Study of corrosion behavior of Al(CuFeCo) nanoparticles insolution using EIS and LPR

摘要

The results of the evaluation of corrosion behavior of Al(CuFeCo) nanopartícles insolution by means of electrochemical impedance spectroscopy (EIS) and linearpolarization resistance (LPR) are reported. Mechanical alloyed intermetalliccompounds were obtained using elemental powders of Al (99.99%) Fe (99.99%) Cu(99.99%) and Co (99.99%) and then mechanically milled. The obtained powderswere chemically and structurally characterized using transmission electronmicroscopy. Different pH aqueous solutions in which Al(CuFeCo) nanopartícles are insuspension were used in EIS and LPR test, varying the solution temperature. EISand LPR data were analyzed as indicators for monitoring the icorr of nanopartícles. Itwas found that the icorr behavior is directly related with pH and temperature of testsolution.