Corning Incorporated

Corning Research & Development Corporation

Rostislav Vatchev Roussev

Vitor Marino Schneider

Pascale Oram

Timothy Michael Gross

Xiaoju Guo

Kevin Barry Reiman

Jaymin Amin

Peter Joseph Lezzi

Ryan Claude Andrews

Charlene Marie Smith

Ljerka Ukrainczyk

Jonathan David Pesansky

Brian Paul Strines

Benedict Osobomen Egboiyi

Alexandra Lai Ching Kao Andrews Mitchell

Jason Thomas Harris

Emily Elizabeth Young

Guangli Hu

Steven Alvin Tietje

Zhongzhi Tang

Jennifer Lynn Hunt

Ross Johnson Stewart

Matthew John Dejneka

Robert Anthony Schaut

Anping Liu

Douglas Clippinger Allan

Dmitri Vladislavovich Kuksenkov

Shenping Li

Jill Marie Hall

Taylor Marie Wilkinson

Jin Su Kim

Karl William Koch, Iii

Natesan Venkataraman

Vladislav Yuryevich Golyatin

Dragan Pikula

Odessa Natalie Petzold

Petr Gorelchenko

Nathaniel David Wetmore

Trevor Edward Wilantewicz

Shelby Kerin Wilson

Delena Lucinda Justice Duffy

Kristy Lynn Smith

Lisa Marie Noni

Albert Joseph Fahey

Chai Hsin Kuang

Dana Craig Bookbinder

Adam James Ellison

Shandon Dee Hart

William James Miller

Yuhui Jin

Charles Andrew Paulson

David L Weidman

Jian Luo

Aramais Robert Zakharian

William John Furnas

Izhar Zahoor Ahmed

Bin Zhang

Lars Martin Otfried Brusberg

Babak Robert Raj

Benjamin Zain Hanson

Qiao Li

Martin Hempstead

Uta-Barbara Goers

Alana Marie Whittier

Sam Samer Zoubi

Sergey Anatol'evich Kuchinsky

Vijay Subramanian

Irene Marjorie Slater

Pierre Michel Bouzi

Jeremiah Robert Jacobson

Evan Lewis Olson

Po-Jen Shih

Glenn Abram Newcomer

Viktor Stepanov

Antons Treikalis

Ming Yang

Karl William Iii Koch

Glass-based articles comprise stress profiles providing improved fracture resistance. The stress profiles contain a high peak tension and a region with a high degree of negative curvature. The glass-based articles herein provide high fracture resistance after multiple drops.

Fracture resistant glass-based articles

A glass composition includes: from 55.0 mol % to 70.0 mol % SiO; from 12.0 mol % to 20.0 mol % AlO; from 5.0 mol % to 15.0 mol % LiO; and from 4.0 mol % to 15.0 mol % NaO. The glass composition has the following relationships −8.00 mol %≤RO+RO−AlO−BO−PO≤−1.75 mol %, 9.00≤(SiO+AlO+LiO)/NaO, and (LiO+AlO+PO)/(NaO+BO)≤3.50. The glass composition may be used in a glass article or a consumer electronic product.

Glasses with low excess modifier content

Methods and apparatus for obtaining a corrected digital mode spectrum for a chemically strengthened (CS) substrate having a curved surface are disclosed. The methods include digitally capturing transverse magnetic (TM) and transverse electric (TE) mode spectra of the CS substrate to form a digital mode spectrum image using an evanescent prism coupling system having a system calibration for measuring flat CS substrates. The method further includes establishing a calibration correction based on the difference in the digitally captured TM and TE mode spectra as compared to a reference TM and TE mode spectra for a reference CS substrate. The calibration correction is applied to the digital mode spectrum image to form the corrected digital mode spectrum image, which can be processed using the system calibration for measuring flat CS substrates to determine a refractive index profile and stress characteristics for the curved CS substrate.

Enhanced evanescent prism coupling systems and methods for characterizing stress in chemically strengthened curved parts

Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.

Fracture resistant stress profiles in glasses

A glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t) of about 3 millimeters or less (e.g., about 1 millimeter or less), and a stress profile, wherein all points of the stress profile between a thickness range from about 0·t up to 0.3·t and from greater than about 0.7·t to t, comprise a tangent with a slope having an absolute value greater than about 0.1 MPa/micrometer. In some embodiments, the glass-based article includes a non-zero metal oxide concentration that varies along at least a portion of the thickness (e.g., 0·t to about 0.3·t) and a maximum central tension of less than about 71.5/√(t) (MPa). In some embodiments, the concentration of metal oxide or alkali metal oxide decreases from the first surface to a point between the first surface and the second surface and increases from the point to the second surface. The concentration of the metal oxide may be about 0.05 mol % or greater or about 0.5 mol % or greater throughout the thickness. Methods for forming such glass-based articles are also disclosed.

