화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.26, 182-192, June, 2015
DOI10.1016/j.jiec.2014.11.029  Export Citation
Ascorbic acid as corrosion inhibitor for Q235 mild steel in acidic environments
Maduabuchi A. Chidiebere1, 2, Emeka E. Oguzie2, Li Liu1, 3, Ying Li1, 3, †, and Fuhui Wang1, 3
  • 1Institute of Metal Research, Chinese Academy of Sciences, 62 Wencui Road, Shenyang 110016, China
  • 2Electrochemistry and Materials Science Research Laboratory, Department of Chemistry, Federal University of Technology, PMB 1526 Owerri, Nigeria
  • 3, China
E-mail:
The inhibition effect of ascorbic acid (AA) on mild steel corrosion in 1 M HCl and 0.5 M H2SO4 was estimated using electrochemical and surface probe techniques. Potentiodynamic polarization results showed AA to be a mixed type inhibitor in both acidic environments, whereas the impedance results revealed adsorption of the AA species on the steel surface. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) studies revealed the formation of a protective film adsorbed AA on the steel surface. Quantum chemical calculations were used to confirm the ability of AA to adsorb on a steel surface.
Keywords:Mild steel;Corrosion;Inhibition;Adsorption;Impedance;Polarization
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