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    MOLYBDENUM CRUCIBLE
    1.
    发明申请
    MOLYBDENUM CRUCIBLE 审中-公开

    公开(公告)号：US20190071793A1

    公开(公告)日：2019-03-07

    申请号：US16079733

    申请日：2017-02-23

    申请人： A.L.M.T. Corp.

    发明人： Makoto Watanabe ,  Yoshitake Fukaya ,  Masahiro Katoh ,  Hidenobu Nishino

    IPC分类号： C30B35/00 ,  C22F1/18 ,  C30B29/20

    摘要： The ratio of the coarse grain region in the side wall in the thickness direction thereof is 10% or more and less than 90%. The coarse grain region is defined as such a region in which crystal grains having a grain size of 1 mm or more determined by an intercept method in the height direction of the crucible occupy 95% or more of an area of a measurement region, and the fine grain region is defined as such a region in which crystal grains having a grain size of 10 μm or more and 500 μm or less determined by the intercept method in the height direction of the crucible occupy 95% or more of the area of the measurement region.

    CRUCIBLE FOR GROWING SAPPHIRE SINGLE CRYSTAL, AND METHOD FOR PRODUCING CRUCIBLE FOR GROWING SAPPHIRE SINGLE CRYSTAL
    2.
    发明申请
    CRUCIBLE FOR GROWING SAPPHIRE SINGLE CRYSTAL, AND METHOD FOR PRODUCING CRUCIBLE FOR GROWING SAPPHIRE SINGLE CRYSTAL 有权
    用于生长SAPPHIRE单晶的可行性，以及用于生产用于生长SAPPHIRE单晶的可溶性的方法

    公开(公告)号：US20150225870A1

    公开(公告)日：2015-08-13

    申请号：US14430591

    申请日：2013-09-12

    申请人： A.L.M.T. Corp

    发明人： Masahiro Katoh ,  Makoto Watanabe

    IPC分类号： C30B11/00 ,  C23C4/18 ,  C23C4/08 ,  C23C4/12 ,  C30B29/20 ,  C23C4/02

    CPC分类号： C30B11/002 ,  C23C4/02 ,  C23C4/08 ,  C23C4/12 ,  C23C4/18 ,  C30B29/20 ,  C30B35/002 ,  F27D2005/0075 ,  Y10T117/1092

    摘要： An object of this invention is to provide a crucible for growing a sapphire single crystal, which is optimized for providing a sapphire single crystal and is reusable. A crucible for growing a sapphire single crystal of this invention includes: a base material (3) containing molybdenum as a main component and having a crucible shape; and a coating layer (5) with which only an inner periphery of the base material (3) is coated and which is formed of tungsten and inevitable impurities, in which the coating layer (5) has a surface roughness Ra of 5 μm or more and 20 μm or less.

    摘要翻译： 本发明的目的是提供一种用于生长蓝宝石单晶的坩埚，该坩埚被优化用于提供蓝宝石单晶并且是可再利用的。 用于生长本发明的蓝宝石单晶的坩埚包括：以钼为主要成分并具有坩埚形状的基材（3）; 以及涂层（5），其中仅涂覆基材（3）的内周并且由钨和不可避免的杂质形成，其中涂层（5）的表面粗糙度Ra为5μm以上 和20μm以下。

    Molybdenum crucible
    5.
    发明授权
    Molybdenum crucible 有权

    公开(公告)号：US10858759B2

    公开(公告)日：2020-12-08

    申请号：US16079733

    申请日：2017-02-23

    申请人： A.L.M.T. Corp.

    发明人： Makoto Watanabe ,  Yoshitake Fukaya ,  Masahiro Katoh ,  Hidenobu Nishino

    IPC分类号： C30B35/00 ,  C30B29/20 ,  C22F1/18 ,  F27B14/10 ,  F27D1/00 ,  C22F1/00 ,  B22F5/00 ,  B22F3/12 ,  C22C1/04

    摘要： The molybdenum crucible includes a cylindrical side wall and a bottom provided integrally with one end of the side wall. The side wall includes a coarse grain region configured to extend from an outer wall toward an inner wall and a fine grain region configured to extend from the inner wall toward the outer wall so as to be in contact with the coarse grain region. The ratio of the coarse grain region in the side wall in the thickness direction thereof is 10% or more and less than 90%. The coarse grain region is defined as such a region in which crystal grains having a grain size of 1 mm or more determined by an intercept method in the height direction of the crucible occupy 95% or more of an area of a measurement region.