发明名称 |
Arc discharge apparatus, apparatus and method for manufacturing vitreous silica glass crucible, and method for pulling up silicon single crystal |
摘要 |
The arc discharge apparatus comprises a plurality of carbon electrodes connected to respective phases of a power supply for heating a silica powder and causing it to fuse by generating arc discharge between the carbon electrodes. All of the carbon electrodes have a density in a range from 1.30 g/cm3 to 1.80 g/cm3, and variability in density among the carbon electrodes is 0.2 g/cm3 or less. The carbon particles that constitute the carbon electrodes preferably have a particle diameter of 0.3 mm or less. |
申请公布号 |
US8172942(B2) |
申请公布日期 |
2012.05.08 |
申请号 |
US20080253500 |
申请日期 |
2008.10.17 |
申请人 |
FUKUI MASANORI;SUZUKI KOICHI;FUJITA TAKESHI;JAPAN SUPER QUARTZ CORPORATION;SUMCO CORPORATION |
发明人 |
FUKUI MASANORI;SUZUKI KOICHI;FUJITA TAKESHI |
分类号 |
C30B11/00;C30B15/00;C30B17/00;C30B21/02;C30B21/06;C30B27/02;C30B28/06;C30B28/10;C30B30/04;C30B35/00 |
主分类号 |
C30B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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