公开(公告)号：WO1996000702A1

公开(公告)日：1996-01-11

申请号：PCT/US1995009353

申请日：1995-06-29

申请人： LOXLEY, Ted, Albert

发明人： BLACKMER, John, Frank ,  PETERS, Klaus-Markus

IPC分类号： C03B19/06

CPC分类号： C03B19/12 ,  C03B19/06 ,  C03B19/066 ,  C03B20/00 ,  C03B2201/24

摘要： A quartz glass article is made from a fired porous silica body or preform having internal pores with chemically-bound hydroxyl groups or other surface reactive groups that react with nitrogen. After a nitrogen-containing reducing gas is introduced to those pores, the preform is heated in such manner as to provide the quartz glass with an effective amount of chemically-combined nitrogen, no less than 25 ppm. A minute amount of chemically-combined nitrogen in the high-purity quartz glass is sufficient to provide a tremendous improvement in physical properties and an incredible increase in the resistance to devitrification. In another embodiment the porous silica preform is fired in steam to increase the hydroxyl content and then nitrided in a nitrogen-hydrogen reducing atmosphere.

摘要翻译： 石英玻璃制品由具有化学键合的羟基或与氮反应的其它表面反应性基团的内部孔的烧制多孔二氧化硅体或预型体制成。 将含氮还原气体引入到这些孔中后，预热体以这样一种方式被加热，从而为石英玻璃提供有效量的不少于25ppm的化学组合氮。 高纯度石英玻璃中的少量化学结合的氮足以提供物理性能的极大改善和耐失透性的惊人增加。 在另一个实施方案中，多孔二氧化硅预制体在蒸汽中焙烧以增加羟基含量，然后在氮 - 氢还原气氛中氮化。