聂金艳,司云森,余强,王招娣.酸性介质中N,N-二苯基硫脲和硫脲对A3钢的缓蚀作用对比研究[J].表面技术,2010,39(1):51-55.
NIE Jin-yan,SI Yun-sen,YU Qiang,WANG Zhao-di.Contrast Study on the Inhibitive Effect of N,N-diphenyl Thiourea and Thiourea on the Corrosion of A3 Steel in Acid Medium[J].Surface Technology,2010,39(1):51-55
酸性介质中N,N-二苯基硫脲和硫脲对A3钢的缓蚀作用对比研究
Contrast Study on the Inhibitive Effect of N,N-diphenyl Thiourea and Thiourea on the Corrosion of A3 Steel in Acid Medium
投稿时间:2009-09-01  修订日期:2010-02-10
DOI:
中文关键词:  A3钢  N,N-二苯基硫脲  硫酸介质  缓蚀作用
英文关键词:A3 steel  N,N-diphenyl thiourea  Sulphuric acid  Inhibitive effect
基金项目:
作者单位
聂金艳 昆明理工大学,昆明650093 
司云森 昆明理工大学,昆明650093 
余强 昆明理工大学,昆明650093 
王招娣 昆明理工大学,昆明650093 
AuthorInstitution
NIE Jin-yan Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China 
SI Yun-sen Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China 
YU Qiang Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China 
WANG Zhao-di Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China 
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中文摘要:
      采用动电位扫描极化曲线、交流阻抗法和量子化学法,研究了N,N-二苯基硫脲(DPH-TU)在5%H2SO4介质中对A3钢的缓蚀作用及缓蚀机理,计算出了相应吸附过程的热力学数据,并与硫脲进行了对比。研究表明:N,N-二苯基硫脲是一种缓蚀效果显著的混合型缓蚀剂,它在A3钢表面发生化学吸附,吸附过程为放热过程,吸附行为服从El-Awady动力学模型,其缓蚀效果明显优于硫脲。
英文摘要:
      The inhibitive behavior and mechanism of N,N-diphenyl thiourea(DPH-TU)on the corrosion of A3 steel in 5%H2SO4medium were studied using polarizationcurves measurements, electrochemical impedance spectroscopy (EIS)and quantum chemistry methodsin order to investigate the inhibitive effect of DPH-TUin H2SO4solution and providing important theoretical reference to the actual production as corrosion inhibitor. The results show that DPH-TU is an effective and mixing type inhibitor. It is suggested that the adsorption of DPH-TU on A3 mild steel be chemosorption and exothermic reaction. The corresponding thermodynamic parameters of the adsorption process forDPH-TUare calculated according to the El-Awady kinetic model.Compared with the thiourea, the inhibition effect of DPH-TUis superior to thiourea.
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