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336 results about "Element composition" patented technology

Elements are composed of extremely small particles called atoms. An atom is the smallest part of an element that retains all the characteristics of the element. Atoms are composed of protons, neutrons, and electrons, which is composed of the basic building blocks of mater, leptons and quarks. .

Mass spectrum feeding device and mass spectrum detection equipment

The invention provides a mass spectrum feeding device and mass spectrum detection equipment with the mass spectrum feeding device. The device comprises a spraying device, a sealed cavity, a carrier gas pipeline, a transmission pipeline and an inductive coupling plasma source, wherein the spraying device comprises a feeding pipe, an auxiliary gas pathway and a nozzle, and the nozzle is formed in the sealed cavity; a carrier gas input opening connected with the carrier gas pipeline, an organic mass spectrum sampling interface and an inorganic mass spectrum sampling interface are formed in the sealed cavity; a to-be-detected liquid sample is atomized and ionized under the action of an electric field and an auxiliary airflow, the generated ions are analyzed and detected in a mass spectrometer through the organic mass spectrum sampling interface, and carrier gas input from the carrier gas input opening is used for sending out the sample remained in the sealed cavity through the inorganic mass spectrum sampling interface; and the sample is brought to the inductive coupling plasma source through the transmission pipeline, is atomized and ionized, and is subjected to element composition analysis through a mass spectrometer or a spectrometer. The feeding device can be used for detecting inorganic mass spectrum and organic mass spectrum in parallel.
Owner:SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV

Metal doping LiMn(1-x-y)NixCoyO2 compounded by lithium ion battery positive electrode waste, as well as preparation method and application of metal doping LiMn(1-x-y)NixCoyO2

The invention provides metal doping LiMn(1-x-y)NixCoyO2 compounded by lithium ion battery positive electrode waste, as well as a preparation method and an application of the metal doping LiMn(1-x-y)NixCoyO2. The method comprises the steps: removing a binder and a conductive agent from the lithium ion battery positive electrode waste so as to obtain a positive electrode active material; determining the element composition of the positive electrode active material; adjusting the content / contents of one or more of Ni, Co, Mn and M in the positive electrode active material, so as to enable a molar ratio to accord with the molar ratio of Ni to Co to Mn to M in the molecular formula LiNixMnyCo(1-x-y-z)MzO2 so as to obtain positive electrode active material precursor powder; and adding a lithium source, and performing high-temperature solid-phase reaction so as to obtain metal doping LiMn(1-x-y)NixCoyO2. The method is wide in application range, easy to operate, low in cost and capable of avoiding secondary pollution, and achieving the short-range cleaning circulation of the positive electrode active material in a waste lithium ion battery. The prepared metal doping LiMn(1-x-y)NixCoyO2 is excellent in electrochemical performance.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

Stable aqueous suspension liquid of finely divided diamond particles, metallic film containing diamond particles and method of producing the same

An aqueous suspension liquid of finely divided diamond particles comprising 0.05 to 160 parts by weight of a finely divided diamond particles in 1000 parts of water, wherein; (i) the finely divided diamond particles have an element composition consisting mainly of 72 to 89.5% by weight of carbon, 0.8 to 1.5% of hydrogen, 1.5 to 2.5% of nitrogen, and 10.5 to 25.0% of oxygen; (ii) and, almost all of said diamond particles are in the range of 2 nm to 50 nm in diameters thereof (80% or more by number average, 70% or more by weight average), (iii) and, said finely divided diamond particles exhibit a strongest peak of the intensity of the Bragg angle at 43.9° (2θ±2°), strong and characteristic peaks at 73.5° (2θ±2°)and 95° (2θ±2°), a warped halo at 17° (2θ±2°), and no peak at 26.5°, by X-ray diffraction (XRD) spectrum analysis using Cu—Kα radiation when dried, (iv) and, specific surface area of said diamond particles when dry state powder is not smaller than 1.50×105 m2/kg, and substantially all the surface carbon atoms of said particles are bonded with hetero atoms, and the total absorption space of said powder is 0.5 m3/kg or more, when dried. The diamond particles are very active and dispersible in aqueous liquid in stable, and have essentially same mechanical properties as that of usual diamonds.
Owner:NICCA CHEM COMPANY

Samarium and cobalt sintered permanent magnet material and preparation method thereof

