Corrosion inhibition of honeycomb waste extracts for 304 stainless steel in sulfuric acid solution

Femiana Gapsari, Kartika A. Madurani, Firman Mangasa Simanjuntak, Andoko Andoko, Hastono Wijaya, Fredy Kurniawan

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The extract of honeycomb waste was studied as a corrosion inhibitor on 304 stainless steel in H2SO4 solutions. The honeycomb waste was obtained from beekeeping at Lawang-Malang, East Java, Indonesia. Electrochemical and scanning electron microscopy methods were used to investigate the performance of the corrosion inhibition process. The inhibition efficiency of the inhibitor (2000 mg/L) reached 97.29% in 0.5 M H2SO4 and decreased with the acid concentration. Kinetic parameters were calculated to explain the effect of acid concentration on the inhibition process. The study on the adsorption behavior of the extracts followed the Frumkin isotherm model. The adsorption of the inhibitor on the 304 stainless steel surface was confirmed by the negative and lower values of Gibbs free energy. The obtained scanning electron microscopy (SEM) images were confirmed by comparing the surface of the specimens with and without inhibitor after corroding for one week. The results indicated that the extract acted as a good inhibitor for 304 stainless steel in acid corrosion.

Original languageEnglish
Article number2120
JournalMaterials
Volume12
Issue number13
DOIs
Publication statusPublished - 2019 Jul 1

Keywords

  • 304 stainless steel
  • Corrosion
  • Electrochemical
  • Honeycomb waste
  • Inhibitor

ASJC Scopus subject areas

  • Materials Science(all)

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