Łosiewicz Bożena, Skwarek Sandra, Stróż Agnieszka, Osak Patrycja, Dudek Karolina, Kubisztal Julian, Maszybrocka Joanna
Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
Refractory Materials Division, Institute of Ceramics and Building Materials, Łukasiewicz Research Network, Toszecka 99, 44-100 Gliwice, Poland.
Materials (Basel). 2022 Mar 21;15(6):2321. doi: 10.3390/ma15062321.
In the group of vanadium-free titanium alloys used for applications for long-term implants, the Ti-13Zr-13Nb alloy has recently been proposed. The production of a porous layer of oxide nanotubes (ONTs) with a wide range of geometries and lengths on the Ti-13Zr-13Nb alloy surface can increase its osteoinductive properties and enable intelligent drug delivery. This work concerns developing a method of electrochemical modification of the Ti-13Zr-13Nb alloy surface to obtain third-generation ONTs. The effect of the anodizing voltage on the microstructure and thickness of the obtained oxide layers was conducted in 1 M CHO + 4 wt% NHF electrolyte in the voltage range 5-35 V for 120 min at room temperature. The obtained third-generation ONTs were characterized using SEM, EDS, SKP, and 2D roughness profiles methods. The preliminary assessment of corrosion resistance carried out in accelerated corrosion tests in the artificial atmosphere showed the high quality of the newly developed ONTs and the slight influence of neutral salt spray on their micromechanical properties.
在用于长期植入物应用的无钒钛合金组中，最近有人提出了Ti-13Zr-13Nb合金。在Ti-13Zr-13Nb合金表面制备具有各种几何形状和长度的多孔氧化纳米管（ONTs）层，可以提高其骨诱导性能并实现智能药物递送。这项工作涉及开发一种对Ti-13Zr-13Nb合金表面进行电化学改性以获得第三代ONTs的方法。在室温下，于1 M CHO + 4 wt% NHF电解液中，在5-35 V的电压范围内进行120分钟阳极氧化，研究了阳极氧化电压对所得氧化层微观结构和厚度的影响。使用扫描电子显微镜（SEM）、能谱仪（EDS）、扫描 Kelvin 探针（SKP）和二维粗糙度轮廓法对所得第三代ONTs进行了表征。在人工大气加速腐蚀试验中进行的耐腐蚀性初步评估表明，新开发的ONTs质量很高，中性盐雾对其微观力学性能的影响很小。
