Aging of ceramic carbonized hydroxyapatite at room temperature

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• 作者：M. V. Tkachenko ; A. S. Kamzin
• 刊名：Physics of the Solid State
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：58
• 期：8
• 页码：1552-1559
• 全文大小：3,702 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Solid State Physics and Spectroscopy
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1090-6460
• 卷排序：58

文摘

The process of aging of ceramic carbonized hydroxyapatite (CHA) produced in a dry carbon dioxide atmosphere at temperatures of 800–1200°C has been studied by chemical and X-ray structural analysis, infrared spectroscopy, and scanning electron microscopy methods. The phase composition and structure of initial prepared ceramics samples and those aged for a year have been compared. It has been shown that relaxation of internal stresses occurring during pressed sample sintering causes plastic deformation of crystallites at room temperature, accompanied by redistribution of carbonate ions between A1, A2, B1, and B2 sites and CHA decomposition with the formation of CaO separations.Original Russian Text © M.V. Tkachenko, A.S. Kamzin, 2016, published in Fizika Tverdogo Tela, 2016, Vol. 58, No. 8, pp. 1502–1509.