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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 shu

Inhibition of Mild Steel Corrosion in Hydrochloric Acid Solution by Salicylaldehyde Thiosemicarbazone

1.
Department of Chemical Engineering, Binzhou University, Binzhou, Shandong 256600, China

Corresponding author: ZHANG Honghong, YANG Zhongnian,
Received Date: 15 September 2014
Available Online: 23 December 2014
Fund Project: 山东省自然科学基金项目(ZR2014BQ027,ZR2014EFQ007) (ZR2014BQ027,ZR2014EFQ007)滨州市科技发展计划(2013ZC0703) (2013ZC0703)滨州学院科研基金(2010Y04) (2010Y04)

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.
- corrosion inhibitor,
- Schiff base,
- mild steel,
- electrochemical impedance spectroscopy,
- acid corrosion
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