26 results about "Gallium alloy" patented technology

The present application relates to the technical field of flexible sensing, in particular to a flexible temperature sensor and a preparation method thereof. The flexible temperature sensor provided by the present application comprises a base film, a sensing material electrode embedded in the base film, and a packaging layer. The sensing material electrode is a silver-gallium alloy. The sensing electrode of the flexible temperature sensor provided by the present application is almost completely embedded in the base film, which can be better combined with the base to improve the mechanical properties and measurement stability of the flexible sensor. Meanwhile, the embedded base type flexible temperature sensor has a simple structure and can be prepared in a large area at a low cost.

A latent heat storage body microcapsule includes a core including gallium or gallium alloy; and a shell covering the core and including gallium oxide. A method for producing the same includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a water treatment step of heating the particles in distilled water to form a gallium hydrate on a surface of each of the particles; and an oxidation treatment step of oxidizing the gallium hydrate to form a shell including gallium oxide. The method includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a cooling step of cooling the particles to a solid state; and a pH treatment step of immersing the particles in an aqueous solution having a predetermined pH to form a shell including gallium hydrate.

The application discloses a method for preparing holmium-gallium alloy based on fused salt electrolysis, and a product and application thereof, and comprises the following steps: S1, preparing purified lithium chloride-potassium chloride fused salt; S2, heating the purified eutectic fused salt to an electrolysis temperature and keeping constant temperature, setting liquid metal gallium as a working electrode, setting high-purity graphite rod as a counter electrode, setting Ag / AgCl as a reference electrode, adding holmium chloride into the molten fused salt, and the added mass of the holmium chloride is 2%-4% of the total mass of the fused salt; S3, maintaining the electrolysis temperature unchanged, setting the electrolysis potential and time required by the electrolysis experiment, and ensuring that holmium ions are reduced on the surface of the liquid gallium cathode and alloying reaction occurs during the electrolysis process; S4, after the electrolysis is completed, power is cut off, the electrolysis device is naturally cooled to room temperature, the cathode alloy product is collected after standing and layering, and the holmium-gallium alloy is obtained after washing and drying treatment. The application realizes efficient, stable and controllable preparation of the holmium-gallium alloy.

The invention relates to a preparation method of a gold-doped iron-gallium alloy magnetostrictive material and the material, in the method, raw materials are smelted to prepare a magnetostrictive ingot, the raw materials meet the following expression: (Fe < 0.83 > Ga < 0.17 >) < 100-x > Aux, x is atomic percent, and x is greater than or equal to 0.2 and less than or equal to 1.0; and the magnetostrictive ingot material is subjected to homogenization treatment, and the gold-doped iron-gallium alloy magnetostrictive material is prepared. The gold element with extremely low solid solubility is added into the FeGa alloy, and a magnetic domain is pinned, so that the magnetostrictive property of the FeGa alloy is kept stable in a service environment higher than room temperature.

The invention provides an alloy negative electrode material applicable to low external pressure, a preparation method and an all-solid-state lithium battery, and relates to the technical field of solid-state lithium batteries. The alloy negative electrode comprises an amorphous lithium-gallium alloy phase and amorphous lithium-silicon alloy particles, wherein the amorphous lithium-silicon alloy particles are dispersed in the amorphous lithium-gallium alloy. The alloy negative electrode is suitable for a solid-state lithium battery with low external pressure (1t, 10MPa) and high surface capacity, and can stably circulate more than 500 circles when being charged and discharged under the conditions of low np ratio and high current density, and lithium dendrites do not grow on the surface of the negative electrode.

The application is suitable for the field of material preparation, and provides a copper-gallium alloy electrode preparation method and application in the field of electrocatalysis.The copper-gallium alloy electrode preparation method comprises the following steps: step 1: immersing foamed copper and gallium-indium liquid alloy into an aqueous solution of sodium hydroxide, and keeping the two in contact; step 2: introducing direct current into the system composed of foamed copper, gallium-indium liquid alloy and aqueous solution of sodium hydroxide; step 3: ultrasonicating the foamed copper obtained in step 2; and step 4: treating the foamed copper obtained in step 3 at a constant potential for a certain time.The application forms a dense copper-gallium alloy layer on the surface of foamed copper by means of infiltration reaction-physical removal-electrochemical removal, using foamed copper and gallium-indium liquid alloy as raw materials.The copper-gallium alloy electrode prepared by the application has excellent electrocatalytic nitrate reduction performance, and the ammonia yield reaches 10 mg / h.

