Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第23卷    第z1期    总第1期    2013年12月

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文章编号:1004-0609(2013)S1-0639-06
Ti3Zr2Sn3Mo25Nb医用钛合金表面载银复合抗菌涂层的制备及其抗菌性能
余 森,于振涛,韩建业,张 强,牛金龙,刘春潮

(西北有色金属研究院, 西安710016)

摘 要: 采用阳极氧化在医用β钛合金Ti3Zr2Sn3Mo25Nb表面制备TiO2纳米管预涂层,然后通过AgNO3溶液浸泡和紫外光照射处理实现银颗粒在预涂层上的固定,再在含银电解液中经过微弧氧化处理制备出载银多孔涂层。利用SEM、EDS对涂层表面形貌、元素构成和载银量进行表征,并通过金黄葡萄球菌评价涂层的抗菌性能。结果表明:通过阳极氧化和微弧氧化两步电化学处理可以在Ti3Zr2Sn3Mo25Nb合金表面制备出含银量较高的多孔涂层,且银多为小于100nm的熔融状颗粒。当载银涂层与金黄葡萄球菌接触1 d后,平均杀菌率达到96.94%,7 d后抑菌率仍可达71.27%。

 

关键词: Ti3Zr2Sn3Mo25Nb合金;载银抗菌涂层;阳极氧化;微弧氧化

Preparation and antibacterial properties of Ag-loaded antimicrobial coatings on Ti3Zr2Sn3Mo25Nb alloy
YU Sen, YU Zhen-tao, HAN Jian-ye, ZHANG Qiang, NIU Jin-long, LIU Chun-chao

Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China

Abstract:The pre-coatings were prepared on Ti3Zr2Sn3Mo25Nb alloy by anodic oxidation, and then soaked in the AgNO3 solution followed by UV irradiation treatment, after micro-arc oxidation treatment the Ag-loaded composite coatings were prepared finally. The surface topography of the Ag-loaded coatings, the element characteristics and the amount of Ag loading in the coatings were characterized by SEM and EDS. And the Staphylococcus aureus was used to evaluate the antibacterial activity of the coatings. The results show that the coatings prepared by two- step electrochemical method contain a high amount of silver, and most of silver is present as molten particles with the size less than 100 nm. In vitro antibacterial activity tests indicate that the composite coating incorporated with silver has efficient antibiotic ability. 96.94% of the Saphylococcus aureus are killed in the first day and the antibacterial ratio is as high as 71.27% after 7 d-incubation.

 

Key words: Ti3Zr2Sn3Mo25Nb alloy; silver-loaded antimicrobial coatings; anodization; micro-arc oxidation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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