| 发明名称 |
Reductively produced borosilicate glass having high transmission in the UV region and good hydrolytic resistance, and the use thereof |
| 摘要 |
Reductively produced borosilicate glass having a transmission of at least 85% at a wavelength of 254 nm and a path length of 1 mm, a hydrolytic resistance of less than 100, in particular less than 62, micrograms of Na2O per g of granulated glass according to ISO 719, and a coefficient of thermal expansion alpha 20/300 of from 5 to 6 x 10<-6> K<-1>, and a composition of, in % by weight based on oxide, SiO2 58-65; B2O3 > 18-20.5; Al2O3 8.1-10.4; CaO 0-1; BaO 0-<2; SrO 0-2; Li2O 0-1.5; Na2O 5.5-8.5; K2O 0-3.0; SIGMA alkali metal oxides </= 10; SIGMA CaO + BaO + SrO </= 3; F 0-2, and an Al2O3 : Na2O molar ratio of 0.6-1. The glass is particularly suitable as UV-transparent material for Eprom windows, UV lamps, photomultipliers, spectral analysers, particularly under difficult climatic conditions, and as a protective tube for water-immersed UV lamps in effluent treatment.
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| 申请公布号 |
DE4335204(C1) |
申请公布日期 |
1995.04.06 |
| 申请号 |
DE19934335204 |
申请日期 |
1993.10.15 |
| 申请人 |
JENAER GLASWERK GMBH, 07745 JENA, DE |
发明人 |
WATZKE, ECKHART, 07749 JENA, DE;KLOSS, THOMAS, 07743 JENA, DE;BRIX, PETER, DR., 55126 MAINZ, DE;OTT, FRANZ, DR., 95666 MITTERTEICH, DE |
| 分类号 |
G01D11/26;C03C3/091;C03C3/118;C03C4/00;C03C4/10;(IPC1-7):C03C3/091 |
主分类号 |
G01D11/26 |
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