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首页> 外文会议>13th International Symposium on Ceramics in Medicine and the Annual Meeting of the International Society for Ceramics in Medicine 22-26 November 2000 Bologna, Italy >Atomic Scale Interfacial Structure of Hydroxyapatite Observed with High-Resolution Transmission Electron Microscopy
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Atomic Scale Interfacial Structure of Hydroxyapatite Observed with High-Resolution Transmission Electron Microscopy

机译：高分辨率透射电镜观察羟基磷灰石的原子尺度界面结构

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摘要

The structure of (100) interfaces of sintered hydroxyapatite (HAp) was characterized with high-resolution transmission electron microscopy. The grain boundaries parallel to (100) planes were termined with a plane crossing the hydroxyl columns, where existed PO_4 tetrahedra and Ca(2) ions. When subjected to continuous electron beam irradiation parallel to the (001) zone axis, irradiation-induced damage of HAp occurred, resulting in the vitrification of hexagonal areas surrounded with (100) planes. The interfaces between the vitrified and crystalline regions are expected to posses the atomic arrangement identical to that observed in the grain boundaries. We propose the atomic arrangement as the most stable structure of the (100) facet.
机译：用高分辨率透射电子显微镜对羟基磷灰石（HAp）的（100）界面进行了表征。平行于（100）平面的晶界被定义为一个与羟基柱交叉的平面，其中存在PO_4四面体和Ca（2）离子。当进行平行于（001）区域轴的连续电子束辐照时，发生辐照引起的HAp破坏，导致被（100）平面包围的六边形区域玻璃化。期望玻璃化和结晶区域之间的界面具有与在晶界中观察到的原子排列相同的原子排列。我们提出原子排列是（100）面中最稳定的结构。

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