Marlian, Alfarizi (2025) Perbandingan Efisiensi Perlindungan Korosi Pada Baja Galvanis Dan Baja Karbon A-36 Dengan Penambahan Inhibitor. Other thesis, Universitas Islam Riau.

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Abstract

Galvanized steel is zinc-coated steel (Zn) containing zinc with a high purity level (99.7%) plus a certain amount of black lead and aluminum processed under oxidation-free conditions to produce zinc-coated steel with reliable quality. There are various methods that have been done to reduce the rate of corrosion in metals, one of which is by adding corrosion inhibitors. Guava trees are one type of plant that can be used as a corrosion inhibitor because they contain tannins in their leaves. This study aims to obtain the effect of inhibitors on the rate of corrosion in peat water media. The method of measuring the corrosion rate used is the weight loss method. The materials used in this study were galvanized steel and A-36 carbon steel which were given varying inhibitors, namely 7%, 9%, 11% and were soaked for 25 days. The results of the study of galvanized steel and A-36 carbon steel in peat water media and the addition of guava leaf extract as an inhibitor showed that the inhibitor had a significant effect on the corrosion rate, as can be seen from the lowest corrosion rate value in galvanized steel of 0.045 mm/y with an inhibitor concentration of 9% and the lowest corrosion rate value in A-36 carbon steel of 0.076 mm/y with an inhibitor concentration of 11%

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