Manufacturing methods can involve use of a vessel apparatus for making Li ion conducting sulfide glass by melt processing the inside the vessel apparatus, the apparatus having a liner assembly in an ampoule assembly providing an interior wall component that is chemically compatible in direct contact with the molten sulfide glass and maintains intimate thermal contact with the interior wall surface of the ampoule assembly.

A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.

A method includes contacting a glass sheet with a forming surface to form a shaped glass article. An effective viscosity of the glass sheet during the contacting step is less than a contact viscosity of the glass sheet in contact with the forming surface during the contacting step.

A tinted glass composition and glass article including the same, the composition including: about 45 mol % to about 80 mol % SiO.sub.2; about 6 mol % to about 22 mol % Al.sub.2O.sub.3; 0 mol % to about 25 mol % B.sub.2O.sub.3; about 7 mol % to about 25 mol % of at least one alkaline earth oxide selected from MgO, CaO, SrO, BaO, and combinations thereof; about 0.5 mol % to about 20 mol % CuO; 0 mol % to about 6 mol % SnO.sub.2, SnO, or a combination thereof; 0 mol % to about 1.0 mol % C; 0 mol % to about 5 mol % La.sub.2O.sub.3; and 0 mol % to about 10 mol % PbO, and that is substantially free of alkali metal.

A method includes heating a glass preform having a plurality of glass layers and drawing the glass preform in a distal direction to form a drawn glass sheet extending distally from the glass preform and having the plurality of glass layers. The drawn glass sheet is thinner than the glass preform. The drawn glass sheet can be rolled onto a collection spool. At least a portion of a glass layer can be removed from the drawn glass sheet. An exemplary glass sheet includes a first glass layer, a second glass layer adjacent to the first glass layer, and a thickness of at most about 0.1 mm. An exemplary ion exchanged glass sheet includes a thickness of at most about 0.1 mm and a surface layer that is under a compressive stress and extends into an interior of the glass sheet to a depth of layer.

Provided are: a glass substrate that achieves a high strain point while having a low devitrification temperature; and a method for producing said glass substrate. This glass substrate for a display is made of a glass comprising SiO.sub.2 and Al.sub.2O.sub.3, comprising 0% or more to less than 3% B.sub.2O.sub.3 and from 5 to 14% BaO in mass %, and substantially devoiding Sb.sub.2O.sub.3, wherein the devitrification temperature is 1235° C. or lower and the strain point is 720° C. or higher. Alternatively, this glass substrate for a display is made of a glass comprising SiO.sub.2 and Al.sub.2O.sub.3, comprising 0% or more to less than 3% B.sub.2O.sub.3, 1.8% or more MgO, and from 5 to 14% BaO in mass %, and substantially devoiding Sb.sub.2O.sub.3, wherein (SiO.sub.2+MgO+CaO)—(Al.sub.2O.sub.3+SrO+BaO) is less than 42%, the devitrification temperature is 1260° C. or lower, and the strain point is 720° C. or higher. This method for producing said glass substrate for a display comprises: a melting step for melting, by using at least direct electrical heating, a glass material prepared to have a predetermined composition; a forming step for forming, into a flat glass sheet, the molten glass that has been melted in the melting step; and an annealing step for annealing the flat glass sheet, wherein a condition for cooling the flat glass sheet is controlled so as to reduce the heat shrinkage rate of the flat glass sheet.

Apparatus can comprise a containment device including a surface defining a region extending in a flow direction of the containment device. A support member positioned to support a weight of the containment device can comprise a support material with a creep rate from 1×10.sup.−12 l/s to 1×10.sup.−14 l/s under a pressure of from 1 MPa to 5 MPa at a temperature of 1400° C. In some embodiments, the support material can comprise a ceramic material. In some embodiments, the support material can comprise silicon carbide. In some embodiments, a platinum wall can be spaced from physically contacting any portion of the support member. In some embodiments, methods can comprise flowing the molten material within the region in the flow direction while supporting a weight of the containment device with the support member.

The present tempered glass sheet includes a compression stress layer on the surface and a glass composition containing from 40 to 80 mol % of SiO.sub.2, from 6 to 25 mol % of Al.sub.2O.sub.3, from 0 to 10 mol % of B.sub.2O.sub.3, from 3 to 15 mol % of Li.sub.2O, from 1 to 21 mol % of Na.sub.2O, from 0 to 10 mol % of K.sub.2O, from 0 to 10 mol % of MgO, from 0 to 10 mol % of ZnO, from 0 to 15 mol % of P.sub.2O.sub.5, and from 0.001 to 0.30 mol % of SnO.sub.2, in which ([Li.sub.2O]+[Na.sub.2O]+[K.sub.2O])/[Al.sub.2O.sub.3] is greater than or equal to 0.86, and ([SiO.sub.2]+[B.sub.2O.sub.3]+[P.sub.2O.sub.5])/((100×[SnO.sub.2])×([Al.sub.2O.sub.3]+[Li.sub.2O]+[Na.sub.2O]+[K.sub.2O]+[MgO]+[CaO]+[SrO]+[BaO]+[ZnO])) is greater than or equal to 0.40.

A laminated glass article includes a glass core layer having a core modulus E.sub.core and a glass cladding layer adjacent to the core layer and having a cladding modulus E.sub.clad. E.sub.clad can be at least 5 GPa less than E.sub.core. A modulus ratio E.sub.core/E.sub.clad can be at least 1.08. The cladding layer can have a compressive stress resulting from a coefficient of thermal expansion (CTE) contrast between the core layer and the cladding layer and/or subjecting the laminated glass article to an ion exchange treatment to form an ion exchanged region at an outer surface of the cladding layer.

Provided is a method of manufacturing a glass sheet, which comprises a conveying step of conveying a glass sheet (G3) by holding an upper part of the glass sheet (G3) in a vertical posture. The conveying step comprises a first conveying step of conveying the glass sheet (G3) in a first direction along a direction perpendicular to a main surface of the glass sheet (G3), and a second conveying step of conveying the glass sheet (G3) in a second direction along a direction parallel to the main surface after the first conveying step. When a conveying direction of the glass sheet is changed from the first direction to the second direction, a lower part of the main surface (G3y) is supported by a roller (41) of a support portion (4) from a forward side in the conveying direction of the glass sheet (G3) conveyed in the first direction.