PENGENDALIAN LAJU KOROSI BAJA ST-37 DALAM MEDIUM ASAM KLORIDA DAN NATRIUM KLORIDA MENGGUNAKAN INHIBITOR EKSTRAK DAUN TEH (CAMELIA SINENSIS)

Authors

  • Desi Mitra Sari Jurusan Fisika Universitas Andalas
  • Sri Handani Jurusan Fisika Universitas Andalas
  • Yuli Yetri Jurusan Fisika Universitas Andalas

DOI:

https://doi.org/10.25077/jfu.2.3.%25p.2013

Abstract

Penelitian tentang pengendalian laju korosi baja St-37 dalam medium asam klorida dan natrium klorida menggunakan inhibitor ekstrak daun teh (Camelia sinensis) telah dilakukan. Metode yang digunakan adalah metode potensiodinamik untuk melihat nilai arus korosi, dan metode kehilangan berat untk melihat nilai laju korosi. Medium korosif yang digunakan adalah HCl 3 % dan NaCl 3 %.  Baja direndam di dalam medium korosif dengan penambahan dan tanpa penambahan inhibitor. Variasi konsentrasi inhibitor yang digunakan adalah dari 1 % hingga 10 % dengan lama perendaman selama empat hari. Semakin besar konsentrasi inhibitor yang ditambahkan maka nilai laju korosi akan semakin menurun dan nilai efisiensi inhibisi korosi semakin tinggi. Nilai efisiensi terbesar didapatkan pada penambahan konsentrasi inhibitor 10 % untuk medium korosif HCl mencapai 86,3 % dan untuk medium korosif NaCl mencapai 92 %. Hal ini menunjukan bahwa inhibitor ekstrak daun teh sangat efisien dalam mengendalikan laju korosi dalam medium korosif HCl dan NaCl. Dari analisis foto optik morfologi permukaan baja St-37 memperlihatkan permukaan baja dengan penambahan ekstrak daun teh  mengalami korosi  lebih sedikit.

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Published

2013-11-01

How to Cite

Sari, D. M., Handani, S., & Yetri, Y. (2013). PENGENDALIAN LAJU KOROSI BAJA ST-37 DALAM MEDIUM ASAM KLORIDA DAN NATRIUM KLORIDA MENGGUNAKAN INHIBITOR EKSTRAK DAUN TEH (CAMELIA SINENSIS). Jurnal Fisika Unand, 2(3). https://doi.org/10.25077/jfu.2.3.%p.2013

Issue

Vol. 2 No. 3: Juli 2013

Section

Articles

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Copyright (c) 2013 Desi Mitra Sari, Sri Handani, Yuli Yetri

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