The invention relates to glass articles, in particular flat glasses, in the case of which the surface material has gradient material properties as a result of targeted process control which in turn lead to compressive prestressing of the surface. The invention also relates to a method for producing the glass articles and the use thereof.

The invention relates to a method for theiiiially stable joining of a glass element to a support element, wherein the glass element has a first coefficient of expansion and the support element has a second coefficient of expansion differing from the first coefficient of expansion. The method thus comprises a step of attaching an intermediate glass material to the support element, wherein the intermediate glass material has a third coefficient of expansion which substantially corresponds to the second coefficient of expansion. In addition, the method comprises a step of local heating of the intermediate glass material in order to join the glass element to the support element via the intermediate glass material.

A window glass structure according to one aspect of the present invention includes a window glass for a vehicle that has a surface provided with a conductive layer having a predetermined pattern, and a connection terminal that is soldered to the conductive layer. The connection terminal includes a first joining portion that is joined to the conductive layer by soldering using a lead-free solder, a first side plate that is linked to the first joining portion and extends in a direction of separation from the surface of the window glass, a second joining portion that is joined to the conductive layer by soldering using a lead-free solder, a second side plate that is linked to the second joining portion and extends in a direction of separation from the surface of the window glass, a bridge portion that extends so as to link the two side plates, and a terminal portion configured to be linked to the bridge portion so as to have a face that is oriented in a direction different from directions in which faces of the two side plates and the bridge portion are oriented, at a position separated from regions to which the first side plate and the second side plate are linked.

A stress-engineered frangible structure includes multiple discrete glass members interconnected by inter-structure bonds to form a complex structural shape. Each glass member includes strengthened (i.e., by way of stress-engineering) glass material portions that are configured to transmit propagating fracture forces throughout the glass member. Each inter-structure bond includes a bonding member (e.g., glass-frit or adhesive) connected to weaker (e.g., untreated, unstrengthened, etched, or thinner) glass member region(s) disposed on one or both interconnected glass members that function to reliably transfer propagating fracture forces from one glass member to other glass member. An optional trigger mechanism generates an initial fracture force in a first (most-upstream) glass member, and the resulting propagating fracture forces are transferred by way of inter-structure bonds to all downstream glass members. One-way crack propagation is achieved by providing a weaker member region only on the downstream side of each inter-structure bond.

A method of forming a sealed device comprising providing a first substrate having a first surface, providing a second substrate adjacent the first substrate, and forming a weld between an interface of the first substrate and the adjacent second substrate, wherein the weld is characterized by ((σ.sub.tensile stress location)/(σ.sub.interface laser weld))<<1 or <1 and σ.sub.interface laser weld>10 MPa or >1 MPa where σ.sub.tensile stress location is the stress present in the first substrate and σ.sub.interface laser weld is the stress present at the interface. This method may be used to manufacture a variety of different sealed packages.

A machine arrangement, including at least one bearing ring, wherein a glass fiber is connected with the machine arrangement. To allow a proper measurement of stresses, even at curved surfaces of the machine arrangement as it is typical in the case of bearing rings, the connection between the glass fiber and the machine arrangement is established by a glass material. The glass material is connected by material bonding with the machine arrangement as well as with the glass fiber.

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.

An electronic device is provided which can be worn on the body or implanted into the body, such as in the form of a pulse watch and/or a smartwatch and/or an implant. The electronic device includes a photoplethysmographic measuring device. A transmitter diode and a receiver diode are arranged under a window made of glass or glass ceramics. The window is implemented as a compression glass seal and/or as a fiber-optic plate.

The glass ceramic material of the present disclosure contains a glass that contains SiO.sub.2, B.sub.2O.sub.3, Al.sub.2O.sub.3, and M.sub.2O, where M is an alkali metal, and a filler that contains quartz, Al.sub.2O.sub.3, and ZrO.sub.2. The glass ceramic material contains the glass in an amount of 57.4% by weight or more and 67.4% by weight or less, the quartz in the filler in an amount of 29% by weight or more and 39% by weight or less, the Al.sub.2O.sub.3 in the filler in an amount of 1.8% by weight or more and 5% by weight or less, and the ZrO.sub.2 in the filler in an amount of 0.3% by weight or more and 1.8% by weight or less.

A ground coat enamel composition for production of an adhesion promoter layer between steel and at least one cover coat enamel for production of an enamel-based coating that is highly corrosion-resistant with respect to mechanical, thermal and chemical effects. The ground coat enamel composition includes boron oxide (B.sub.2O.sub.3) and alkali metal oxide(s), especially Li.sub.2O, Na.sub.2O and/or K.sub.2O, in percentage proportions by weight: a first main constituent, SiO.sub.2 from 35-70%, preferably 40-65%, and, as a second main constituent, from Fe.sub.2O.sub.3 5-28%, preferably in the range from 7-23% and particularly 8%-15% by weight. Also disclosed is a ground coat enamel layer produced from such a ground coat enamel composition. A highly corrosion-resistant article having such a ground coat enamel layer. A method for producing such a ground coat enamel layer and also a method for producing a highly corrosion-resistant article using such a ground coat enamel composition.