A high-temperature component made of a refractory metal or a refractory metal alloy, includes a coating for increasing thermal emissivity. The coating is formed substantially of tungsten and rhenium, i.e. of at least 55 wt. % rhenium and at least 10 wt. % tungsten, and has a Re3W phase of at least 35 wt. %. A process for producing a high-temperature component having a coating for increasing thermal emissivity, is also provided.

A cemented carbide having an eta phase and a Ni—Al binder is provided. The binder includes intermetallic γ′-Ni.sub.3Al-precipitates embedded in a substitutional solid solution matrix including Al and Ni. Further, the cemented carbide has a surface zone free from eta phase. A method of making a cutting tool is also provided.

Articles prepared by additive manufacturing of preforms that are coated by electrodeposition of nanolaminate materials, and methods of their production are described.

Methods of forming microwires or nanowires, microwires or nanowires formed using the method, and electronic devices and semiconductor components including the wires. A method of forming a microwire or nanowire includes disposing a plurality of metal particles in a portion of a channel that is a nanochannel or a microchannel. The method includes etching the metal particles with an activation agent to form a flux that penetrates an additional portion of the channel. The flux includes an etching product of the activation agent and the metal particles. The method includes allowing the activation agent to at least partially evaporate to form a wire that is a microwire or a nanowire.

A method of manufacturing an extruded material of carbon nanotube reinforced aluminum matrix composite having improved corrosion resistance, and the extruded material manufactured thereby are proposed. The method may include manufacturing an extruded material comprising an aluminum-carbon nanotube composite material and forming a hard oxide film on the surface of the extruded material by anodizing the extruded material in a mixed solution of sulfuric acid and oxalic acid. The method can form a hard oxide film with excellent corrosion resistance, abrasion resistance, and insulation properties on the surface of a composite material (an extruded material of carbon nanotube reinforced aluminum matrix composite material), which is known to be difficult to conduct hard anodizing due to the difference in corrosion characteristics between materials and, accordingly, the usability of the composite material can be significantly improved.

A mirrored apparatus includes a substrate having a surface and including an additive manufactured aluminum and about 2 to about 30 weight % (wt. %) silicon. The mirrored apparatus also includes a finish layer arranged directly on the surface of the substrate. The finish layer includes a polished surface opposite the substrate. The mirrored apparatus further includes a reflective layer arranged on the polished surface of the finish layer.

A mirrored apparatus includes a substrate having a surface and including an additive manufactured aluminum and about 2 to about 30 weight % (wt. %) silicon. The mirrored apparatus also includes a finish layer arranged directly on the surface of the substrate. The finish layer includes a polished surface opposite the substrate. The mirrored apparatus further includes a reflective layer arranged on the polished surface of the finish layer.

An electrochemical cell is provided which includes a cathode, an anode, an electrolyte separator, and an anode current collector located on the anode. The anode is a three-dimensional (3D) porous anode including ionically conducting electrolyte strands and pores which extend through the anode from the anode current collector to the electrolyte separator. The anode also includes electronically conducting networks extending on sidewall surfaces of the pores from the anode current collector to the electrolyte separator.

An electrochemical cell is provided which includes a cathode, an anode, an electrolyte separator, and an anode current collector located on the anode. The anode is a three-dimensional (3D) porous anode including ionically conducting electrolyte strands and pores which extend through the anode from the anode current collector to the electrolyte separator. The anode also includes electronically conducting networks extending on sidewall surfaces of the pores from the anode current collector to the electrolyte separator.

The instant disclosure is directed to passivated silver nanoparticle coatings and methods of making the same. A method may comprise obtaining a substrate having a surface, exposing the surface to a plurality of silver nanoparticles, applying a nucleating agent to the silver nanoparticles to form a plurality of silver cores, and passivating the silver cores by applying a sulfidation agent to the silver cores to form silver sulfide shells around the silver cores, thereby forming a coating comprising a plurality of sulfidated silver nanoparticles having a core-shell structure. The method may be used to form a coating comprising a plurality of sulfidated silver nanoparticles having a core-shell structure.