The present invention relates to a method for manufacturing gold nanoparticles, including: (a) placing a gold (Au) target on a magnet cathode and injecting argon (Ar) gas to generate plasma; (b) discharging powder of a compound having an non-shared electron pair upwardly in parallel to a vertical rotation axis inside a stirrer, followed by circulating and agitating the same up and down; and (c) ejecting the gold particles and binding the same to the compound having the non-shared electron pair, as well as gold nanoparticles manufactured by the same.

The present invention relates to a method for obtaining gold nanoparticles bound to niacinamide through vacuum deposition, which is generally used to form a thin film, wherein niacinamide is used by circulating and agitating the same up and down under special conditions, so as to produce high purity gold nanoparticles in high yield.

Embodiments disclosed herein relate to the production of amorphous metals having compositions of iron, chromium, molybdenum, carbon and boron for usage in additive manufacturing, such as in layer-by-layer deposition to produce multi-functional parts. Such parts demonstrate ultra-high strength without sacrificing toughness and also maintain the amorphous structure of the materials during and after manufacturing processes. Two additive manufacturing techniques are provided: (1) the complete melting of amorphous powder and re-solidifying to amorphous structure to eliminate the formation of crystalline structure therein by controlling a heating source power and cooling rate without affecting previous deposited layers; and (2) partial melting of the outer surface of the amorphous powder, and solidifying powder particles with each-other without undergoing a complete melting stage. Amorphous alloy compositions have oxygen impurities in low concentration levels to optimize glass forming ability (GFA). Specific techniques of additive manufacturing include those based on lasers, electron beams and ultrasonic sources.

A system and method are presented for producing metallic core-shell particles. The system includes the housing having a hollow interior configured to receive and hold a molten metal input, a carrier fluid, and one or more reagents. The system also includes a shearing assembly positioned within the hollow interior of the housing. The shearing assembly is configured to, when the molten metal input, carrier fluid, and one or more reagents are held withing hollow interior and sealed within housing, shear the molten metal input into particles of an effective size so that a shell created on a surface of the particles via reaction with the one or more reagents prevents a core of the particles from solidifying when the particles are cooled to a temperature below a freezing temperature of the molten metal input.

The present invention relates to novel gold-platinum based bi-metallic nanocrystal suspensions that have nanocrystal surfaces that are substantially free from organic or other impurities or films associated with typical chemical reductants/stabilizers and/or raw materials used in nanoparticle formation processes. Specifically, the surfaces are “clean” relative to the surfaces of metal-based nanoparticles made using chemical reduction (and other) processes that require organic (or other) reductants and/or surfactants to grow (and/or suspend) metal nanoparticles from metal ions in a solution.

The invention includes novel electrochemical manufacturing apparatuses and techniques for making the bi-metallic nanocrystal suspensions. The techniques do not require the use or presence of chlorine ions/atoms and/or chlorides or chlorine-based materials for the manufacturing process/final suspension. The invention further includes pharmaceutical compositions thereof and the use of the bi-metallic nanocrystals or suspensions or colloids thereof for the treatment or prevention of diseases or conditions for which metal-based therapy is already known, including, for example, for cancerous diseases or conditions.

Provided is an Ir alloy wire, which is further improved in oxidation wear resistance while ensuring a Vickers hardness. The Ir alloy wire includes: 5 mass % to 30 mass % of Rh; and 0.5 mass % to 5 mass % of Ta, wherein an average value A for an aspect ratio (crystal grain length/crystal grain width) of a structure of the alloy wire in a range of a depth of 0.05 mm or less from a surface of the alloy wire satisfies 1≤A<6.

The invention includes apparatus and methods for instantiating precious metals in a nanoporous carbon powder.

A spark plug electrode with an electrode tip formed on an electrode base using an additive manufacturing process, such as a powder bed fusion technique. The spark plug electrode includes an electrode base, an electrode tip that is formed on the electrode base and includes a precious metal-based material, and a thermally resilient joint that is located between the electrode base and the electrode tip, wherein the electrode tip and the thermally resilient joint together include a number of laser deposition layers.

A spark plug electrode with an electrode tip formed on an electrode base using an additive manufacturing process, such as a powder bed fusion technique. The spark plug electrode includes an electrode base, an electrode tip that is formed on the electrode base and includes a precious metal-based material, and a thermally resilient joint that is located between the electrode base and the electrode tip, wherein the electrode tip and the thermally resilient joint together include a number of laser deposition layers.

A composite member includes: a substrate formed of a composite material containing a plurality of diamond grains and a metal phase; and a coating layer made of metal. The surface of the substrate includes a surface of the metal phase, and a protrusion formed of a part of at least one diamond grain of the diamond grains and protruding from the surface of the metal phase. In a plan view, the coating layer includes a metal coating portion, and a grain coating portion. A ratio of a thickness of the grain coating portion to a thickness of the metal coating portion is equal to or less than 0.80. The coating layer has a surface roughness as an arithmetic mean roughness Ra of less than 2.0 μm.

A composite member includes: a substrate formed of a composite material containing a plurality of diamond grains and a metal phase; and a coating layer made of metal. The surface of the substrate includes a surface of the metal phase, and a protrusion formed of a part of at least one diamond grain of the diamond grains and protruding from the surface of the metal phase. In a plan view, the coating layer includes a metal coating portion, and a grain coating portion. A ratio of a thickness of the grain coating portion to a thickness of the metal coating portion is equal to or less than 0.80. The coating layer has a surface roughness as an arithmetic mean roughness Ra of less than 2.0 μm.