The present invention relates to a glass including, represented by mole percent based on oxides: from 52% to 80% of SiO.sub.2; from 5% to 30% of B.sub.2O.sub.3; from 2% to 30% of Al.sub.2O.sub.3; from 0.1% to 11% of P.sub.2O.sub.5; and from 0.0001% to 5% of Na.sub.2O, in which the glass has an average thermal expansion coefficient α at from 50° C. to 350° C. of from 5×10.sup.−7/° C. or more and 33×10.sup.−7/° C. or less.

The present invention relates to parts of transparent corundum ceramics and the production and use of said parts.

A carrier structure (100), particularly for optical components, includes a carrier body (10) which is formed from ceramic with hollows (11), and at least one cover layer (21, 22) which is formed from glass, arranged on at least one surface of the carrier body (10), and is connected to the carrier body (10) by means of at least one bond connection (23, 24) produced by means of anodic bonding. Methods for producing the carrier structure (100) and the use of the carrier structure as a mirror body, carrier for optical components and/or mechanical carrier for dynamically moved components are also described.

Provided is a silicate glass, a method for preparing a silicate glass-ceramics by using the silicate glass, and a method for preparing a lithium disilicate glass-ceramics by using the silicate glass, and more particularly, to a method for preparing a glass-ceramics that has a nanosize of 0.2 to 0.5 μm and contains lithium disilicate and silicate crystalline phases. A nano lithium disilicate glass-ceramics containing a SiO.sub.2 crystalline phase includes: a glass composition including 70 to 85 wt % SiO.sub.2, 10 to 13 wt % Li.sub.2O, 3 to 7 wt % P.sub.2O.sub.5 working as a nuclei formation agent, 0 to 5 wt % Al.sub.2O.sub.3 for increasing a glass transition temperature and a softening point and enhancing chemical durability of glass, 0 to 2 wt % ZrO.sub.2, 0.5 to 3 wt % CaO for increasing a thermal expansion coefficient of the glass, 0.5 to 3 wt % Na.sub.2O, 0.5 to 3 wt % K.sub.2O, and 1 to 2 wt % colorants, and 0 to 2.0 wt % mixture of MgO, ZnO, F, and La.sub.2O.sub.3.

The object of the present invention is an integrally bonded composite component, a method for the production thereof, and the use thereof. The invention particularly relates to integrally bonded transparent ceramic composite components, to a method for the production of such ceramic composite components, and to the use thereof.

The object of the present invention is an integrally bonded composite component, a method for the production thereof, and the use thereof. The invention particularly relates to integrally bonded transparent ceramic composite components, to a method for the production of such ceramic composite components, and to the use thereof.

An electronic device housing, an electronic device and a compound body are provided. The electronic device housing comprises a frame; a sealing layer, disposed on at least a part of an outer surface of the frame, and including a plurality of sub-sealing layers laminated in sequence; and a back case, attached to the frame by the sealing layer, wherein two adjacent sub-sealing layers have different compositions.

Sintered product having a chemical analysis such that, in mass percentages: SiO.sub.2 content is greater than 0.2% and less than 2%, and CaO content is greater than 0.1% and less than 1.5%, and MgO content is less than 0.3%, and alumina and other elements being the complement at 100%, the content of other elements being less than 1.5%, having a relative density greater than 90%, comprising, for more than 90% of its volume, a stack of ceramic platelets (10) laid flat, all of said platelets having an average thickness less than 3 μm, more than 95% by number of said platelets each containing more than 95% by mass of alumina, having a width (l) greater than 81 mm.

This invention has an object to enhance the whole adhesiveness of a bonding material to a glass member and a bonding target member. A method for manufacturing a bonded body (10) includes: a placing step of placing a laminate (11) on plural urging members (32) in a storage part (24) of a jig main body (20) so that its first surface (11a) faces the plural urging members and placing a pressing transparent member (28) on a second surface (11b) of the laminate; after the placing step, a pressing step of pressing the second surface of the laminate via the pressing transparent member, thereby causing the first surface of the laminate to be pressed by urging forces of the plural urging members; and a bonding part forming step of forming a bonding part from the bonding material while pressing the laminate by the pressing step, thereby yielding a bonded body.

Provided is a silicate glass, a method for preparing a silicate glass-ceramics by using the silicate glass, and a method for preparing a lithium disilicate glass-ceramics by using the silicate glass, and more particularly, to a method for preparing a glass-ceramics that has a nanosize of 0.2 to 0.5 μm and contains lithium disilicate and silicate crystalline phases. A nano lithium disilicate glass-ceramics containing a SiO.sub.2 crystalline phase includes: a glass composition including 70 to 85 wt % SiO.sub.2, 10 to 13 wt % Li.sub.2O, 3 to 7 wt % P.sub.2O.sub.5 working as a nuclei formation agent, 0 to 5 wt % Al.sub.2O.sub.3 for increasing a glass transition temperature and a softening point and enhancing chemical durability of glass, 0 to 2 wt % ZrO.sub.2, 0.5 to 3 wt % CaO for increasing a thermal expansion coefficient of the glass, 0.5 to 3 wt % Na.sub.2O, 0.5 to 3 wt % K.sub.2O, and 1 to 2 wt % colorants, and 0 to 2.0 wt % mixture of MgO, ZnO, F, and La.sub.2O.sub.3.