Abstract: Plated coatings with antibacterial activity can be expected to prevent contamination of bacteria in medical apparatus and instruments, food containers, metal equipment used in processing, transporting and storing of food, public facilities made of metal,and kitchen wares. Therefore this kind of deposit has important significance to diminish human diseases induced by pathogenic bacteria. However, studies on deposits with antibacterial activity have not been reported in literature. In this paper, nanocomposite Ni-P based deposit with antibacterial activity is prepared, by adding antibacterial agent containing nickel ions to electrolysis plating Ni-P bath.The antibacterial agent is prepared by adsorbing nickel ions onto porous hydrated silica (diameter:～200 nm).The antibacterial performance of deposit was tested, and the result showed that this kind of deposit has 100% bactericidal action on pseudomonas aeruginosa and also has 90% antibacterial performance on Escherichia coli.Finally,the antibacterial mechanism of deposit is discussed.

摘要： 通过将载镍型抗菌剂复合到Ni-P镀层的方法获得了纳米抗菌复合镀层 .抗菌检验实验表明 ,该镀层对绿脓杆菌有 10 0 %的杀菌性能 ,对大肠杆菌的杀菌率约为 90 %.最后初步探讨了镀层的抗菌机理 .