发明名称 |
Apparatus and method for manufacturing monocrystals |
摘要 |
In a monocrystal producing device using a pulling-down method, a raw material melt 5m is continuously supplied into a crucible 2 to grow a crystal 18 by supplying a powdery raw material 5p onto a premelt plate 3 inside an electric furnace 10 with a powdery raw material supplying device 20 and melting the powdery raw material 5p on the premelt plate 3 to generate the raw material melt 5m, and causing this raw material melt 5m to drop out inside the crucible 2. A dry air is introduced into the powdery raw material 5p inside the powdery raw material tank 6 to prevent moisture of the raw material powder 5p. A transferring tube 9 for transferring the raw material 5m is cooled to prevent the filling in the transferring tube 9 based on melting of the powdery raw material 5p. This makes it possible to produce a monocrystal having a stable chemical composition, a large diameter, and a long size at a low price.
|
申请公布号 |
US6402834(B1) |
申请公布日期 |
2002.06.11 |
申请号 |
US20000485049 |
申请日期 |
2000.01.31 |
申请人 |
TOYO COMMUNICATION EQUIPMENT CO., LTD.;KODAIRA KOHEI |
发明人 |
NAGAI KUNIHIKO;KODAIRA KOHEI;TANAKA HIROYUKI;SAKAMOTO HIDEKI |
分类号 |
C30B15/00;C30B15/02;C30B15/08;C30B15/14;C30B29/30;(IPC1-7):C30B15/18 |
主分类号 |
C30B15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|