引用本文:
张红红, 谢彦, 刘元伟, 杨仲年. 盐酸介质中水杨醛缩氨基硫脲对碳钢的缓蚀作用[J]. 应用化学,
2015, 32(6): 720-725.
doi:
10.11944/j.issn.1000-0518.2015.06.140317
Citation: ZHANG Honghong, XIE Yan, LIU Yuanwei, YANG Zhongnian. Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by Salicylaldehyde Thiosemicarbazone[J]. Chinese Journal of Applied Chemistry, 2015, 32(6): 720-725. doi: 10.11944/j.issn.1000-0518.2015.06.140317
Citation: ZHANG Honghong, XIE Yan, LIU Yuanwei, YANG Zhongnian. Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by Salicylaldehyde Thiosemicarbazone[J]. Chinese Journal of Applied Chemistry, 2015, 32(6): 720-725. doi: 10.11944/j.issn.1000-0518.2015.06.140317
盐酸介质中水杨醛缩氨基硫脲对碳钢的缓蚀作用
English
Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by Salicylaldehyde Thiosemicarbazone
Abstract:
A Schiff base corrosion inhibitor named salicylaldehyde thiosemicarbazone(ST) was synthesized.The inhibition effect of ST on the mild steel(MS) in 1 mol/L HCl solution was investigated by mass loss measurements,potentiodynamic polarization and electrochemical impedance spectroscopy. Meanwhile,the surface morphology was observed by scanning electron microscopy. The results show that ST has an excellent inhibiting effect for Q235 steel in the HCl solution. ST acts as a good inhibitor,predominantly retarding with cathodic reaction through adsorption on a MS surface. The adsorption of ST on Q235 steel surface obeys the Langmuir adsorption isotherm.
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Key words:
- corrosion inhibitor
- / Schiff base
- / mild steel
- / electrochemical impedance spectroscopy
- / acid corrosion
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