Open AccessThe effect of Theobroma Cacao peels extracts inhibitors on mild steel fatigue behaviour
Author(s) -
Yuli Yetri,
Rakiman,
B. Gunawarman,
M. D. Hanif
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1450/1/012089
Subject(s) - corrosion , theobroma , immersion (mathematics) , materials science , adsorption , metallurgy , composite material , chemistry , organic chemistry , horticulture , mathematics , pure mathematics , biology
This research relates with polar extract of Theobroma cacao peels as an inhibitor for corrosion to improve the fatigue properties of steel. The polar extract of cacao added varies from 5 percent to 2.5 percent, with 1.5M HCl corrosive media, and 32 days immersion time. To see the effect of corrosion, the steel is immersed in solution of HCl which has been added corrosion inhibitors. The results obtained were characterized by AFM, SEM, Energy Dispersive X-Ray, and fatigue strength testing using the ASTM E4662002 procedure. The results of adsorption during immersion showed that inhibitors were able to reduce the corrosion rate and increase inhibitory efficiency, thereby increasing the fatigue properties of mild steel. Surface analysis shows that surface topography looks smoother, because of adsorption on the surface in the form of a film layer that can decrease the corrosion attack. This smooth surface seems effective to avoid initiation of cracks on the surface of steel. Immersion of steel for 32 days in solution HCl 1.5M with 2.5 percent addition of cacao peels polar extract of are very effective to minimize corrosion attacks on surface of steel, then is able to recovery the fatigue properties of mild steel.