A method of producing a ceramic manufactured object including (i) a step of leveling a ceramic powder to form a powder layer, (ii) a step of irradiating the powder layer with a laser beam based on three-dimensional data to crystallize an irradiated site, and (iii) performing the steps (i) and (ii) in repetition, wherein in the step (ii), a surface of the powder layer is irradiated with the laser beam in an unfocused state.

A low dispersion oxyfluoride glass comprising: in terms of cationic molar percentage: Al.sup.3+: 18 to 50, Y.sup.3+: 10 to 18, Mg.sup.2+: 5 to 12, Ca.sup.2+: 15 to 25, Sr.sup.2+: 5 to 15, Ba.sup.2+: 5 to 12, P.sup.5+: 0 to 0.1, La.sup.3+: 0 to 6, Li.sup.+: 0 to 5, Na.sup.+: 0 to 5, and K.sup.+: 0 to 5; and in terms of anionic molar percentage: F.sup.: 97 to 99.98, O.sup.2: 0.02 to 3, and Cl.sup.: 0 to 1. The oxyfluoride glass has an ultra-low dispersion property as well as excellent chemical stability and mechanical processing performance.

Provided is a glass composition that exhibits greater Faraday effect than ever before. A glass composition contains 48% or more of Tb.sub.2O.sub.3 (exclusive of 48%) in % by mole.

A heat-dissipating structure is formed by bonding a first member and a second member, each being any of a metal, ceramic, and semiconductor, via a die bonding member; or a semiconductor module formed by bonding a semiconductor chip, a metal wire, a ceramic insulating substrate, and a heat-dissipating base substrate including metal, with a die bonding member interposed between each. At least one of the die bonding members includes a lead-free low-melting-point glass composition and metal particles. The lead-free low-melting-point glass composition accounts for 78 mol % or more in terms of the total of the oxides V2O5, TeO2, and Ag2O serving as main ingredients. The content of each of TeO2 and Ag2O is 1 to 2 times the content of V2O5, and at least one of BaO, WO3, and P2O5 is included as accessory ingredients, and at least one of Y2O3, La2O3, and Al2O3 is included as additional ingredients.

Disclosed herein are methods and apparatuses for adding thermal energy to a glass melt. Apparatuses for generating a thermal plasma disclosed herein comprise an electrode, a grounded electrode, a dielectric plasma confinement vessel extending between the two electrodes, and a magnetic field generator extending around the dielectric plasma confinement vessel. Also disclosed herein are methods for fining molten glass comprising generating a thermal plasma using the apparatuses disclosed herein and contacting the molten glass with the thermal plasma. Glass structures produced according to these methods are also disclosed herein.

The purpose of the present invention is to provide a lead-free glass composition in which crystallization is suppressed and which has a low softening point. This lead-free glass composition is characterized by containing silver oxide, tellurium oxide and vanadium oxide, and further containing at least one compound selected from among yttrium oxide, lanthanum oxide, cerium oxide, erbium oxide, ytterbium oxide, aluminum oxide, gallium oxide, indium oxide, iron oxide, tungsten oxide and molybdenum oxide as an additional component, and in that the content values (mol %) of silver oxide, tellurium oxide and vanadium oxide satisfy the relationships Ag.sub.2O>TeO.sub.2?V.sub.2O.sub.5 and Ag.sub.5O?2V.sub.2O.sub.5 when calculated in terms of the oxides, and in that the content of TeO.sub.2 is 25-37 mol. %.

The present invention relates to a glass, in particular a glass for the joining of glass panes for the production of vacuum insulating glasses at processing temperatures 420 C., to the corresponding composite glass, and to the corresponding glass paste. Moreover, the present invention relates to a vacuum insulating glass produced using the glass paste according to the invention, to the production process thereof, and to the use of the inventive glass and/or composite glass, and glass paste. The glass according to the invention is characterized in that it comprises the following components, in units of mol-%: V.sub.2O.sub.5 5-58 mol-%, TeO.sub.2 40-90 mol-%, and at least one oxide selected from ZnO 38-52 mol-%, or Al.sub.2O.sub.3 1-25 mol %, or MoO.sub.3 1-10 mol-%, or WO.sub.3 1-10 mol-%, or a combination thereof.

Provided is a glass composition that exhibits greater Faraday effect than ever before. A glass composition contains 48% or more of Tb.sub.2O.sub.3 (exclusive of 48%) in % by mole.

An object is to provide a structural body having high light transmissivity and a high degree of freedom in shape, a manufacturing method for the structural body, and a precursor composition used in the manufacturing method.

A structural body according to an embodiment of the present disclosure includes a plurality of nanoparticles, the plurality of nanoparticles being directly covalent-bonded to each other without interposing an additive component other than the plurality of nanoparticles.

A vanadium-based glass material for local heat sealing has a glass composition containing, in terms of mol %, 30.0 to 60.0% V.sub.2O.sub.5, 20.1 to 30.0% ZnO, 10.0 to 25.0% TeO.sub.2, 1.0 to 5.0% Al.sub.2O.sub.3, 0.5 to 5.0% Nb.sub.2O.sub.5, 0 to 10.0% BaO, 0 to 5.0% Fe.sub.2O.sub.3, 0 to 5.0% MnO.sub.2, 0 to 5.0% CuO, 0 to 5.0% SiO.sub.2, and 0 to 8.0% CaO, and substantially not containing Pb and P.