الفهرس 
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Abstract
Corrosion isthe deterioration or the destructive attack of metal or alloy through chemical or electrochemical reaction with the surrounding environment.The corrosion costs in most of the countries are in the range of 2-4% of the gross national product and contribute to the depletion ofthe natural resources of materials and energy[1]. Thus, it becomes vital to have efficient utilization of existing raw materials and optimum conservation of fabricated metallic structures.Steel, copper, aluminum, nickel, zinc, and stainless steel have various industrial applications and are susceptible to different forms of corrosion during exposure to different corrosive media. Carbon steel and copper are used widely in petrochemical industry because of their physicochemical and metallurgical characteristics. Steel is continuously used as the work horse for structures such as buildings, bridges and pipelines & towers for petroleum refining. Copper is widely used in fabrication of semiconductor microchips via forming copper oxide surface films by employing an oxidizer like H2O2 and subsequently dissolving these oxides at controlled rates with acetic acid [2]. Recently, acetic acid in combination with H2O2 can support the functions of copper microchips in acidic/neutral media in the presence of corrosion inhibitor [3].