Manso Miguel, Herrero P, Fernández M, Langlet M, Martínez-Duart J M
Departmento Física Aplicada, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
J Biomed Mater Res A. 2003 Mar 15;64(4):600-5. doi: 10.1002/jbm.a.10397.
Hydroxyapatite (HAP) bioceramic coatings grown onto titanium-nitride (TiN) buffer layers by the aerosol-gel procedure present interfaces with a preferred growth orientation. These coatings were crystallized at 800 degrees C and subsequently etched to ease the study of the interface by Auger electron spectroscopy depth profiling. Ion beam milling was applied to cross-section samples to analyze the interface structures using transmission electron microscopy. At the interface, the HAP crystals showed a <002> orientation. It was shown by Auger electron spectroscopy depth profiling that O atoms diffuse into the nitride interlayer, indicating that the formation of O channels in the HAP structure is the driving force inducing the textured film. The outstanding biocompatible properties of both the materials and properties of their interface suggest that HAP/TiN structures are particularly well suited for endoprosthetic applications.
通过气溶胶凝胶法生长在氮化钛（TiN）缓冲层上的羟基磷灰石（HAP）生物陶瓷涂层呈现出具有择优生长取向的界面。这些涂层在800℃下结晶，随后进行蚀刻以便通过俄歇电子能谱深度剖析来研究界面。对横截面样品应用离子束铣削，以使用透射电子显微镜分析界面结构。在界面处，HAP晶体呈现<002>取向。俄歇电子能谱深度剖析表明，O原子扩散到氮化物中间层中，这表明HAP结构中O通道的形成是诱导织构化薄膜的驱动力。这两种材料及其界面的优异生物相容性表明，HAP/TiN结构特别适合用于内置假体应用。
