L, Anggraini and Emriadi, Emriadi and Y., Stiadi and S., Zulaiha and H., Pardi Stainless 37 Steel Corrosion Inhibition in a Hydrochloric Acid Solution with Senggani (Melastoma Candidum D. Don) Leaf Extract. Portugaliae Electrochimica Acta. ISSN 0872-1904 (Submitted)

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Abstract

SLE (Melastoma candidum D. Don) was tested as an inhibitor of St-37 S corrosion in a HCl solution, using WL, PDP and SEM analysis methods. CR has decreased with SLE addition, according to the WL method. The highest IE(%) was 67%, with 0.8% SLE addition. Rise in T had a decreasing effect on IE(%). PDP showed that the extract was a mixed inhibitor. SEM analysis showed changes in the St-37 S surface immersed in HCl, without and with the inhibitor. SLE adsorption onto the steel surface obeyed Langmuir’s isotherm.

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