Penurunan Laju Korosi Logam Aluminium Menggunakan Inhibitor Alami
DOI:
https://doi.org/10.30872/cmg.v2i1.2612Abstract
Korosi merupakan penurunan kualitas logam yang dipengaruhi oleh lingkungan. Korosi tidak dapat
dihindari namun dapat dihambat dengan cara seperti penambahan zat inhibitor. Dalam penelitian ini
dilakukan studi laju korosi pada logam aluminium dengan cara menambahkan zat yang berfungsi sebagai inhibitor alami yakni ekstrak daun karamunting (Rhodomyrtus tomentosa) ke dalam media korosif HCl 1 M dengan metode imersi. Studi laju korosi ini bertujuan untuk mempelajari pengaruh inhibitor yang digunakan untuk mengurangi laju korosi pada aluminium, mengetahui efisiensi inhibisi serta model adsorpsi inhibitor. Berdasarkan hasil analisis dengan metode gravimetri diperoleh bahwa ekstrak daun karamunting memiliki efek inhibisi dengan efisiensi tertinggi sebesar 91,74 % pada waktu 10 menit perendaman dengan konsentrasi inhibitor 200 ppm dan dengan permodelan adsorbsi Langmuir
diperoleh koefisien korelasi sebesar 0,9775.
Kata kunci: inhibitor, alumunium, korosi
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