MATEC Web of Conferences (Jan 2018)

The inhibitive effect of tannin in Psidium guajava leaves towards 304SS corrosion in concentrated HCl

  • Ganda Andita N. F.,
  • Andoko,
  • Setyarini P. H.,
  • Gapsari Femiana

DOI
https://doi.org/10.1051/matecconf/201820405018
Journal volume & issue
Vol. 204
p. 05018

Abstract

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Tannin isolated from Psidium guajava leaves are developed to enhance the corrosion protection of austenitic stainless steel. It is used as a green inhibitor, extracted from Psidium guajava which grow in East java, Indonesia. In the present work, the corrosion inhibition properties of the tannin inhibitors were investigated in 3M HCl by polarization potentiodynamic measurements. The result reveals that tannin 1g/L could enhance the inhibition efficiency up to 91.81%.