Provided is a curable organopolysiloxane composition containing a thermally conductive material that is uniformly dispersed in the state of fine particles in a matrix comprised of a resin component, where the composition can then be turned into a cured product exhibiting no cracks or voids when the product is cured. The composition contains (A) an organopolysiloxane having at least two silicon atom-bonded alkenyl groups per each molecule, said organopolysiloxane being liquid at 25° C., (B) an organohydrogenpolysiloxane having a silicon atom-bonded hydrogen atom, (C) gallium and / or a gallium alloy having a melting point of −20 to 70° C., (D) a thermally conductive filler having an average particle diameter of 0.1 to 30 m, and (E) a platinum group metal catalyst, wherein the gallium and / or the gallium alloy (C) is in the form of particles dispersed in the organopolysiloxane and exhibits a solidifying point of −40° C. or lower.

The application provides a preparation method of a copper-gallium target material, comprising the following steps: taking high-purity copper blocks and high-purity gallium as raw materials to perform vacuum smelting, the content of gallium in the raw materials is 35-55 wt.%, after the smelting is completed, the copper-gallium alloy is obtained by casting into a mold and cooling; the temperature of the vacuum smelting is 800-900 DEG C; the copper-gallium alloy is sprayed to prepare powder, and the copper-gallium alloy powder is obtained; the copper-gallium alloy powder is subjected to hot isostatic pressing and cooling, and the copper-gallium target material is obtained. The copper-gallium target material with high density and good uniformity of components is prepared by the following steps: first, a high-gallium copper-gallium alloy is prepared by using a vacuum casting method, then, alloy powder is prepared by using a gas spraying method, and finally, the copper-gallium target material is prepared by hot isostatic pressing sintering and annealing.

The invention relates to a preparation method of a platinum-tungsten-gallium alloy. Platinum-tungsten-gallium alloy plates, bars and wires are successfully prepared through the processes of electric arc melting, vacuum suction casting, hot rolling, cold drawing and the like. The platinum-tungsten-gallium alloy is high in hardness, bright in surface and non-stick to a cutter during turning, and is an excellent platinum jewelry material.

A latent heat storage body microcapsule includes a core including gallium or gallium alloy; and a shell covering the core and including gallium oxide. A method for producing the same includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a water treatment step of heating the particles in distilled water to form a gallium hydrate on a surface of each of the particles; and an oxidation treatment step of oxidizing the gallium hydrate to form a shell including gallium oxide. The method includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a cooling step of cooling the particles to a solid state; and a pH treatment step of immersing the particles in an aqueous solution having a predetermined pH to form a shell including gallium hydrate.

The application discloses a low-melting-point alloy etching enhanced polishing tool and a preparation method thereof. The polishing tool is composed of a low-melting-point gallium alloy, fine abrasive grains and a pore agent. The gallium alloy is a binder phase of the polishing tool and also an etching phase material of a processed material. The gallium alloy used is a series of gallium alloys containing gallium and indium, and the melting point of the gallium alloy is 30 DEG C to 250 DEG C. During polishing processing, the low-melting-point alloy in the tool etches the processed material, and the etching effect and the abrasive grain cutting effect are combined to realize high-efficiency and high-quality processing. The shape of the tool is determined according to the requirements of a processed part. The application is used for polishing and grinding processing of glass, aluminum and other metals, alloys and metal compounds which are easily etched by gallium, and waste liquid is not generated during the processing, so that high-efficiency and high-quality grinding and polishing processing can be realized.

To provide a composition containing gallium (Ga) or a gallium alloy and a thermally conductive ceramic filler that exhibits excellent operability and workability. [Solution] A composition comprising (A) Ga or a Ga alloy, (B) a thermally conductive ceramic filler, and (C) a metal powder having a melting point of 900°C or higher.

The application discloses a kind of fire material evidence transportation violence sorting and high temperature early warning flexible material preparation method, belong to judicial material evidence circulation field and logistics transportation field, comprising: step 1: indium-gallium alloy liquid metal is added to container, pour into ethanol aqueous solution, fully stir, drop into dopamine hydrochloride solution, adjust pH value to 7.5~9.0, stir at room temperature;Dropping into acetone settlement to reaction liquid, centrifugal, filtration, filter cake is washed after stirring with acetone and natural drying, obtain polydopamine coated liquid metal;Step 2: take (4-vinylphenyl) dimethyl silane, acrylic acid ester group p-benzoic acid, 1-vinyl-3-butyl imidazole hexafluorophosphate, dissolved in dichloromethane to make solution, add photoinitiator Irgacure-2959, add polydopamine coated liquid metal, material is fully stirred after pouring into polytetrafluoroethylene mold, under 650W ultraviolet lamp, light initiation polymerization, solvent is dried to constant weight, obtain fire material evidence transportation violence sorting and high temperature early warning flexible material.

