Electrostatic chucks and methods of forming electrostatic chucks are disclosed. Exemplary electrostatic chucks include a ceramic body, a device embedded within the ceramic body, and an interface layer formed overlying the device. Exemplary methods include providing ceramic precursor material within a mold, providing a device, coating the device with an interface material to form a coated device, placing the coated device on or within the ceramic precursor material, and sintering the ceramic precursor material to form the electrostatic chuck and an interface layer between the device and ceramic material formed during the step of sintering.

A method of forming a ceramic matrix composite component is provided. The method includes applying a first amount of adhesive across a surface of a release film, providing a first ceramic foam panel including a plurality of channels formed on a first side of the first ceramic foam panel, contacting the first ceramic foam panel and the release film such that adhesive transfers to the first side of the first ceramic foam panel, and coupling the first ceramic foam panel to a second ceramic foam panel.

Chemical methods, optionally in combination with physical methods, may be used to increase the strength of the bond formed by a braze material between a polycrystalline material and a hard composite. Such polycrystalline materials brazed to hard composites may be found in various wellbore tools include drill bit cutters. An exemplary method may include forming a bonding layer on a bonding surface of a polycrystalline material body that comprises a hard material, the bonding surface opposing a contact surface of the polycrystalline material body, and the bonding layer substantially formed by a [111] crystal structure of the hard material, a [100] crystal structure of the hard material, or a combination thereof; and brazing the bonding layer to a hard composite using a braze material.

Disclosed herein are sealed devices comprising at least one cavity containing at least one quantum dot or at least one laser diode are also disclosed herein. The sealed devices can comprise a glass substrate sealed to an inorganic substrate, optionally via a sealing layer, the seal extending around the at least one cavity. Display and optical devices comprising such sealed devices are also disclosed herein, as well as methods for making such sealed devices.

A pre-form CMC cavity and method of forming pre-form CMC cavity for a ceramic matrix component includes providing a mandrel, applying a base ply to the mandrel, laying-up at least one CMC ply on the base ply, removing the mandrel, and densifying the base ply and the at least one CMC ply. The remaining densified base ply and at least one CMC ply form a ceramic matrix component having a desired geometry and a cavity formed therein. Also provided is a method of forming a CMC component.

A method of forming a hybrid metal composite structure including at least one metal ply. The method includes forming at least one metal ply, forming the at least one metal ply comprising forming at least one perforation in the at least one metal ply, abrasively blasting at least one surface of the at least one metal ply to coarsen the at least one surface of the metal ply, and exposing the at least one metal ply to at least one of an acid or a base. The method further includes disposing at least one fiber composite material structure adjacent the at least one metal ply. Related methods of forming a portion of a rocket case and related hybrid metal composite structures are also disclosed.

A sintered polycrystalline body and a method of forming the sintered polycrystalline body are disclosed. The sintered polycrystalline body comprises a plurality of particles cubic boron nitride dispersed in a matrix. The matrix includes materials selected from compounds of any of titanium and aluminium. The polycrystalline body further comprises 0.1 to 5.0 volume % of lubricating chalcogenide particles dispersed in the matrix. The chalcogenide particles have a coefficient of friction of less than 0.1 with respect to a workpiece material. Preferably sulfide particles are used as lubricant. Preferably 30-70 vol.-% cBN is contained. Sintering takes place at 1100-1600 C. and 4-8 GPa.

The surface-coated cBN sintered material includes a cBN sintered material containing cBN particles and a binder, and a coating. A proportion of the cBN particles in the cBN sintered material is 80 to 98% by volume, the binder contains a first compound including at least one element of Al and Cr and at least one element of N, B and O. The coating contains a layer A in contact with the cBN sintered material. The layer A is constituted of Al.sub.x1Cr.sub.y1M.sub.z1C.sub.a1Nb.sub.b1O.sub.c1 (provided that M is at least one element of Ti, V, Nb and Si, and 0.25x10.75, 0.25y10.75, 0z10.5, x1+y1+z1=1, 0a10.5, 0.5b11, 0c10.1, and a1+b1+c1=1 are satisfied).

A pre-form CMC cavity and method of forming pre-form CMC cavity for a ceramic matrix component includes providing a mandrel, applying a base ply to the mandrel, laying-up at least one CMC ply on the base ply, removing the mandrel, and densifying the base ply and the at least one CMC ply. The remaining densified base ply and at least one CMC ply form a ceramic matrix component having a desired geometry and a cavity formed therein. Also provided is a method of forming a CMC component.

A superhard polycrystalline construction (30) comprises a first region (34) comprising a body of thermally stable polycrystalline superhard material having an exposed surface forming a working surface (4), and a peripheral side edge (6), a second region (32) forming a substrate to the first region, and a third region (36) at least partially interposed between the first and second regions wherein the third region comprises a material more acid resistant than polycrystalline diamond material having a binder-catalyst phase comprising cobalt, and/or more acid resistant than cemented carbide material.