This research studied the inhibition of corrosion by bawang dayak leaves extract (EleutherineamericanaMerr.) on API 5L steel in brine water environment (3.5% NaCl). The inhibitor was extracted using maceration process from bawang dayak leaves that was cultivated in Paser District, East Kalimantan. The test of antioxidant activity showed that bawang dayak leaves extract is a very powerful antioxidant with IC50 value of 27.30204. The results from FTIR test show the presence of electronegative atoms and double bonds of the alkenes groups that provide the potential of the extract as a corrosion inhibitor. Efficiency of inhibition reached up to 93.158% for the addition of inhibitor with 300 ppm concentration and 20 days of immersion time. This inhibitory behavior is also supported by polarization measurements where the lowest corrosion rate of 0.00128 mm/year is obtained at the same concentration and immersion time.
|Title of host publication
|Proceedings of the International Seminar on Metallurgy and Materials, ISMM 2017
|Subtitle of host publication
|Metallurgy and Advanced Material Technology for Sustainable Development
|M. Yunan Hasbi, Daniel Panghihutan Malau, Dhyah Annur, M. Ikhlasul Amal, Satrio Herbirowo, Yulinda Lestari
|American Institute of Physics Inc.
|Published - 15 May 2018
|1st International Seminar on Metallurgy and Materials: Metallurgy and Advanced Material Technology for Sustainable Development, ISMM 2017 - Jakarta, Indonesia
Duration: 24 Oct 2017 → 25 Oct 2017
|AIP Conference Proceedings
|1st International Seminar on Metallurgy and Materials: Metallurgy and Advanced Material Technology for Sustainable Development, ISMM 2017
|24/10/17 → 25/10/17