This invention belongs to the field of catalyst preparation technology, and provides a cobalt-gallium alloy catalyst for the hydrodeoxygenation of guaiacol to cyclohexanol, its preparation method, and its application. The preparation method includes the following steps: First, a mixed metal salt solution of cobalt and gallium sources is prepared, then carbon nanotubes are added, and the mixture is ultrasonically dispersed and refluxed. After the reaction, the catalyst is dried and reduced to obtain the catalyst CoGa / CNTs. Then, the CoGa / CNTs are mixed with an organophosphoric acid ligand solution and reacted at room temperature to obtain the organophosphonic acid ligand-modified carbon nanotube supported cobalt-gallium alloy catalyst R-PA@CoGa / CNTs. Applying the prepared catalyst R-PA@CoGa / CNTs to the hydrodeoxygenation of guaiacol to cyclohexanol achieves excellent guaiacol yield under milder reaction conditions and with a lower active metal content.

The invention discloses a dry recovery method for waste indium-gallium targets, which comprises the following steps of: crushing the waste indium-gallium targets to obtain waste target particles; the waste target particles and a carbonaceous reducing agent are mixed and added into a reduction furnace to be subjected to a carbon thermal reduction reaction, liquid indium gallium alloy is obtained, then a sodium hydroxide solution is added to be stirred and precipitated, then solid-liquid separation is conducted, a sodium gallate solution and indium-rich metal are obtained, the indium-rich metal is subjected to electrolytic refining, and high-purity refined indium is obtained; the sodium gallate solution is subjected to acidification, impurity removal and hydrolytic precipitation, and gallium hydroxide powder is obtained. The indium-gallium alloy is directly obtained through the carbon thermal reduction reaction, so that metal loss caused by multi-step leaching, separation, replacement and other processes in a wet process is avoided, and the recovery rate is increased; a large amount of strong acid, strong base and organic extractant are not needed, the auxiliary material consumption is small, the price is low, wastewater discharge is reduced, and the recovery cost is reduced; liquid indium gallium alloy passes through the liquid outlet in the bottom of the reduction furnace, full-continuous or semi-continuous batch production is achieved, and the recovery efficiency is high.

The invention discloses a tin-doped gallium nitride homojunction, a preparation method of the tin-doped gallium nitride homojunction and application of the tin-doped gallium nitride homojunction in beta-ray detection, and belongs to the technical field of semiconductor film materials. According to the method, the gallium oxide thin film is formed on the substrate through blade coating of the liquid gallium, then the tin-doped gallium oxide thin film is formed on the substrate through blade coating of the liquid tin-gallium alloy, and finally the tin-doped gallium nitride homojunction is obtained through nitriding treatment. The preparation process is simple, expensive equipment is not needed, the cost is low, when the prepared homojunction is used for a beta-ray detector, through electrode deposition and device packaging, the dark current can be remarkably reduced, the detection sensitivity to low-energy beta rays is improved, the response is rapid, the recovery time is short, the anti-radiation capability is high, the stability is excellent, stable work under the normal temperature condition can be achieved, and the application range is wide. And the application range is expanded.

The invention discloses a preparation method of a gallium-rich alloy material based on liquid metal surface segregation, gallium-rich alloy particles are obtained through a physical mixing-high-temperature alloying-electrochemical separation technology, and the method comprises the steps that active metal powder and liquid metal gallium are mixed and react at high temperature to form a solid alloy phase; and then the internal alloy is controllably driven to be segregated outwards rapidly through an electrochemical means, and separation of a solid alloy phase and a liquid gallium phase is achieved. The alloy obtained through separation is an alloy phase rich in gallium and is in a granular shape, and gallium and active metal elements are evenly distributed on particles. The method is simple in process, high in process controllability and applicable to preparation and separation of various gallium-rich active alloys.

A thermal conductive silicone composition includes (A) 100 parts by mass of an organopolysiloxane having a kinematic viscosity at 25° C. of 10 to 500,000 mm2 / s; (B) 10 to 2,000 parts by mass of a thermal conductive filler having an average particle size of 0.01 to 100 μm; and (C) 1,000 to 10,000 parts by mass of gallium or a gallium alloy having a melting point of −20 to 100° C. The resulting thermal conductive silicone composition has excellent thermal conduction property.

The present disclosure provides a solid-state battery with high cycle characteristics. In the solid-state battery of the present disclosure, a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, and a negative electrode current collector layer are laminated in this order. The negative electrode active material layer of the solid-state battery of the present disclosure comprises a gallium-based layer containing gallium or lithium-gallium alloy, and a magnesium-based layer containing magnesium or lithium-magnesium alloy. The gallium-based layer is arranged on the side of the solid electrolyte layer, and the magnesium-based layer is arranged on the side of the negative electrolyte layer.

