This disclosure describes various configurations and components for bimetallic and trimetallic claddings for use as a wall element separating nuclear material from an external environment. The cladding materials are suitable for use as cladding for nuclear fuel elements, particularly for fuel elements that will be exposed to sodium or other coolants or environments with a propensity to react with the nuclear fuel.

In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.

In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.

A radiopaque composite wire for medical applications has a core comprising a rare earth metal, an outer layer comprising a nickel-titanium alloy disposed over the core, and a controlled diffusion zone between the core and the outer layer. The controlled diffusion zone includes at least one compound phase comprising (a) the rare earth metal and (b) nickel and/or titanium.

A method for preparing graphene/silver composite material is provided. A reduction agent and silver nitrate are added successively into a graphene oxide solution; silver powder obtained by reduction is directly combined with graphene oxide in the solution, so as to preliminarily obtain graphene oxide/silver composite powder; graphene/silver composite powder is then obtained through drying and reducing; a graphene/silver composite block material, a graphene/silver composite wire material and a graphene/silver composite belt material are able to be obtained by powder metallurgy, hot-extruding and rolling techniques. According to the composite material of the present invention, graphene is dispersed uniformly, and interface bonding between a matrix and an enhanced body is sufficient, leading to excellent physical performance of the composite material. Meanwhile, the method of the present invention is simple and processes are easy to control, which is conducive to large-scale production and application.

A method for preparing graphene/silver composite material is provided. A reduction agent and silver nitrate are added successively into a graphene oxide solution; silver powder obtained by reduction is directly combined with graphene oxide in the solution, so as to preliminarily obtain graphene oxide/silver composite powder; graphene/silver composite powder is then obtained through drying and reducing; a graphene/silver composite block material, a graphene/silver composite wire material and a graphene/silver composite belt material are able to be obtained by powder metallurgy, hot-extruding and rolling techniques. According to the composite material of the present invention, graphene is dispersed uniformly, and interface bonding between a matrix and an enhanced body is sufficient, leading to excellent physical performance of the composite material. Meanwhile, the method of the present invention is simple and processes are easy to control, which is conducive to large-scale production and application.

A method for making a tube is described in which a multi-layer billet is extruded to provide a tube having a wall comprising an inner layer metallurgically bonded to an outer layer.

A method for making a tube is described in which a multi-layer billet is extruded to provide a tube having a wall comprising an inner layer metallurgically bonded to an outer layer.

A cable has a wire bundle composed of a number of individual wires and an insulating sheath. The wire bundle is guided along a longitudinal center axis by a shaping element in order to guide and to specify the cross-sectional shape of the wire bundle in a feeding region immediately upstream of an extruder. The shaping element rotates about the longitudinal center axis, and the insulating sheath is subsequently applied to the wire bundle by the extruder.

A metal alloy for use in a wire included in an electrochemical cell is disclosed having an amorphous structure, microcrystalline grains, or grains that are sized less than about one micron. In various embodiments, the microcrystalline grains are not generally longitudinally oriented, are variably oriented, or are randomly oriented. In some embodiments, the microcrystalline grains lack uniform grain size or are variably sized. In some embodiments, the microcrystalline grains have an average grain size of less than or equal to 5 microns. In some embodiments, the metal alloy lacks long-range crystalline order among the microcrystalline grains. In some embodiments, the wire is used in a substrate used in the electrochemical cell. In some embodiments, the metal alloy is formed using a co-extrusion process comprising warming up the metallic alloy and applying pressure and simultaneously passing a core material through a die to obtain a composite structure.