一、前言汽车、铁道机车车辆、船舶等内燃机冷却系统的腐蚀问题是众所周知的,内燃机、热交换器及其它部件往往受到水、防冻液(乙二醇)或海水的腐蚀。所用的冷却水缓蚀剂往往因温度、流速和压力的影响而破坏其防蚀机能,从而发生意想不到 I. INTRODUCTION The corrosion problems of internal combustion engine cooling systems such as automobiles, railway rolling stock and ships are well known. Internal combustion engines, heat exchangers and other components are often corroded by water, antifreeze (ethylene glycol) or seawater. The use of cooling water corrosion inhibitors often due to temperature, flow rate and pressure of the destruction of its anti-corrosion function, resulting in unexpected