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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。
The corrosion behavior of X100 steel in the inoculating seawater solution at different magnetic field intensities was studied by AC impedance, potentiodynamic polarization and corrosion weight loss methods. The surface corrosion morphology under different magnetic field intensities was observed by optical microscope. The results show that the existence of magnetic field has a certain inhibition effect on the growth of SRB, and the greater the magnetic field strength, the more obvious the magnetic field inhibits the growth of SRB. The electrochemical test results show that compared with no magnetic field conditions, SRB The corrosion resistance of X100 steel was reduced. With the increase of magnetic field strength, the charge transfer resistance (Rct) increased, the corrosion current density decreased, and the corrosion rate decreased. The corrosion morphology showed that the surface of the matrix without magnetic field How much and deep corrosion pits, while the number of corrosion pits on the surface of the sample under applied magnetic field decreases, and the more the magnetic field strength, the smoother the surface of the sample.