Alkali-free glass

• Main Authors: TOKUNAGA HIROFUMI, ONO KAZUTAKA
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2024
• Subjects: ANTENNAS, i.e. RADIO AERIALS; APPARATUS SPECIALLY ADAPTED THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; CINEMATOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRICITY; ELECTROGRAPHY; FREQUENCY-CHANGING; GLASS; HOLOGRAPHY; JOINING GLASS TO GLASS OR OTHER MATERIALS; MATERIALS THEREFOR; METALLURGY; MINERAL OR SLAG WOOL; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORIGINALS THEREFOR; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention relates to an alkali-free glass containing, in mol% on the basis of oxides, 63% to 69% of SiO2, 8% to 13% of Al2O3, 0.5% to 4% of B2O3, 8% to 15% of MgO, 4% to 12% of CaO, 0 to 4.5% of SrO, and 0 to 1% of BaO, with [MgO]/[CaO] being 0.67 to 3.75, the value of formula (A) being 84 or more, the value of formula (B) being 715 or less, the value of formula (C) being 200 or less, and the value of formula (D) being 15 or less. 本发明涉及一种无碱玻璃，其中，以氧化物基准的摩尔％计，所述无碱玻璃包含63％～69％的SiO2、8％～13％的Al2O3、0.5％～4％的B2O3、8％～15％的MgO、4％～12％的CaO、0～4.5％的SrO、和0～1％的BaO，并且[MgO]/[CaO]为0.67～3.75，式(A)的值为84以上，式(B)的值为715以下，式(C)的值为200以下，式(D)的值为15以下。