Abstract
AbstractThe corrosion behavior of 6082 aluminum alloy in deicing salt was investigated by electrochemical impedance spectra combined with an X‐ray diffractometer, scanning electron microscopy, electron backscatter diffraction, and transmission electron microscope. The experiment results showed that the corrosion tendency of 6082 aluminum alloy in deicing salt strongly depends on its different matrix and grain boundary precipitates, which also show the characteristics of transformation during the corrosion process. The Nyquist plot exhibits the characteristics of double capacitive resistance arcs, and the capacitive resistance arcs were affected by corrosion characteristics and corrosion products on aluminum alloy surface. The nucleation and development of pitting and the formation of a passive film were closely related to the Si phase in the 6082 aluminum alloy.
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