Corrosion Behavior in Soil of Xinjiang of Steels for Photovoltaic Pile Foundation
Three kinds of steel used for photovoltaic pile foundation were buried in a selected site in Xinjiang area for 30 d,whilst the accelerated soil acceleration test was carried out in the laboratory for comparison in terms of their corrosion behavior.Then their corrosion morphology and corrosion products were characterized by means of scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and X-ray diffraction(XRD),and the corrosion behavior of different photovoltaic pile steels in Xinji-ang soil environment were compared by electrochemical tests.The results show that compared with the other two corrosion-resistant steels,the Q355B carbon steel suffers from the most serious corrosion.The corrosion products are mainly iron compounds composed of α-FeOOH and γ-FeOOH.The three steels exhibit the same corrosion acceleration ratio in the accelerated corrosion tests with the same parameters,and their corrosion mechanism is basically the same as that of the real field corrosion test.
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