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首页> 外文期刊>Journal of food quality >Atomic-Scale {1010} Interfacial Structure in Hydroxyapatite Determined by High-Resolution Transmission Electron Microscopy
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Atomic-Scale {1010} Interfacial Structure in Hydroxyapatite Determined by High-Resolution Transmission Electron Microscopy

机译：高分辨率透射电镜测定羟基磷灰石的原子尺度{1010}界面结构

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摘要

The atomic structure of {1010} interfaces in sintered hydroxy-apatite (HAp) was characterized using high-resolution electron microscopy (HRTEM). When subjected to electron beam radiation parallel to the [0001] zone axis, a characteristic damage of HAp occurred. The damage was identified by hexagonally shaped regions surrounded with {1010} planes, in which the crystalline phase was thinned and amorphized. HRTEM study at the crystalline-amorphous interfaces revealed that the HAp crystal structure was terminated by a plane crossing the hydroxyl columns on which Ca (Ca2 site) and PO_4 tetrahedra were placed. The grain boundaries parallel to the {1010} planes were also examined and the structure was identical to that observed in the crystalline-amorphous interface. The interface structure observed in the crystalline-amorphous interfaces and grain boundaries is probably a stable atomic arrangement of HAp {1010} surfaces with a low surface energy.
机译：使用高分辨率电子显微镜（HRTEM）表征了烧结羟基磷灰石（HAp）中{1010}界面的原子结构。当受到平行于[0001]区域轴的电子束辐射时，会发生HAp的特征性损坏。通过用{1010}平面包围的六边形区域识别损伤，其中结晶相变薄并非晶化。在晶体-非晶界面上进行的HRTEM研究表明，HAp晶体结构被一个与羟基柱交叉的平面终止，在羟基柱上放置了Ca（Ca2位）和PO_4四面体。还检查了平行于{1010}晶面的晶界，其结构与在晶体-非晶界面上观察到的结构相同。在晶体-非晶界面和晶界中观察到的界面结构可能是具有低表面能的HAp {1010}表面的稳定原子排列。

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  • 来源
    《Journal of food quality》 |2002年第12期|p.3055-3058|共4页
  • 作者

    Kimiyasu Sato; Toshihiro Kogure; Hayato Iwai; Junzo Tanaka;

  • 作者单位

    Advanced Sintering Technology Group, Ceramic Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Anagahora 2266-98, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 一般性问题;
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