A method for producing a collector alloy comprising 25 to 100 wt % precious metal in total, comprising 0 to <97 wt % of the precious metal silver, 0 to 75 wt % of at least one precious metal selected from gold, platinum, rhodium and palladium, and 0 to 75 wt % of at least one non-precious metal selected from copper, iron, tin and nickel, or for producing pure silver, comprising the steps of: (1) providing precious metal sweeps; (2) providing a flux which, during collective melting with the refractory inorganic material from the precious metal sweeps provided in step (1); (3) collective melting of the materials provided in steps (1) and (2) at a temperature in the range of from 1300 to 1600° C., forming a melt comprising at least two phases of different densities arranged one above the other; and. (4) separating the upper phase and the lower phase.

A method for producing a collector alloy comprising 25 to 100 wt % precious metal in total, comprising 0 to <97 wt % of the precious metal silver, 0 to 75 wt % of at least one precious metal selected from gold, platinum, rhodium and palladium, and 0 to 75 wt % of at least one non-precious metal selected from copper, iron, tin and nickel, or for producing pure silver, comprising the steps of: (1) providing precious metal sweeps; (2) providing a flux which, during collective melting with the refractory inorganic material from the precious metal sweeps provided in step (1); (3) collective melting of the materials provided in steps (1) and (2) at a temperature in the range of from 1300 to 1600° C., forming a melt comprising at least two phases of different densities arranged one above the other; and. (4) separating the upper phase and the lower phase.

A 3D printed diamond/metal matrix composite material and a preparation method and application thereof are provided. The composite material includes core-shell doped diamond, a metal matrix, and an additive, where the core-shell doped diamond includes a core, a transition layer, a shell, a coating, a porous layer, and a modification layer. The preparation method includes: uniformly mixing the diamond, the metal matrix, and the additive and performing 3D printing according to a 3D CAD slice model to obtain the composite material designed by the model. The metal matrix and the diamond surface of the composite material are mainly metallurgically bound, which can improve the binding strength between the diamond and the metal matrix, thereby improving the use properties of the composite material and a diamond tool. The core-shell doped diamond has good ablation resistance, and can effectively avoid and reduce thermal damage to diamond in a 3D printing forming process.

The present application provides a composite material and a method for preparing the same. The present application can provide a composite material which comprises a metal foam and a polymer component and if necessary, further comprises a thermally conductive filler, and has other excellent physical properties such as impact resistance, processability and insulation properties while having excellent thermal conductivity.

The present application provides a composite material and a method for preparing the same. The present application can provide a composite material which comprises a metal foam and a polymer component and if necessary, further comprises a thermally conductive filler, and has other excellent physical properties such as impact resistance, processability and insulation properties while having excellent thermal conductivity.

A composite material including a metallic phase and plurality of particles dispersed in the metallic phase. The plurality of particles is a carbon-based material; the metallic phase contains a main element, a first element, and a second element; the coating layer of each of the plurality of particles is carbide of the second element. The main element is copper; the first element is a metallic element having a lower surface tension than copper; the second element is at least one selected from the group consisting of beryllium, silicon, titanium, chromium, zirconium, niobium, hafnium, and tantalum.

An electrical connector consists of a connector housing (10) and at least one electrical contact element (1). The connector housing (10) and/or the electrical contact element (1) have a lead content of <0.1 weight percent. A method for manufacturing a contact element from a blank which has a lead content of <0.1 weight percent, uses the following method steps: Loading the blank into a manufacturing machine; producing a pin region or a socket region for electrically contacting another, opposite contact element; producing a fixing region for fixing the contact element in an insulating body; producing a crimp region for electrically connecting a conductor to the contact element or finishing the crimp region if the blank has already been previously prepared on a different machine; and removing the finished contact element from the manufacturing machine.

Disclosed is a covering of a fan unit of an information handling system. The covering contains a bottom covering and a top covering. The bottom covering contains i) copper and an first aluminum alloy, or ii) 10 wt. % to 50 wt. % of a thermally conductive plastic, and 50 wt. % to 90 wt. % of a post-consumer-recycled (PCR) plastic and/or biodegradable plastic. The top covering contains copper and a second aluminum alloy. The bottom covering houses a motor and blades of a fan of the fan unit, the top covering abuts against the bottom covering, and the fan is positioned in a space formed between the bottom and top covering. Fan unit containing the covering, and an information handling system containing the fan unit is also disclosed.

Disclosed is a covering of a fan unit of an information handling system. The covering contains a bottom covering and a top covering. The bottom covering contains i) copper and an first aluminum alloy, or ii) 10 wt. % to 50 wt. % of a thermally conductive plastic, and 50 wt. % to 90 wt. % of a post-consumer-recycled (PCR) plastic and/or biodegradable plastic. The top covering contains copper and a second aluminum alloy. The bottom covering houses a motor and blades of a fan of the fan unit, the top covering abuts against the bottom covering, and the fan is positioned in a space formed between the bottom and top covering. Fan unit containing the covering, and an information handling system containing the fan unit is also disclosed.

In the production of an internal-tin-processed Nb.sub.3Sn superconducting wire, the present invention provides a Nb.sub.3Sn superconducting wire that is abundant in functionality, such as, the promotion of formation of a Nb.sub.3Sn layer, the mechanical strength of the superconducting filament (and an increase in interface resistance), the higher critical temperature (magnetic field), and the grain size reduction, and a method for producing it. A method for producing a Nb.sub.3Sn superconducting wire according to an embodiment of the present invention includes a step of providing a bar 10 that has a Sn insertion hole 12 provided in a central portion of the bar 10 and a plurality of Nb insertion holes 14 provided discretely along an outer peripheral surface of the Sn insertion hole 12, and that has an alloy composition being Cu-xZn-yM (x: 0.1 to 40 mass %, M=Ge, Ga, Mg, or Al, provided that, for Mg, x: 0 to 40 mass %), a step of mounting an alloy bar with an alloy composition of Sn-zQ (Q=Ti, Zr, or Hf) into the Sn insertion hole 12 and inserting Nb cores into the Nb insertion holes 14, a step of subjecting the bar 10 to diameter reduction processing to fabricate a Cu-xZn-yM/Nb/Sn-zQ composite multicore wire with a prescribed outer diameter, and a step of subjecting the composite multicore wire to Nb.sub.3Sn phase generation heat treatment.