481 results about "Hafnium" patented technology

The invention provides a surface-modified sulfide electrolyte and a preparation method thereof, and an all-solid-state battery, the surface-modified sulfide electrolyte comprises a sulfide electrolyte and a modification layer coated on the surface of the sulfide electrolyte, the chemical general formula of the modification layer is LiaMbNcXd, 0 < = a < = 3, 0 < = b < = 1, 0 < = c < = 1, 0 < = d < = 6, and 0 < = c < = 1. M is at least one element of magnesium, aluminum, calcium, iron, zirconium, niobium, tantalum, tungsten, gadolinium, yttrium, indium, hafnium, lanthanum and ytterbium, and X is at least one element of oxygen, sulfur, fluorine, chlorine, bromine and iodine. According to the surface-modified sulfide electrolyte, the modification layer with high ionic conductivity and high oxidation potential is coated outside the sulfide electrolyte, so that when the surface-modified sulfide electrolyte is applied to a positive electrode of an all-solid-state battery, the modification layer can improve the oxidation potential of the electrolyte on the premise of not reducing the ionic conductivity of the electrolyte; the effects of improving the interface stability between the positive electrode active material and the sulfide electrolyte and further improving the cycle performance of the battery are achieved.

The present application provides an entropy-regulated composite dielectric film, which comprises a polymer matrix; and fillers dispersed in the polymer matrix, wherein the fillers comprise Bi 4‑a M 1a Ti (3‑3b) M 2b O 12 , wherein M1 comprises at least one of lanthanum, neodymium, samarium and praseodymium, M2 comprises at least one of zirconium, hafnium and tin, 0 The entropy-regulated composite dielectric film has high temperature resistance, high breakdown strength, high polarization strength, high energy storage density and good stability.

The invention discloses a nickel-based alloy composite plate and a preparation method thereof, and belongs to the technical field of nickel-based alloys, the nickel-based alloy composite plate comprises a stainless steel bottom plate and a nickel-based alloy plate, and the nickel-based alloy plate comprises, by weight, 52-58 parts of nickel powder, 17-21 parts of molybdenum powder, 8-12 parts of copper powder, 7-9 parts of boron powder, 2-3 parts of modified hafnium carbide powder, 4-7 parts of an alloy reinforcing agent and 2-3 parts of a fluxing agent. The modified hafnium carbide prepared from hafnium oxide and nano carbon powder successfully replaces metal hafnium with high cost in the traditional process; and meanwhile, the actual adding proportion of the modified hafnium carbide in the nickel-based alloy plate is greatly reduced, the cost of industrial mass production is doubly reduced from the two aspects of raw material selection and dosage control, and the economic requirement of large-scale production is better met.

A component for use in a semiconductor processing chamber is provided. A metal or metal alloy component body has a process-facing surface. An intermediate aluminum oxide coating is disposed on the process-facing surface, the intermediate aluminum oxide coating being at least 99% pure by weight and having a porosity of less than 0.1% by volume, the intermediate aluminum oxide coating having a first thickness. A process-exposed layer is disposed on the intermediate aluminum oxide coating, the process-exposed layer comprising at least one of yttrium, hafnium, zirconium, lanthanum, magnesium, and a lanthanide, the process-exposed layer being at least 99% pure by weight, having a porosity of less than 0.1%, and having a second thickness, the second thickness being less than or equal to the first thickness.

A preparation method of porous hafnium carbide superhigh-temperature ceramic is characterized by comprising the following steps: dispersing graphene oxide in a solvent to form a graphene oxide dispersion liquid, mixing a monomer hafnium source solution with the graphene oxide dispersion liquid, and carrying out hydrothermal treatment on a hafnium oxide carbon precursor network structure to obtain the porous hafnium carbide superhigh-temperature ceramic. The organic-inorganic hybrid precursor is subjected to two-stage heat treatment, the first stage is inorganic treatment, the second stage is carbon thermal reduction reaction, and the porous hafnium carbide ultrahigh-temperature ceramic material is obtained. Graphene oxide is used as a structure-directing agent and an in-situ carbon source, a monomer hafnium source is uniformly anchored on the surface of a GO sheet layer on the molecular scale, an organic-inorganic hybrid precursor is formed, after the precursor is subjected to hydrothermal crosslinking, Hf species and a carbon skeleton are highly mixed on the nanoscale, and the Hf / GO composite material is obtained. And the subsequent carbon thermal reduction reaction can be efficiently completed in a low-temperature interval of 1300-1450 DEG C.

