The corrosion behavior of Zn-Al-Mg-RE sealed and unsealed coatings fabricated by high-velocity arc spraying on Q235 steel was studied in seawater with sulfate-reducing bacteria(SRB)using electrochemical impedance spectroscopy(EIS),polarization curve(PC),scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS).The results show that the corrosion rate of unsealed and sealed Zn-Al-Mg-RE coatings first increases and then decreases;the corrosion resistance of Zn-Al-Mg-RE coating apparently improv...
LONG Wei-yang,WU Yu-ping,GAO Wen-wen,HONG Sheng(College of Mechanics and Materials,Hohai University,Nanjing 211100,China)海水含有氯离子和微生物,具有很强的腐蚀性。低碳钢和低碳合金钢构件在海洋环境中难免会遭受各种微生物的腐蚀与破坏,造成巨大的经济损失和安全隐