To provide a thermally conductive silicone composition containing a low melting point metal, which has excellent adhesion to a base material after curing and becomes a cured product having good thermal conductivity.SOLUTION: (B) an organohydrogenpolysiloxane, (C) gallium and / or gallium alloys having melting points of - 20 to 70 °C., (D-1) a thermally conductive filler having a mean particle size of 20 to 200 μ m, (D-2) a thermally conductive filler having a mean particle size of 0.1 to 10 μ m, (E) a platinum group metal catalyst, (F) a reaction-controlling agent, and (G) a palladium powder. 000mm2, (H) an organopolysiloxane capped at one end of the molecular chain with a hydrolyzable group and having a dynamic viscosity at 25 °C of 10 to 10 000mm2 / s.SELECTED DRAWING: None

A friction heat micro-fusion penetration modified polishing method is characterized by comprising the following steps that (1) firstly, a penetration modified reinforced phase is added into a polishing solution, the penetration modified reinforced phase is gallium or gallium-indium, gallium-tin or gallium-indium-tin gallium-containing series alloy with the melting point being 20-300 DEG C, the penetration modified reinforced phase is evenly dispersed in the polishing solution, and the particle size ranges from 100 nm to 20 microns; during grinding or polishing, the hard abrasive particles and a workpiece are subjected to micro-cutting action to generate friction heat, and the heat is transferred to the low-melting-point gallium alloy to enable the low-melting-point gallium alloy to be subjected to micro-melting on a friction interface; (2) the gallium alloy in the polishing solution is slightly molten and then locally infiltrates the surface of the aluminum-containing workpiece, metal gallium in the molten low-melting-point alloy permeates into an aluminum grain boundary and diffuses along the grain boundary, intergranular cracks are generated on a material of a friction interface and are modified, and a modified layer which is relatively easy to remove is generated on the outermost layer of the workpiece; and (3) the cutting effect of the hard abrasive particles and the penetration modification effect of the molten alloy are synergistically and alternately carried out, and the workpiece is ground and polished with high quality and high efficiency. The machining efficiency is high, and the precision is good.

To provide a thermally conductive curable silicone composition that does not need to be stored frozen or refrigerated and does not require a heating process for curing, despite being a curable heat dissipation grease, and a method for curing the composition.　The thermally conductive curable silicone composition contains (A) an organopolysiloxane having a kinematic viscosity at 25°C of 60 to 100,000 mm2 / s and having no alkoxysilyl groups or silanol groups, (B) gallium or an alloy containing gallium having a melting point of -20 to 100°C, and (C) a metal alkoxide and / or a (partial) hydrolysis condensate thereof.

This composition contains (A) Ga or a Ga alloy, (B) a thermally conductive ceramic filler, and (C) a metal powder having a melting point of 900°C or higher.　The present invention makes it possible to provide a composition that contains gallium (Ga) or a Ga alloy and a thermally conductive ceramic filler, the composition having exceptional operability and workability.

The invention belongs to the field of germanium-gallium alloy, and particularly discloses a device for preparing germanium-gallium alloy, the germanium-gallium alloy and a preparation method of the germanium-gallium alloy. The device for preparing the germanium-gallium alloy comprises the smelting assembly and the cooling assembly, so that the germanium-gallium alloy raw materials are homogenously smelted under the inert gas atmosphere and electromagnetic stirring, the component uniformity is improved, and the oxidation degree of the germanium-gallium alloy raw materials is reduced; smelting and dripping working conditions are rapidly switched by regulating and controlling the movable rod piece, and the dripping speed and size of alloy melt liquid drops can be regulated and controlled by controlling internal air pressure and the hole diameter of the liquid flow hole, so that the cooling state of the alloy melt is controlled, and the purposes of maintaining consistency of alloy particle components, shapes and sizes and inhibiting component segregation are achieved; and all the procedures are continuously completed in the same closed space, intermediate transfer or secondary treatment is not needed, the preparation process is greatly shortened, the production efficiency is improved, and the pollution opportunity of the external environment to the alloy is also reduced.

The present invention is a heat-softenable thermally conductive silicone composition characterized by comprising components (A) to (E): (A) a phenyl-modified organopolysiloxane; (B) an organohydrogenpolysiloxane; (C) one or more selected from the group consisting of organopolysiloxanes having a hydrolyzable functional group and alkoxysilane compounds represented by general formula (2); (D) one or more selected from the group consisting of metallic gallium and gallium alloys having a melting point of 0 to 70°C; and (E) a platinum group metal catalyst. The present invention makes it possible to achieve excellent heat-softenability, reworkability and compressibility, and to realize low thermal resistance.

The application discloses a copper-gallium alloy, wherein the mass percentage of gallium in the copper-gallium alloy is 3% to 10%. The copper-gallium alloy can be used as a cathode electrode for electro-reducing carbon dioxide after being subjected to rapid electro-reduction treatment, and is used for preparing ethane. In the application, the addition of Ga element enables the copper alloy sheet to electrocatalytically reduce carbon dioxide to prepare ethane at a low potential, and a new technical route is provided for subsequent industrialization of electrocatalytic reduction of carbon dioxide.