温度对Q235钢在碱性土壤中腐蚀行为的影响  

Effects of Temperatures on Corrosion Behavior of Q235 Steel in Alkaline Soil

作　　者：余建飞[1] 陈心河[1] 詹约章[1] 张明[1] 

机构地区：[1]湖北省电力试验研究院,湖北武汉430077

出　　处：《全面腐蚀控制》2010年第11期41-44,共4页Total Corrosion Control

摘　　要：采用失重法、极化曲线和电化学阻抗谱研究了Q235钢在不同温度碱性土壤中的腐蚀行为。试验结果表明:Q235钢的极化电流密度随着温度的升高而增大,结合层电阻R_1和电荷转移电阻R_t逐渐减小,提出了该体系的等效电路图。The corrosion behavior of Q235 steel in alkaline soil with 25% moisture content at different temperatures was investigated by means of potentiodynamic polarization, electrochemical impedance spectroscopy （EIS） and weight-loss measurement. Results showed that the corrosion current density increased and the impedance of the system decreased obviously with increase of temperature. The corresponding equivalent circuits were proposed.

关 键 词：温度 Q235钢 土壤腐蚀 等效电路 

分 类 号：TG179[金属学及工艺—金属表面处理]