Effect of voltaren drug and voltaren expired drug as a corrosion inhibitor for aluminium in acid solutions

In different industries organic compounds are used as corrosion inhibitor in acid solution. Organic compounds are highly cost and it may not be economical to use .organic inhibitors make a thin layer on the metal s surface that may absorb on the cathode or anode surface or both. Decrease corrosion rate. This article discuss about some organic drug that has been used as an inhibitor of corrosion. These drug compounds has been used in two types: drug and expired drug. This method decrease the cost in corrosion field . In this experiment EIS test has been used to major the polarization resistance and the capacity of electrical double layer. The drug has been used with these concentrations 500-100-1500ppm. Drug voltaren with the concentration of 1500 ppm was the best inhibitor among other compounds. And it has been observed that the active type of the drug works better as an inhibitor than another type.

کلیدواژه ها:

inhibitor of corrosion ، voltaren ، aluminium ، drug ، expired drug