首页> 外文期刊>Acta biomaterialia >The structure of titanate nanobelts used as seeds for the nucleation of hydroxyapatite at the surface of titanium implants.
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The structure of titanate nanobelts used as seeds for the nucleation of hydroxyapatite at the surface of titanium implants.

机译:钛酸盐纳米带的结构,可作为种子在钛植入物表面成核羟基磷灰石。

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摘要

The sequence of steps of a chemical treatment having as its goal the induce of nucleation and the growth of hydroxyl carbonated apatite (HCA) at the surface of titanium implants was studied by scanning and transmission electron microscopy in cross-section. In the first step, an acid etching forms a rough titanium hydride layer, which remains unchanged after subsequent treatments. In the second step, soaking in an NaOH solution induces the growth of nanobelt tangles of nanocrystallized, monoclinic sodium titanate. In the third step, soaking in simulated body fluid transforms sodium titanate into calcium titanate by ion-exchange in the monoclinic structure. HCA then grows and embodies the tangled structure. The interfaces between the different layers seem to be strong enough to prevent interfacial decohesion. Finally, the role of the titanate structure in the nucleation process of HCA is discussed.
机译:通过扫描和透射电子显微镜的横截面研究了以钛成核表面上成核的诱导和碳酸羟基磷灰石(HCA)的生长为目标的化学处理步骤的顺序。在第一步中,酸蚀形成粗糙的氢化钛层,该氢化钛层在后续处理后保持不变。在第二步中,浸泡在NaOH溶液中会诱导纳米结晶单斜钛酸钠的纳米带缠结的生长。第三步,浸泡在模拟体液中,通过单斜晶结构中的离子交换将钛酸钠转变成钛酸钙。然后,HCA生长并体现出纠结的结构。不同层之间的界面似乎足够坚固,可以防止界面脱粘。最后,讨论了钛酸酯结构在HCA成核过程中的作用。

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