期刊文献+

硫酸盐还原菌对热镀锌钢材氢渗透行为的影响

Effect of SRB on hydrogen permeation of hot-dip galvanized steel
下载PDF
导出
摘要 采用Devanathan-Stachurski双面电解池检测氢渗透电流技术和扫描电镜分析,研究了热镀锌钢材在灭菌海水、灭菌培养基和接种了硫酸盐还原菌(SRB)的培养基等3种介质中的氢渗透行为。氢渗透电流检测结果表明,培养基的部分组分对热镀锌钢材的氢渗透行为有促进作用,试样在灭菌培养基中的氢渗透电流密度的平均值比在灭菌海水中提高了约6倍。尽管活性SRB代谢产生的S2?和HS?能够促进热镀锌钢材的氢渗透行为,但是,由SRB及其代谢产物和它们所黏附的腐蚀产物所形成的致密微生物膜减少了氢的析出和试样对氢的吸收量,导致热镀锌钢材氢渗透行为最终被抑制,因此,试样在接菌培养基中的氢渗透电流密度的平均值比其在灭菌培养基中降低77%。扫描电镜分析表明,热镀锌钢材在灭菌海水中能够形成腐蚀产物膜,而暴露于灭菌培养基中的试样表面未形成明显的腐蚀产物膜,但在接菌培养基中试样表面能形成黏附了腐蚀产物的致密微生物膜的附着,表明热镀锌钢材表面的微生物膜与其氢渗透行为之间存在明显的相关性。 Hydrogen permeation testing with Devanathan-Stachurski cell and SEM analytical method were used to study the hydrogen permeation behavior of hot-dip galvanized steel in sterilized seawater,sterilized medium and medium inoculated with SRB.The results showed hydrogen permeation behavior of galvanized steel was promoted by some components of the medium.The average hydrogen permeation current density of the sample in sterilized medium was 6 times higher than which in sterilized seawater.The compact film formed by SRB,metabolites of SRB and corrosion products decreased the hydrogen adsorption of the sample although S2-and HS-produced by active SRB could promote the hydrogen peameation behavior,which resulted in the average hydrogen permeation current density of galvanized steel in medium inoculated with SRB 77% lower than which in sterilized medium.SEM results showed few products adhered on the sample immersed in sterilized medium,but a film of corrosion products was formed on the sample immersed in sterilized seawater,and a biofilm of SRB and its metabolites to-gether with the film of corrosion products was formed on the the sample immersed in medium inoculated with SRB,indicating a obvious relation between the biofilm and hydrogen permeation of galvanized steel.
出处 《海洋科学》 CAS CSCD 北大核心 2011年第1期48-53,共6页 Marine Sciences
基金 国家自然科学基金项目(40576038) 山东省自然科学基金项目(Y2008E09)
关键词 硫酸盐还原菌 氢渗透 镀锌层 阴极保护 sulphate reducing bacteria hydrogen permeation zinc coating cathodic protection
  • 相关文献

参考文献8

二级参考文献64

  • 1王佳,曹楚南,林海潮.孔蚀发展期的电极阻抗频谱特征[J].中国腐蚀与防护学报,1989,9(4):271-279. 被引量:60
  • 2杨洲,霍春勇,朱永艳,刘增文,黄彦良.硫化氢对管线钢在氯化钠溶液中应力腐蚀开裂的影响[J].海洋科学,2005,29(10):23-26. 被引量:4
  • 3李鑫,杜鸿雁,魏绪钧,李焰.热海水中热浸镀用锌及锌铝合金的电化学性能[J].东北大学学报(自然科学版),2005,26(11):1099-1102. 被引量:1
  • 4朱永艳,郑传波,李言涛,黄彦良.海泥中硫酸盐还原菌数量变化对主要腐蚀环境因子的影响[J].海洋科学,2006,30(11):37-40. 被引量:11
  • 5Mcneil M B, Little B J. Mackinawite formation during mi- crobial corrosion [J]. Corrosion, 1990,46(7): 599.
  • 6Lee W, Characklis W G. Corrosion of mild steel under anaerobic biofilm[J]. Corrosion, 1993,49(3):186- 199.
  • 7Mansfeld F. Evaluation of MIC and its Inhibition with Electrochemical Impedance Spectroscopy and Electroche- mical Noise Analysis. The 2nd international proceeding in ocean corrosion[C]. Ocean Press: Beijing, 2000.6- 34.
  • 8Franklin M J, White D C, Isaacs H S. Pitting corrosion by bacteria on carbon steel, determined by the scanning vibrating electrode technique[J]. Corrosion Science, 1991,32(9):945- 952.
  • 9Kuehr V W, Vlugt V. The graphitication of cast iron as an electrochemical process in the anaerobic soils[J]. Water, 1934, 18: 147- 165.
  • 10King R A, Miller J D, Wakerley D S. Corrosion of mild steel in cultures of sulfate- reducing bacteria: effect of changing the soluble iron concentration during growth[J]. Br corros, 1973, 8:89- 93.

共引文献50

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部