Patent classifications
C04B37/04
LASER WELDING OF HIGH THERMAL EXPANSION GLASSES AND GLASS-CERAMICS
Disclosed herein are methods for welding a first substrate and a second substrate, the method comprising bringing the first and second substrates into contact to form a substrate interface, and directing a laser beam operating at a predetermined wavelength through the second substrate onto the substrate interface, wherein the first substrate absorbs light from the laser beam in an amount sufficient to form a weld between the first substrate and the second substrate. The disclosure also relates to glass and/or glass-ceramic packaging and OLED display produced according to the methods disclosed herein.
Embedding sensors in 3D-printed silicon carbide
An improved method for embedding one or more sensors in SiC is provided. The method includes depositing a binder onto successive layers of a SiC powder feedstock to produce a dimensionally stable green body have a true-sized cavity. A sensor component is then press-fit into the true-sized cavity. Alternatively, the green body is printed around the sensor component. The assembly (the green body and the sensor component) is heated within a chemical vapor infiltration (CVI) chamber for debinding, and a precursor gas is introduced for densifying the SiC matrix material. During infiltration, the sensor component becomes bonded to the densified SiC matrix, the sensor component being selected to be thermodynamically compatible with CVI byproducts at elevated temperatures, including temperatures in excess of 1000 C.
Method of producing lightweight structural elements
The invention relates to a method of producing lightweight structural elements which are produced as a composition construction element having at least one cover plate and one carrier element which are connected to one another. A carrier element, at which at least one apertures and/or at least one cut-out is/are formed and at least one further element, which is a cover plate, are connected to one another. A carrier element and at least one cover plate can be formed from a glass, a glass ceramic material, a ceramic material and/or silicon having an oxide surface layer which is formed at least in the bonding region of the elements to be connected to one another. The carrier element should have at least a double thickness with respect to the thickness of a cover plate. The surfaces of the cover plate(s) and of the carrier element to be connected to one another should be intensely cleaned in their bonding regions and should be smoothed such that a roughness of the surface is achieved there, such that they are in direct touching contact with at least 80% of their bonding surface with an active compression source and in this respect a thermal treatment is carried out at a temperature of at least 100 C. and maintaining of the temperature over a period of at least 0.5 h to establish a bond connection of the cover plate(s) and the carrier element. In this respect, at least one cover plate should be connected to a surface of the carrier element at which at least one opening of an aperture or of a cut-out is arranged.
Method of producing lightweight structural elements
The invention relates to a method of producing lightweight structural elements which are produced as a composition construction element having at least one cover plate and one carrier element which are connected to one another. A carrier element, at which at least one apertures and/or at least one cut-out is/are formed and at least one further element, which is a cover plate, are connected to one another. A carrier element and at least one cover plate can be formed from a glass, a glass ceramic material, a ceramic material and/or silicon having an oxide surface layer which is formed at least in the bonding region of the elements to be connected to one another. The carrier element should have at least a double thickness with respect to the thickness of a cover plate. The surfaces of the cover plate(s) and of the carrier element to be connected to one another should be intensely cleaned in their bonding regions and should be smoothed such that a roughness of the surface is achieved there, such that they are in direct touching contact with at least 80% of their bonding surface with an active compression source and in this respect a thermal treatment is carried out at a temperature of at least 100 C. and maintaining of the temperature over a period of at least 0.5 h to establish a bond connection of the cover plate(s) and the carrier element. In this respect, at least one cover plate should be connected to a surface of the carrier element at which at least one opening of an aperture or of a cut-out is arranged.
Method for integrally bonding a glass element to a support element, and optical device
A method of integrally bonding a glass element to a support element, the method comprising a step of inserting at least one contact element into a contact recess in a surface of the support element. In addition, the method comprises a step of placing the glass element on a portion of the contact element which portion protrudes beyond the surface, and a step of locally heating the contact element in order to connect the glass element to the carrier element via the contact element. The method also comprises a step of coating at least a part of the contact recess with a separating layer prior to the step of insertion.
GLASS BOTTOM CERAMIC VESSEL
A vessel comprises a ceramic body and a glass bottom. The glass bottom is formed of a first glass portion and a second glass portion which are fused together.
Bond produced with an at least partially crystallized glass, such as a metal-to-glass bond, in particular a metal-to-glass bond in a feed-through element or connecting element, and method for producing such a bond, in particular in a feed-through element or connecting element
An at least partially crystallized glass includes at least one crystal phase and pores which are distributed in the at least partially crystallized glass in a structured manner.
Lamination member and glass composition
The present invention relates to a laminated member, including: a glass member having a linear transmittance at a wavelength of 850 nm of 80% or more; a bonding layer containing a resin and lying on the glass member; and a SiSiC member lying on the bonding layer, in which the glass member includes predetermined amounts of SiO.sub.2, Al.sub.2O.sub.3, B.sub.2O.sub.3, and P.sub.2O.sub.5, the SiSiC member has an average linear expansion coefficient at 20 to 200 C. of 2.85 to 4.00 ppm/ C., and has an average linear expansion coefficient at 20 to 200 C. of 1.50 to 5.00 ppm/ C., and the laminated member has an absolute value |-|, which is a value obtained by subtracting from , of 2.00 ppm/ C. or less.
Glass
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 at from 50 C. to 350 C. of from 510.sup.7/ C. or more and less than 3310.sup.7/ C.