中文摘要：

采用交流阻抗、动电位极化技术和腐蚀失重法研究了不同磁场强度下X100钢在接菌海水溶液中的腐蚀行为,并利用金相显微镜观察不同磁场强度下的表面腐蚀形貌。结果表明：磁场的存在对SRB的生长具有一定的抑制作用,且磁场强度越大,磁场对SRB生长的抑制作用越明显;电化学测试结果表明,与无磁场条件相比,外加磁场条件下SRB对X100钢的腐蚀作用减轻,且随着磁场强度的增加,电荷转移电阻（Rct）增大,腐蚀电流密度减小,腐蚀速率下降;腐蚀形貌结果表明,无磁场条件下的基体表面呈现较多大且深的腐蚀坑,而外加磁场条件下的试样表面腐蚀坑数目减少,且随着磁场强度越大,试样表面越平整。

英文摘要：

Corrosion resistance of X100 stee1 in a sulfate-reducing bacteria（ SRB） seawater under different magnetic field（ MF） intensities was investigated by using electrochemical impedance spectroscopy（ EIS）,potentiodynamic polarization and mass loss method,and corrosion morphologies were observed by means of using metalloscope with different magnetic field intensities. The results show that action of SRB growth is inhibited by magnetic field,and the number of SRB decreases with the increase of magnetic field intensities. The EIS results show that MF can inhibit the corrosion of X100 steel to certain extent. The Rctvalue increases,the corrosion current density decreases and the corrosion rate decreases with the increase of magnetic field intensities. The corrosion morphology observation results show that the surface of X100 steel without MF occurs many big corrosion pits,while corrosion pit with MF is less,and the surface of X100 steel is much more uniform with the increase of the magnetic field intensities.