Chrysoberyl single crystal showing cat's-eye effect and production thereof
专利汇可以提供Chrysoberyl single crystal showing cat's-eye effect and production thereof专利检索，专利查询，专利分析的服务。并且PURPOSE: To produce a high quality large size chrysoberyl single crystal free from a flaw, a strain, etc. by concentrating infrared rays from a halogen lamp or the like on a rodlike high density sintered body contg. Al
2 O
3 , BeO and titanium oxide with a spheroidal mirror to form a melting zone and by growing a single crystal on the zone interface.
CONSTITUTION: Halogen lamp or Xe are lamp 2 is set at one focus of spheroidal mirror 1, and rodlike sintered body raw material 3 contg. Al
2 O
3 , BeO and titanium oxide at the other focus. Material 3 and seed crystal 5 are held with upper and lower rotary shafts 4, 6, respectively, they are sealed in transparent quartz tube 7, and the atmosphere is controlled freely. Infrared rays from lamp 2 are concentrated with mirror 1 to form molten body 8, and by moving crystal 5 upward it is contacted to body 8. After an equilibrium state is attained, by moving shafts 4, 6 the raw material is melted at the interface between body 8 and rod 3, and crystallization takes place at the interface between body 8 and crystal 5.
COPYRIGHT: (C)1980,JPO&Japio，下面是Chrysoberyl single crystal showing cat's-eye effect and production thereof专利的具体信息内容。
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