THE INFLUENCE OF REINFORCED PERCENTAGE OF IRON OXIDES ON ITS ABILITY UTILIZE OF ALUMINUM SCRAP AS SACRIFICIAL ANODES IN CATHODIC PROTECTION

Abstract

The research is to recycle the aluminum residues into cathodic protection electrodes (Sacrificial Anodes) after producing a composite material reinforced by ceramic material with three weight ratios (1%, 1.5% & 2% wt). The ceramic reinforcement material is iron oxides (Fe₃O₄ & Fe₂O₃), cathodic protection (Without Impressed current) to protect the steel X20 was used in the oil fields. It was observed from polarization test (Tafel Extrapolation) in (3.5%NaCl) solution that the corrosion current density of the steel X20 is 1.95 mA / Cm², which is much more corrosive than the aluminum alloy (1100ASM) and the composite materials without cathodic protection .The composite material reinforced by (1%Wt) of iron oxides gave the optimum protection for steel as a sacrificial anode among the other protection electrodes such as (aluminum alloy 1100ASM) and the composite materials reinforced by (1.5% & 2% Wt)  of  iron oxides. In the traditional weight loss method, the corrosion rate of steel X20 was reduced from 0.00112gmd to 0.00025 gmd due to the sacrificial anode reinforced by (1%Wt).