水热处理后钛表面陶瓷涂层的微观结构

Microstructure of ceramic coating on titanium surface as a result of hydrothermal treatment.

作者信息

De Andrade M C, Sader M S, Filgueiras M R, Ogasawara T

机构信息

Ceramic Research Group, Department of Metallurgical and Materials Engineering, COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, P.C. 21945-970, Brazil.

出版信息

J Mater Sci Mater Med. 2000 Nov;11(11):751-5. doi: 10.1023/a:1008984030540.

DOI:10.1023/a:1008984030540

PMID:15348081

Abstract

Hydroxyapatite coating on commercially pure titanium has been produced by a biomimetic method in order to improve osteointegration for medical implant purposes. A specific chemical treatment by etching titanium substrate with different concentrations of NaOH aqueous solution at 130 degrees C in an autoclave, followed by heat treatment at 600 degrees C was selected to obtain an activated titanium substrate. The microporous surface obtained has allowed the nucleation and growth of a calcium phosphate layer by soaking the substrate in a simulated body fluid (SBF). Scanning electron microscopy (SEM) together with energy dispersive analyzer for X-ray (EDS), X-ray diffraction (XRD) as well as Fourier transform infrared spectroscopy (FT-IR) were employed to evaluate the hydroxyapatite coating. A homogeneous structure coating without cracks defined the chemical treatment condition of the substrate.

摘要

为了改善医用植入物的骨整合性能，采用仿生方法在工业纯钛上制备了羟基磷灰石涂层。选择在高压釜中于130℃用不同浓度的氢氧化钠水溶液蚀刻钛基体进行特定化学处理，然后在600℃进行热处理，以获得活化的钛基体。通过将基体浸泡在模拟体液（SBF）中，所得的微孔表面使磷酸钙层成核并生长。采用扫描电子显微镜（SEM）、X射线能谱仪（EDS）、X射线衍射（XRD）以及傅里叶变换红外光谱（FT-IR）对羟基磷灰石涂层进行评估。无裂纹的均匀结构涂层确定了基体的化学处理条件。