This invention discloses a method for preparing high-purity zirconium oxide, belonging to the field of compound preparation technology. The method provides a breakthrough adjustment of the final concentration state and the cooling process after concentration and evaporation of an acidic zirconium oxychloride solution under the action of an oxidant. Simultaneously, crystallization is achieved through a two-stage concentration and evaporation process, followed by calcination to obtain hafnium-free zirconium oxide. The resulting zirconium oxide not only has a high yield but also high purity. Furthermore, the technical solution of this invention avoids the generation of ammonia nitrogen wastewater as in existing technologies, thus not only avoiding environmental impact but also significantly reducing production costs through the recycling of hydrochloric acid condensation, achieving a green and environmentally friendly effect.

The invention relates to the technical field of hydrometallurgy production systems, in particular to a solvent regeneration control system for separating zirconium and hafnium through MIBK method centrifugal extraction, which comprises a control module used on a solvent regeneration neutralization reactor, and the control module comprises a heat exchange module; the heat exchange module comprises a heat exchange unit; the heat exchange unit comprises a cooling liquid flow adjusting unit, a cooling liquid temperature detecting unit and a cooling liquid pressure detecting unit. And the heat exchange module is used for controlling the flow of the cooling liquid, the pressure of the cooling liquid and the temperature of the cooling liquid of the heat exchange unit so as to adjust the temperature of the mixed phase in the neutralization reactor. The control system can monitor the flow, temperature and pressure of cooling liquid in real time, accurately control opening, closing and temperature adjustment of the heat exchange unit, quickly respond to temperature change of a mixed phase in the neutralization reactor, remove reaction heat in time, effectively avoid the problem of extraction system emulsification caused by high-temperature decomposition and polymerization of thiocyanic acid in the solvent regeneration process, and improve the extraction efficiency. The solvent regeneration efficiency and quality are ensured.

The invention relates to the technical field of hafnium oxide preparation, in particular to a method for preparing hafnium oxide with ultralow iron content, which comprises the following steps: based on N235 extraction separation in a hydrochloric acid system, crushing hafnium oxide raw stone, performing coarse grinding to obtain hafnium oxide powder, then sequentially performing alkali fusion decomposition treatment and acid leaching impurity removal treatment to obtain a zirconium-hafnium mixed solution, and then performing vacuum drying on the zirconium-hafnium mixed solution to obtain the hafnium oxide with ultralow iron content. The preparation method comprises the following steps: taking hafnium as a raw material, carrying out extraction and back extraction to obtain a hafnium-enriched solution, treating the hafnium-enriched solution with ion exchange resin to obtain a high-purity hafnium solution, finally adding saturated ammonia water, filtering and washing the obtained precipitate, drying, and firing to obtain the hafnium oxide with ultralow iron content. According to the invention, while zirconium and hafnium separation is realized, a small amount of contained metal cations, especially iron ions, are fully removed, and the iron content is reduced, so that hafnium oxide with ultralow iron content is obtained.

The invention discloses a method for preparing hafnium oxide from hafnium oxalate feed liquid through an oxidation precipitation method, and belongs to the technical field of hydrometallurgy. The specific method comprises the following steps: adding an oxidizing agent into hafnium oxalate feed liquid to destroy oxalate ions in hafnium oxalate so as to enable hafnium to form hydroxide precipitates; and separating the generated white precipitate, and roasting at high temperature to obtain hafnium oxide. The strong oxidant used in the method is low in cost, high in precipitation efficiency, green, environmentally friendly, free of large pollution to equipment and the environment and wide in application range. The method is simple in process, does not involve a complex process flow, does not need precise equipment, avoids a large amount of alkali liquor required by metal ion precipitation, is simpler in process flow, higher in efficiency and lower in cost, avoids the generation of a large amount of wastewater, and is very environment-friendly. And meanwhile, the process is wide in application range and suitable for various oxalic acid metal feed liquid.

Disclosed herein is a method, system and apparatus for forming, by a cyclic process, a dopant concentration gradient in a doped hafnium zirconium oxide (HZO) layer on a substrate, the cyclic process includes, providing the substrate in a reaction chamber, a) pulsing a hafnium precursor(s) into the reaction chamber, where at least a part of the substrate is contacted with the hafnium precursor(s), b) pulsing a zirconium precursor(s) into the reaction chamber, where at least a part of the substrate is contacted with the zirconium precursor(s), c) pulsing an oxygen reactant(s) into the reaction chamber, where at least a part of the substrate is contacted with the oxygen reactant(s), d) pulsing a dopant precursor(s) into the reaction chamber, where at least a part of the substrate is contacted with the dopant precursor(s), and e) purging the reaction chamber.

