Pemanfaatan Ekstrak Biji Feun Kase (Thevetia peruviana) sebagai Inhibitor Korosi Logam Seng dalam Media HCl

Feun Kase seed extract can be used as a corrosion inhibitor on zinc metal in HCl solution. This study aims to determine the secondary metabolites contained extract, inhibition efficiency and rate, surface morphology of process using media. was obtained by maceration extraction methanol. In test, concentration temperature variations were carried out effect rate per year. The results showed that methanol seeds alkaloids, flavonoids saponins. optimum at an 30 ppm 82.70% with 5.80 mm/year 35ºC 75.84% 7.28 test increasing medium. morphological analysis plate SEM instrument without treatment (not immersed media) still smooth. is indicated which clearly visible because it has not been affected when media, damaged presence pores or holes. Zinc added but damage prominent media inhibitor.