多孔二氧化钛层上生物医学磷灰石涂层的形成机制。

Formation mechanism of biomedical apatite coatings on porous titania layer.

作者信息

Huang Ping, Xu Kewei, Han Yong

机构信息

State-key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, PR China.

出版信息

J Mater Sci Mater Med. 2007 Mar;18(3):457-63. doi: 10.1007/s10856-007-2005-1.

DOI:10.1007/s10856-007-2005-1

PMID:17334696

Abstract

A titania containing calcium and phosphate with rough and porous structure was prepared by microarc oxidation. The in vitro bioactivity was examined by immersing the samples into the simulated body fluid (SBF). And the mechanism was also discussed. The results show that only 3 days of immersion in SBF, apatite was formed on the surface, and after 6 days, nearly all the surface covered by apatite. This indicates that the layer can induce the formation of apatite in simulated body fluid. It is analyzed that the key factors of the apatite formation are the hydrolysis of the CaTiO(3) and special structure.

摘要

通过微弧氧化制备了一种含有钙和磷且具有粗糙多孔结构的二氧化钛。通过将样品浸入模拟体液（SBF）中来检测其体外生物活性，并对其作用机制进行了探讨。结果表明，样品在SBF中仅浸泡3天，表面就形成了磷灰石，6天后，几乎整个表面都被磷灰石覆盖。这表明该涂层能在模拟体液中诱导磷灰石的形成。分析认为，磷灰石形成的关键因素是CaTiO(3)的水解和特殊结构。