Abstract
At the present time the use of corrosion inhibitors is a good solution to maintain or reduce the corrosion problems in the equipment, so nowadays the production of inhibitors all non-toxic, natural and cheap is the most important demand. In this study dry olive leaves extraction used as inhibitor in a temperatures similar to the average temperature in Iraq, so as to bring the picture of reality as much as possible, at (25 °C and 45 °C) and solution was prepared in the following concentration to stimulate the field environment for oil extracting 19.2 % of sodium chloride (NaCl), 8% of calcium chloride (CaCl), 1.08 % of magnesium chloride (MgCl) and saturated with Co2 gas, the corrosion rate of steel sample was measured be using a potentiostat device with reference of calomel electrode. The result was, the dry olive leaves extract is an effective inhibitor material. Dry olive leaves extraction inhibitor has a low corrosion rate at 25OC and 45OC and the Corrosion rate decrease with increasing temperature for oil extraction solution, From the EDS test found that high percentage of carbon and oxygen caused to produce many compounds like the phenolic compound of the olive leaves is the responsible of inhabitation effect of the olive leaves.
Highlights
In most industries whose facilities are constituted by metallic structures, the phenomenon of corrosion is invariably present
The oil industry in Mexico is one of the most affected by corrosion because this phenomenon exerts its effects from the very moment of oil extraction on, causing a constant struggle against it [3]
Electrochemical Tafel test method, Electrochemical Impedance Spectroscopy, optical microscope examination m Fourier Transform Infrared-spectroscopy analysis and Energy Dispersive X-Ray Analysis (EDX)were used in order to detect the effect of dry olive leaves powder with different temperature on mild steel samples corroded in oil extraction solution
Summary
In most industries whose facilities are constituted by metallic structures, the phenomenon of corrosion is invariably present. This problem originates very important material and economic losses due to partial or total replacement of equipment and structures, and plantrepairing shutdowns [1]. The use of corrosion inhibitors (CIs) constitutes one of the most economical ways to mitigate the corrosion rate, protect metal surfaces against corrosion and preserve industrial facilities. Inorganic CIs are those in which the active substance is an inorganic compound This is one of the simplest ways to improve the passivity of a metal by adding electropositive metal salts to the medium. There are inorganic anions providing passivation protection to metal surfaces through their incorporation into the oxide layer; the most widely used of these are: chromate (CrO42-), nitrate (NO2-), molybdate (MoO3-), phosphate (H2PO3-) and silicates [6]
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