材料工程Issue(9)：56-61,67,7.
SRB对AZgl镁合金在两种培养基中腐蚀行为的影响
Influence of SRB on Corrosion Behaviour of AZ91 Magnesium Alloy in Two Kinds of Culture Media
摘要
Abstract
Soaking method, SEM and EDS analyses were applied to evaluate the influence and mechanism of sulfate-reducing bacteria (SRB) for the corrosion of AZ91 magnesium alloy in two kinds of culture media. The results show that, SRB can adhere and grow on the surface of AZ91, and then form a biofilm. The biofilm inhibits the corrosion of AZ91 at (30±1)℃. The biofilm formed in the culture medium with (NH4)2Fe(SO4) · 6H2O and C6H8O6 is loose, and plays a weak protective role for the matrix. Furthermore, Fe2+ ions in (NH4)2Fe(SO4) · 6H2O improve the metabolism of SRB significantly, however, they can form the deposition of FeS, which accelerates the corrosion of AZ91.关键词
AZ91镁合金/硫酸盐还原菌/生物膜/腐蚀/培养基Key words
AZ91 magnesium alloy/ SRB/ biofilm/ corrosion/ culture medium分类
通用工业技术引用本文复制引用
方世杰,刘耀辉,乔健,张伟..SRB对AZgl镁合金在两种培养基中腐蚀行为的影响[J].材料工程,2011,(9):56-61,67,7.基金项目
吉林省科技发展重点项目(20040315) （20040315）
河南省教育厅自然科学研究计划项目(2010B430019) （2010B430019）
