发明名称 |
Mould parts of silicon nitride and method for producing such mould parts |
摘要 |
The present invention relates to silicon nitride mould parts, particularly crucibles for use in connection with directional solidification and pulling of silicon single crystals. The mould parts consist of Si<SUB>3</SUB>N<SUB>4 </SUB>having a total open porosity between 40 and 60% by volume and where more than 50% of the pores in the surface of the mould parts have a size which is larger than the means size of the Si<SUB>3</SUB>N<SUB>4 </SUB>particles. The invention further relates to a method for producing the silicon nitride mould parts.
|
申请公布号 |
US7422631(B2) |
申请公布日期 |
2008.09.09 |
申请号 |
US20050520834 |
申请日期 |
2005.02.03 |
申请人 |
CRUSIN AS |
发明人 |
OLSEN ESPEN;SOLHEIM ARVE;SORHEIM HAVARD |
分类号 |
C01B21/06;B22F1/00;B22F3/093;B22F3/10;C01B21/068;C04B35/591;C04B38/00;C30B11/00;C30B15/00;C30B15/10;C30B27/02;C30B28/10 |
主分类号 |
C01B21/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|