银纳米粒子对 Ti6Al4V 上电泳沉积羟基磷灰石薄膜的生物和腐蚀行为的影响

IF 4.2 3区 医学 Q2 ENGINEERING, BIOMEDICAL
Hassan Balaei, H. M. Ghasemi, Rouhollah Mehdinavaz Aghdam, B. Cheraghali, Mahmoud Heydarzadeh Sohi
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引用次数: 0

摘要

在过去的几十年里,研究人员一直在认真考虑对钛及其合金进行表面改性,以改善其生物特性。在本研究中,研究人员在阳极氧化和非阳极氧化的 Ti6Al4V 上采用电泳沉积(EPD)的方法,在室温下以 30 V 的直流电流在 10 分钟内沉积了不同浓度(0、2、4 和 6 wt%)的羟基磷灰石(HA)银(Ag)纳米粒子。然后通过 X 射线衍射(XRD)分析、傅立叶变换红外光谱(FT-IR)、配备能量色散光谱(EDS)的扫描电子显微镜(SEM)对试样进行表征。细胞粘附图像和细胞存活率结果表明,与未阳极氧化和阳极氧化的 Ti6Al4V 相比,HA-Ag 复合涂层显著提高了样品的生物相容性。Mg-63细胞在HA-4%Ag涂层和双层涂层(阳极氧化试样上的HA-4%Ag)上的存活率约为91%,被认为是生物相容性最好的涂层。另一方面,抗菌评估表明,与其他样品相比,HA-6%Ag 涂层的抗菌性能最好。此外,塔菲尔极化曲线表明,双层涂层的耐腐蚀性高于其他试样。该涂层的抗极化能力约为 Ti6Al4V 合金的 7 倍。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The effect of silver nanoparticles on biological and corrosion behavior of electrophoretically deposited hydroxyapatite film on Ti6Al4V

Surface modification of titanium and its alloys has been seriously considered by researchers to improve their biological behaviors, in the past few decades. In present research, hydroxyapatite (HA) based composite coatings with different concentrations of 0, 2, 4, and 6 wt% of silver (Ag) nanoparticles were electrophoretically deposited (EPD) on anodized and non-anodized Ti6Al4V, using a direct current at a voltage of 30 V for 10 min at room temperature. The specimens were then characterized by means of X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). The cell adhesion images and cell viability results showed that HA-Ag composite coatings significantly promoted the biocompatibility of samples compared with the non-anodized and anodized Ti6Al4V. The viabilities of Mg-63 cells on HA-4%Ag coating and bi-layer coating (HA-4%Ag on anodized specimen) were approximately 91% and they were considered as the best coatings in term of biocompatibility. On the other hand, the antibacterial assessments demonstrated that HA-6%Ag coating had the best antibacterial performance compared with other samples. Furthermore, Tafel polarization curves indicated that corrosion resistance of the bi-layer coating was higher than those of the other specimens. The polarization resistance of this coating was about 7 times more than that of theTi6Al4V alloy.

Graphical Abstract

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来源期刊
Journal of Materials Science: Materials in Medicine
Journal of Materials Science: Materials in Medicine 工程技术-材料科学:生物材料
CiteScore
8.00
自引率
0.00%
发文量
73
审稿时长
3.5 months
期刊介绍: The Journal of Materials Science: Materials in Medicine publishes refereed papers providing significant progress in the application of biomaterials and tissue engineering constructs as medical or dental implants, prostheses and devices. Coverage spans a wide range of topics from basic science to clinical applications, around the theme of materials in medicine and dentistry. The central element is the development of synthetic and natural materials used in orthopaedic, maxillofacial, cardiovascular, neurological, ophthalmic and dental applications. Special biomedical topics include biomaterial synthesis and characterisation, biocompatibility studies, nanomedicine, tissue engineering constructs and cell substrates, regenerative medicine, computer modelling and other advanced experimental methodologies.
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