83 results about "Liquid gallium" patented technology

The present invention provides high purity gallium preparing process, which includes the following steps: 1. heating cleaned and dried semispherical reaction container in a water bath, coating high purity liquid gallium of 5-10 g serving as seed crystal to the inner surface of the reaction container, adding molten coarse gallium product into the reaction container, solidifying 60-90 % of gallium in the controlled rate of 0.5-1.5 cu cm/min, and pouring out liquid gallium; and 2. repeating the step 1 with the obtained solid gallium as material for 3-5 times to obtain high purity gallium.

The invention provides a purification method for gallium, which comprises the following steps of pre-purification, freezing crystallization, pickling, and packaging, wherein in the pre-purification step, liquid gallium is put into single equipment containing pickling liquid for stirring reaction, ultrasonic vibration is adopted, and spongy gallium impurities are separated from the liquid gallium preliminarily; in the freezing crystallization step, the liquid gallium separated preliminarily is subjected to freezing crystallization treatment, and heavy metal impurities in the gallium are removed; in the pickling step, the gallium subjected to the freezing crystallization treatment is placed into the single equipment for heating and fusing, a pickling solution is added and stirred, and the gallium is separated from spongy gallium through the ultrasonic vibration after stirring; and in the packaging step, the gallium separated after the pickling step is completed is packaged. The purification method can better achieve a purification effect; the purification flow is simple; the purification method can be automatically controlled easily, and is safe, environment-friendly and power-saving; no special equipment is required; and the enterprise cost is lowered.

The invention provides a preparation method of gallium particles. The preparation method includes the steps: adding coolants to a container, so that forming a coolant layer in the container by the coolants; adding insulation agents to the container, so that forming an insulation agent layer on the coolant layer; adding liquid state gallium to a titrator; inserting a titration opening of the titrator into the insulation agent layer, enabling the liquid state gallium to flow out from the titrator, so that forming gallium drops on the titration opening by the liquid state gallium flowing out the titrator, the gallium drops break array the titration opening and flow the insulation agent layer and then enter into the coolant layer, then forming the gallium particles. According to the preparation method of the gallium particle, due to fact that operation is done, combination of the insulation agent and the coolant is adopted, the preparation method is capable of simplifying technologies, easy to operate, and quality of products is easy to observe, and particle diameters of the gallium particles are controllable, and uniformity is good.

The invention discloses a zinc ion battery liquid metal composite negative electrode and a preparation method and application thereof. The composite negative electrode comprises a zinc metal matrix and a liquid alloy layer, and the liquid alloy layer is arranged on the surface of the zinc metal matrix. The characteristic of low solubility of zinc metal in the liquid gallium-based alloy is utilized, the zinc metal can be used as an electrochemically inert liquid coating material, the liquid alloy layer is formed by coating the surface of the zinc metal matrix with the liquid gallium-based alloy, and zinc ion flow, close to the surface of the negative electrode, of electrolyte can be well homogenized. Meanwhile, zinc is in a saturated state in the liquid gallium-based alloy, so zinc in the circulation process finally uniformly nucleates and grows on the surface of the zinc metal matrix, and dendrites are prevented from being formed on the surface of the composite negative electrode. Meanwhile, by compounding with gallium and indium with high hydrogen evolution overpotential, the corrosion resistance of the composite zinc negative electrode can be improved, the problem of side reactions such as negative electrode corrosion hydrogen production in the zinc ion battery is relieved, the cycle life of the zinc ion battery is prolonged, and the use stability and safety of the battery are improved.

The invention relates to the technical field of electronic materials, in particular to magnetic liquid metal printing ink and a preparation method thereof. The magnetic liquid metal printing ink is formed by evenly mixing liquid metal and magnetic liquid, gallium alloy serves as the liquid metal, the liquid gallium alloy can increase magnetism of the printing ink, meanwhile good conductivity of the liquid metal is maintained, the melting point of the liquid metal is increased, the magnetic liquid is mainly composed of soft magnetic nano magnetic particles, and water, organic solvent, oil or a mixture of the water, the organic solvent and the oil are added to serve as a base solution, so that the printing and forming effect is improved, and an ink material is not prone to magnetization. The magnetic liquid metal printing ink is simple in preparation method, good in formability, low in cost and has wide application prospect.

