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首页> 外文期刊>Journal of Crystal Growth >Morphology and formation mechanism of metallic inclusions in VB-grown sapphire crystals
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Morphology and formation mechanism of metallic inclusions in VB-grown sapphire crystals

机译：VB生长的蓝宝石晶体中金属夹杂物的形态和形成机理

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摘要

Morphologies of metallic inclusions observed in sapphire crystals grown by the vertical Bridgman (VB) technique using a tungsten (W) crucible were investigated. Square- or hexagonal-shaped inclusions 2-5 μm in size were observed in sapphire crystals around the interface between the seed and the grown crystal. It was found that such inclusions consisted of W metal used for the crucible. The morphology of some of the inclusions reflects a rhombic dodecahedron which is based on the cubic structure of W and is surrounded by {110} faces. It is probable that inclusions form in the sapphire melt during the crystal growth process, and then sink in the melt to the growth interface due to the high density of W.
机译：研究了使用钨（W）坩埚通过垂直Bridgman（VB）技术生长的蓝宝石晶体中观察到的金属夹杂物的形态。在种子和生长晶体之间的界面周围的蓝宝石晶体中观察到大小为2-5μm的方形或六边形内含物。发现这种夹杂物由用于坩埚的W金属组成。一些夹杂物的形态反映出菱形的十二面体，其基于W的立方结构并被{110}面包围。蓝宝石熔体在晶体生长过程中可能形成夹杂物，然后由于W的高密度而在熔体中沉入生长界面。

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  • 来源
    《Journal of Crystal Growth》 |2014年第1期|388-391|共4页
  • 作者

    T. Taishi; T. Kobayashi; M. Shinozuka; E. Ohba; C. Miyagawa; K. Hoshikawa;

  • 作者单位

    Faculty of Engineering, Shinshu University, Wakasato, Nagano 380-8533, Japan;

    Fujikoshi Machinery Corporation, 7650 Kiyono Matsushiro-machi, Nagano 381-1233, Japan;

    Fujikoshi Machinery Corporation, 7650 Kiyono Matsushiro-machi, Nagano 381-1233, Japan;

    Faculty of Engineering, Shinshu University, Wakasato, Nagano 380-8533, Japan,Fujikoshi Machinery Corporation, 7650 Kiyono Matsushiro-machi, Nagano 381-1233, Japan;

    Faculty of Engineering, Shinshu University, Wakasato, Nagano 380-8533, Japan,Fujikoshi Machinery Corporation, 7650 Kiyono Matsushiro-machi, Nagano 381-1233, Japan;

    Faculty of Engineering, Shinshu University, Wakasato, Nagano 380-8533, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    A1. Defect; A1. Inclusion; A2. Bridgman technique; A2. Growth from melt; B1. Sapphire; B3. Light emitting diodes;

    机译：A1。缺陷;A1。包容性A2。布里奇曼技术;A2。从熔体中生长;B1。蓝宝石;B3。发光二极管;

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