The invention belongs to the technical field of geological sample analysis and detection, and particularly discloses a method for measuring the amount of each element of lithium ore in a closed acid-soluble system, and the method comprises the following steps: pretreating the lithium ore; the pretreated lithium ore is weighed and put into a closed sample dissolving device, hydrofluoric acid and purified nitric acid are sequentially added, and the closed sample dissolving device is closed; carrying out heat preservation on the closed sample dissolving device twice to obtain a test solution; and measuring the test solution by using an inductively coupled plasma mass spectrometer to obtain a working curve, and calculating the content of the analysis element in the sample solution by using the working curve. The method for determining the amount of each element in the lithium ore by adopting the closed acid-soluble system has the characteristics of simplicity in operation, high efficiency and good stability, realizes simultaneous determination of the amount of lithium, rubidium, cesium, beryllium, strontium, niobium, tantalum, zirconium, hafnium and rare earth elements in the large-batch lithium ore, and further provides a reference for determination of main trace elements in the lithium ore.

The application discloses a method for constructing oxygen defect regulation of hafnium dioxide 5d track electron, comprising the following steps: S1, using a hydrothermal method, by regulating the oxygen partial pressure in the preparation process, preparing hafnium oxide nanocrystals with different oxygen defects and calculating the oxygen defect concentration; S2, according to the first principle, calculating and constructing a hafnium dioxide crystal model under a microstructure, and modifying the corresponding model according to the experimental results of step S1; S3, according to the hafnium dioxide with oxygen defects obtained in step S2, calculating the total state density and the partial state density of the near-oxygen vacancy end hafnium atom and the far-oxygen vacancy end hafnium atom, respectively, calculating the proportion of the d atom track, and establishing a method for regulating the hafnium dioxide 5d track electron.

The invention relates to the field of hydrometallurgy, and discloses a method for converting hafnium oxalate feed liquid into hafnium oxychloride feed liquid, which is characterized by comprising the following steps: adding an HCl solution and an oxidizing agent into the hafnium oxalate feed liquid, and reacting at a certain temperature to obtain a hafnium oxychloride solution. The method has the advantages of simple operation, no introduction of any metal impurity ions, small reagent consumption, low energy consumption, low cost, high efficiency, no physical state change, and realization of continuous production. The method for adding the HCl solution and the oxidizing agent into the oxalate feed liquid is also suitable for converting oxalate solutions of other metal ions into chloride solutions, including but not limited to zirconium oxalate, titanium oxalate, thorium oxalate, scandium oxalate, niobium oxalate, tantalum oxalate, vanadium oxalate, cobalt oxalate, cesium oxalate and rubidium oxalate.

A grease composition that includes at least an oil-based medium, a thickener, and a fullerene-like nano-structure. The fullerene-like nano-structure includes a plurality of layers each comprised of a metal chalcogenide composition has a molecular formula of MX2, where M is a metallic element selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), mercury (Hg) and combinations thereof, and X is a chalcogen element selected from the group consisting of sulfur (S), selenium (Se), tellurium (Te), oxygen (O) and combinations thereof.

The invention provides a ferroelectric capacitor and a preparation method thereof, the ferroelectric capacitor comprises a bottom electrode, a ferroelectric layer and a top electrode which are sequentially arranged from bottom to top, the ferroelectric layer is a lanthanum-doped hafnium zirconium oxide film prepared by an atomic layer deposition method, and the doping concentration of lanthanum in the lanthanum-doped hafnium zirconium oxide film is less than 1 at%. The ferroelectric capacitor can solve the problems that in the prior art, a ferroelectric capacitor based on an HZO cannot give consideration to a high k value and strong ferroelectricity, and is difficult to meet a low-power-consumption application scene.

The invention relates to a zirconium and hafnium extraction agent as shown in a formula I, an extraction system and a method for separating and purifying zirconium and hafnium. The zirconium and hafnium extraction agent shows excellent zirconium and hafnium separation performance and is suitable for efficient separation and high-purity preparation of zirconium and hafnium. According to the zirconium and hafnium separation and purification method, stable preparation of high-purity zirconium and hafnium products with the purity not lower than 99.99% is achieved. (I)

The utility model discloses a code disc for a reflective encoder, which relates to the technical field of encoder equipment and comprises a glass code disc, a low-reflection film is fixedly connected to the surface of the glass code disc, and a high-reflection film is fixedly connected to one side, far away from the glass code disc, of the low-reflection film. The low-reflection film is formed by plating acid-resistant alkali metal and metal oxide through a vacuum coating machine, the acid-resistant alkali metal comprises niobium, molybdenum, tantalum and hafnium, one of the niobium, the molybdenum, the tantalum and the hafnium is short for H, the metal oxide comprises sio2, sio, al2o3 and zro2, one of the sio, the al2o3 and the zro2 is short for L, and the plating sequence of the acid-resistant alkali metal and the metal oxide is LHLHLHLHLHL, and after the thickness of each layer of the acid-resistant alkali metal and the metal oxide is optimized, the thickness range is 10-150nm, so that the problems that the performance of a traditional material cannot reach an ideal level and the overall effect and the accuracy of equipment are reduced when the traditional glass code disc is in a working environment under high-intensity light or in a scene requiring high reflectivity are solved.

