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1. 发明申请

US20120006059A1 ALUMINA ISOPIPES FOR USE WITH TIN-CONTAINING GLASSES 有权
标题翻译：与含有玻璃的玻璃一起使用的铝材料
公开(公告)号：US20120006059A1
公开(公告)日：2012-01-12
申请号：US13112302
申请日：2011-05-20
申请人： Matthew J. Dejneka , Benjamin Z. Hanson , Thomas D. Ketcham
发明人： Matthew J. Dejneka , Benjamin Z. Hanson , Thomas D. Ketcham
IPC分类号： C03B17/06 , B32B17/00 , B32B18/00 , C03B21/02 , B32B5/00
摘要： Isopipes (13) for making glass sheets using a fusion process are provided. The isopipes are made from alumina materials which have low levels of the elements of group IVB of the periodic chart, i.e., Ti, Zr, and Hf, as well as low levels of Sn. In this way, the alumina isopipes can be used with glasses that contain tin (e.g., as a fining agent or as the result of the use of tin electrodes for electrical heating of molten glass) without generating unacceptable levels of tin-containing defects in the glass sheets, specifically, at the sheets' fusion lines. The alumina isopipes disclosed herein are especially beneficial when used with tin-containing glasses that exhibit low tin solubility, e.g., glasses that have (RO+R2O)/Al2O3 ratios between 0.9 and 1.1, where, in mole percent on an oxide basis, (RO+R2O) is the sum of the concentrations of the glass' alkaline earth and alkali metal oxides and Al2O3 is the glass' alumina concentration.
摘要翻译：提供了使用熔融法制造玻璃板的等离子管（13）。等压管由氧化铝材料制成，其具有低水平的周期图IVB族元素，即Ti，Zr和Hf，以及低水平的Sn。以这种方式，氧化铝等压槽可以与含有锡的玻璃一起使用（例如，作为澄清剂或由于使用锡电极用于熔融玻璃的电加热）而不产生不可接受的含锡缺陷水平玻璃片，具体地，在片材的熔合线上。当与具有低锡溶解度的含锡玻璃一起使用时，本文公开的氧化铝等压管是特别有用的，例如，具有（RO + R 2 O）/ Al 2 O 3比率在0.9和1.1之间的玻璃，其中以氧化物为基准的摩尔百分比（ RO + R2O）是玻璃的碱土金属和碱金属氧化物的浓度之和，Al2O3是玻璃的氧化铝浓度。

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