PENGARUH INHIBITOR EKSTRAK DAUN INAI (lawsonia inermis) TERHADAP LAJU KOROSI BAJA ST. 37 DIUKUR DENGAN METODE PENGURANGAN MASSA

Authors

  • Sri Handani
  • Sri Wildani
  • Emriadi -

DOI:

https://doi.org/10.25077/jrk.v4i1.148

Abstract

 Vol. 4, No. 1

ABSTRACT

 

The corrosion tests and micro structure analysis of St. 37 steel had been investigated. These investigation were conducted in nitric acid (HNO3). The range of concentration added was from 0-0.5 N with extract of henna leaves as inhibitors. The method used was losing mass by measuring loss mass of steel before and after corrosion. The boiling method was used to get the extract of henna leaves. Optical photo Carton Stereo Trinokuler were used for micro structure. Corrosion rate can be reduced by adding inhibitor and inhibition efficiency is measured if its ability to suppress corrosion. The result of the immersion tests show that the inhibition efficiencies are different on 0-0.5 N concentration are 81.96 %, 78.92 %, 53.74 %, 44.85 %, 44.45 % and 39.65 %. Addition of 50 g/1000 mL extrac of henna leaves results in the highest efficiency for HNO3 environment. The photo showed the surface structure of steel before corrosion, in layer with extract of henna leaves and after corrosion in medium nitric acid.

 

Keywords: Corrosion rate, Inhibition efficiency, Extract of henna leaves, Nitric acid.

   

Author Biographies

Sri Handani

   

Sri Wildani

   

Emriadi -

   

References

Widharto, Sri, Karat dan Pencegahannya, PT. Pradnya Paramita, Jakarta, 2001.

M.G. Fontana, Corrosion Engineering, 3rd ed Mc. Graw Hill Book Company, New York, 1987, 4; 14-31; 91; 304-313.

R.R. Pierre, Handbook Corrosion Engineering, New York, 1999.

I.L. Rozenfeld, Corrosion Inhibitor, 1st ed, Mc. Graw Hill Book Company, New York, 1981, 182; 191-192.

Mooryanti, Alam Sumber Kesehatan, Balai Pustaka, Jakarta, 1998.

K.R. Trethewey and J. Chamberlin, Korosi Untuk Mahasiswa Sains dan Rekayasawan, Alih Bahasa Alex Tri Kantjono Widodo, Gramedia Pustaka Utama, Jakarta, 15; 228; 282-283.

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Published

2015-02-12

How to Cite

Handani, S., Wildani, S., & -, E. (2015). PENGARUH INHIBITOR EKSTRAK DAUN INAI (lawsonia inermis) TERHADAP LAJU KOROSI BAJA ST. 37 DIUKUR DENGAN METODE PENGURANGAN MASSA. Jurnal Riset Kimia, 4(1), 73. https://doi.org/10.25077/jrk.v4i1.148

Issue

Vol. 4 No. 1 (2010): September

Section

Articles

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