Electrochemical synthesis of poly 3-amino-5-hydroxypyrazole (PAHP) on copper electrode surface was carried out by cyclic voltammetry technique in 0.03 M 3-amino-5-hydroxypyrazole solution containing 0.3 M oxalic acid. The formation of dark brown PAHP on copper surface was characterized by cyclic voltammetry, FTIR and scanning electron microscopy techniques. The corrosion characteristics of copper/PAHP electrode were evaluated by electrochemical methods and electrochemical impedance spectroscopy in 3.5% NaCl solution. The obtained results indicated that PAHP thin film coating was an excellent inhibitor and controlled copper corrosion against corrosive agents in 3.5% NaCl solution.

通过循环伏安法在含0.3 M草酸的0.03 M 3-氨基-5-羟基吡唑溶液中，在铜电极表面进行电化学合成聚3-氨基-5-羟基吡唑（PAHP）。通过循环伏安法，傅立叶变换红外光谱（FTIR）和扫描电子显微镜技术表征了铜表面暗褐色PAHP的形成。通过电化学方法和电化学阻抗谱在3.5％NaCl溶液中评估了铜/ PAHP电极的腐蚀特性。获得的结果表明，PAHP薄膜涂层是一种优异的抑制剂，可控制3.5％NaCl溶液中铜对腐蚀剂的腐蚀。