The present disclosure provides a surge protection device including a ceramic substrate (1), at least one pair of discharge electrodes (31) disposed on a surface of the ceramic substrate (1) so as to face each other at end portions thereof with a space in between, outer electrodes (32) electrically connected to the corresponding discharge electrodes (31), and a discharge auxiliary electrode (4) disposed between the end portions of the pair of discharge electrodes (31) The discharge auxiliary electrode (4) contains crystalized glass and particles of conductive powder (40) dispersed apart from each other in the crystalized glass.

Provided is a nickel-based composite coating, method for producing the same and use thereof. A powder mixture is coated on the surface of a substrate to obtain a nickel-based composite coating, wherein the powder mixture comprises nickel-chromium-boron-silicon powders and barium titanate powders. The barium titanate powders are added to the nickel-based powders as a second phase to form BaTiO.sub.3—NiCrBSi metal-based ceramic composite coating. The nickel-based barium titanate composite coating has an excellent damping shock absorbing performance and gives the substrate strength as well. Comparing with the conventional coating materials, the coating obtained by the present disclosure through plasma cladding technique not only bonds with the substrate in a metallurgic way, but also has a small heat affected zone, specifically, an excellent damping shock absorbing performance. In embodiments of the present disclosure, vibration and noise generated by the cylinder head is reduced 20% by using the shock absorbing cladding coating.

An object of the invention is to provide an alloy article that exhibits even better mechanical properties than conventional high entropy alloy articles without sacrificing high corrosion resistance thereof. An alloy article according to the invention comprises matrix phase crystal grains being equiaxed crystals with an average crystal grain size of 150 μm or less, the alloy article having a metallic composition including: Co, Cr, Fe, Ni and Ti, each within a range of 5 atomic % or more and 35 atomic % or less; Mo within a range of more than 0 atomic % and less than 8 atomic %; and a balance comprising inevitable impurities, wherein in the matrix phase crystal grains, ultrafine particles with an average particle size of 100 nm or less and oxide particles with an average particle size of 100 nm or less are dispersedly precipitated.

The invention relates to a method for manufacturing a composite component of a timepiece or of a jewelry part, the composite component comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, said method comprising the steps of: providing a porous ceramic preform of the component, providing a metallic material, heating the metallic material to a temperature higher than the melting point of the metallic material, filling the pores of the ceramic preform with the molten metallic material, cooling the metallic material and the ceramic preform to obtain a solidified metallic material in the pores of the ceramic preform, and applying finishing treatments to obtain the composite component,

wherein said porous ceramic preform consists essentially of a material selected from the group consisting of Si.sub.3N.sub.4, SiO.sub.2 and mixtures thereof, and said metallic material is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals.

The invention relates also to a composite component of a timepiece or of a jewelry part comprising a porous ceramic part and a metallic material filling the pores of said ceramic part, wherein said porous ceramic part consists essentially of a material selected from the group consisting of Si.sub.3N.sub.4, SO.sub.2 and mixtures thereof, and said metallic material which is selected from the group consisting of gold, platinum, palladium metals and alloys of these metals.

A method of providing a particulate material from an at least substantially metallic and/or ceramic starting material, comprising the following steps:

(a) generating the particulate material from the starting material by vaporizing the starting material by introducing energy, preferably radiation energy, in particular by means of at least one laser, into the starting material and subsequently at least partially condensing the vaporized starting material,

b) collecting the particulate material in at least one receiving and/or transporting device, in particular at least one container,

c) receiving, in particular storing, and/or transporting the particulate material in the receiving and/or transporting device and/or in a further receiving and/or transporting device such that it can be used for a subsequent process, in particular in a state of at least non-permanent passivation, and

d) providing the particulate material for the subsequent process.

A thermoelectric conversion material having a high dimensionless figure of merit ZT includes: a large number of polycrystalline grains which include a skutterudite-type crystal structure containing Yb, Co, and Sb; and an intergranular layer which is between the neighboring polycrystalline grains and includes crystals in which an atomic ratio of O to Yb is more than 0.4 and less than 1.5. A method for manufacturing a thermoelectric conversion material includes: a weighing step; a mixing step; a ribbon preparation step by rapidly cooling and solidifying a melt of the raw materials by using a rapid liquid cooling solidifying method; a first heat treatment step including heat treating in an inert atmosphere with an adjusted oxygen concentration; a second heat treatment step including heat treating in a reducing atmosphere; and manufacturing the thermoelectric conversion material by a pressure sintering step in an inert atmosphere.

An oxygen solid solution titanium sintered compact includes a matrix made of a titanium component having an α-phase, oxygen atoms dissolved as a solute of solid solution in a crystal lattice of the titanium component, and metal atoms dissolved as a solute of solid solution in the crystal lattice of the titanium component.

The invention relates to a dispersion-hardened platinum composition comprising at least 70 wt. % platinum, the platinum composition containing up to 29.95 wt. % of one of the metals rhodium, gold, iridium and palladium, between 0.05 wt. % and 1 wt. % oxides of the non-precious metals zirconium, yttrium and scandium, and, as the remainder, the platinum including impurities, wherein between 7.0 mol. % and 11.0 mol. % of the oxides of the non-precious metals is yttrium oxide, between 0.1 mol. % and 5.0 mol. % of the oxides is scandium oxide, and the remainder of the oxides is zirconia, including oxide impurities. The invention also relates to a crucible for crystal growing, a semi-finished product, a tool, a tube, a stirrer, a fiberglass nozzle or a component for producing or processing glass made of a platinum composition of this kind and to a method for the production of a platinum composition.

A method for the additive manufacturing of a component includes providing a powdered base material for a component, in particular a component for the hot gas path of a gas turbine, building up the component layer by layer on a building platform by fusing individual layers of the base material, and introducing an oxide dispersion strengthening into a region of the component to be additively manufactured by an oxidic additive, wherein the region is usually exposed to high thermomechanical loading during operation of the component.

A method of providing a particulate material from an at least substantially metallic and/or ceramic starting material, comprising the following steps: (a) generating the particulate material from the starting material by vaporizing the starting material by introducing energy, preferably radiation energy, in particular by means of at least one laser, into the starting material and subsequently at least partially condensing the vaporized starting material, b) collecting the particulate material in at least one receiving and/or transporting device, in particular at least one container, c) receiving, in particular storing, and/or transporting the particulate material in the receiving and/or transporting device and/or in a further receiving and/or transporting device such that it can be used for a subsequent process, in particular in a state of at least non-permanent passivation, and d) providing the particulate material for the subsequent process.