3-氨基-1,2,4-三氮唑和Na_2WO_4复合缓蚀剂对黄铜的缓蚀协同作用

Complex of 3-Amino-1,2,4-Triazole and Na_2WO_4 as An Inhibitor for Brass Corrosion

应用交流阻抗和极化曲线测试3-氨基-1,2,4-三氮唑(ATA)和钨酸钠复合缓蚀剂对黄铜在3%NaCl溶液中的缓蚀作用.结果表明,ATA对黄铜有缓蚀作用,并以7.5 mg.L-1ATA的缓蚀效果最好,缓蚀率为87.46%,以7.5 mg.L-1ATA和0.15 mg.L-1Na2WO4配成复合缓蚀剂则对黄铜具有很好缓蚀协同效应,缓蚀效率达91.82%,属阴极型缓蚀剂.

AC impedance and polarization methods were used to study the inhibition effect of ATA and the complex of ATA and Na2WO4 for brass corrosion in 3% NaCl solution. The results indicated that ATA had inhibition effect for brass corrosion. ATA showed the best inhibition effect for brass corrosion at the ATA concentration of 7.5 mg · L^-1 , and the inhibition efficiency was 87.46%. At the ATA concentration of 7.5 mg · L^-1 and at the Na2WO4 concentration of 0.15 mg · L^-1, the complex showed optimum inhibition effect for brass corrosion, and also showed synergistic effect and the inhibition efficiency reached 91.82%. The complex of ATA and Na2WO4 was cathodic corrosion inhibitor.