摘要
两种硫氧化细菌诱导钢铁腐蚀的电化学评估张英，戴明安，王秋（青岛海洋腐蚀研究所青岛２６６０７１）（青岛海洋大学青岛２６６００３）１前言各国学者对由生物的生命活动引起材料的腐蚀（ＭＩＣ）或降解（Ｂｉｏｄｅｔｅｒｉｏｒａｔｉｏｎ）进行了大量的研究，大多数文...
Electrochemical techniques along with scanning electron microscopy(SEM) andX-ray diffraction analysis(XRD) were employed for investigating the effect of Thiobacillus thioparus(T.P.) and Thiobacillus ferrooxidallces(T.f.) bacteria on the mechanism of Microbiologically Induced Corrosion of Cr-Ni-Mo-V steel and 316L SS. Experimental results showed that both bacteria could attach on the surface of these steels and induce localized changes of the costituents, pH and oxygen levels of the electrolyte. These changes can lead to variations in the types and rates of electrochemical reactions of the steels. T.P. could excrete sulfuric acid and form a slime layer. T.f. could oriize Fe2+ into Fe3+ and form tubercles. In the cultiVation of T.P., the pitting resistance of 316L SS was found to be lower, its mas. and Ecorr became hlgher, an active peak was observed and its Passive range was reduced. However, T.f. has no obvious effect on 316L SS.
出处
《中国腐蚀与防护学报》
CAS
CSCD
1994年第2期168-174,共7页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金
关键词
钢铁
硫氧化细菌
诱导腐蚀
电化学
Biodeterioration, corrosion, microfouling, thiobacillus.
