Tribo-mechanical properties evaluation of HA/TiO2/CNT nanocomposite

Erfan Zalnezhad; F Musharavati; Tianyi Chen; Fadi Jaber; Kaan Uzun; Muhammad E H Chowdhury; Amith Khandakar; Junxing Liu; S Bae

doi:10.1038/s41598-021-81187-7

Tribo-mechanical properties evaluation of HA/TiO₂/CNT nanocomposite

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

Authors

Erfan Zalnezhad¹, F Musharavati², Tianyi Chen³, Fadi Jaber⁴, Kaan Uzun⁵, Muhammad E H Chowdhury⁶, Amith Khandakar⁶, Junxing Liu⁷, S Bae⁸

Affiliations

¹ Department of Biomedical Engineering and Chemical Engineering, University of Texas at San Antonio, San Antonio, TX, USA. e.zalnezhad@gmail.com.
² Mechanical and Industrial Engineering Department, College of Engineering, Qatar University, 2713, Doha, Qatar.
³ Department of Mechanical Convergence Engineering, Hanyang University, Seoul, South Korea.
⁴ Department of Biomedical Engineering, Ajman University, Ajman, United Arab Emirates.
⁵ Mechatronics R&D Center, Samsung Electronics Co., Ltd., Hwaseong, South Korea.
⁶ Department of Electrical Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar.
⁷ Department of Architectural Engineering, Hanyang University, Seoul, 04763, South Korea.
⁸ Department of Architectural Engineering, Hanyang University, Seoul, 04763, South Korea. sbae@hanyang.ac.kr.

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/TiO₂/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/TiO₂ and HA/TiO₂/CNTs, four samples were prepared with different percentages of CNTs, namely, HA/TiO₂ (S0), HA/TiO₂/CNT (S1.0), HA/TiO₂/CNT (S2.0), and HA/TiO₂/CNT (S3.0). The microstructure and morphology of the HA/TiO₂/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/TiO₂/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/TiO₂/CNT composites.

Publication types

Research Support, Non-U.S. Gov't