Department of Energy and Mechanical Engineering and Institute of Marine Industry, Gyeongsang National University, 38, Cheondaegukchi-gil, Tongyeong, Gyeongnam, 53064, Republic of Korea.
Department of Materials Engineering and Convergence Technology and Research Institute for Green Energy Convergence Technology, Gyeongsang National University, 501, Jinju-daero, Jinju, Gyeongnam 52828, Republic of Korea.
J Nanosci Nanotechnol. 2019 Jun 1;19(6):3627-3630. doi: 10.1166/jnn.2019.16134.
Shape memory alloys (SMAs) are commonly used for various applications, e.g., in the aerospace and automotive industries, robotics, and biomedical sciences. Although Ti-Ni SMAs are commercially available, the low biocompatibility of Ni has stimulated research into the development of Ti-Nb based SMAs as potential replacements of Ti-Ni alloys in biomedical applications. Ti-Nb alloys have attracted attention because of their low stiffness and superelasticity. Superelastic thin films can be used in medical applications, including the fabrication of stents for neurovascular blood vessels, which relies on a thin film and on the use of a Ti-Nb alloy coating for less biocompatible alloys. In this study, Ti-Nb thin films were prepared using magnetron sputtering. A Nb content in the range 12.2-35.9 at.% was used in the films, which was determined using energy-dispersive X-ray spectroscopy. X-ray diffraction measurement was used to analyze the crystal structure of the thin films, and their mechanical properties were investigated using nanoindentation.
形状记忆合金（SMA）常用于各种应用，例如航空航天和汽车工业、机器人技术和生物医学科学。虽然 Ti-Ni SMA 已经商业化，但 Ni 的低生物相容性促使人们研究开发基于 Ti-Nb 的 SMA，作为生物医学应用中 Ti-Ni 合金的潜在替代品。Ti-Nb 合金因其低刚度和超弹性而受到关注。超弹性薄膜可用于医疗应用，包括用于治疗神经血管的支架的制造，这依赖于薄膜和使用 Ti-Nb 合金涂层来代替生物相容性较差的合金。在这项研究中，使用磁控溅射法制备了 Ti-Nb 薄膜。薄膜中的 Nb 含量在 12.2-35.9 原子百分比范围内，这是通过能谱仪确定的。X 射线衍射测量用于分析薄膜的晶体结构，并通过纳米压痕法研究它们的机械性能。
