Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-17 Al2O3; 5-13 Li2O; 0-4 ZnO; 0-8 MgO; 2-5 TiO2; 0-4 B2O3; 0-5 Na2O; 0-4 K2O; 0-2 ZrO2; 0-7 P2O5; 0-0.3 Fe2O3; 0-2 MnOx; and 0.05-0.2 SnO2. Additionally, these glasses and glass-ceramics exhibit the following criteria: a. a ratio: [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + ZnO ] [ Al 2 ? O 3 + B 2 ? O 3 ] between 0.7 to 1.5; b. a ? ? ratio ? : ? [ TiO 2 + SnO 2 ] [ SiO 2 + B 2 ? O 3 ] greater than 0.04. Furthermore, the glass-ceramics exhibit an opacity ?about 85% over the wavelength range of 400-700 nm for an about 0.

Abstract: According to one embodiment, a glass article may include SiO2, Al2O3, Li2O and Na2O. The glass article may have a softening point less than or equal to about 810° C. The glass article may also have a high temperature CTE less than or equal to about 27×10?6/° C. The glass article may also be ion exchangeable such that the glass has a compressive stress greater than or equal to about 600 MPa and a depth of layer greater than or equal to about 25 ?m after ion exchange in a salt bath comprising KNO3 at a temperature in a range from about 390° C. to about 450° C. for less than or equal to approximately 15 hours.

Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-17 Al2O3; 5-13 Li2O; 0-4 ZnO; 0-8 MgO; 2-5 TiO2; 0-4 B2O3; 0-5 Na2O; 0-4 K2O; 0-2 ZrO2; 0-7 P2O5; 0-0.3 Fe2O3; 0-2 MnOx; and 0.05-0.2 SnO2. Additionally, these glasses and glass-ceramics exhibit the following criteria: a. a ratio: [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + ZnO _ ] ? [ Al 2 ? O 3 + B 2 ? O 3 ] between 0.7 to 1.5; b. a ratio: [ TiO 2 + SnO 2 _ ] ? [ SiO 2 + B 2 ? O 3 ] greater than 0.04. Furthermore, the glass-ceramics exhibit an opacity?about 85% over the wavelength range of 400-700 nm for an about 0.

Abstract: Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit ?-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO2; 10.5-17 Al2O3; 5-13 Li2O; 0-4 ZnO; 0-8 MgO; 2-5 TiO2; 0-4 B2O3; 0-5 Na2O; 0-4 K2O; 0-2 ZrO2; 0-7 P2O5; 0-0.3 Fe2O3; 0-2 MnOx; and 0.05-0.2 SnO2. Additionally, these glasses and glass-ceramics exhibit the following criteria: a. a ratio: [ Li 2 ? O + Na 2 ? O + K 2 ? O + MgO + ZnO ] [ Al 2 ? O 3 + B 2 ? O 3 ] ?between 0.7 to 1.5; b. a ratio: [ TiO 2 + SnO 2 ] [ SiO 2 + B 2 ? O 3 ] ?greater than 0.04. Furthermore, the glass-ceramics exhibit an opacity ?about 85% over the wavelength range of 400-700 nm for an about 0.

Abstract: ?-quartz glass-ceramics, the composition of which is most particularly optimized, with reference to the refining of their precursor glasses, with reference to good resistance to devitrification of said precursor glasses and with reference to their resistance to temperature ageing, articles comprising such glass-ceramics, lithium alumino-silicate glasses, which are precursors of such glass-ceramics, as well as methods for preparing such glass-ceramics and articles.

Abstract: Described herein are glass ceramic compositions with bulk scattering properties that have improved light extraction properties due to high levels of diffuse transmission, and methods of making such glass ceramic compositions. The compositions are based on Li2O—Al2O3—SiO2 glass ceramics and with the proper crystal size, exhibit good volume scattering characteristic for visible light and enhance the outcoupling from the substrate to the air in optical devices, such as light emitting diodes.

Abstract: Transparent, essentially colorless ?-quartz glass-ceramic materials, the composition of which is free of As2O3 and of Sb2O3, where said composition contains a specific combination of three nucleating agents: TiO2, ZrO2 and SnO2; TiO2 being present in low quantity.

Abstract: Transparent ?-quartz glass-ceramics containing vanadium oxide. Such glass-ceramics have advantageous optical properties including good transmission in the infrared range, low transmission in the visible range, and significant transmission in the blue range for thicknesses of 3 mm. They can be used as materials for cooking top plates.

Abstract: A transparent glass-ceramic materials contains a spinel solid solution as the main crystalline phase and is free of As2O3 and Sb2O3. Corresponding precursor alumino-silicate glasses, articles made of said transparent glass-ceramic materials as well as a method for manufacturing such articles, and structures comprising a sheet made of such glass-ceramic materials and electronic or optoelectronic devices comprising such structures are also disclosed. Some materials disclosed can be used as substrates for high temperature growth of high quality monocrystalline or polycrystalline silicon thin films. Structures including such substrates with such thin films thereon can be used in photovoltaic devices, flat panel devices and liquid crystal devices.

