Abstract: The present disclosure relates to a high voltage vacuum tube including: a vacuum tube envelope comprising an interior; an anode assembly disposed within the interior of the vacuum tube envelope; and a cathode assembly disposed within interior of the vacuum tube envelope that emits an electrode beam to strike a target surface of the anode assembly and form electromagnetic radiation. The high voltage vacuum tube includes a braze assembly, said braze assembly comprising a first component and a second component joined together by a first braze joint, said first braze joint comprising a composition including no more than 18.0 wt % in total of one of more precious metals selected from Au, Pd and Pt, where at least a portion of the braze joint is exposed to the interior of the vacuum tube envelope.

Abstract: This invention relates to an assemblage of a semiconductor processing apparatus comprising a first aluminum nitride (AlN) component and a second aluminum nitride component, wherein the first and second aluminum nitride components are connected by a joint, said joint comprising a composite glass-ceramic comprising Y2O3—Al2O3—SiO2 (YAS) glass; and at least one of crystalline aluminosilicate and aluminum nitride.

Abstract: There is provided a feedthrough including a ceramic body; and a plurality of electrical conductors embedded in the ceramic body. Wherein the density of the electrical conductors exceeds 1 conductor per 23 thou2 (14,839 ?m2) through a planar cross-section of the ceramic body.

Abstract: A layer arrangement for an electrostatic chuck comprises a first ceramic layer; a second ceramic layer; a metallised layered disposed between the first and second ceramic layers. The first ceramic layer comprises at least 90.0 wt % alumina, titania, ZrO2, Y2O3, AlN, Si3N4, SiC, transition metal oxides or combinations thereof; and in the range of 0.1 to 10.0 wt % tantalum oxide (Ta2O5).

Abstract: A method of forming one or more high temperature co-fired ceramic articles, comprising the steps of:— a) forming a plurality of green compacts, by a process comprising dry pressing a powder comprising ceramic and organic binder to form a green compact; b) disposing a conductor or conductor precursor to at least one surface of at least one of the plurality of green compacts to form at least one patterned green compact; c) assembling the at least one patterned green compact with one or more of the plurality of green compacts or patterned green compacts or both to form a laminated assembly; d) isostatically pressing the laminated assembly to form a pressed laminated assembly; e) firing the pressed laminated assembly at a temperature sufficient to sinter the ceramic layers together.

Abstract: The present invention relates to an article comprising a ceramic substrate (310) comprising a source of zirconium oxide; a metallic substrate (320); and a braze joint disposed between the ceramic substrate and the metallic substrate. The braze joint comprises (i) a gold rich phase (330) interfacing against a surface of the ceramic substrate. The gold rich phase comprises a refractory metal selected from the group consisting of molybdenum, tungsten, niobium, tantalum and combinations thereof; and (ii) a second metallic phase (340) comprising a metal selected form the group consisting of nickel, iron, vanadium, cobalt, chromium, osmium, tantalum or combinations thereof.

Abstract: Articles may be protected against halide plasma, by applying a rare earth-containing glaze to the surface of the article. The glaze may be a coating comprising; 20 to 90 mol % SiO2, 0 to 60 mol % Al2O3, 10 to 80 mol % rare earth oxides and/or rare earth fluorides (REX), wherein SiO2+Al2O3+REX?60 mol %.

Abstract: A layer arrangement for an electrostatic chuck comprises a first ceramic layer; a second ceramic layer; a metallised layered disposed between the first and second ceramic layers. The first ceramic layer comprises at least 90.0 wt % 5 alumina, titania, ZrO2, Y2O3, AlN, Si3N4, SiC, transition metal oxides or combinations thereof; and in the range of 0.1 to 10.0 wt % tantalum oxide (Ta2O5).

Abstract: A brazed article comprising a ceramic component, a metallizing layer comprising tungsten and yttrium oxide disposed against a surface of the ceramic component, and a bonding layer disposed between the metallizing layer and a metal component wherein said bonding layer comprises a nickel-rich portion proximal to the ceramic component and a gold-rich portion interfacing against the metal component.

Abstract: A method of forming one or more high temperature co-fired ceramic articles, comprising the steps of:— a) forming a plurality of green compacts, by a process comprising dry pressing a powder comprising ceramic and organic binder to form a green compact; b) disposing a conductor or conductor precursor to at least one surface of at least one of the plurality of green compacts to form at least one patterned green compact; c) assembling the at least one patterned green compact with one or more of the plurality of green compacts or patterned green compacts or both to form a laminated assembly; d) isostatically pressing the laminated assembly to form a pressed laminated assembly; e) firing the pressed laminated assembly at a temperature sufficient to sinter the ceramic layers together.

