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Materials Science

, Volume 51, Issue 1, pp 131–137 | Cite as

Corrosion-Resistant Properties of the Extracts of Plant Raw Materials in Solutions of Hydrochloric Acid

  • Ya. М. Khaburs’kyi
Article
  • 53 Downloads

We develop a procedure for efficient extraction from oak bark (Quercus Robur) and chips and tea leaves (Camellia Sinensis). The influence of these extracts on the corrosion-electrochemical properties of 20 steel in a 5% hydrochloric acid solution is studied. It is shown that the efficiency of inhibitors increases with their concentrations in acid solutions and holding time. The results of massmetric tests are used to compute the activation energy, which reveals a noticeable retardation of corrosion processes in the inhibited media. According to the results of electrochemical calculations, the adsorption of both extracts on the steel surface can be described by the Langmuir isotherm.

Keywords

green inhibitors rate of acid corrosion degree of protection corrosion current activation energy 

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Karpenko Physicomechanical InstituteUkrainian National Academy of SciencesLvivUkraine

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