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近等原子比的NiTi合金作为生物医用材料,以其优异的特性而在医学各科临床得到广泛应用.但由于Ni离子释放而引起的潜在毒性和无生物活性问题,抑制了NiTi合金在生物医用领域的进一步发展.对医用NiTi合金进行表面改性是解决上述问题的有效途径,并成为近年国内外研究的热点.本文全面阐述了近几年来国内外对医用NiTi合金的表面改性方法的研究进展,并对各种方法可能出现的问题进行了分析;提出了采用微弧氧化技术对NiTi合金表面改性的可行性.

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