EKSTRAK METANOL DARI DAUN MAHKOTA DEWA (Phaleria macrocarpa) SEBAGAI INHIBITOR KOROSI BAJA DALAM ASAM KLORIDA
ABSTRACT: Extract of Phaleria
macrocarpa leaves have been studied as corrosion inhibitor for mild steel of hydrochloric
acid solution 2.0 N. The efficiency of inhibition was evaluated by gasometric
method and electrochemical analysis. The temperature and concentration effects
on the inhibitors performance were also investigated. The result obtained
showed that the extract is one of promising candidate as an inhibitors for the
corrotions of mild steel in HCl media, inhibition efficiency increase as the
extract concentration is evaluated. The activation energy (Ea) increase with
the addition of the extract. Where inhibition of extract on the steel surface
obey modified Langmuir isotherm equation. Potentiodynamic polarization curve
indicated the Phaleria macrocarpa leaves extract play role as the anodic type
inhibitor.
Penulis: Azimatur Rahmi,
Emriadi, dan Admin Alif
Kode Jurnal: jpkimiadd140691
