Yanuar, Ardi Prasetia (2016) Pengaruh Penambahan Inhibitor Alami Terhadap Laju Korosi Pada Material Pipa Dalam Larutan Air Laut Buatan. Undergraduate thesis, Institut Teknologi Sepuluh Nopember Surabaya.
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Abstract
Korosi merupakan penurunan mutu logam akibat adanya reaksi elektrokimia dengan lingkungannya. Banyak faktor yang dapat menyebabkan korosi suatu material, salah satu diantaranya yakni pengaruh konsentrasi media korosi. Ada banyak metode untuk menghambat proses terjadinya korosi. Salah satu diantara banyak metode yaitu penggunaan inhibitor. Inhibitor organik salah satu jenis inhibitor yang bersifat non-toksik, murah, sudah tersedia di alam, mudah diperbaharui dan tidak merusak lingkungan. Inhibitor organik tersebut diperoleh dengan mengekstrak beberapa bahan yang ada di alam. Dalam penelitian ini inhibitor yang digunakan antara lain daun jambu biji, daun teh, kedelai dan kopi. Inhibitor tersebut digunakan pada material pipa baja dalam media air laut buatan yang memiliki kadar salinitas 35 ‰. Metode yang digunakan untuk mengambil data laju korosi baja menggunakan metode weight loss dan electroplating. Laju korosi paling kecil yakni sebesar 3.10 mpy untuk API 5L dan 1.94 mpy untuk ASTM A53 dengan inhibitor daun teh. Inhibitor yang kurang maksimal dalam menghambat laju korosi yaitu inhibitor kopi yakni 6.12 mpy untuk API 5L dan 2.66 mpy untuk ASTM A53. Nilai laju korosi spesimen API 5L dan ASTM A53 yang tidak menggunakan inhibitor masing-masing 50.26 mpy dan 3.83 mpy. Inhibitor teh memiliki nilai effisiensi mencapai 93.83%. Sedangkan daun jambu biji memiliki nilai effisiensi mencapai 93.45%. Nilai effisiensi inhibitor kedelai mencapai 91.72% dan inhibitor kopi memiliki nilai effisiensi paling rendah hanya mencapai 87.83%
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Corrosion is a decreasing metal quality due to the electrochemical reaction with its environment. Many factors can cause corrosion of a material, one of those are caused by media concentration. There are many methods to inhibit the corrosion process. One of many methods is namely corrosion inhibitors. Green corrosion inhibitors are non-toxic, inexpensive, readily available in nature, renewable and does not damage the environment. Green corrosion inhibitor obtained by extracting some materials that exist in nature. In this experiment, inhibitor which is used are from guava leaves, tea leaves, soybeans and coffee. The inhibitors used in materials steel pipe in artificial seawater media that has levels of salinity of 35 ‰. The method to obtain corrosion rate data are weight loss and electroplating. The lowest corrosion rate is 3.10 mpy for API 5L and 1.94 mpy for ASTM A53 inhibitor with tea leaves. The inhibitor which not perform well with the rate of corrosion inhibitors 6.12 mpy for API 5L and 2.66 mpy for ASTM A53 is coffee. The value of the rate of corrosion of the specimen API 5L and ASTM A53 who do not use inhibitors is 50.26 mpy and 3.83 mpy. The tea leaves have the value inhibitors efficiency which reached 93.83%. While the leaves of guava have the value of efficiency reached 93.45%. The value of efficiency reached 91.72% soybean inhibitor and inhibitor of coffee have the lowest efficiency value that reaching only 87.83%
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSKe 620.112 23 Yan p |
| Uncontrolled Keywords: | Daun Jambu Biji, Daun Teh, Electroplating, Inhibitor, Kedelai, Kopi, Korosi, Weight Loss |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives T Technology > TA Engineering (General). Civil engineering (General) > TA467 Iron and Steel Corrosion and protection against corrosion |
| Divisions: | Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis |
| Depositing User: | EKO BUDI RAHARJO |
| Date Deposited: | 22 Apr 2020 00:44 |
| Last Modified: | 22 Apr 2020 00:44 |
| URI: | http://repository.its.ac.id/id/eprint/75871 |
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