A study of the antimicrobial and tribological properties of TiN/Ag nanocomposite coatings
A study of the antimicrobial and tribological properties of TiN/Ag nanocomposite coatings
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DOI：
10.1016/j.surfcoat.2009.05.012
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发表时间：
2009-12-25
影响因子：
5.4
通讯作者：
Lordanova, I.
中科院分区：
文献类型：
--
作者：
Kelly, P. J.;Li, H.;Lordanova, I.
采用脉冲磁控溅射方法制备了不同银含量的TiN/Ag涂层。用扫描电子显微镜(SEM)、能量色散X射线能谱(EDX)和X射线衍射仪(XRD)对薄膜的结构和成分进行了表征。通过推力垫圈磨损试验评价了涂层的摩擦学性能，结果表明，随着银含量的增加，涂层与钢对偶面的摩擦系数略有降低。用抑制区来确定银离子从纳米复合材料中释放的程度，并用NBT(硝基蓝四氮唑)氧化还原染料来测定孵育后表面的抗菌效果。检测微生物为铜绿假单胞菌和金黄色葡萄球菌。虽然在任何表面都没有观察到抑制区，但对于NBT分析，经过培养后，含银涂层显示，与“纯”锡表面相比，这两种微生物的活细胞数量都显著减少。(C)2009爱思唯尔B.V.保留所有权利。
TiN/Ag coatings with varying silver contents have been deposited by pulsed magnetron sputtering. The films were characterised in terms of structure and composition using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The tribological properties of the coatings were assessed by thrust washer wear testing, which showed a marginal reduction in friction coefficient with increasing silver content against a steel counterface. Zones of inhibition were used to determine the extent of silver ion release from the nanocomposite materials, and a NBT (nitro-blue tetrazolium) redox dye was used in an assay to determine the antimicrobial effectiveness of the surfaces following incubation. The microorganisms tested were Pseudomonas aeruginosa and Staphylococcus aureus. Whilst no zones of inhibition were observed on any of the surfaces, for the NBT assays, after incubation, the silver containing coatings revealed a significant reduction in the number of viable cells of both microorganisms, compared to a 'pure' TiN surface. (C) 2009 Elsevier B.V. All rights reserved.