Abstract: Glass compositions that may be used to produce chemically strengthened glass sheets by ion exchange. The glass compositions are chosen to promote simultaneously high compressive stress and deep depth of layer or, alternatively, to reduce the time needed to ion exchange the glass to produce a predetermined compressive stress and depth of layer.

Abstract: Glass compositions and glass articles comprising the glass compositions are disclosed. In one embodiment, a glass composition includes from about 65 mol. % to about 70 mol. % SiO2; from about 9 mol. % to about 14 mol. % Al2O3; and from about 0 mol. % to about 11 mol. % B2O3 as glass network formers. The glass composition also includes from about 5 mol. % to less than 10 mol. % alkali oxide R2O, wherein R is at least one of Li, Na, and K. The glass composition also includes from about 3 mol. % to about 11 mol. % of divalent oxide MO, wherein M is at least one of Mg, Ca, Ba, SrO and Zn. The glass composition has a coefficient of thermal expansion which is less than or equal to 55×10-7/° C. and is amenable to strengthening by ion-exchange. The glass composition is well suited for use as the glass cladding layers of a laminated glass article.

Abstract: Glass compositions that may be used to produce chemically strengthened glass sheets by ion exchange. The glass compositions are chosen to promote simultaneously high compressive stress and deep depth of layer or, alternatively, to reduce the time needed to ion exchange the glass to produce a predetermined compressive stress and depth of layer.

Abstract: Glass compositions that may be used to produce chemically strengthened glass sheets by ion exchange. The glass compositions are chosen to promote simultaneously high compressive stress and deep depth of layer or, alternatively, to reduce the time needed to ion exchange the glass to produce a predetermined compressive stress and depth of layer.

Abstract: Opal glass compositions and glass articles comprising the same are disclosed. In one embodiment, a glass composition includes 55 mol. % to 70 mol. % SiO2 and 9 mol. % to 15 mol. % Al2O3 as glass network formers. The glass composition also includes 10 mol. % to 15 mol. % alkali oxide M2O, wherein M is at least one of Na and K. The glass composition also includes 2 mol. % to 8 mol. % divalent oxide RO, wherein R is at least one of Zn, Ca, and Mg. As an opalizing agent, the glass composition may also include 8.5 mol. % to 16 mol. % F?. The glass composition may also include 0 mol. % to 0.3 mol. % SnO2 as a fining agent and from about 0 mol. % to about 6 mol. % of colorant. The glass composition is free from As and compounds containing As.

Abstract: Described herein are various glass compositions, glass articles, and information storage devices that comprise the glass articles as substrates therefor, along with methods for their manufacture and use.

Abstract: Methods are disclosed for producing chemically-strengthened, borosilicate, glass articles. The articles are produced from batch components which are selected, at least in part, based on measured and/or estimated values for the coordination state of B2O3 in the glass. In this way, such chemical-strengthening properties as mutual diffusivity, maximum surface compressive stress, and/or indentation threshold can be improved.

Abstract: Ion exchangeable glasses that comprise at least one of a transition metal oxide or a rare earth oxide and have compositions that simultaneously promote a surface layer having a high compressive stress and deep depth of layer or, alternatively, reduced ion exchange time.

Abstract: Glass compositions and glass articles comprising the glass compositions are disclosed. In one embodiment, a glass composition includes from about 65 mol. % to about 70 mol. % SiO2; from about 9 mol. % to about 14 mol. % Al2O3; and from about 0 mol. % to about 11 mol. % B2O3 as glass network formers. The glass composition also includes from about 5 mol. % to less than 10 mol. % alkali oxide R2O, wherein R is at least one of Li, Na, and K. The glass composition also includes from about 3 mol. % to about 11 mol. % of divalent oxide MO, wherein M is at least one of Mg, Ca, Ba, SrO and Zn. The glass composition has a coefficient of thermal expansion which is less than or equal to 55×10-7/° C. and is amenable to strengthening by ion-exchange. The glass composition is well suited for use as the glass cladding layers of a laminated glass article.

Abstract: Opal glass compositions and glass articles comprising the same are disclosed. In one embodiment, a glass composition includes 55 mol. % to 70 mol. % SiO2 and 9 mol. % to 15 mol. % Al2O3 as glass network formers. The glass composition also includes 10 mol. % to 15 mol. % alkali oxide M2O, wherein M is at least one of Na and K. The glass composition also includes 2 mol. % to 8 mol. % divalent oxide RO, wherein R is at least one of Zn, Ca, and Mg. As an opalizing agent, the glass composition may also include 8.5 mol. % to 16 mol. % F?. The glass composition may also include 0 mol. % to 0.3 mol. % SnO2 as a fining agent and from about 0 mol. % to about 6 mol. % of colorant. The glass composition is free from As and compounds containing As.

Abstract: Described herein are various glass compositions, glass articles, and information storage devices that comprise the glass articles as substrates therefor, along with methods for their manufacture and use.

Abstract: Glass compositions having properties that are optimized for forming ultra-thin (<0.4 mm) articles and for applications requiring ultra-thin glass. These properties include both forming-related properties such as the coefficients of thermal expansion (CTE) of both the liquid and glassy state of the glass, liquidus viscosity, and those properties affecting the mechanical performance of the glass (compressive stress, depth of layer, elastic or Young's modulus).

Abstract: Glass compositions that may be used to produce chemically strengthened glass sheets by ion exchange. The glass compositions are chosen to promote simultaneously high compressive stress and deep depth of layer or, alternatively, to reduce the time needed to ion exchange the glass to produce a predetermined compressive stress and depth of layer.

Abstract: The present invention relates to a silicate glass article, such as a glass container, with a modified surface region. The modified surface has, among other advantageous properties, an improved chemical durability, an increased hardness, and/or an increased thermal stability, such as thermal shock resistance. In particular the present invention relates to a process for modifying a surface region of a silicate glass article by heat-treatment at Tg in a reducing gas atmosphere such as H2/N2 (1/99). The concentration of network-modifying cations (NMC) in the surface region of the silicate glass article is lower than in the bulk part, and the composition in the surface region of the network-modifying cations is a consequence of an inward diffusion.