6results about How to "Guaranteed diffusion" patented technology

The utility model discloses an induction heating type chip welding device, and relates to the technical field of chip welding. The device comprises a tool jig, wherein the tool jig is fixedly connected with a supporting rod for placing a chip through a placing cavity formed in the tool jig; the welding part comprises two hot-pressing seats, the two hot-pressing seats are symmetrically distributed by taking the tool jig as a center, one end, close to the tool jig, of each hot-pressing seat is fixedly connected with a heat conduction block, and a heat insulation plate is fixedly mounted on the outer surface of each hot-pressing seat. The utility model can effectively solve the problems in the prior art that no definite time sequence control exists in the heating and pressure applying process, the heating block starts to dissipate heat when approaching the chip, so that the welding flux is melted in advance when the pressure is not applied, the welding flux is oxidized, sheetted or bridged, and if the pressure is firstly applied and then the heating is performed, the welding flux cannot be heated. And the problem that the chip packaging material is deformed due to overlong pressure duration time is solved.

The invention discloses an ultra-wideband wireless ad hoc network construction method based on TDMA and DSDV and ad hoc network node equipment, and belongs to the field of wireless communication. The problems that an existing UWB ad hoc network is high in data transmission failure rate, and real-time communication is difficult to meet are solved. The method comprises the following steps: configuring network parameters; a communication period is divided into a synchronization frame, a routing frame and at least one data subframe, and communication time slots are distributed for nodes in a network based on a TDMA protocol; in the synchronization frame, a specified node broadcasts a synchronization packet containing a period starting point timestamp, and other nodes receive the synchronization packet and calibrate a local clock according to the synchronization packet; in the routing frame, each node broadcasts the DSDV routing table in the distributed time slot, and the neighbor node receives the DSDV routing table and updates the own routing table according to the serial number and the hop count; and in the data sub-frame, each node performs data transmission in the allocated time slot based on the updated routing table, and a verification mechanism is adopted to ensure the data integrity. The method is used in the high-speed stable data transmission field.

This invention relates to the field of secondary batteries, specifically, to providing an organic electrolyte for sodium-ion batteries, a preparation method thereof, and its application in sodium-ion batteries. The electrolyte for sodium-ion batteries comprises sodium salts, organic solvents, and additives, wherein the additives include nitrile compounds, sulfonates, and organic sodium salts; this electrolyte can generate a dense SEI layer rich in various inorganic elements, ensuring the sodium... + The rapid diffusion of ions, combined with a suitable reduction in the organic content of the SEI, improves the stability of the SEI during long-term cycling. Compared to sodium-ion batteries assembled using phosphate materials as the positive electrode active material, the capacity retention rate is greater than 80% after 1000 cycles at 1C rate.

This invention provides a vacuum drying device for water-soluble inorganic salt carriers, relating to the field of water-soluble inorganic salt carrier drying technology. It includes a drying chamber and a drying drum. A vacuum pump is located at the back of the drying chamber, and a connecting pipe is fixedly installed on the top of the vacuum pump, with the output end of the connecting pipe connected to the interior of the drying chamber. A mounting frame is fixedly installed on the top of the drying drum. In this invention, the air inside the drying chamber is extracted by the vacuum pump and connecting pipe. Then, a controller activates two heating tube assemblies, which, with the assistance of temperature sensors, heat the interior to the required temperature. Next, the controller activates a drive motor, which drives a drive rod and multiple stirring blades to stir the material, ensuring uniform heating and moisture diffusion within the drying drum, thus ensuring thorough drying and improving the vacuum drying effect on water-soluble inorganic salt carriers.

The utility model belongs to the technical field of plasma deposition, and discloses an auxiliary device utilizing a microwave deposition plasma source, which comprises a vacuum furnace body and an auxiliary plasma source, the inner cavity of the vacuum furnace body is cylindrical, a rotating stand for placing a workpiece is arranged in the vacuum furnace body, the auxiliary plasma source is connected with the vacuum furnace body, and the rotating stand is connected with the vacuum furnace body. The auxiliary plasma source comprises a waveguide tube, energy of the waveguide tube is injected from the left side, the right side of the waveguide tube is connected with the reflection matching network, quartz glass for isolating the normal-pressure waveguide and the vacuum cavity is arranged above the waveguide tube, and perturbators for adjusting the size of the microwave waveguide are arranged on the inner side of the waveguide tube and the position of a quartz glass window. By arranging the auxiliary plasma source and the perturbator, the scattering proportion and the scattering direction of waveguide energy to the vacuum cavity can be increased, and the uniformity of the whole coating can be ensured by matching with the rotating stand in the vacuum furnace body.

This invention relates to a high-performance samarium-cobalt magnet and its preparation method, belonging to the field of magnet technology. This invention discloses a high-performance samarium-cobalt magnet, wherein the samarium-cobalt magnet is composed of a surface coated with N... y H z Sm layer (1‑x) M x (Co a Fe b Cu c Zr d ) e The magnet is made of magnetic powder material, wherein 0 ≤ x < 1, 0 ≤ a ≤ 1, 0 < b < 1, 0 < c < 1, 0 < d < 1, and 4.5 ≤ e ≤ 9. This invention also discloses a method for preparing a high-magnetic-performance samarium-cobalt magnet, the method comprising: mixing raw materials according to elemental ratios, and performing alloy melting using vacuum induction melting technology to obtain Sm... (1‑x) M x (Co a Fe b Cu c Zr d ) e Casting ingots; obtaining magnetic powder from the ingots through coarse crushing; then uniformly coating the surface of the magnetic powder with N. y H z Then, the mixed powder is post-processed to obtain a samarium cobalt magnet with high magnetic properties.