Aplikasi Ekstrak Biji Jambu (Psidium Guajava) Sebagai Inhibitor Organik Pada Baja API 5L Grade B Dalam Media H2SO4 1M

Fauziyah, Fatnika (2017) Aplikasi Ekstrak Biji Jambu (Psidium Guajava) Sebagai Inhibitor Organik Pada Baja API 5L Grade B Dalam Media H2SO4 1M. Diploma thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Korosi adalah proses perubahan sifat suatu bahan akibat pengaruh atau reaksi dengan lingkungan sekitarnya yang cencerung menurunkan kualitas sifat material. Salah satu cara pengendaliannya adalah dengan penambahan inhibitor. Inhibitor organik merupakan inhibitor yang dianggap ramah lingkungan. Dalam penelitian ini digunakan ekstrak biji jambu sebagai inhibitor organik, dengan material pengujian yang digunakan berupa baja API 5L grade B. Untuk media korosifnya H2SO4 1 M dengan variasi kosentrasi 0-6 ml. Jenis pengujian yang dilakukan pada penelitian ini adalah EIS, FTIR, dan weight loss. Hasil pengujian menunjukkan adanya penurunan laju korosi pada API 5L grade B ketika ditambah inhibitor. Pada uji Polarisasi Potensiodinamik nilai laju korosi tanpa inhibitor sebesar 75,018 mmpy sedangkan dengan inhibitor 2,8845 mmpy dan efisiensi inhibisinya sebesar 96,155%. Pada pengujian Weight Loss efisiensi yang dihasilkan sebesar 90,130%. Pengujian pendukung lainnya (FTIR) menunjukkan inhibitor bersifat campuran yang dominan katodik. ============= Corrosion is the process of changing the properties of a material due to the influence or reactions with its surroundings that tend to lower the quality of the material properties. One way to inhibit corrosion is by adding an inhibitor. Organic inhibitors is an inhibitor that is considered environmentally friendly. In this study used guava seeds extract as an inhibitor of organic material, with testing that is used in the form of steel API 5L grade B. For corrosive solution is used H2SO4 1 M with the variation of concentrations of 0-6 ml. The type of testing method that used in this study is EIS, FTIR, and weight loss The test results showed a decrease in the corrosion rate on steel API 5L grade B when added inhibitor. Potensiodinamic Polarization value test on the corrosion rate without added inhibitor is 75.018 mmpy whereas with inhibitor is 2.8845 mmpy and inhibition efficiency is 96.155%. The result of Weight Loss test, the efficiency is 90,130% The other supporting method (FTIR) indicates the dominant nature of the inhibitor is cathodic.

Item Type: Thesis (Diploma)
Uncontrolled Keywords: Korosi; Biji Jambu; Inhibitor Organik; Polarisasi Potensiodinamik; Weight Loss; FTIR; Corrosion; Organic Inhibitor; Guava Seeds
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives
T Technology > TJ Mechanical engineering and machinery > TJ217.6 Predictive Control
Divisions: Faculty of Industrial Technology > Mechanical Engineering > (D3) Diploma
Depositing User: Fauziyah Fatnika
Date Deposited: 23 Apr 2018 03:38
Last Modified: 23 Apr 2018 03:38
URI: http://repository.its.ac.id/id/eprint/49399

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