Exceptional improvement in the wear resistance of biomedical β-type titanium alloy with the use of a biocompatible multilayer Si/DLC nanocomposite coating

Mehdi Kheradmandfard, Oleksiy V. Penkov, Seyed Farshid Kashani-Bozorg, Jung Seung Lee, Chang Lae Kim, Mahdi Khadem, Seung Woo Cho, Abbas Zarei Hanzaki, Dae Eun Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A silicon/diamond-like carbon (Si/DLC) multilayer nanocomposite coating (MNC) was applied to the Ti–29Nb–13Ta‒4.6Zr (TNTZ) alloy to improve its wear resistance and durability. The Si/DLC MNC on the TNTZ alloy demonstrated an extremely low wear rate of 6.2 × 10−10 mm3N−1mm−1. Moreover, the wear track depth after one million wear cycles was found to be only 220 nm, while the thickness of the entire coating was 370 nm. Furthermore, cell culture tests demonstrated that the Si/DLC MNC samples exhibited better biocompatibility than the TNTZ alloy samples. A quantitative comparison of the cell adhesion behavior of the TNTZ and Si/DLC MNC samples indicated that 60% of the surface of the Si/DLC MNC sample was covered with cells, which was approximately twice the surface of the TNTZ alloy sample covered with cells. In addition, no dead cells were observed on the Si/DLC MNC samples, indicating that the Si/DLC MNC samples exhibited no toxic effects against the MC3T3 cells. These results indicate that the Si/DLC MNC enhances the wear resistance of the TNTZ alloy and improves its biofunctionality, thus making it a potential candidate for use in long-term implant applications.

Original languageEnglish
Pages (from-to)17376-17384
Number of pages9
JournalCeramics International
Volume48
Issue number12
DOIs
Publication statusAccepted/In press - 2022

Bibliographical note

Funding Information:
This work was supported by the BK21 Plus project through the National Research Foundation (NRF) funded by the Ministry of Education of Korea . This work was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MSIT ) (No. 2020R1A2C2004714 ). The authors declare no conflict of interest.

Publisher Copyright:
© 2022 Elsevier Ltd and Techna Group S.r.l.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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