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.

摘要

在这项研究中，我们通过结合喷砂、双酸蚀刻和碱热处理在 Ti-24Nb-4Zr-8Sn（Ti2448）表面制备了超亲水（θ < 5°）分级网状多孔结构。表面的超亲水分层结构包含具有随机微尺度结构的精细分布的纳米孔，导致极高的表面亲水性。喷砂和双酸蚀刻工艺 (SLA) 和碱处理 (AT) 分别导致形成微米级结构和纳米孔。还研究了分级网状多孔结构的形成机制。SLA + AT Ti2448 样品表面纳米孔的平均尺寸为 86.3 nm，层次结构包含多种生物相容性成分，包括 TiO₂、Ti ₂ ZrO、ZrTiO ₄、Nb ₂ O ₅、Ti ₂ O ₃和ZrO ₂。由于其超亲水性和化学生物相容性特性，分层 Ti2448 结构候选物有望更适合作为成功骨整合的植入物。