School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China.
Med Biol Eng Comput. 2011 Mar;49(3):359-64. doi: 10.1007/s11517-010-0685-z. Epub 2010 Oct 9.
We have established the micro-magnetic field on the surfaces of 316L stainless steel and NiTi alloy through the magnetization process of sol-gel prepared TiO(2) thin film with the powder of SrFe(12)O(19). The nano-sized with brown color of SrFe(12)O(19) powder was verified by transmission electron microscope. By using X-ray diffraction, surface roughometer, and corrosion experimental test, the deposited thin film can decrease the etching of body fluid as well as prevent the hazardous Ni ions released from the metal. Moreover, with evaluation of dynamic cruor time test and blood platelets adhesion test, we found the micro-magnetic field of the thin film can improve the blood compatibility.
我们通过 SrFe(12)O(19) 粉末对溶胶-凝胶法制备的 TiO(2) 薄膜进行磁化处理，在 316L 不锈钢和 NiTi 合金表面建立了微磁场。通过透射电子显微镜验证了 SrFe(12)O(19) 粉末的纳米级棕色。通过 X 射线衍射、表面粗糙度仪和腐蚀实验测试，沉积的薄膜可以减少体液的侵蚀，并防止金属释放出有害的 Ni 离子。此外，通过动态凝血时间试验和血小板黏附试验评价，我们发现薄膜的微磁场可以提高血液相容性。
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