Enhanced Biocompatibility of Porous Nitinol
Enhanced Biocompatibility of Porous Nitinol
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DOI：
10.1007/s11665-009-9454-2
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发表时间：
2009-08-01
影响因子：
2.3
通讯作者：
Haider, Waseem
中科院分区：
文献类型：
--
作者：
Munroe, Norman;Pulletikurthi, Chandan;Haider, Waseem
多孔镍钛诺（PNT）在医疗行业中有着广泛的应用，如椎体间融合装置、人工骨移植等。然而，与固体镍钛诺相比，PNT的腐蚀倾向预计会更大，因为它与体液接触的表面积更大。在这种情况下，已知表面制备在材料的生物相容性中起主要作用。为了检验表面处理对PNT体外腐蚀性能的影响，本研究对PNT进行了不同的表面处理，如水中煮沸、干燥加热和钝化。按照ASTM F 2129-08标准，在磷酸盐缓冲盐水溶液（PBS）中使用循环极化试验评估每次处理前后合金的局部耐蚀性。
Porous Nitinol (PNT) has found vast applications in the medical industry as interbody fusion devices, synthetic bone grafts, etc. However, the tendency of the PNT to corrode is anticipated to be greater as compared to solid nitinol since there is a larger surface area in contact with body fluids. In such cases, surface preparation is known to play a major role in a material's biocompatibility. In an effort to check the effect of surface treatments on the in vitro corrosion properties of PNT, in this investigation, they were subjected to different surface treatments such as boiling in water, dry heating, and passivation. The localized corrosion resistance of alloys before and after each treatment was evaluated in phosphate buffer saline solution (PBS) using cyclic polarization tests in accordance with ASTM F 2129-08.