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1. (WO2017192533) GLASS COMPOSITIONS THAT RETAIN HIGH COMPRESSIVE STRESS AFTER POST-ION EXCHANGE HEAT TREATMENT
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Pub. No.: WO/2017/192533 International Application No.: PCT/US2017/030564
Publication Date: 09.11.2017 International Filing Date: 02.05.2017
IPC:
C03C 3/085 (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
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:
GUO, Xiaoju; US
MAURO, John Christopher; US
Agent:
HARAN, John T; US
Priority Data:
62/332,59106.05.2016US
Title (EN) GLASS COMPOSITIONS THAT RETAIN HIGH COMPRESSIVE STRESS AFTER POST-ION EXCHANGE HEAT TREATMENT
(FR) COMPOSITIONS DE VERRE CONSERVANT UNE CONTRAINTE DE COMPRESSION ÉLEVÉE APRÈS UN TRAITEMENT THERMIQUE POST-ÉCHANGE IONIQUE
Abstract:
(EN) Ion exchangeable glasses containing SiO2, Na2O, MgO, and, optionally, at least one of Li2O and ΖrΌ2. These glasses are also free of at least one of B2O3, K2O, CaO, and P2O5. These glasses may be ion-exchanged to achieve a depth of compressive layer of at least about 40 μιη or up to about 50 μιη and a maximum surface compressive stress of at least about 950 MPa, in some embodiments, at least 1000 MPa and, in other embodiments, at least about 1100 MPa. The ion-exchanged glasses, when subsequently heat-treated, have a retained compressive stress of at least about 600 MPa at the surface of the glass and, in some embodiments, at least about 750 MPa. The glasses also exhibit high levels of durability when exposed to strong acid.
(FR) L'invention concerne des verres à ions échangeables contenant du SiO2, du Na2O, du MgO et, facultativement, au moins l'un parmi Li2O et ZrO2. Ces verres sont également exempts d'au moins l'un parmi B2O3, K2O, CaO et P2O5. Ces verres peuvent être échangés avec des ions pour obtenir une profondeur de la couche de compression d'au moins environ 40 µm ou jusqu'à environ 50 µm et une contrainte de compression de surface maximale d'au moins environ 950 MPa, dans certains modes de réalisation, d'au moins 1000 MPa et, dans d'autres modes de réalisation, d'au moins environ 1100 MPa. Les verres à ions échangés, lorsqu'ils sont ensuite soumis à un traitement thermique, présentent une contrainte de compression conservée d'au moins environ 600 MPa à la surface du verre et, dans certains modes de réalisation, d'au moins environ 750 MPa. Les verres présentent également des niveaux élevés de durabilité lorsqu'ils sont soumis à l'action d'un acide fort.
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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)