A samarium and cobalt sintered permanent magnet material comprises, in weight percent, 25-27%wt of samarium, 49-51%wt of cobalt, 5-6.5%wt of copper, 3-3.5%wt of zirconium and 15-18%wt of iron. A preparation method includes the steps: smelting; casting an ingot; absorbing hydrogen for the cast ingot; making powder; performing orientation forming and sintering. In the smelting process, the thickness of a casting mould cavity is decreased, cooling water is filled into the wall of the mould cavity, cooling of the cast ingot is accelerated, element composition segregation is decreased, the production process is stabilized, a dendrite crystal is restrained by adding a zirconium element, hydrogen absorbing is performed for the cast ingot in the smelting process, production steps are saved, and energy consumption is reduced. In the subsequent milling process, the cast ingot absorbed hydrogen is crystallized into particles, the particles fracture along crystal boundaries in the milling process of airflow, the integrality of crystal particles is ensured, the anisotropy of the crystal particles is improved, magnetic powder particles are obtained, particle size distribution is concentrated with the range of 3.5-4.5 micrometers, the sintering temperature needed by the magnetic powder particle of each point of a blank is the same in the later sintering process, the sizes of the sintered crystal particles are the same and uniform, and the performances, particularly, such as residual magnetism Br, maximum magnetic energy product (BH) max and critical magnetic field Hk of a sintered permanent magnet are improved.
Owner:NINGBO NINGGANG PERMANENT MAGNETIC MATERIALS

Composite material, high frequency circuit substrate prepared from composite material, and preparation of composite material

ActiveCN106867173AImproved long-term thermo-oxidative aging performanceExcellent solvent solubilityPrinted circuit aspectsHigh frequency circuit adaptationsSolubilityDielectric
The invention relates to a composite material, a high frequency circuit substrate prepared from the composite material, and a preparation of the composite material. The composite material comprises 20 to 70 parts of a thermosetting mixture, 10 to 60 parts of glass fibre cloth, 0 to 70 parts of a powder filling material, and 1 to 3 parts of a curing initiator; the thermosetting mixture is composed of a thermosetting resin and an ethylene propylene rubber; the thermosetting resin is a polybutadiene or a copolymer of the polybutadiene with styrene, wherein the molecular weight of the polybutadiene is lower than 11000Da, the polybutadiene is composed of C and H, and contains more than 60% vinyl; the weight average molecular weight of the ethylene propylene rubber is larger than 100kDa, and lower than 150kDa, the number-average molecular weight of the ethylene propylene rubber is larger than 60kDa, and lower than 100kDa, and the ethylene propylene rubber is a solid material at room temperature. The composite material possesses excellent solvent solubility, and is excellent in operability; the high frequency circuit substrate prepared from the composite material possesses excellent high frequency dielectric properties and better thermal-oxidative aging properties.
Owner:GUANGDONG SHENGYI SCI TECH

Manufacturing method of ultra-fine grain high-temperature alloy plate blanks

ActiveCN103008659AExcellent high temperature strengthExcellent fatigue resistanceUltra fineSuperalloy
The invention discloses a manufacturing method of ultra-fine grain high-temperature alloy plate blanks. The manufacturing method comprises the following steps of 1, preparation of high-temperature alloy powder; 2, heat treatment of the high-temperature alloy powder; 3, selection of a high-temperature alloy core tube; 4, high-temperature spray deposition and composite recrystallization of plate blanks; and 5, heat treatment of the plate blanks, and finally forming the high-temperature alloy plate blanks in ultra-fine microstructures. According to the manufacturing method disclosed by the invention, the high-temperature alloy powder is prepared by adopting a gas atomization technology, and the obtaining of an oxygen-free and segregation-free well-closed formation is controlled through a heat treatment system; the element composition is controlled by selecting the high-temperature alloy core tube, and the real-time control for the temperature during a forming process is controlled; and the forming of high-temperature alloy is carried out on the outer surface of the high-temperature alloy core tube by adopting the high-temperature spray deposition technology, the composite recrystallization is synchronously carried out, the growth of grains in the microstructure is controlled as a large temperature gradient is simultaneously formed, and the high-temperature alloy plate blanks in the ultra-fine microstructures are finally formed through the heat treatment. According to the manufacturing method disclosed by the invention, the microstructure of the plate blanks is compact, the size is large, and most of all, a forging machine or an extrusion device in large tonnage is not needed.
Owner:BAOSHAN IRON & STEEL CO LTD

Preparation method of ferroalloy calibration samples for X-ray fluorescence spectrum analysis

InactiveCN102818722ASolving No Standard SamplesSolve the problem of insufficient standard samplesMaterial analysis using wave/particle radiationPreparing sample for investigationX-rayAlloy
The invention discloses a preparation method of ferroalloy calibration samples for X-ray fluorescence spectrum analysis. The preparation method is characterized in that firstly, high-pure metal and/or standard reagents are weighed according to the alloy proportioning, then, the high-pure metal and/or standard reagents are dissolved into solution by solvents, next, the solution is quantificationally transferred into a platinum yellow crucible and is melted after being mixed with lithium borate, oxidants and release agents, the cooling is carried out, and a ferroalloy calibration sample glass fuse piece is obtained. The method has the advantages that the ferroalloy calibration samples to be measured are compounded by reference or standard substances with similar element composition and content range, and the problem of no ferroalloy standard sample to be measured or standard sample insufficiency is solved. The ferroalloy calibration sample glass fuse piece obtained by the method is used for the X-ray fluorescence spectrum analysis, the result is accurate and reliable, and the application range of an X-ray fluorescence spectrum analysis method is expanded.
Owner:HBIS COMPANY LIMITED HANDAN BRANCH COMPANY
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