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HA/TiO/CNT 纳米复合材料的摩擦磨损性能评价。

Tribo-mechanical properties evaluation of HA/TiO/CNT nanocomposite.

机构信息

Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX, USA.

Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, 2713, Doha, Qatar.

出版信息

Sci Rep. 2021 Jan 21;11(1):1867. doi: 10.1038/s41598-021-81187-7.

DOI:10.1038/s41598-021-81187-7
PMID:33479329
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7820248/
Abstract

In this study, a combination of reverse microemulsion and hydrothermal techniques were used to synthesize HA. A hydrothermal method was used to synthesize HA/TiO/CNT nanocomposite powders. Cold and hot isostatic pressing techniques were used to fabricate tablet-shaped samples. To investigate the biocompatibility and tribo-mechanical properties of HA/TiO and HA/TiO/CNTs, four samples were prepared with different percentages of CNTs, namely, HA/TiO (S0), HA/TiO/CNT (S1.0), HA/TiO/CNT (S2.0), and HA/TiO/CNT (S3.0). The microstructure and morphology of the HA/TiO/CNTs were characterized by transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction. Hardness test results show that S3.0 displayed the highest surface hardness (285 HV) compared to other samples. The wear rate of HA/TiO/CNT with the highest CNT content showed a decrease compared with those of the other samples. The results from nanoindentation tests showed that Young's modulus of the S3.0 sample was 58.1% greater than that of the S0 sample. Furthermore, the human MDA-MB-231 cell line demonstrated good binding to the surface of the samples in the in-vitro biocompatibility evaluation of the HA/TiO/CNT composites.

摘要

在这项研究中，采用反胶束和水热技术的组合来合成 HA。采用水热法合成了 HA/TiO/CNT 纳米复合材料粉末。采用冷等静压和热等静压技术制备了平板状样品。为了研究 HA/TiO 和 HA/TiO/CNTs 的生物相容性和摩擦磨损性能，制备了四种不同 CNT 含量的样品，分别为 HA/TiO（S0）、HA/TiO/CNT（S1.0）、HA/TiO/CNT（S2.0）和 HA/TiO/CNT（S3.0）。通过透射电子显微镜、扫描电子显微镜、能谱分析和 X 射线衍射对 HA/TiO/CNTs 的微观结构和形貌进行了表征。硬度测试结果表明，与其他样品相比，S3.0 的表面硬度（285HV）最高。含有最高 CNT 含量的 HA/TiO/CNT 的磨损率与其他样品相比有所降低。纳米压痕测试结果表明，S3.0 样品的杨氏模量比 S0 样品高 58.1%。此外，在 HA/TiO/CNT 复合材料的体外生物相容性评估中，人 MDA-MB-231 细胞系在样品表面表现出良好的结合性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/a5eff5035e86/41598_2021_81187_Fig12_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/a5eff5035e86/41598_2021_81187_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/2d89d86aae60/41598_2021_81187_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/1660793c6562/41598_2021_81187_Fig2_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/d1bef7729027/41598_2021_81187_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/78902e014847/41598_2021_81187_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/198a3a49bfef/41598_2021_81187_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/a07d493fc502/41598_2021_81187_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/8a66f62d7306/41598_2021_81187_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/a893e35bfce0/41598_2021_81187_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/f32454ebff6e/41598_2021_81187_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a6e9/7820248/a5eff5035e86/41598_2021_81187_Fig12_HTML.jpg

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