合成三种水溶性取代吡啶甲酰腙席夫碱缓蚀剂,采用静态失重法、电化学方法和扫描电镜研究其在3.5%NaCl介质中对铜的缓蚀作用.结果表明,三种缓蚀剂都是以抑制阴极为主的混合型缓蚀剂;当温度在35℃、缓蚀剂质量浓度为75 mg/L时,缓蚀效率最高,在缓蚀过程中未发生分解.三种缓蚀剂对铜在3.5%NaCl溶液中均具有较好的缓蚀效果. Three kinds of water-soluble substituted pyridine formyl hydrazone Schiff base inhibitors were synthesized and the corrosion inhibition effect on copper in 3.5% NaCl medium was studied by static weight loss method, electrochemical method and scanning electron microscope.The results showed that three kinds of corrosion inhibition The inhibitors were all mixed inhibitors based on cathodic suppression. When the temperature was 35 ℃ and the concentration of inhibitor was 75 mg / L, the corrosion inhibition efficiency was the highest and did not decompose during the corrosion inhibition. The etchant has a good corrosion inhibition effect on copper in 3.5% NaCl solution.