The invention provides a method for obtaining the texture topography of alumina-based binary eutectic melt growth ceramic. The method comprises the following steps of: with a laser beam as a heating source and liquid gallium-indium-tin alloy as a cooling medium, respectively carrying out directional solidification on prefabticated members consisting of alumina and rare earth oxide; taking the vertical section and the cross section of each prefabticated member and performing conventional metallographical treatment; and carrying out surface metal spraying to finally obtain the texture topographies and the interface topographies of the alumina-based binary eutectic melt growth ceramic at different growth rates. In directional solidification, draw rate is 1mu m/s-10000 um m/s, and laser poweris 200W-1500W. By using the method, the obtained directional texture is quite different from a texture in a melting area and has no obvious texture transition area, and interface topography is preserved very well.

The present invention discloses an electrical control light valve apparatus having liquid gallium. The invention comprises the transparent glass as a substrate, ITO transparent conductive film as the electrodes, the liquid gallium as the valve located on the ITO transparent conductive film, and the partial-transparent glass is located on the top of the electrical control light valve apparatus.

The invention provides a device and a method for preparing high-purity gallium, aims at the problems of the existing high-purity gallium preparation technology and belongs to the fields of the preparation equipment and the preparation technology of the high-purity gallium. The device comprises an inner container, an outer container and a cover; the inner container is located inside the outer container; a cavity for cold water and hot water to circulate alternately is arranged between the inner container and the outer container; the drainage tube of the inner container extends out of the outer container via the drainage tube passing hole of the outer container; the inner container is hermetically connected with the outer container; the cover is fixed on the top of the device. The method comprises the following steps: putting coarse gallium into the inner container, introducing cooling water into the cavity between the inner container and the outer container to crystallize the gallium, when the solidification rate of the gallium is within the range of 90-97%, discharging the left liquid gallium and then introducing hot water to melt the gallium, next, introducing the cooling water, and repeating crystallization for 6-8 times to improve the purity, thereby obtaining the high-purity gallium of 6N or 7N. The application method of the device is simple and convenient to operate; the obtained gallium is high in purity and high in yield, and has favorable application prospect.

A neutron source includes a low atomic number element target that is bombarded by incident energetic particles to provide a neutron flux. The source receives a controlled flow of liquid gallium that cools the target. The energetic particles may be for example protons or deuterons and the target is housed in a moderator/reflector assembly. Advantageously, the liquid gallium provides improved heat transfer, smaller flow rates and reduced stress on the target in comparison to prior art liquid coolants.

The invention provides a movable hydrogen source preparation method, and relates to a metal material preparation method. The movable hydrogen source preparation method aims at solving the problems that a traditional hydrogen preparation technology is complicated, high in cost and low in production efficiency and potential safety hazard exists in transportation. The movable hydrogen source preparation method comprises the following steps: step one, fixing a metal aluminum sheet, and scrubbing the upper surface of the aluminum sheet by using an organic solvent; step two, preparing metallic gallium for later use: taking a right amount of metallic gallium and putting the metallic gallium in a beaker, heating the beaker till the metallic gallium is molten into liquid; step three, dumping liquid gallium in the step two onto the upper surface of the aluminum sheet, and heating the zone with the liquid gallium from the lower part of the aluminum sheet; step four, eliminating an oxidation film; step five, enabling a supersonic vibration device to closely contact with the aluminum sheet; step six, obtaining an aluminum-gallium alloy, to be specific, turning on the supersonic vibration device, so that the liquid gallium and the aluminum sheet mechanically vibrate together with the end of a supersonic tool head, and the liquid gallium enters the aluminum sheet, thereby obtaining the aluminum-gallium alloy with the uniform microstructure; and step seven, obtaining hydrogen. The movable hydrogen source preparation method is used for preparing hydrogen.

