发明申请
US20150368828A1 METHOD OF MANUFACTURING VITREOUS SILICA CRUCIBLE AND METHOD OF MANUFACTURING SILICON INGOT 有权
制造维生素二氧化硅可溶性的方法和制造硅酮的方法

  • 专利标题: METHOD OF MANUFACTURING VITREOUS SILICA CRUCIBLE AND METHOD OF MANUFACTURING SILICON INGOT
  • 专利标题(中): 制造维生素二氧化硅可溶性的方法和制造硅酮的方法
  • 申请号: US14841564
    申请日: 2015-08-31
  • 公开(公告)号: US20150368828A1
    公开(公告)日: 2015-12-24
  • 发明人: Toshiaki SUDOHiroshi KISHIEriko SUZUKI
  • 申请人: SUMCO CORPORATION
  • 优先权: JP2010145565 20100625
  • 主分类号: C30B15/10
  • IPC分类号: C30B15/10 C30B29/06 C03B19/09
METHOD OF MANUFACTURING VITREOUS SILICA CRUCIBLE AND METHOD OF MANUFACTURING SILICON INGOT
摘要:
A method of manufacturing of a vitreous silica crucible includes: fusing silica powder under a reduced pressure of −50 kPa or more and less than −95 kPa to form a transparent vitreous silica layer as an inner layer; fusing silica powder under a reduced pressure of 0 kPa or more and less than −10 kPa to form a bubble-containing vitreous silica layer as an intermediate layer; and fusing silica powder under a reduced pressure of −10 kPa or more and less than −50 kPa to form a semi-transparent vitreous silica layer as an outer layer.
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