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1. WO2020205304 - SCRATCH RESISTANT GLASS AND METHOD OF MAKING

Publication Number WO/2020/205304
Publication Date 08.10.2020
International Application No. PCT/US2020/024160
International Filing Date 23.03.2020
IPC
C03C 3/091 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3Glass compositions
04containing silica
076with 40% to 90% silica by weight
089containing boron
091containing aluminium
C03C 3/093 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3Glass compositions
04containing silica
076with 40% to 90% silica by weight
089containing boron
091containing aluminium
093containing zinc or zirconium
C03C 21/00 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
21Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals into the surface
CPC
C03C 21/002
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
21Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
001in liquid phase, e.g. molten salts, solutions
002to perform ion-exchange between alkali ions
C03C 2204/00
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
2204Glasses, glazes or enamels with special properties
C03C 3/091
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3Glass compositions
04containing silica
076with 40% to 90% silica, by weight
089containing boron
091containing aluminium
C03C 3/093
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3Glass compositions
04containing silica
076with 40% to 90% silica, by weight
089containing boron
091containing aluminium
093containing zinc or zirconium
C03C 3/125
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3Glass compositions
12Silica-free oxide glass compositions
125containing aluminium as glass former
C03C 4/18
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
CCHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
4Compositions for glass with special properties
18for ion-sensitive glass
Applicants
  • CORNING INCORPORATED [US]/[US]
Inventors
  • AMIN, Jaymin
  • GUO, Xiaoju
  • ORAM, Pascale
  • ROUSSEV, Rostislav Vatchev
  • UKRAINCZYK, Ljerka
  • WILKINSON, Taylor Marie
Agents
  • JOHNSON, Kevin M.
Priority Data
62/826,30029.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SCRATCH RESISTANT GLASS AND METHOD OF MAKING
(FR) VERRE RÉSISTANT AUX RAYURES ET PROCÉDÉ DE FABRICATION
Abstract
(EN)
Glass-based articles comprise stress profiles providing improved scratch resistance. A glass-based article comprises a lithium aluminosilicate composition and a molar ratio of potassium dioxide (K2O) to sodium dioxide (Na2O) 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. The article comprises sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article and a spike depth of layer that is greater than or equal to 4 micrometers and less than or equal to 8 micrometers. The article may comprise an average compressive stress of greater than or equal to 150 MPa over a depth from 15 micrometers to 40 micrometers.
(FR)
L'invention concerne des articles à base de verre comprenant des profils de contrainte qui apportent une résistance aux rayures améliorée. Un article à base de verre comprend une composition d'aluminosilicate de lithium et un rapport molaire du dioxyde de potassium (K2O) au dioxyde de sodium (Na2O) moyenné sur une distance de la surface à une profondeur de 0,4 micromètre qui est supérieure ou égale à 0 et inférieure ou égale à 1,8. L'article comprend du sodium ayant une concentration variable non nulle qui s'étend depuis une surface de l'article à base de verre jusqu'à une profondeur de l'article à base de verre et une profondeur de pic de couche qui est supérieure ou égale à 4 micromètres et inférieure ou égale à 8 micromètres. L'article peut comprendre une contrainte de compression moyenne supérieure ou égale à 150 MPa sur une profondeur allant de 15 micromètres à 40 micromètres.
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