微弧氧化法制备不同浓度含锌涂层表面特征及抗菌性能的研究

Abstract

Abstract: PURPOSE：Prepare zinc-containing coatings with different concentrations on pure titanium by micro-arc oxidation, and compare the surface morphology, element distribution and antibacterial properties. METHODS: The experiment was divided into 5 groups. Pure titanium after polishing was used as the control group (group A), Without added zinc was used as zinc-free group(group B), according to the introduction of different concentrations of zinc was divided into low-zinc group (group C)、medium-zinc group(Group D) and high-zinc group (Group E); SEM and EDS were used to observe the surface morphologyand element distribution of each group; Film coating method was used to test the inhibitory effect of Escherichia coli and Staphylococcus aureus.RESULTS: ①SEM observation: There was no pore structure on the surface of Group A, and troughs were formed. The voids on the surface of the four experimental groups showed a crater-like structure. The diameter of the nanopore on the surface of group B and C is 200-300nm, the diameter of the nanopore on the surface of group D is 100-200nm, and the diameter of nanopore on the surface of group E is 50-100nm. ② EDS showed that compared with group A and group B, zinc was successfully introduced on the surface of the coating in groups C, D, and E, and the atomic ratio increased in turn, there was a significant statistical difference(P<0.01)；③Film coating test results: There was a statistically significant difference in the number of colonies between the groups (P<0.01).Conclusion: The zinc-containing coating prepared by micro-arc oxidation has antibacterial properties, and the antibacterial property increases with the increase of zinc ion concentration.

Key words: micro-arc oxidation, zinc, antibacterial

CLC Number:

R783.1

References 18

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Study on Surface Characteristics and Antibacterial Properties of Different Concentration Zinc Coatings Prepared by Microarc Oxidation

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