Growth of Chlorapatite Crystals from a Sodium Chloride Flux

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Well-formed crystals of chlorapatite [Ca<sub>5</sub>Cl(PO<sub>4</sub>)<sub>3</sub>] were first grown from a sodium chloride flux. The solubility of Ca<sub>5</sub>Cl(PO<sub>4</sub>)<sub>3</sub> in NaCl increased with increasing temperature. At 1100 °C, Ca<sub>5</sub>Cl(PO<sub>4</sub>)<sub>3</sub> had a solubility of about 0.15 mol%. The crystal growth of Ca<sub>5</sub>Cl(PO<sub>4</sub>)<sub>3</sub> was conducted by heating a mixture of solute and flux at 1100 °C for 10 h, followed by cooling to 500 °C at a rate of 5 °C h<sup>−1</sup>. Colorless and transparent crystals having lengths up to 4.0 mm and widths of 1.2 mm were grown from high-temperature solutions containing small amounts of solute (0.05—0.5 mol%). The obtained crystals were divided into two distinct morphological types: prisms and needles. The most suitable solute contents for the growth of prismatic and needle crystals were 0.15 and 0.1 mol%, respectively. The crystal forms were also dependent on the solute content. The prismatic crystals were bounded by the {<SUB></SUB>} and {<SUB></SUB>} faces. The needle crystals elongated in the <0001> directions. Calcium, chlorine, phosphorus, and oxygen were almost homogeneously distributed in the crystals.

収録刊行物

  • Bulletin of the Chemical Society of Japan

    Bulletin of the Chemical Society of Japan 70(10), 2483-2487, 1997-10-15

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10008924251
  • NII書誌ID(NCID)
    AA00580132
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00092673
  • NDL 記事登録ID
    4326356
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z53-B35
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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