Abnormal grain growth of hydroxyapatite ceramic sintered in a high magnetic field

作者：Chen Shuxiang^*; Wang Weishan; Kono Hirokage; Sassa Kensuke; Asai Shigeo

来源：Journal of Crystal Growth, 2010, 312(2): 323-326.

DOI：10.1016/j.jcrysgro.2009.09.039

• Abnormal grain growth (AGG)
• Crystallites
• High magnetic field
• Growth from melt
• Biological substances
• Hydroxyapatite

An investigation has been made on the abnormal grain growth of crystal oriented hydroxyapatite in sintering using a high magnetic field. According to X-ray diffraction and microstructure analysis, a high magnetic field in sintering could not affect the crystal direction of the hydroxyapatite, which was previously oriented by a high magnetic field in a slip casting, but influence the growth of hydroxyapatite grains. If the magnetic field, the direction of which was perpendicular to the a- and b-axis crystal orientation of the hydroxyapatite, was applied during the sintering process, abnormal growth grains were produced. On the other hand, if the applied magnetic was parallel to the a- and b-axis crystal orientation of the hydroxyapatite, the abnormal growth was restrained and grains with rather uniform sizes were produced.

• 出版日期2010-1-1
• 单位山东省产品质量监督检验研究院