Advanced Functional Surface & Biomaterials Research Lab, Department of Dental Materials & Research Center of Nano-Interface Activation for Biomaterials, College of Dentistry, Chosun University, Gwangju, 61452, Republic of Korea.
J Nanosci Nanotechnol. 2020 Sep 1;20(9):5751-5754. doi: 10.1166/jnn.2020.17663.
The purpose of this study was to investigate the nanotube morphology changes of Ti-Nb-Ag-Pt alloys with Nb content. Ti-Nb-Ag-Pt was fabricated using arc melting vacuum furnace. The Ti- Nb-Ag-Pt ingot was further homogenized in an Ar atmosphere at 1100 °C for 1 h in a vacuum and then quenched at 0 °C. Nanotube formation on the samples was performed using anodization method with a DC power supply at 30 V for 2 h in 1 M H₃PO₄ +0.8 wt.% NaF at 25 °C. The surface morphology was observed using OM, FE-SEM, EDS, and XRD. In the microstructure of Ti-Nb-Ag-Pt alloy, needle-like structures on and ″ gradually disappeared with increasing Nb, -phase equilibrium structure appeared, and particle size decreased. The nanotube morphology of the Ti-Nb-Ag-Pt alloy changed according to the content of Nb. As the Nb content increases, the highly ordered nanotubes have changed to irregular nanotubes. The difference in dissolution area at the bottom of the nanotube was depending on the Nb content.
本研究旨在研究 Ti-Nb-Ag-Pt 合金中 Nb 含量对纳米管形态变化的影响。采用电弧熔炼真空炉制备 Ti-Nb-Ag-Pt。Ti-Nb-Ag-Pt 锭在 1100°C 的 Ar 气氛中进一步均匀化 1 小时，然后在 0°C 下淬火。使用直流电源在 25°C 的 1M H₃PO₄+0.8wt.% NaF 中以 30V 进行 2 小时的阳极氧化法在样品上形成纳米管。使用 OM、FE-SEM、EDS 和 XRD 观察表面形貌。在 Ti-Nb-Ag-Pt 合金的微观结构中，随着 Nb 的增加，和″上的针状结构逐渐消失，出现了 - 相平衡结构，颗粒尺寸减小。Ti-Nb-Ag-Pt 合金的纳米管形态根据 Nb 的含量而变化。随着 Nb 含量的增加，高度有序的纳米管已变为不规则纳米管。纳米管底部的溶解区域的差异取决于 Nb 的含量。
