An optical component includes a first substrate including a phosphor substrate and a second substrate including a translucent substrate and supporting the first substrate. A bonding layer is provided between the first substrate and the second substrate, and the bonding layer includes at least one kind of element contained on a surface of the first substrate facing the second substrate and at least one kind of element contained on a surface of the second substrate facing the first substrate. The bonding layer contains 2% by weight or more and 45% by weight or less of at least one kind of metal element which is not included in any of the first substrate and the second substrate.

An epitaxy substrate and a method of manufacturing the same are provided. The epitaxy substrate includes a device substrate and a handle substrate. The device substrate has a first surface and a second surface opposite to each other, and a bevel disposed between the first and the second surfaces. The handle substrate is bonded to the second surface of the device substrate, wherein the oxygen content of the device substrate is less than the oxygen content of the handle substrate, and a bonding angle greater than 90 is between the bevel of the device substrate and the handle substrate.

An apparatus includes a first component comprising a carbon composite substrate. A high temperature coating is disposed on the surface of the carbon composite substrate. The high temperature coating includes a bond layer of a metal carbide on the surface of the substrate. The apparatus includes a second component, and braze material joining the surface of the first component to the second component. In some examples, a brake assembly may include a rotor having a surface configured to interface with another component of the brake assembly. The brake assembly includes an insert joined to the surface of the rotor without a mechanical fastener, and the insert defines a tough mechanical contact surface configured to protect the rotor.

The invention relates to a method for joining a ceramic friction element (11) to a piezoelectric element (1), comprising, among other things, the following steps: pressing (14) a joining surface (10) of the friction element and a contact surface (9) of the piezoelectric element against each other with a low-melting glass mass (12) arranged therebetween and maintaining the pressing force for all subsequent steps; heating (17) the piezoelectric element and the friction element to a defined temperature above the Curie point of the piezoceramic material of the piezoelectric element and above the melting point of the low-melting glass mass; thereafter, while maintaining the temperature, applying an electric polarization voltage Up to electrodes of the piezoelectric element; removing the polarization voltage after the Curie point has been fallen below; and cooling the piezoelectric element and the friction element to room temperature without an electric voltage being applied to the electrodes.

A joined body 20 according to the present invention includes a first member 22 made of a porous ceramic, a second member 24 made of a metal, and a joint 30 formed of an oxide ceramic of a transition metal, the joint 30 joining the first member 22 to the second member 24. Alternatively, a joined body may include a first member made of a dense material, a second member made of a dense material, and a joint formed of an oxide ceramic of a transition metal, the joint joining the first member to the second member.

The bonded ceramic assembly of the present disclosure includes a first substrate made of ceramic, a second substrate made of ceramic, and a bonding layer positioned between the first substrate and the second substrate. The bonding layer contains aluminum, at least one of calcium and magnesium, a rare earth element, silicon, and oxygen. Out of a total 100 mass % of all of the components making up the bonding layer, the bonding layer contains from 33 mass % to 65 mass % aluminum in terms of oxide, a total of from 27 mass % to 60 mass % calcium and magnesium in terms of oxide, and from 2 mass % to 12 mass % rare earth element in terms of oxide. The silicon content, in terms of oxide, of the surface of the bonding layer is greater than in the interior of the bonding layer.

A method for the joining of ceramic pieces with a hermetically sealed joint comprising brazing a layer of joining material between the two pieces. The ceramic pieces may be aluminum nitride or other ceramics, and the pieces may be brazed with a silicon and an alloying element under controlled atmosphere. The joint material is adapted to later withstand both the environments within a process chamber during substrate processing, and the oxygenated atmosphere which may be seen within the interior of a heater or electrostatic chuck.

A ceramic matrix composite component includes a first substrate and a second substrate each formed of a silicide-containing ceramic matrix composite, silicon carbide layers respectively coating a bonding surface of the first substrate and a bonding surface of the second substrate, and a bonding layer formed of a silicon-containing alloy and provided between the silicon carbide layer coating the bonding surface of the first substrate and the silicon carbide layer coating the bonding surface of the second substrate.

The present disclosure relates to a brazed superabrasive assemblies and method of producing brazed superabrasive assemblies. The brazed superabrasive assemblies may include a plurality of braze alloy layers that are positioned opposite a stress relieving layer. The stress relieving layer may have a solidus temperature that is greater than a solidus temperature of the plurality of braze alloy layers.

In some examples, a technique may include positioning a first part comprising a ceramic or ceramic matrix composite and a second part comprising a ceramic or a CMC adjacent to each other to define a joint region at the interface of the first part and the second part. In some examples, the joint region may be heated using at least one of a laser or a plasma arc source to heat the joint region to an elevated temperature. The first and second parts may be pressed together and cooled to join the first and second parts at the joint region. In other examples, a solid braze material including a filler material and a metal or alloy may be delivered to the joint region and locally heated to cause a constituent of the filler material and a constituent of the metal or alloy to react. When reacted, the constituents may form a solid material, which may join the first and second parts.