Abstract: A brazed article comprising a ceramic component, a metallizing layer comprising tungsten and yttrium oxide disposed against a surface of the ceramic component, and a bonding layer disposed between the metallizing layer and a metal component wherein said bonding layer comprises a nickel-rich portion proximal to the ceramic component and a gold-rich portion interfacing against the metal component.

Abstract: A feedthrough assembly (1) comprising a feedthrough body (10) comprising: a ceramic body (2) having a first side (3) and a second side (4); a conductive element (5) extending through said ceramic body (2) between said first side (3) and said second side (4); a conductive pad (6) electrically connected to said conductive element (5).

Abstract: There is provided a feedthrough including a ceramic body; and a plurality of electrical conductors embedded in the ceramic body. Wherein the density of the electrical conductors exceeds 1 conductor per 23 thou2 (14,839 ?m2) through a planar cross-section of the ceramic body.

Abstract: The present invention relates to an article comprising a ceramic substrate (310) comprising a source of zirconium oxide; a metallic substrate (320); and a braze joint disposed between the ceramic substrate and the metallic substrate. The braze joint comprises (i) a gold rich phase (330) interfacing against a surface of the ceramic substrate. The gold rich phase comprises a refractory metal selected from the group consisting of molybdenum, tungsten, niobium, tantalum and combinations thereof; and (ii) a second metallic phase (340) comprising a metal selected form the group consisting of nickel, iron, vanadium, cobalt, chromium, osmium, tantalum or combinations thereof.

Abstract: A method of forming one or more high temperature co-fired ceramic articles, comprising the steps of: a) forming a plurality of green compacts, by a process comprising dry pressing a powder comprising ceramic and organic binder to form a green compact; b) disposing a conductor or conductor precursor to at least one surface of at least one of the plurality of green compacts to form at least one patterned green compact; c) assembling the at least one patterned green compact with one or more of the plurality of green compacts or patterned green compacts or both to form a laminated assembly; d) isostatically pressing the laminated assembly to form a pressed laminated assembly; e) firing the pressed laminated assembly at a temperature sufficient to sinter the ceramic layers together.

Abstract: Brazing alloy wire formed from a composite comprising a sheath of at least one ductile first phase and a core comprising particles of a different composition to the sheath, in which: the sheath has an annealing temperature in degrees K the particles have a melting point at least 20% above the annealing temperature of the sheath the particles have a size distribution in which 25% by weight or less comprise particles less than 25 ?m in size the particles are discrete.

Abstract: A process for joining articles comprises the steps of: joining the articles together at a brazing temperature to form one or more brazed joints in a brazed assembly, wherein at least one of the one or more brazed joints comprises a filler at least in part capable of age hardening at a temperature below the brazing temperature; and heat treating the brazed assembly at a temperature and for a time sufficient to age harden the filler at least in part; wherein the articles comprise at least one diamond body, and the filler comprises an active brazing alloy for brazing to the at least one diamond body.

Abstract: Disclosed is a method of brazing articles together to form at least one braze defined by complementarily curved faying surfaces on the articles, the faying surfaces each having at least one region of curvature comprising at least one point from which the surface curves in more than one direction, the method comprising the steps of: a) disposing between the complementarily curved faying surfaces at least one amorphous brazing alloy preform of complementary curvature at least in part to said at least one region of the complementarily curved faying surfaces to conform to the complementarily curved faying surfaces in said region; and b) heating the articles and at least one amorphous brazing alloy preform to a brazing temperature at which the amorphous brazing alloy flows and brazes. and brazing alloy preforms for use in such methods.

Abstract: A method of forming one or more high temperature co-fired ceramic articles, comprising the steps of: —a) forming (34) a plurality of green compacts, by a process comprising dry pressing a powder comprising ceramic and organic binder to form a green compact; b) disposing (38) a conductor or conductor precursor to at least one surface of at least one of the plurality of green compacts to form at least one patterned green compact; c) assembling the at least one patterned green compact with one or more of the plurality of green compacts or patterned green compacts or both to form a laminated assembly; d) isostatically (40) pressing the laminated assembly to form a pressed laminated assembly; e) firing (42) the pressed laminated assembly at a temperature sufficient to sinter the ceramic layers together.

Abstract: Brazing alloy wire formed from a composite comprising a sheath of at least one ductile first phase and a core comprising particles of a different composition to the sheath, in which: the sheath has an annealing temperature in degrees K the particles have a melting point at least 20% above the annealing temperature of the sheath the particles have a size distribution in which 25% by weight or less comprise particles less than 25 ?m in size the particles are discrete