초록 ▼

The invention relates to an aluminoborosilicate glass devoid of alkali, which has the following composition (in wt. % relative to the oxide content): SiO2>58-70; B2O3 0.5-<9; Al2O3 10-25; MgO>8-15; CaO 0-<10; SrO 0-<3; BaO 0-<2; with MgO+CaO+SrO+BaO>8-18; ZnO 0-&#x

The invention relates to an aluminoborosilicate glass devoid of alkali, which has the following composition (in wt. % relative to the oxide content): SiO2>58-70; B2O3 0.5-<9; Al2O3 10-25; MgO>8-15; CaO 0-<10; SrO 0-<3; BaO 0-<2; with MgO+CaO+SrO+BaO>8-18; ZnO 0-<2. Said glass is eminently suitable for use as substrate glass, both in display technology and in thin-film photovoltaic technology.

대표청구항 ▼

The invention claimed is: 1. An alkali metal-free aluminoborosilicate glass which has a value of E>85 GPa, and the following composition (in % by weight, based on oxide): Si02 >58-70  B203 0.5-5   Al203 10-25 MgO >8-15 CaO  2-&#

The invention claimed is: 1. An alkali metal-free aluminoborosilicate glass which has a value of E>85 GPa, and the following composition (in % by weight, based on oxide): Si02 >58-70  B203 0.5-5   Al203 10-25 MgO >8-15 CaO  2-<6 SrO 0-1 BaO  0-<2 with MgO + CaO + SrO + BaO >10-18  ZnO  0-<2 TiO2 0-2, and a wt. ratio of MgO/B2O3 >1.6. 2. The aluminoborosilicate glass according to claim 1, having the following composition (in % by weight, based on oxide): Si02 >58-68  B203 0.5-5   Al203 14-24 MgO >8-15 CaO −2-<6 SrO 0-1 BaO  0-<2 with MgO + CaO + SrO + BaO >10-18  ZnO  0-<2 TiO2  0-2. 3. The aluminoborosilicate glass according to claim 1, comprising 0 to 0.5% by weight of BaO. 4. The aluminoborosilicate glass according to claim 1, comprising 0 to 0.5% by weight of SrO. 5. The aluminoborosilicate glass according to claim 1, further comprising: Zr02 0-2   with Zr02 + Ti02 0-2   As203 0-1.5 Sb203 0-1.5 Sn02 0-1.5 Ce02 0-1.5 Cl− 0-1.5 F− 0-1.5 SO42− 0-1.5 with As203 + Sb203 + Sn02 + Ce02 + Cl− + F− + S042−  <-1.5. 6. The aluminoborosilicate glass according to claim 1, having a coefficient of thermal expansion α20/300 of between 2.8·10−6/K and 3.9·10−6/K, a glass transition temperature Tg of >710° C., a density p of <2.55 g/cm3 and an “acid resistance HCl” of <0.5 mg/cm2. 7. In a display having a glass substrate, the improvement wherein the glass is an aluminoborosilicate glass according to claim 1. 8. In a thin-film photovoltaic having a glass substrate, the improvement wherein the glass is an aluminoborosilicate glass according to claim 1. 9. In a hard disk having a glass substrate, the improvement wherein the glass is an aluminoborosilicate glass according to claim 1. 10. The aluminoborosilicate glass according to claim 4, comprising 0% SrO. 11. The aluminoborosilicate glass according to claim 1, comprising >10-15% MgO. 12. The aluminoborosilicate glass according to claim 1, comprising 9-15% MgO. 13. The aluminoborosilicate glass according to claim 1, having a value of E 85-91 GPa. 14. The aluminoborosilicate glass according to claim 1, having a value of E >85-91 Gpa.