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Title:
FUSION FORMED AND ION EXCHANGED GLASS-CERAMICS
Document Type and Number:
WIPO Patent Application WO/2012/075068
Kind Code:
A3
Abstract:
The present disclosure relates to fusion formable highly crystalline glass-ceramic articles whose composition lies within the SiO2--R2O3--Li2O/Na2O--TiO2 system and which contain a silicate crystalline phase comprised of lithium aluminosilicate (β-spodumene and/or β-quartz solid solution) lithium metasilicate and/or lithium disilicate. Additionally, these silicate-crystal containing glass-ceramics can exhibit varying Na2O to Li2O molar ratio extending from the surface to the bulk of the glass article, particularly a decreasing Li2O concentration and an increasing Na2O concentration from surface to bulk. According to a second embodiment, disclosed herein is a method for forming a silicate crystalline phase-containing glass ceramic.

Inventors:
BEALL GEORGE HALSEY (US)
BORRELLI NICHOLAS FRANCIS (US)
SMITH CHARLENE MARIE (US)
TIETJE STEVEN ALVIN (US)
Application Number:
PCT/US2011/062515
Publication Date:
July 19, 2012
Filing Date:
November 30, 2011
Export Citation:
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Assignee:
CORNING INC (US)
BEALL GEORGE HALSEY (US)
BORRELLI NICHOLAS FRANCIS (US)
SMITH CHARLENE MARIE (US)
TIETJE STEVEN ALVIN (US)
International Classes:
C03C3/093; C03C3/083; C03C3/085; C03C3/091; C03C10/00; C03C21/00
Foreign References:
US4755488A1988-07-05
FR2132269A11972-11-17
US20090162608A12009-06-25
US3282770A1966-11-01
US4059454A1977-11-22
US4042403A1977-08-16
US3812689A1974-05-28
Attorney, Agent or Firm:
SCHAEBERLE, Timothy M. (Intellectual Property DepartmentSP-Ti-03-0, Corning New York, US)
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