Abstract: The invention relates to a transparent and essentially colorless ?-quartz glass-ceramic material which is free of TiO2, As2O3, Sb2O3 and phosphates; articles formed from said glass-ceramic material; lithium aluminosilicate glasses, precursors for said glass-ceramic material; and methods of producing said glass-ceramic material and said articles formed from said glass-ceramic material.

Abstract: Mineral materials selected from lithium aluminosilicate glasses containing vanadium, precursors of glass-ceramics, and glass-ceramics colored by vanadium contain solid solution(s) of ?-quartz and/or ?-spodumene as main crystalline phase. Also disclosed are articles made from said mineral materials, as well as methods for forming said glasses, glass-ceramics and articles of said glasses and glass-ceramics. Methods involve optimizing the refining of lithium aluminosilicate glasses containing SnO2 as a fining agent in preparing glasses or glass-ceramics.

Abstract: Glass ceramics with bulk scattering properties and the use of those glass ceramics, for example, in OLED or photovoltaic applications.

Abstract: Transparent ?-quartz glass-ceramics containing vanadium oxide. Such glass-ceramics have advantageous optical properties including good transmission in the infrared range, low transmission in the visible range, and significant transmission in the blue range for thicknesses of 3 mm. They can be used as materials for cooking top plates.

Abstract: The invention mainly relates to a transparent, essentially colorless/??-quartz glass-ceramic material, the composition of which is free of As2O3 and of Sb2O3 and contains a specific combination of three nucleating agents: TiO2, ZrO2 and SnO2; TiO2 being present in low quantity.

Abstract: The invention relates to a transparent and essentially colorless ?-quartz glass-ceramic material which is free of TiO2, As2O3, Sb2O3 and phosphates; articles formed from said glass-ceramic material; lithium aluminosilicate glasses, precursors for said glass-ceramic material; and methods of producing said glass-ceramic material and said articles formed from said glass-ceramic material.

Abstract: The present invention relates to glass-ceramic materials, processes for making the same and articles comprising the same. The glass-ceramic material has a composition, by weight of the total composition, comprising 55-68% SiO2; 18-24% Al2O3; 3.3-4.1% Li2O; 1.5-4.0% ZnO; 1.5-5.0% MgO; 2-5% TiO2; 0-2% ZrO2; 0-5% B2O3; 0-8% P2O5; 0-2% Na2O, 0-2% K2O; and at least one component resulting from an effective amount of at least one fining agent; wherein: the total of B2O3 and P2O5 is at least 1.5% by weight, the total of MgO and ZnO is at least about 3.5% by weight, the total of Na2O and K2O is less than about 3.0% by weight, the total of P2O5, B2O3, Na2O and K2O is less than about 11% by weight, the weight ratio of the sum total of Na2O+K2O to the sum total of P2O5+B2O3 ( Na 2 ? O + K 2 ? O B 2 ? O 3 + P 2 ? O 5 ) is less than about 0.

Abstract: The present application discloses: (i) novel glass-ceramic materials containing a solid solution of b-quartz or of ?-spodumene as main crystalline phase(s); (ii) articles made from said novel glass-ceramic materials; (iii) lithium alumino-silicate glasses, precursors of such novel glass-ceramic materials; and (iv) methods for preparing the aforesaid novel glass-ceramic materials and the aforesaid articles made of said novel glass-ceramic materials. The present invention relates to the use of SnO2 (0.15 to 0.3% by weight) and CeO2 and/or MnO2 (0.7 to 1.5% by weight), as an agent for fining the glass-ceramic material glass precursor.

Abstract: The invention relates to: a method of preparing glass-ceramics of ?-quartz and/or of ?-spodumene; a method of preparing articles made from said glass-ceramics; novel glass-ceramics of ?-quartz and/or of ?-spodumene; articles made from said novel glass-ceramics; and lithium aluminosilicate glasses, which are precursors of such novel glass-ceramics. The present invention relates to the use, as agent for fining the glass-ceramic glass precursor, of fluorine and at least one oxide of a multivalent element.

Abstract: The present invention relates to: novel glass-ceramics of ?-quartz and/or of ?-spodumene; articles made from said novel glass-ceramics; and ithium alumino-silicate glasses, which are precursors of said novel glass-ceramics; methods of preparing said novel glass-ceramics and articles made from said novel glass-ceramics. The present invention relates to the use of SnO2 and of Br, as an agent for fining the glass-ceramic glass precursor.

Abstract: The present invention relates to: novel glass-ceramics of ?-quartz and/or of ?-spodumene; articles made from said novel glass-ceramics; and ithium alumino-silicate glasses, which are precursors of said novel glass-ceramics; methods of preparing said novel glass-ceramics and articles made from said novel glass-ceramics. The present invention relates to the use of SnO2 and of Br, as an agent for fining the glass-ceramic glass precursor.