摘要
研究了16MnR低合金钢在不同浓度KOH溶液中的腐蚀行为和腐蚀速率,并利用电化学测试对16MnR钢腐蚀过程中的电化学行为特征进行了研究。结果表明:随着KOH浓度的增大,16MnR钢的自腐蚀电位和极化电阻变低,自腐蚀电流密度变大,维钝电流密度也有所增加,腐蚀速率变大;电化学阻抗谱分析所得结论与线性极化和动电位极化的结果相一致。扫描电镜观察表明:在浸泡腐蚀实验中,16MnR钢表面的腐蚀程度随KOH浓度的增大而越来越严重,能谱分析表明该腐蚀产物主要为Fe2O3。
Corrosion behavior of 16 MnR low alloy steel in KOH solutions was studied by means of electrochemical measurement. Results show that with the increase of KOH concentration, the corrosion potential and polarization resistance（Rp） decreased, while the corrosion current density and the passivation current density increased, thus the corrosion rate of 16 MnR increased correspondingly. After immersion test the steel exhibited surface morphology with severe corrosion characters and its main corrosion product was Fe2O3.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2015年第4期327-332,共6页
Corrosion Science and Protection Technology
