摘要
采用动电位极化曲线、电化学阻抗谱、扫描电镜和能谱分析方法研究了304L不锈钢在硼酸水溶液中的腐蚀行为。结果表明,304L不锈钢的自腐蚀电位和腐蚀电流密度随着硼酸水溶液温度的升高而增大;不同温度下的电化学阻抗谱呈单容抗弧,表现为一个时间常数,80℃硼酸水溶液中的阻抗模值较小;随时间的延长,304L不锈钢的均匀腐蚀速率逐渐降低,并且维持在较低的腐蚀速率。
The corrosion behavior of 304 L stainless steel in boric acid aqueous solution was studied by potentiodynamic polarization curves,electrochemical impedance spectroscopy（EIS）,scanning electron microscopy and energy dispersive spectra.The results showed that the free corrosion potential and corrosion current density of304 Lstainless steel increased with the increase of solution temperature.Electrochemical impedance spectroscopy results indicated that EIS had a single capacitve loop and the impedance value of the passive film decreased with the increase of solution temperature.With the exposure time prolonging,the corrosion rate decreased and then maintained a lower value.
出处
《腐蚀与防护》
CAS
北大核心
2015年第1期68-71,共4页
Corrosion & Protection
