发明名称 |
Solution doping of porous preforms. |
摘要 |
<p>Disclosed is a method of forming a doped glass body. The glass body is formed by adding a dopant to a glass preform, at least part of which has interconnective pores. The porous preform is immersed in a solution of a salt of the dopant dissolved in an organic solvent having no OH groups. The solvent is removed, and the porous glass preform is heat treated to consolidate it into a non-porous glassy body containing the dopant dispersed throughout at least a portion of the body. An OH-free solvent is selected because of its beneficial effect on the preform during the drying step. Whereas OH-containing solvents such as water and alcohol caused cracking and/or flaking of the outer surface of the porous preform following the drying step, an undamaged surface is formed by the present invention. <IMAGE></p> |
申请公布号 |
EP0517955(A1) |
申请公布日期 |
1992.12.16 |
申请号 |
EP19910121938 |
申请日期 |
1991.12.20 |
申请人 |
CORNING INCORPORATED |
发明人 |
BARTHOLOMEW, ROGER FRANK, CORNING INCORPORATED;SADD, ANDREA LOUISE, CORNING INCORPORATED |
分类号 |
C03B8/04;C03B8/00;C03B20/00;C03B37/014;C03C3/06;C03C13/04;C03C23/00;G02B6/00 |
主分类号 |
C03B8/04 |
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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