Corning Incorporated

Morten Mattrup Smedskjaer

Matthew John Dejneka

Xiaoju Guo

John Christopher Mauro

Marcel Potuzak

Natesan Venkataraman

Robert Anthony Schaut

Sinue Gomez

Timothy James Kiczenski

Randall Eugene Youngman

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.

Aluminosilicate glasses for ion exchange

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. % AlO; and from about 0 mol. % to about 11 mol. % BOas glass network formers. The glass composition also includes from about 5 mol. % to less than 10 mol. % alkali oxide RO, 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&#xd7;10-/&#xb0; 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.

Low CTE, ion-exchangeable glass compositions and glass articles comprising the same

Opal glass compositions and glass articles comprising the same are disclosed. In one embodiment, a glass composition includes 55 mol. % to 70 mol. % SiOand 9 mol. % to 15 mol. % AlOas glass network formers. The glass composition also includes 10 mol. % to 15 mol. % alkali oxide MO, 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. % SnOas 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.

High CTE opal glass compositions and glass articles comprising the same

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.

Down-drawable chemically strengthened glass for information storage devices

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 BOin the glass. In this way, such chemical-strengthening properties as mutual diffusivity, maximum surface compressive stress, and/or indentation threshold can be improved.

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Aalborg, Denmark

Morten Mattrup Smedskjaer