EFEKTIVITAS EKSTRAK DAUN SIRSAK SEBAGAI INHIBITOR PADA BAJA KARBON API 5L DALAM LARUTAN NaCl 3%
Abstract: The effectiveness of
soursop leaves extract as inhibitor on carbon steel API 5L in NaCl 3% had been
researched. Carbon steel API 5L submersion used NaCl 3% had been done for 144
hours with various concentrations of soursop leaves extract inhibitor adding
0%, 5%, 10%, 15%, 20%, 25%, 30%, and 35%. The research of corrosion rate was
done by weight loss and electrochemistry methods. The result showed that the
higher percentage of soursop leaves extract inhibitor used, the corrosion rate
will decrease and capability of inhibit corrosion will increase. The greatest
effectiveness of corrosion occurred at concentration of 35% in NaCl 3% and the
effectiveness is 86,16%. The X-Ray Diffraction (XRD) characterization result
showed that the phase formed is pure Fe. Scanning Electron Microscopy (SEM)
characterization showed uneven clusters and smaller size, fewer holes and
cracks too with soursop leaves extract inhibitor 35% than soursop leaves
extract inhibitor 0%. Energy Dispersive Spectroscopy (EDS) characterization on
sample with inhibitor 0% obtained Cl element.
Penulis: Apriyanto Supriyo
Giri, Ediman Ginting, S Suprihatin
Kode Jurnal: jpfisikadd170093
