Corning Incorporated

John Philip Finkeldey

Charlene Marie Smith

George Halsey Beall

Timothy Michael Gross

Peter Joseph Lezzi

Kevin Lee Wasson

Richard Orr Maschmeyer

John Christopher Thomas

Linda Gaskill

Steven Alvin Tietje

Jingshi Wu

Alexandra Lai Ching Kao Andrews Mitchell

Alexandra Mitchell

Disclosed herein is glass-ceramic and glass-ceramic articles including a crystalline phase comprising a jeffbenite crystalline structure, glass that may be cerammed to become such, and methods of making and using the same.

Precursor glasses and glass-ceramics comprising a crystalline phase having a jeffbenite crystalline structure

Disclosed herein are glass-ceramic articles including a crystalline phase comprising a jeffbenite crystalline structure. The glass-ceramic articles may include a first surface, a second surface opposite the first surface, and a perimeter defining a shape of the glass-ceramic article. The glass-ceramic articles may further include a phase assemblage comprising one or more crystalline phases and a glass phase. The one or more crystalline phases may include a crystalline phase having the jeffbenite crystalline structure.

A glass composition includes greater than or equal to 45 mol % to less than or equal to 60 mol % SiO; greater than or equal to 15 mol % to less than or equal to 25 mol % AlO; greater than or equal to 10 mol % to less than or equal to 20 mol % LiO; greater than or equal to 0 mol % to less than or equal to 7.5 mol % NaO; greater than or equal to 0 mol % to less than or equal to 5 mol % KO; greater than or equal to 7 mol % to less than or equal to 13 mol % PO, and greater than or equal to 0 mol % to less than or equal to 4 mol % TiO. The glass composition may have a liquidus temperature of less than or equal to 1300° C. and an inter-diffusion coefficient greater than or equal to 4000 μm/hour. The glass composition is chemically strengthenable. The glass composition may be used in a glass-based article or a consumer electronic product.

Lithium phosphoalumino silicate glasses with fast effective inter-diffusivity

Glass compositions include one or more of silica (SiO), magnesia (MgO) and alumina (AlO) as essential components and may optionally include sodium oxide (NaO), potassium oxide (KO), zirconia (ZrO), titania (TiO), zinc oxide (ZnO), manganese oxide (MnO), hafnium oxide (HfO) and other components. The glasses may be characterized by low density at room temperature.

Glasses and glass-ceramics, and method of making the same

A glass-ceramic comprising, in weight percent on an oxide basis, of 50 to 70% SiO, 0 to 20% AlO, 12 to 23% MgO, 0 to 4% LiO, 0 to 10% NaO, 0 to 10% KO, 0 to 5% ZrO, and 2 to 12% F, wherein the predominant crystalline phase of said glass-ceramic is a trisilicic mica, a tetrasilicic mica, or a mica solid solution between trisilicic and tetrasilicic, and wherein the total of NaO+LiO is at least 2 wt. %; wherein the glass-ceramic can be ion-exchanged.

Chemically strengthenable machinable glass-ceramics

Embodiments of thermally and chemically strengthened glass-based articles are disclosed. In one or more embodiments, the glass-based articles may include a first surface and a second surface opposing the first surface defining a thickness (t), a first CS region comprising a concentration of a metal oxide that is both non-zero and varies along a portion of the thickness, and a second CS region being substantially free of the metal oxide of the first CS region, the second CS region extending from the first surface to a depth of compression of about 0.17&#x2022;t or greater. In one or more embodiments, the first surface is flat to 100 &#x3bc;m total indicator run-out (TIR) along any 50 mm or less profile of the first surface. Methods of strengthening glass sheets are also disclosed, along with consumer electronic products, laminates and vehicles including the same are also disclosed.

Thin thermally and chemically strengthened glass-based articles

A glass substrate formed from a glass composition is disclosed. In embodiments, the composition comprises: from 60 mol. % to 75 mol. % SiO; from 2 mol. % to 15 mol. % LiO; from 1.9 mol. % to 15 mol. % YO; and at least one of BOand NaO. BO+NaO is from 2 mol. % to 13 mol. %. YO+AlOis from 10 mol. % to 24 mol. %. A ratio RO/AlOis from 0.5 to 4, where RO is a total concentration of LiO, NaO, KO, RbO, and CsO. (RO+RO)/AlOis from 0.5 to 4.5, where RO is a total concentration of BeO, MgO, CaO, SrO, and BaO. The glass substrate has a Young's modulus from 75 gigapascals (GPa) to 110 GPa. The glass substrate is ion exchangeable to form a strengthened glass article.

YO-containing glass compositions, substrates, and articles

A glass-ceramic article includes 50 mol. % to 80 mol. % SiO; 10 mol. % to 25 mol. % AlO; 5 mol. % to 20 mol. % MgO; 0 mol. % to 10 mol. % LiO; and 1 mol. % to 3 mol. % of a nucleating agent. The nucleating agent is selected from the group consisting of ZrO, TiO, SnO, HfO, TaO, NbO, YO, and combinations thereof. The nucleating agent may comprise greater than or equal to 50% ZrOand less than 50% of at least one compound selected from the group consisting of TiO, SnO, HfO, TaO, NbO, YO, and combinations thereof. The glass-ceramic article may have a molar ratio of MgO to LiO of greater than or equal to 1:1. The glass-ceramic article may satisfy the relationship 0.85&#x2264;(MgO (mol %)+LiO (mol %))/AlO(mol %)&#x2264;1.2. The glass-ceramic article may comprise a crystalline phase comprising hexagonal stuffed &#x3b2;-quartz and glass.

Transparent hexagonal stuffed &#x3b2;-quartz glass-ceramic articles having large grain size

A transparent gahnite-spinel glass ceramic is provided. The glass ceramic includes a first crystal phase including (MgZn)AlOwhere x is less than 1 and a second crystal phase including tetragonal ZrO. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.

Ion exchangeable, transparent gahnite-spinel glass ceramics with high hardness and modulus

Embodiments of thermally and chemically strengthened glass-based articles are disclosed. In one or more embodiments, the glass-based articles may include a first surface and a second surface opposing the first surface defining a thickness (t), a first CS region comprising a concentration of a metal oxide that is both non-zero and varies along a portion of the thickness, and a second CS region being substantially free of the metal oxide of the first CS region, the second CS region extending from the first surface to a depth of compression of about 0.17&#xb7;t or greater. In one or more embodiments, the first surface is flat to 100 &#x3bc;m total indicator run-out (TIR) along any 50 mm or less profile of the first surface. Methods of strengthening glass sheets are also disclosed, along with consumer electronic products, laminates and vehicles including the same are also disclosed.

Growing community of inventors

Elkland, PA, United States of America

John Philip Finkeldey