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首页> 外文期刊>Materials science & engineering >Beta tricalcium phosphate ceramics with controlled crystal orientation fabricated by application of external magnetic field during the slip casting process
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Beta tricalcium phosphate ceramics with controlled crystal orientation fabricated by application of external magnetic field during the slip casting process

机译：在粉浆浇铸过程中通过施加外部磁场制造具有受控晶体取向的β-磷酸三钙陶瓷

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摘要

Beta tricalcium phosphate (β-TCP) is a resorbable bioceramic that has hitherto been utilized in the medical field. Since it crystallizes in the anisotropic hexagonal system, properties such as chemical and physical ones are expected to depend on its crystal axis direction and/or on its crystal plane (anisotropy). Control of crystal orientation is thus important when used in polycrystalline form. Meanwhile, application of a strong magnetic field has been found to be a promising technique to control crystal orientation of anisotropic shape or structured crystals. In this work, we attempted to fabricate β-TCP ceramics with controlled crystal orientation by applying an external magnetic field during the slip casting process and subsequently sintering them at 1050 ℃ below the β-α transition temperature. Application of a vertical magnetic field increased intensities of planes perpendicular to c-plane on the top surface, while a horizontal one with simultaneous mechanical mold rotation decreased it. These results indicated that crystal orientation of β-TCP ceramics were successfully controlled by the external magnetic field and together that the magnetic susceptibility of β-TCP is χ_(c⊥)＞ χ_(c∥).
机译：β磷酸三钙（β-TCP）是一种可再吸收的生物陶瓷，迄今已在医学领域得到利用。由于它在各向异性的六方晶系中结晶，因此诸如化学和物理性质的特性预计将取决于其晶轴方向和/或取决于其晶面（各向异性）。因此，当以多晶形式使用时，控制晶体取向很重要。同时，已经发现施加强磁场是控制各向异性形状或结构化晶体的晶体取向的有前途的技术。在这项工作中，我们尝试通过在粉浆浇铸过程中施加外部磁场，然后在低于β-α转变温度1050℃的条件下烧结，来制造具有受控晶体取向的β-TCP陶瓷。垂直磁场的施加增加了垂直于顶面上c平面的平面的强度，而水平磁场同时具有机械模具旋转的强度降低了它。这些结果表明，β-TCP陶瓷的晶体取向已成功地受到了外部磁场的控制，并且β-TCP的磁化率合计为χ_（c⊥）＞χ_（c∥）。

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  • 来源
    《Materials science & engineering》 |2013年第5期|2967-2970|共4页
  • 作者

    Takeshi Hagio; Kazushige Yamauchi; Takenori Kohama; Toshiya Matsuzaki; Kazuhiko Iwai;

  • 作者单位

    Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan;

    Department of Material Physics and Energy Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;

    Department of Material Physics and Energy Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;

    Department of Material Physics and Energy Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;

    Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    β-TCP; Hexagonal system; Anisotropy; Crystal orientation; Magnetic field;

    机译：β-TCP;六角系统各向异性晶体取向磁场;

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