Cu离子注入A304不锈钢抗菌机理研究
Research on Antibacterial Mechanism for Ion Implantation of Cu to A304 Stainless Steel
于 杰1, 高晓晋2, 陈敬超3, 唐雪莲1
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作者单位：1. 昆明理工大学 材料与冶金工程学院, 云南 昆明 650093; 2. 昆明冶金高等专科学校, 云南 昆明 650033; 3.云南省新材料制备与加工重点实验室, 云南 昆明 650093
中文关键字：离子注入； 抗菌； 不锈钢； 分子动力学
英文关键字：ion implantation; antibacterial; stainless steel; molecular dynamic
中文摘要：采用MEVVA源离子注入机对A304不锈钢进行饱和剂量的Cu离子注入，通过后期的热处理，所得样品对大肠杆菌、金霉球菌的抗菌效果达到97.6%和99.1%。Cu、O离子的价态在热处理前后发生明显改变，注入的Cu以某种弥散析出相存在，对吸附细菌中的氧起到抗菌效果。
英文摘要：Cu ions were implanted to A304 stainless steel by MEVVA ion source. Through heat treatment, the sample were detected by XPS and antibacterial test. The experimental results show that the sample has a high antibacterial rate: 97.6% for escherichia coli and 99.1% for staphylococcus aureu. The value state of Cu and O ion changes through heat treatment. The antibacterial mechanism is that Cu dispersed in precipitation phases absorb oxygen in bacterial.