The invention discloses an electrode lead wire used in the process of gallium metal electrolysis, which is made of solid gallium metal, wherein a lead wire of the solid gallium metal is provided with a cooling device which is a cooling fluid circulating cooling device. The design uses the solid gallium metal as the lead wire of a liquid gallium electrode to solve the problem that the liquid gallium erodes various metal material lead wires; and with the solid gallium metal lead wire, the pollution caused by nickel to refined gallium is thoroughly eliminated. While greatly improving the electrolysis refining effect, the electrode lead wire greatly reduces the production cost and reduces the consumption of noble metals such as platinum.

The invention provides a method for improving corrosion resistance and coercive force of a sintered neodymium-iron-boron magnet, and belongs to the technical field of magnetic materials. The performance of the magnet is improved by adopting a method that the sintered neodymium-iron-boron magnet is soaked in a liquid gallium solution at a certain temperature. The method particularly comprises the steps that firstly a pretreated sintered neodymium-iron-boron magnet and moderate solid gallium are taken to be placed in a crucible, then the crucible is placed in a vacuum thermal treatment furnace to be heated, wherein the temperature is 400-600 DEG C, the time is 0.5-1 hour, then after the thermal treatment is completed, the crucible is taken out and heated in the air until the temperature is 30 DEG C, then the magnet is taken out from the melted gallium. The corrosion resistance and coercive force of the treated magnet are improved.

The invention relates to the technical field of semiconductors, and discloses a hydride vapor phase epitaxy gallium boat structure which comprises a boat body, and further comprises a gallium source inlet formed in the top of the boat body. A liquid gallium source is contained in the boat body. A reactant outlet pipeline arranged in the boat body, the top end of thereactant outlet pipeline is higher than the liquid level of theliquid gallium source, the bottom end of the reactant outlet pipeline penetrates out of the bottom wall of the boat body; a gas distribution disc is also arranged on thebottom wall in the boat body, a hydrogen chloride inlet is formed in the side face of the gas distribution disc, at least one hydrogen chloride outlet is formed in the top end of a pipeline of the gas distribution disc, and each hydrogen chloride outlet is located below the liquid level of the liquid gallium source. The gallium boat structure has the advantages that the hydrogen chloride conversion rate is high, the contact area of hydrogen chloride and a liquid gallium source is large, and the hydrogen chloride path is effectively prolonged.

The invention provides a magnetic fluid power generator system for wind power generation, which comprises a wind impeller and a magnetic fluid power generator, wherein the magnetic fluid power generator comprises a magnet capable of generating a magnetic field, magnetic conductive fluid, a fluid passage and a control system; and the magnetic conductive fluid of the magnetic fluid power generator can be liquid metal such as liquid gallium or alloy of gallium. The power generator system adopts a novel magnetic fluid power generator as a core component for converting the wind energy into the electric energy and simultaneously eliminates a heavy gear box structure, so that the weight of the power generator system is lightened, the power generation efficiency and the operating reliability of the entire magnetic fluid power generator system are greatly improved, and the power of the wind power generator is favor of being improved to dozens to hundreds of Class MW (Million watts). Therefore, the magnetic fluid power generator system has huge potential of application development.

The invention discloses a flexible antenna array based on microwave energy transmission. The flexible antenna array comprises a dielectric substrate, a patch array and an equivalent grounding plate layer. One surface of the dielectric substrate is fixedly connected with the patch array, and the other surface of the dielectric substrate is fixedly connected with the equivalent grounding plate layer. A liquid metal antenna which works at 2.45 GHZ and is used for microwave energy transmission is printed by applying a liquid metal printing technology and a flexible material. The liquid metal patch antenna gives full play to the advantages of repairability, flexibility, reconfigurability, fatigue resistance, corrosion resistance and the like of the liquid gallium indium metal and the flexible dielectric substrate, is applied to integrated small-sized electronic equipment, realizes receiving and transmitting of electromagnetic waves, is applied to long-distance energy wireless transmission, and overcomes the disadvantage of low unit energy collection and conversion efficiency of a traditional antenna.

