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抗菌性能的发挥取决与材料表面抗菌相的分布,采用MEVVA源高能离子注入机对A304不锈钢进行不同剂量Ag的注入,利用SEM、EDX对材料表面形貌和成分进行分析和通过后期的热处理和抗菌实验发现:样品对大肠杆菌、金霉球菌的抗菌效果达到96.6%和97.1%;过饱和注入的Ag出现Ag的团聚现象,不利于抗菌效果的发挥;非饱和往复注入通过热处理后出现含Ag弥散相。Ag的充分析出是材料发挥抗菌性能的所在,而饱和注入的不锈钢则出现大量银的团聚现象。
The antibacterial performance depends on the distribution of the antibacterial phase on the surface of the material. The MEVVA source high-energy ion implanter was used to implant A304 stainless steel with different doses of Ag. SEM and EDX were used to analyze the surface morphology and composition of the material and the later heat treatment and antibacterial The results showed that the antibacterial effect of the sample on Escherichia coli and Chrysosporium was 96.6% and 97.1%, respectively. The agglomeration of Ag was observed in the supersaturated Ag solution, which was unfavorable to the antibacterial effect. phase. The full precipitation of Ag is where the material exerts its antibacterial properties, whereas the saturated stainless steel has a large amount of silver agglomeration.