Pengendalian Laju Korosi pada Baja API 5L Grade B N Menggunakan Ekstrak Daun Gambir (Uncaria gambir Roxb)

Authors

  • Eri Aidio Murti Jurusan Fisika FMIPA Universitas Andalas
  • Sri Handani Jurusan Fisika FMIPA Universitas Andalas
  • Yuli Yetri Politeknik Negeri Padang

DOI:

https://doi.org/10.25077/jfu.5.2.172-178.2016

Abstract

Telah dilakukan penelitian tentang pengendalian laju korosi pada baja API 5L Grade B N menggunakan ekstrak daun gambir dengan konsentrasi 0; 0,5; 1,0; 1,5 dan 2,0%. Medium korosif yang digunakan adalah NaCl dan H2SO4 1 M. Empat sampel direndam dalam medium korosif tanpa inhibitor, 4 sampel direndam pada medium korosif dengan penambahan inhibitor dan 4 sampel direndam dalam larutan inhibitor selama 24 jam, kemudian direndam di dalam medium korosif. Lama perendaman bervariasi yaitu 1, 5, 10 dan 15 hari Metode yang digunakan adalah metode kehilangan berat untuk menentukan laju korosi dan nilai efisiensi. Laju korosi berkurang dengan kenaikan konsentrasi inhibitor. Nilai efisiensi tertinggi mencapai 94,65% pada medium korosif NaCl 1 M dan 89,79% pada medium korosif H2SO4 1 M dengan kenaikan konsentrasi inhibitor 2%. Hasil foto SEM permukaan baja memperlihatkan permukaan baja dengan penambahan ekstrak daun gambir mengalami korosi lebih sedikit.

Kata kunci: baja API 5L Grade B N, efisiensi inhibisi, ekstrak daun gambir, inhibitor, laju korosi

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Published

2015-04-01

How to Cite

Murti, E. A., Handani, S., & Yetri, Y. (2015). Pengendalian Laju Korosi pada Baja API 5L Grade B N Menggunakan Ekstrak Daun Gambir (Uncaria gambir Roxb). Jurnal Fisika Unand, 5(2), 172–178. https://doi.org/10.25077/jfu.5.2.172-178.2016

Issue

Vol. 5 No. 2 (2016)

Section

Articles

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Copyright (c) 2015 Eri Aidio Murti, Sri Handani, Yuli Yetri

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