Formation of a bioactive calcium titanate layer on gum metal by chemical treatment
Formation of a bioactive calcium titanate layer on gum metal by chemical treatment
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DOI：
10.1007/s10856-012-4569-7
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发表时间：
2012-02
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影响因子：
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通讯作者：
S. Yamaguchi;T. Kizuki;H. Takadama;T. Matsushita;Takashi Nakamura;T. Kokubo
中科院分区：
文献类型：
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作者：
S. Yamaguchi;T. Kizuki;H. Takadama;T. Matsushita;Takashi Nakamura;T. Kokubo
所谓的金属胶，成分为Ti-36Nb-2Ta-3Zr-0.3O，不含细胞毒性元素，具有较低的弹性模量和较高的机械强度。在本研究中，该合金在模拟体液中表现出高容量的磷灰石形成能力，当经历1M NaOH处理，100M CaCl2处理，700℃热处理，然后热水处理。高磷灰石的形成归因于表面析出的CaTi2O5，并被发现即使在潮湿的环境中也能长期保持。处理后的表面具有较高的耐刮擦性，有望在临床上得到应用。表面处理对上述独特的力学性能影响不大。这些结果表明，经过目前表面处理的金属胶具有很高的骨结合潜力，将在骨科和牙科植入物中应用。
The so-called gum metal with the composition Ti–36Nb–2Ta–3Zr–0.3O is free from cytotoxic elements and exhibits a low elastic modulus as well as high mechanical strength. In the present study, it was shown that this alloy exhibited a high capacity for apatite formation in a simulated body fluid when subjected to 1 M NaOH treatment, 100 mM CaCl2treatment, heat treatment at 700°C, and then hot water treatment. The high apatite formation was attributed to the CaTi2O5which was precipitated on its surface, and found to be maintained even in a humid environment over a long period. The treated surface exhibited high scratch resistance, which is likely to be useful in clinical applications. The surface treatment had little effect on the unique mechanical properties described above. These results show that gum metal subjected to the present surface treatments exhibits a high potential for bone-bonding, which will be useful in orthopedic and dental implants.