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Research Article

A super-hydrophilic surface enhanced by the hierarchical reticular porous structure on a low-modulus Ti–24Nb–4Zr–8Sn alloy

, , , &
Pages 1290-1300 | Received 08 Oct 2020, Accepted 10 Feb 2021, Published online: 28 Feb 2021
 

ABSTRACT

In this study, we fabricated a super-hydrophilic (θ < 5°) hierarchical reticular porous structure on the surface of Ti–24Nb–4Zr–8Sn (Ti2448) by combining sandblasting, dual acid-etching, and alkali thermal treatment. The super-hydrophilic hierarchical structure on the surface contained fine well-distributed nanopores with random microscale structures, leading to extremely high surface hydrophilicity. The sand blasting and dual acid-etching processes (SLA) and alkaline treatment (AT) resulted in the formation of microscale structures and nanopores, respectively. The formation mechanism of the hierarchical reticular porous structures was also examined. The average size of the nanopores on the surface of the SLA + AT Ti2448 sample was 86.3 nm, and the hierarchical structure contained several biocompatible components, including TiO2, Ti2ZrO, ZrTiO4, Nb2O5, Ti2O3, and ZrO2. Because of their super-hydrophilic and chemically biocompatible characteristics, hierarchical Ti2448 structural candidates are expected to be more suitable as implants for successful osseointegration.

Acknowledgments

All authors were contributed to the manuscript. This work was co-supported by the [the National Natural Science Foundation of China #1] under Grant [number 51201100, 51821001, 8190030324]; and [the Cultivation (Transformation) of the Interdisciplinary Program of Shanghai Jiao Tong University, China #2] under Grant [number ZH2018QNA04].

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by National Natural Science Foundation of China: [grant number 51201100, 51821001, 8190030324]; Cultivation (Transformation) of the Interdisciplinary Program of Shanghai Jiao Tong University: [grant number ZH2018QNA04].

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