Hydrothermal synthesis of single-crystal alpha-tristrontium phosphate particles

作者：Ishida Akihiro; Hori Shigeo; Tani Toshihiko; Ikeda Fukazawa Tomoko; Aizawa Mamoru^*

来源：Journal of the European Ceramic Society, 2017, 37(1): 351-357.

DOI：10.1016/j.jeurceramsoc.2016.07.004

• Anisotropic ceramics
• Tristrontium phosphate
• Hexagonal plate-like particles
• Hydrothermal treatment
• Transmission electron microscopy

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 alpha-tristrontium phosphate (alpha-TSP) particles with a hexagonal plate-like shape as template particles for anisotropic strontium apatite ceramics using a strontium hydrogen phosphate (alpha-SrHPO4) precursor particles. Three synthetic parameters were varied: (i) precursor particle size, (ii) stirring rate, and (iii) hydrothermal temperature. Well-isolated hexagonal plate-like alpha-TSP single-crystal particles were successfully synthesized by hydrothermal treatment at 150 degrees C for 3 hat a stirring rate of 150 rpm using fine alpha-SrHPO4 precursor particles. The developed plane of the hexagonal plate-like alpha-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 alpha-TSP particles may provide a promising template for the development of anisotropic apatite-based ceramics.

• 出版日期2017-1