copper, etc. ; For its extensive use in all economic sectors, it is necessary to extensively apply corrosion inhibition in the defense industry, machinery industry, steel industry, chemical industry, petroleum industry, power industry and even the food industry and cosmetics industry Agent. Due to the rapid emergence of many new problems in the field of corrosion protection (such as high pressure boiler and well corrosion, etc.), actively looking for new varieties of corrosion inhibitors or research more effective compound corrosion inhibitor and joint protection law (Such as the combination of cathodic protection and corrosion inhibitor) becomes one of the important tasks for corrosion protection workers and corrosion scientists. In addition, although the literature on corrosion inhibitors is quite abundant,