抗菌处理含铜铁素体不锈钢的耐微生物腐蚀性能  

Microbial-Corrosion Resistance of the Cu-Containing Ferrite Stainless Steels after Antibacterial Treatment

作　　者：秦丽雁[1] 宋诗哲[1,2] 李亚红[3] 武杰[3] 

机构地区：[1]天津大学材料科学工程学院 [2]金属腐蚀与防护国家重点实验室,沈阳110016 [3]国家海洋局天津海水淡化研究所

出　　处：《物理化学学报》2008年第5期895-900,共6页Acta Physico-Chimica Sinica

摘　　要：采用电化学测试技术及微生物学方法,研究了抗菌处理含铜铁素体不锈钢在含有培养基的异养菌溶液中的耐蚀性能.结果表明,不锈钢的腐蚀电位随异养菌的新陈代谢呈现规律性变化,抗菌处理使不锈钢在菌液中钝化膜的稳定性得到改善,点蚀敏感性降低;抗菌不锈钢表面弥散分布的ε-Cu析出相的杀菌作用,降低了异养菌的活性,减缓了异养菌对抗菌不锈钢的腐蚀,提高了抗菌不锈钢耐微生物腐蚀性能.Microbial-corrosion resistance of Cu-containing ferrite stainless steels after antibacterial treatment in heterotrophic bacteria culture medium was investigated by means of various electrochemical techniques and microbial methods. The results showed that corrosion potential changed orderly along with metabolism of heterotrophic bacteria. Antibacterial treatment helped to enhance the stability of passive film and reduce the pitting sensibility when stainless steel was immersed in culture medium. Dispersion distributed ε-Cu phase on the surface of antibacterial stainless steel depressed activity of heterotrophic bacteria, thereafter alleviated the heterotrophic bacteria corrosion and improved the microbiological corrosion resistance of antibacterial stainless steel.

关 键 词：微生物腐蚀 异养菌 嗜氧菌 不锈钢 

分 类 号：TG174[金属学及工艺—金属表面处理]