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首页> 外文期刊>Acta biomaterialia >Preparation of bioactive Ti metal surface enriched with calcium ions by chemical treatment.
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Preparation of bioactive Ti metal surface enriched with calcium ions by chemical treatment.

机译：通过化学处理制备富含钙离子的生物活性钛金属表面。

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A calcium solution treatment was applied to a NaOH-treated titanium metal to give it bioactivity, scratch resistance and moisture resistance. The titanium metal was soaked in a 5 M NaOH solution and then a 100 mM CaCl(2) solution to incorporate Ca(2+) ions into the titanium metal surface by ion exchange. This treated titanium metal was subsequently heated at 600 degrees C and soaked in hot water at 80 degrees C. The NaOH treatment incorporated approximately 5 at.% Na(+) ions into the Ti metal surface. These Na(+) ions were completely replaced by Ca(2+) ions by the CaCl(2) treatment. The number of Ca(2+) ions remained even after subsequent heat and water treatments. Although the NaOH-CaCl(2)-treated titanium metal showed slightly higher apatite-forming ability in a simulated body fluid than the NaOH-treated titanium metal, it lost its apatite-forming ability during the heat treatment. However, subsequent water or autoclave treatment restored the apatite-forming ability of the NaOH-CaCl(2)-heat-treated titanium metal. Although the apatite-forming ability of the NaOH-heat-treated titanium metal decreased dramatically when it was kept at high humidity, that of NaOH-CaCl(2)-heat-water-treated titanium metal was maintained even in the humid environment. The heat treatment increased the critical scratch resistance of the surface layer of the NaOH-CaCl(2)-treated titanium metal remarkably, and it did not deteriorate on subsequent water treatment.
机译：将钙溶液处理应用于经NaOH处理的钛金属，以使其具有生物活性，耐刮擦性和耐湿性。将钛金属浸泡在5 M NaOH溶液中，然后浸泡在100 mM CaCl（2）溶液中，以通过离子交换将Ca（2+）离子掺入钛金属表面。随后将这种处理过的钛金属加热到600摄氏度，并浸入80摄氏度的热水中。NaOH处理将大约5 at。％的Na（+）离子掺入Ti金属表面。这些Na（+）离子被CaCl（2）处理完全替换为Ca（2+）离子。即使在随后的热处理和水处理之后，Ca（2+）离子的数量仍保持不变。尽管在模拟体液中用NaOH-CaCl（2）处理的钛金属比用NaOH处理的钛金属显示稍高的磷灰石形成能力，但在热处理过程中失去了其磷灰石形成能力。但是，随后的水或高压釜处理恢复了NaOH-CaCl（2）热处理的钛金属的磷灰石形成能力。尽管将NaOH热处理的钛金属保持在高湿度下时其磷灰石形成能力急剧下降，但即使在潮湿的环境中，也可以保持NaOH-CaCl（2）热处理的钛金属的磷灰石形成能力。热处理显着提高了经NaOH-CaCl（2）处理的钛金属的表面层的临界耐刮擦性，并且在随后的水处理中不会劣化。

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