Fusion-formable glass-based articles including a metal oxide concentration gradient

A glass exhibiting non-frangible behavior in a region where substantially higher central tension is possible without reaching frangibility is provided. This region allows greater extension of the depth of compression in which fracture-causing flaws are arrested, without rendering the glass frangible despite the presence of high central tension region in the sample.

Glasses having non-frangible stress profiles

A glass composition includes from 55.0 mol % to 75.0 mol % SiO; from 8.0 mol % to 20.0 mol % AlO; from 3.0 mol % to 15.0 mol % LiO; from 5.0 mol % to 15.0 mol % NaO; and less than or equal to 1.5 mol % KO. The glass composition has the following relationships: AlO+LiO is greater than 22.5 mol %, RO+RO is greater than or equal to 18.0 mol %, RO/AlOis greater than or equal to 1.06, SiO+AlO+BO+POis greater than or equal to 78.0 mol %, and (SiO+AlO+BO+PO)/LiO is greater than or equal to 8.0. The glass composition may be used in a glass article or a consumer electronic product.

Ion-exchangeable mixed alkali aluminosilicate glasses

Methods of manufacturing a glass-based article includes exposing a glass-based substrate having a lithium aluminosilicate composition to an ion exchange treatment to form the glass-based article. The ion exchange treatment including a molten salt bath having a concentration of a sodium salt in a range from 8 mol % to 100 mol %. The glass-based article includes sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article The glass-based article has compressive stress layer extending from the surface to a spike depth of layer from 4 micrometers to 8 micrometers. The glass-based article includes a molar ratio of potassium oxide (KO) to sodium oxide (NaO) averaged over a distance from the surface to a depth of 0.4 micrometers that is greater than or equal to 0 and less than or equal to 1.8.

Scratch resistant glass and method of making

Glass-based articles comprise: a lithium-based aluminosilicate composition; a glass-based substrate having opposing first and second surfaces defining a substrate thickness (t), wherein t is less than or equal to 0.74 mm; and a stress profile comprising: a spike region extending from the first surface to a tail region. A stress profile comprises: a maximum compressive stress (CS) of greater than or equal to 450 MPa; a spike region extending from the first surface to a tail region; and the tail region extending to a center of the glass-based article; wherein the tail region comprises: a region of enhanced stress having a first average compressive stress (CS) of greater than or equal to 100 MPa; and a FSM depth of layer (DOL) located at a depth of greater than or equal to 13 micrometers.

Glass-based articles with stress profiles having regions of enhanced stress

Glass-based articles comprise stress profiles providing improved fracture resistance and decreased weight gain. The glass-based articles are produced with a single-step ion exchange process.

Glass-based articles with fracture resistant stress profiles

Glass-based articles are provided that exhibit improved fracture resistance. The relationships between properties attributable to the glass composition and stress profile of the glass-based articles are provided that indicate improved fracture resistance.

Glass-based articles with improved fracture resistance

A strengthened glass having a stress profile that differs from error-function and parabolic profiles. Stress relaxation and thermal annealing/diffusion effects, which occur at longer ion exchange and/or anneal times increase the depth of compression of the surface layer. A method of achieving these effects is also provided.

S-shaped stress profiles and methods of making

A laminated glass article comprises a core layer comprising a core glass composition, and a cladding layer directly adjacent to the core layer and comprising a clad glass composition. A stress of the cladding layer increases with increasing distance from an outer surface of the cladding layer from a compressive stress to a tensile stress, transitions to a compressive stress as a step-change at an interface region between the core layer and the cladding layer, and increases with increasing distance from the interface region to a center of the core layer from the compressive stress to a tensile stress.

Glass laminate with buried stress spikes to arrest cracks and methods of making the same

Glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t), and a stress profile are disclosed having a thickness (t) of about 3 millimeters or less, and wherein all points of the stress profile between a thickness range from about 0·t up to 0.3·t and from greater than 0.7·t, comprise a tangent with a slope that is less than about −0.1 MPa/micrometers or greater than about 0.1 MPa/micrometers. Also disclosed are glass-based articles having a thickness (t) in a range of 0.1 mm and 2 mm; and wherein at least one point of the stress profile in a first thickness range from about 0·t up to 0.020·t and greater than 0.98·t comprises a tangent with a slope of from about −200 MPa/micrometer to about −25 MPa/micrometer or about 25 MPa/micrometer to about 200 MPa/micrometer, and wherein all points of the stress profile in a second thickness range from about 0.035·t and less than 0.965·t comprise a tangent with a slope of from about −15 MPa/micrometer to about 15 MPa/micrometer.

Glass-based articles including a stress profile comprising two regions

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Painted Post, NY, United States of America

Rostislav Vatchev Roussev