热喷涂铝涂层在3.5 NaCl溶液中阻抗谱随温度变化规律的研究

摘要

利用浸泡法以及电化学阻抗谱研究了铝涂层在3.5% NaCl溶液中不同温度下涂层电阻的变化.实验结果表明:铝涂层氧化膜对腐蚀介质的隔离能力随溶液温度升高而减弱，涂层电阻随着溶液温度的升高而降低.%The changes of aluminum coating resistance under different temperature in 3.5％ NaC1 solution was studied by the method of immersion and electrochemical impedance spectroscopy(ElS) . The results show that: with temperature increasing the aluminum oxide film coating of ability to corrosion medium isolation is weaken, with medium temperature increasing coating resistance is decreased.