Surface analysis and electrochemical characterization on micro-patterns of biomedical Nitinol after nanosecond laser irradiating
Surface analysis and electrochemical characterization on micro-patterns of biomedical Nitinol after nanosecond laser irradiating
复制标题
纳秒激光照射后生物医用镍钛合金微图案的表面分析和电化学表征
DOI：
10.1016/j.surfcoat.2020.125730
复制
发表时间：
2020-06-15
影响因子：
5.4
通讯作者：
Dong, Peng
中科院分区：
文献类型：
--
作者：
Cui, Zeqin;Li, Shang;Dong, Peng
在本工作中，镍钛合金的微图案表面后，一种新的纳秒激光照射准确和有效的特点。丰富的2D/3D图像说明了微/纳米结构的表面形貌和粗糙度。利用能谱仪和X射线光电子能谱仪分析了表面成分。最重要的是，电化学腐蚀实验结果表明，与其他样品相比，甜甜圈状微图案表面表现出最好的抗腐蚀性能。所有的初步结果清楚地表明纳秒激光微处理对镍钛合金的表面状态和由此产生的腐蚀行为的影响。研究结果为激光一步成形生物医用合金同时提高其耐腐蚀性和生物相容性提供了一条潜在的途径。
In the present work, micro-pattern surfaces of Nitinol after a novel nanosecond laser irradiating were accurately and efficiently characterized. Fruitful 2D/3D images illustrate surface topography and roughness of micro/nanostructures. Energy dispersive spectrometer and X-ray photoelectron spectrometry was utilized to reveal surface compositions. Most importantly, the results of electrochemical corrosion experiments present the donuts-like micro-pattern surface performs the best anti-corrosion performance compared with other samples. All of the preliminary results clearly demonstrate the effects of nanosecond laser micro-processing on the surface state and the resultant corrosion behavior of Nitinol. The findings would provide a potential path way to simultaneously improve the corrosion resistance and biocompatibility of biomedical alloys by laser one-step manufacturing.