One or more embodiments of the invention provide a glow discharge mass spectrometry high-purity gallium testing method, which comprises the following steps: heating solid gallium to obtain liquid gallium, cleaning a polytetrafluoroethylene mold, air-drying, putting the polytetrafluoroethylene mold on a cooling device, pouring the liquid gallium into the polytetrafluoroethylene mold placed on the cooling device, transferring the polytetrafluoroethylene mold into an ultra-clean bench within a set time, standing until a formed sample is obtained, fixing the formed sample, charging the sample into a GDMS sample chamber, vacuumizing, cooling the sample in a semiconductor refrigeration mode, discharging within the set time, and removing surface pollution through discharge sputtering; after the signal is stable, collecting and analyzing data are through the GDMS, and after the analysis is finished, recording and storing the data, so that the purpose that the plane to be measured can be obtained through a form conversion mode for low-melting-point metal such as gallium and indium for measurement is achieved.

The invention discloses an aluminum ion battery using liquid metal gallium as a negative electrode, which belongs to the field of electrochemical batteries. The battery is characterized by comprising a liquid gallium negative electrode with the purity of 99.9% to 99.999%, a positive electrode, an aluminum chloride and inorganic acid salt electrolyte and a separator selected according to specific situations. The liquid metal gallium is directly placed on the bottom layer of the battery as a negative electrode or placed in a crucible as a negative electrode. A solid conductive material is used as the lead of the liquid gallium negative electrode. During the charging process, aluminum ions are reduced to aluminum atoms on the surface of the liquid gallium negative electrode and dissolved and diffused into the liquid gallium body phase. During the discharging process, the aluminum atoms dissolved in the liquid gallium are diffused to the surface of the gallium and are oxidized to the aluminum ions to enter the electrolyte. The charging and discharging voltage range is 0.1 to 2.4 V, and the current density range is 0.01 to 10 Ag<-1>. The liquid gallium negative electrode adopted in the invention has the characteristics of corrosion resistance, inhibition of Al dendrites and recycling. The aluminum ion battery based on the negative electrode has the advantages of long cycle life, high energy density, safety and stability, and can be used for large-scale energy storage or automobile power batteries.

The invention discloses a preparation method of a surface enhanced Raman scattering substrate. The method comprises the following specific steps: depositing metal gallium with an equivalent thicknessof 100 nanometers on the surface of a cleaned silicon wafer by using an electron beam evaporation technology, wherein the substrate temperature is 50 DEG C, and the vacuum degree is 4x10<-4>PA; placing a sample into a muffle furnace after the deposition, and annealing in an air atmosphere at the annealing temperature 400 to 500 DEG C for 4 to 5 minutes, wherein after the reaction, a large number of solid nanoscale gallium oxide particles are grown on the surface of the silicon wafer; and then depositing a layer of silver, gold or copper film on the surface by heat evaporation or ion sputteringto obtain a rough metal surface which can be used as the surface enhanced Raman scattering substrate. According to the preparation method, the non-infiltration characteristic of liquid gallium on thesilicon wafer is used for preparing a template with a rough surface, and the surface roughness can be changed by changing the deposition parameters of gallium or annealing conditions, thus changing the surface enhanced Raman scattering effect of the substrate.

Radioisotopes are produced by irradiating enriched stable isotopes in a particle accelerator target assembly with a beam of protons, deuterons, or other charged particles exhibiting sufficient incident energy and current to induce a nuclear reaction. The target assembly receives a recirculating flow of liquid gallium to remove heat flux that would damage the target assembly when operated with high intensity beam currents. The choice of liquid gallium and its eutectic alloys, all liquids at room temperature, over prior art working fluids for the coolant system is advantageous by providing significantly increased heat transfer to prevent target damage, minimizing enriched material losses, thereby decreasing production costs, and realizing greater radioisotope output.