硫酸介质中2-氨基-5-苯基-1,3,4-噻二唑对碳钢的缓蚀作用  

Inhibition of 2-Amino-5-Phenyl-1,3,4-Thiadiazole on Mild Steel in H_2SO_4 Media

作　　者：杨晓远[1] 唐永明[1] 杨文忠[1] 万嵘[1] 

机构地区：[1]南京工业大学理学院,南京210009

出　　处：《腐蚀科学与防护技术》2010年第5期431-434,共4页Corrosion Science and Protection Technology

摘　　要：采用动电位极化曲线和电化学阻抗谱研究了2-氨基-5-苯基-1,3,4-噻二唑(APT)在0.5mol/L硫酸中对碳钢的腐蚀抑制作用.结果表明,APT为混合型缓蚀剂,其在碳钢表面的吸附为化学吸附,阻抗参数的变化表明APT吸附在碳钢表面,形成保护膜,其吸附方式遵循Langmuir吸附等温式,并且吸附自发进行.2-Amino-5-phenyl-1,3,4-thiadiazole（APT） has been studied as an inhibitor for corrosion of mild steel in 0.5 mol/L H_2SO_4 using potentiodynamic polarization and electrochemical impedance spectroscopy（EIS）.The electrochemical measurements indicate that the compound acts as a mixed type inhibitor and the mechanism of adsorption on mild steel is chemisorption.The spontaneous adsorption of APT is found to obey the Langmuir adsorption isotherm.

关 键 词：缓蚀剂 碳钢 极化曲线 电化学阻抗 

分 类 号：TG174.42[金属学及工艺—金属表面处理]