Hydrothermal synthesis of single-crystal α-tristrontium phosphate particles

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• 作者：Akihiro Ishida^a ; ¹ ; Shigeo Hori^b ; ¹ ; Toshihiko Tani^b ; Tomoko Ikeda-Fukazawa^a ; Mamoru Aizawa^a ; ^{mamorua@meiji.ac.jp" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Anisotropic ceramics ; Tristrontium phosphate ; Hexagonal plate-like particles ; Hydrothermal treatment ; Transmission electron microscopy
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：37
• 期：1
• 页码：351-357
• 全文大小：2112 K

文摘

Anisotropic ceramic bodies can be fabricated by a reactive template grain growth method; however, template particles with suitable powder properties are required to create the ceramics with well controlled anisotropy. Therefore, we synthesized well-isolated α-tristrontium phosphate (α-TSP) particles with a hexagonal plate-like shape as template particles for anisotropic strontium apatite ceramics using α-strontium hydrogen phosphate (α-SrHPO₄) precursor particles. Three synthetic parameters were varied: (i) precursor particle size, (ii) stirring rate, and (iii) hydrothermal temperature. Well-isolated hexagonal plate-like α-TSP single-crystal particles were successfully synthesized by hydrothermal treatment at 150 °C for 3 h at a stirring rate of 150 rpm using fine α-SrHPO₄ precursor particles. The developed plane of the hexagonal plate-like α-TSP particles was determined to be the {00l} plane, and the side planes were revealed to be not {h00} planes, but inclined {h0l} planes. The resulting α-TSP particles may provide a promising template for the development of anisotropic apatite-based ceramics.