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.
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