Abstract
The main objective of this study is to investigate the corrosion inhibition properties of Gardenia aqualla leaf extract on mild steel using weight determination loss method. The corrosion of mild steel was investigated at different concentrations of Gardenia aqualla at temperatures of 303, 313 and 323 K. G. aqualla inhibit corrosion rate of mild steel from 62.4 mm/yr to 6.5 mm/yr, 91.6 mm/yr to 16.6 mm/yr and 113.8 mm/yr to 28.4 mm/yr at 303, 313, and 323 K respectively. The optimum obtained yield in the inhibition efficiency is from 63.8% to 89.5%, 52.5% to 81.9% and 39% to 75% for the various temperatures respectively after an interval of 3 days being in contact in aqueous solution. Langmuir isotherm confirmed that physisorption occurred and it was found that inhibition occurred through adsorption of the constituents present in the leaf of G. aqualla obtained by phytochemical screening.
Highlights
An impending phenomenon that is widely experienced in our society, which affects the economy and the society is called corrosion
The summary of average weight loss, corrosion rate, inhibition efficiency (%), surface coverage (θ) and concentration/surface coverage are shown in table 2
This study has illustrated that Gardenia aqualla extract prevented the corrosion of mild steel in 1 M H2SO4 solution at different temperatures
Summary
An impending phenomenon that is widely experienced in our society, which affects the economy and the society is called corrosion. Its consequences arises when it damages the exterior surface of metals and most times leading to metallic part of an equipment’s or tools not working appropriately as expected. The corrosion phenomenon can be attributed to taking place in a number of processes. There is a reduction of the mass and thickness of the metal as a consequence of an attack on its surface. In the place of a whole surface attack, certain sites in the area of the metal could be affected, forming the accustomed localized corrosion. It takes place along grain boundaries or other spots on the metal that are weak because of a change in resistance to corrosive menace
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