Abstract:
A ceramic forming device for fusion drawing a glass ribbon includes a honeycomb structure. In further examples, a method of fusion drawing a glass ribbon includes the step of providing a ceramic forming device with a honeycomb structure. Methods of making a ceramic forming device for fusion drawing a glass ribbon include the step of extruding a ceramic-forming batch material through a die member to form a green body with a honeycomb structure including a plurality of walls at least partially defining a plurality of channels extending through the green body. Each of the plurality of walls has a thickness defined between a corresponding pair of the channels from about 0.5 mm to about 30 mm. The methods further include the step of firing the green body to form a fired ceramic body with the honeycomb structure. The methods still further include the step of providing the ceramic forming device with a wedge and a trough at least partially defined by a pair of weirs, wherein the honeycomb structure forms at least a portion of the ceramic forming device.
Abstract:
A housing (102) for a portable electronic device includes a radio frequency transparent polycrystalline ceramic portion comprising a first surface (106) and a second surface (104) parallel to the first surface (106). The radio frequency transparent polycrystalline ceramic portion comprises a macro-texture (210) on at least a portion of the first surface (106), and a predetermined micro-texture (410) is disposed on at least a portion of the macro-texture (210). A method for manufacturing a housing (102) for a portable electronic device includes forming a green ceramic article comprising a first surface (106) and a second surface (104) parallel to the first surface (106), embossing at least a portion of the first surface (106) of the green ceramic article with a macro-texture (210), and sintering the green ceramic article comprising the macro-texture (210) to form a sintered ceramic article. A predetermined micro-texture (410) is disposed on at least a portion of the macro-texture (210).
Abstract:
A manufacturing line includes a tape of green material that is directed through a furnace so that the furnace burns off organic binder material and then partially sinters the tape without the use of a setter board. Sintered articles resulting from the manufacturing line may be thin with relatively large surface areas; and, while substantially unpolished, have few sintering-induced surface defects. Tension may be applied to the partially sintered tape as it passes through a second furnace on the manufacturing line to shape resulting sintered articles. The furnace is preferably vertically oriented and is operated preferably continuously. Preferably ceramic materials are used for forming the tape.
Abstract:
A quantum memory system includes a doped polycrystalline ceramic optical device, a magnetic field generation unit, and one or more pump lasers. The doped polycrystalline ceramic optical device is positioned within a magnetic field of the magnetic field generation unit when the magnetic field generation unit generates the magnetic field, the one or more pump lasers are optically coupled to the doped polycrystalline ceramic optical device, and the doped polycrystalline ceramic optical device is doped with a rare-earth element dopant distributed within a crystal lattice of the doped polycrystalline ceramic optical device, such that at least 50% of the rare-earth element dopant is doped into grains of the crystal lattice at locations apart from the grain boundaries of the crystal lattice.
Abstract:
A system, process and related sintered article are provided. The process includes supporting a piece of inorganic material with a pressurized gas and sintering the piece of inorganic material while supported by the pressurized gas by heating the piece of inorganic material to a temperature at or above a sintering temperature of the inorganic material such that the inorganic material is at least partially sintered forming the sintered article. The inorganic material is not in contact with a solid support during sintering. The sintered article, such as a ceramic article, is thin, has high surface quality, and/or has large surface areas.
Abstract:
A method of treating a ceramic body in a glass making process includes delivering a molten glass to a heated ceramic body, the ceramic body including a ceramic phase and an intergranular glass phase, the molten glass being in contact with a surface of the ceramic body. The method further includes contacting the ceramic body with a first electrode and contacting the molten glass with a second electrode. The method further includes applying an electric field between the first electrode and the second electrode to create an electric potential difference across the ceramic body between the first and second electrodes, the electric potential difference being less than an electrolysis threshold of the ceramic phase and the intergranular glass phase. The intergranular glass phase demixes under driven diffusion in the applied electric field and mobile cations in the intergranular glass phase enrich proximate one of the first and second electrode.
Abstract:
A stiffened thin substrate with a substrate layer and a perimetrical glass frit rib bonded to a first surface of the substrate layer is provided. The perimetrical glass frit rib bonded to the first surface of the substrate layer may per unit length, of the substrate layer subjected to a 5 gram load by at least 15%. An electronic device layer may be thermal bonded to a second surface of the substrate layer opposite the first surface, and the perimetrical glass frit rib bonded to the first surface of the substrate layer may decrease thermal deflection, per unit length, of the substrate layer by at least 50% when the substrate layer with the electronic device layer is cooled from 600°C to 23°C.
Abstract:
A system is provided for sintering thin, wide, and/or long tape materials such as in a roll to roll process. The system is arranged to control sintering and limit deformation of the tape during sintering to produce sintered material.
Abstract:
A method of making a glass sheet includes exposing a refractory block material comprising at least one multivalent component to a reducing atmosphere for a time and at a temperature sufficient to substantially reduce the at least one multivalent component of the refractory block material. The method also includes flowing molten glass over the refractory block material that has been exposed to the reducing atmosphere while preventing substantial re-oxidation of the at least one multivalent component.
Abstract:
A glass forming apparatus comprises a forming device configured to form a glass ribbon from a quantity of molten glass. The glass forming apparatus includes a refractory material comprising monazite (REPO 4 ). In another example, a method of forming a glass ribbon with a glass forming apparatus includes the step of supporting a quantity of molten glass with a refractory member comprising a refractory material comprising monazite (REPO 4 ). The method further includes the step of forming the glass ribbon from the quantity of molten glass.