| 摘要 |
<p>The invention relates to a composition of silico soda-lime glass for the production of glazing, comprising the following coloring agents expressed in weight per cent: Fe2O3 (total iron) 0.2 0.45 %, Se 2 - 8 ppm, CoO 0 - 20 ppm, NiO 0 - 80 ppm said agents corresponding to the following ratio: 0,7 < (200 x NiO) + (5000 x Se) + (6 x Fe3+) / (875 x CoO) + (24 x Fe2+) < 1.6 wherein the NiO, Se, Fe3+, CoO and Fe2+ content is expressed in ppm, Fe3+ being the ferric iron content expressed in the form of Fe2O3 and Fe2+ being the ferric iron content expressed in the form of FeO, said composition having a redox which varies from 0.28 to 0.5, an overall luminous transmission value under illuminant A (TLA) of more than 65 % and a selectivity (SE) of more than 1.25, measured for a thickness of 3.85 mm. The invention also relates to glazing formed from at least one sheet of glass produced from the above-mentioned composition.</p> |
