, Volume 49, Issue 3, pp 359-364
Date: 09 Oct 2010

Effects of micro-magnetic field at the surface of 316L and NiTi alloy on blood compatibility

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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 TiO2 thin film with the powder of SrFe12O19. The nano-sized with brown color of SrFe12O19 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.