Provided are a brazing material in paste form containing a powder mixture that contains titanium powder having an average particle diameter (D50) of 20 μm or less in an amount of 0.7 to 2.0 mass %, copper powder in an amount of 3 to 15 mass %, and silver powder as the remaining portion, and a vehicle, and techniques associated with the brazing material.

An electric circuit board includes an insulating substrate, a metal plate, and a brazing material with which the insulating substrate and the metal plate are joined together. The metal plate has a side surface over which recessed portions are scattered. The side surface of the metal plate has lines in regions around the recessed portions. The metal plate is made of copper or a copper alloy. The brazing material has a side surface that is continuous with the side surface of the metal plate. The brazing material is a silver-copper brazing alloy. A ratio of copper on the side surface of the brazing material is higher than a copper component ratio of the silver-copper brazing alloy.

The invention relates to a process for producing a metal-ceramic substrate (1), comprising: providing a ceramic element (10) and a metal layer, providing a gas-tight container (25) that encloses the ceramic element (10), the container (25) preferably being formed from the metal layer or comprising the metal layer, forming the metal-ceramic substrate (1) by connecting the metal layer to the ceramic element (10) by means of hot isostatic pressing, wherein, for the purpose of forming the metal-ceramic substrate (1), an active metal layer (15) or a contact layer comprising an active metal is arranged at least in some sections between the metal layer and the ceramic element (10) for supporting the connection of the metal layer to the ceramic element (10).

Disclosed herein is a dual density disc comprising a dense outer tube comprising a metal oxide having a purity of greater than 92%; and a porous core comprising a metal oxide of a lower density than a density of the dense outer tube; wherein the porous core has a metal oxide purity of greater than 99%; where the dense outer tube has an inner tapered surface.

A light generator comprises a light conversion device and a light source arranged to apply a light beam to the light conversion element. The light conversion device includes an optoceramic or other solid phosphor element comprising one or more phosphors embedded in a ceramic, glass, or other host, a metal heat sink, and a solder bond attaching the optoceramic phosphor element to the metal heat sink. The optoceramic phosphor element does not undergo cracking in response to the light source applying a light beam of beam energy effective to heat the optoceramic phosphor element to the phosphor quenching point.

When a laminate of a plurality of different materials including a metal plate is bonded in a pressurized and heated state, a first pressurizing member in which a first metal foil/a carbon sheet or a ceramic sheet/a graphite sheet are laminated in this order is arranged so that the first metal foil is in contact with a surface of the first metal plate of the laminate, the first metal foil is made of a material that does not react at a contact surface of the first plate member and the first metal foil when heating, and a product of a Young's modulus (GPa) and a thickness (mm) of the first metal foil is 0.6 or more and 100 or less, so that a good bonded body can be manufactured by evenly pressurizing the laminate and foreign substances can be restrained from adhering to the surface of the laminate.

A member for a semiconductor manufacturing apparatus includes a plate, at least one through hole, and an insulating pipe (cylindrical member). The plate is formed of an alumina sintered body, has a front surface serving as a wafer placement surface, and includes therein an electrode. The through hole penetrates through the plate in a thickness direction. The insulating pipe is formed of an alumina sintered body and is joined to a rear surface of the plate with a first joining layer having a ring shape and formed of an alumina sintered body interposed between the insulating pipe and the rear surface of the plate.

According to an aspect of the invention, there is provided a plasma-resistant member including: a base member; and a layer structural component formed at a surface of the base member, the layer structural component including an yttria polycrystalline body and being plasma resistant, the layer structural component including a first uneven structure, and a second uneven structure formed to be superimposed onto the first uneven structure, the second uneven structure having an unevenness finer than an unevenness of the first uneven structure.

The present invention relates to a manufacturing process for a watch component (50) in composite material with a ceramic matrix comprising the following steps: depositing in a mould a succession of layers (10, 20, 30, 40) each comprising a ceramic powder (12), at least one layer (10; 10, 30; 10, 20, 30, 40) further including fibres (14) mixed with the ceramic powder (12), the fibres (14) being arranged randomly; performing a FAST/SPS sintering operation; demoulding the sintered watch component comprising the succession of layers (10, 20, 30, 40), and optionally machining the sintered component to the final dimensions of the watch component (50). The fibres (14) are visible on the surface of the watch component (50).

A surface-coated cutting tool including a tool substrate containing WC crystal grains and insulating grains, and a coating layer composed of a multiple nitride of Ti, Al, and V and disposed on the surface of the tool substrate. The multiple nitride is represented by a compositional formula: Ti.sub.aAl.sub.bV.sub.cN satisfying the following relations:
0.25≤a≤0.35,
0.64≤b≤0.74,
0<c≤0.06, and
a+b+c=1
wherein each of a, b, and c represents an atomic proportion. The coating layer is characterized by exhibiting a peak attributed to a hexagonal crystal phase and a peak attributed to a cubic crystal phase as observed through X-ray diffractometry.