用交流阻抗法研究铌钢在海水中的腐蚀行为  

INVESTIGATION ON CORRSION BEHAVIOR OF NIOBIUM CONTAINING STEEL IN SEAWATER BY AC IMPEDANCE TECHNIQUE

作　　者：王杨[1] 杨慧[1] 

机构地区：[1]健雄职业技术学院化学工程系,太仓215411

出　　处：《腐蚀科学与防护技术》2009年第1期69-71,共3页Corrosion Science and Protection Technology

摘　　要：用交流阻抗谱方法研究了开路电位条件下铌钢和普通碳钢在天然海水及室温时腐蚀电位随时间的变化规律,结果表明:铌钢腐蚀产物比普通碳钢腐蚀产物致密;铌钢的耐腐蚀性能优于普通碳钢.In present work, variation of open circuit potential of niobium steel and carbon steel in seawater at ambient temperature with time was studied. The AC impedance spectra of the interface between steels and the seawater by different time were measured. The results show that ： （ 1 ） The charge transfer resist- ances of niobium steels in sea water exhibited a tendency to become higher and higher with time, which implied that corrosion products of niobium steel were much compact than those of carbon steel ; （2） The corrosion potential of niobium steel increased gradually with increasing corrosion period, while carbon steel remained constant. Therefore the corrosion resistance of the niobium micro-alloyed steel is better than that of the carbon steel.

关 键 词：铌钢 海水腐蚀 交流阻抗谱 

分 类 号：TG172.5[金属学及工艺—金属表面处理]