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.