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1. (WO2017205605) FRACTURE AND SCRATCH RESISTANT GLASS ARTICLES
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Pub. No.: WO/2017/205605 International Application No.: PCT/US2017/034442
Publication Date: 30.11.2017 International Filing Date: 25.05.2017
IPC:
C03C 3/085 (2006.01) ,C03C 3/097 (2006.01) ,C03C 21/00 (2006.01)
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3
Glass compositions
04
containing silica
076
with 40% to 90% silica by weight
083
containing aluminium oxide or an iron compound
085
containing an oxide of a divalent metal
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
3
Glass compositions
04
containing silica
076
with 40% to 90% silica by weight
097
containing phosphorus, niobium or tantalum
C CHEMISTRY; METALLURGY
03
GLASS; MINERAL OR SLAG WOOL
C
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
21
Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals into the surface
Applicants:
CORNING INCORPORATED [US/US]; 1 Riverfront Plaza Corning, New York 14831, US
Inventors:
GROSS, Timothy Michael; US
SMITH, Charlene Marie; US
Agent:
SCHMIDT, Jeffrey A; US
Priority Data:
62/342,55827.05.2016US
62/358,37905.07.2016US
Title (EN) FRACTURE AND SCRATCH RESISTANT GLASS ARTICLES
(FR) ARTICLES EN VERRE RÉSISTANT AUX FRACTURES ET AUX ÉRAFLURES
Abstract:
(EN) Embodiments of glass compositions, glass articles and chemically strengthened glass articles are disclosed. In one or moe embodiments, the glass composition comprises Li2O, greater than about 0.9 mol% B2O3, Al2O3 in an amount greater than or equal to 10 mol%, and from about 60 mol% to about 80 mol% SiO2. Embodiments of the chemically strengthened glass article include a first major surface and an opposing second major surface defining a thickness t, a compressive stress layer extending from the first major surface to a depth of compression greater than about 0.12t, a maximum compressive stress of about 200 MPa or greater, and a Knoop Lateral Cracking Scratch Threshold greater than about 6 N, as measured on either one of the first major surface and the second major surface. Methods for forming such chemically strengthend glass articles are also disclosed.
(FR) L’invention concerne, selon des modes de réalisation, des compositions de verre, des articles en verre et des articles en verre chimiquement renforcé. Selon un ou plusieurs modes de réalisation, la composition de verre comprend du Li2O, du B2O3 en une quantité environ supérieure à 0,9 % en mole, de l’Al2O3 en une quantité supérieure ou égale à 10 % en moles, et d'environ 60 % en moles à environ 80 % en moles de SiO2. Des modes de réalisation de l'article en verre chimiquement renforcé comprennent une première surface principale et une seconde surface principale opposée définissant une épaisseur (t), une couche de contrainte de compression s'étendant de la première surface principale à une profondeur de compression supérieure à environ 0,12 t, une contrainte de compression maximale supérieure ou égale à environ 200 MPa, et un seuil de rayure de fissuration latérale de Knoop supérieur à environ 6 N, tel que mesuré sur l'une ou l'autre de la première surface principale et de la seconde surface principale. La présente invention concerne également des procédés de formation de ces articles en verre chimiquement renforcé.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)