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首页> 外文期刊>Journal of Materials Engineering and Performance >Rapid Obtaining of Nano-Hydroxyapatite Bioactive Films on NiTi Shape Memory Alloy by Electrodeposition Process
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Rapid Obtaining of Nano-Hydroxyapatite Bioactive Films on NiTi Shape Memory Alloy by Electrodeposition Process

机译：电沉积法快速制备NiTi形状记忆合金上的纳米羟基磷灰石生物活性膜

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摘要

Nano-hydroxyapatite (n-HA) crystalline films have been developed in this study by electrodeposition method on NiTi shape memory alloy (SMA). The electrodeposition of the n-HA films was carried out using 0.042 mol/L Ca(NO_3)_2 · 4H_2O + 0.025 mol/L (NH_4) · 2HPO_4 electrolytes by applying a constant potential of -2.0 V for 120 min and keeping the solution temperature at 70℃. The characterization of n-HA films is of special importance since bioactive properties related to n-HA have been directly identified with its specific composition and crystalline structure. AFM, XRD, EDX, FEG-SEM and Raman spectroscopy shows a homogeneous film, with high crystallinity, special composition, and bioactivity properties (Ca/P = 1.93) of n-HA on NiTi SMA surfaces. The n-HA coating with special structure would benefit the use of NiTi alloy in orthopedic applications.
机译：本研究通过电沉积方法在NiTi形状记忆合金（SMA）上开发了纳米羟基磷灰石（n-HA）晶体膜。 n-HA膜的电沉积使用0.042 mol / L Ca（NO_3）_2·4H_2O + 0.025 mol / L（NH_4）·2HPO_4电解质通过施加-2.0 V恒定电位120分钟并保持溶液温度在70℃。 n-HA膜的表征特别重要，因为与n-HA相关的生物活性特性已通过其特定的组成和晶体结构直接确定。 AFM，XRD，EDX，FEG-SEM和拉曼光谱显示出均匀的膜，在NiTi SMA表面上具有高结晶度，特殊的成分以及n-HA的生物活性（Ca / P = 1.93）。具有特殊结构的n-HA涂层将有利于NiTi合金在整形外科应用中的使用。

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