The invention provides a hafnium-zirconium-oxygen film, a preparation method thereof and a hafnium-zirconium-oxygen film sensor, and belongs to the technical field of piezoelectric sensors, the hafnium-zirconium-oxygen film is prepared from a hafnium-zirconium-oxygen material, the chemical general formula of the hafnium-zirconium-oxygen material is Aly-HfxZr1-xO2, x is greater than or equal to 0.3 and less than or equal to 0.7, and y is greater than or equal to 0.02 and less than or equal to 0.08. The lead-free hafnium-based oxide is selected as a piezoelectric core, HfxZr1-xO2 is adopted as a matrix, Al is doped to stabilize an orthogonal ferroelectric phase and inhibit oxygen vacancy, d33 = 85-95 pC / N within the thickness range of 10-200 nm and reaches 90% of that of an existing PZT film, and the Curie temperature is increased to 600 DEG C and is greatly increased compared with 350 DEG C of the PZT film. And the material is completely free of lead and conforms to the RoHS instruction.

This disclosure relates to ethylene interpolymer products comprising a Melt Flow-Intrinsic Viscosity Index value, MFIVI, of from ≥0.05 to ≤0.80; a first derivative of a melt flow distribution function, formula (I) at a loading of 4000 g, of from ≥−1.85 to ≤−1.51; a sum of unsaturation, SUMU, from ≥0.047 to ≤0.100 unsaturations per 100 carbon atoms; and a residual QC catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. Ethylene interpolymer products comprise at least two ethylene interpolymers. Ethylene interpolymer products are characterized by a melt index (I2) from 0.3 to 500 dg / minute, a density from 0.855 to 0.975 g / cc and from 0 to 25 mole percent of one or more a-olefins. Ethylene interpolymer products have polydispersity, Mw / Mn, from 1.7 to 25; and CDBI50 values from 1% to 98%. These ethylene interpolymer products have utility in flexible as well as rigid applications.

A ceramic sintered body contains a first particular element consisting of five or six elements selected from among titanium (Ti), vanadium (V), zirconium (Zr), niobium (Nb), molybdenum (Mo), hafnium (Hf), tantalum (Ta), and tungsten (W); a second particular element consisting of one element selected from yttrium (Y) and aluminum (Al); and elemental carbon (C). The total amount of the first particular element, the second particular element, and elemental carbon is 98 at % or more. The ceramic sintered body has a plurality of microstructures having respective compositions different from one another. One of the plurality of microstructures includes a solid solution containing at least three members of the first particular element.

The surface treatment agent is designed to improve adhesion to a coating film. This agent contains at least one metal component (A) selected from the group consisting of zirconium, titanium, and hafnium, as well as an alkyldiallylamine polymer (C). The metal component (A) has a content ranging from 10 ppm to 10,000 ppm by mass, in terms of metal element, relative to the total mass of the surface treatment agent. Furthermore, the alkyldiallylamine polymer (C) includes a segment with a heterocyclic structure represented by formula (1a) or (1b).

The invention discloses an on-line degassing device in a zirconium and hafnium extraction process, and relates to the technical field of zirconium and hafnium extraction, the on-line degassing device comprises a tank body, the tank body is internally provided with a multi-dispersion liquid distribution mechanism, and the multi-dispersion liquid distribution mechanism comprises an annular guide rail. According to the online degassing device for the zirconium and hafnium extraction process, when liquid is guided in, the liquid flows into a liquid guide hopper through a liquid guide pipe, a third driving motor is started, the third driving motor drives a driven rotating tooth to rotate through a driving rotating tooth, and therefore a flow guide frame below a butt joint pipe is driven to rotate; the liquid on the liquid guide hopper is uniformly distributed on the trays through the liquid distribution holes below the flow guide frame, after the liquid on the single tray is arranged, the driving motor II is started, the driving motor II drives the mounting rotating plate to rotate, and a new tray is rotated to the lower part of the flow guide frame, so that the liquid distribution operation of each tray is uniformly completed; and it is ensured that all dissipated gas can be separated from liquid, and the effect of gas blocking caused by liquid accumulation is avoided.

The invention relates to a wear part for an arc torch, plasma torch or plasma cutting torch, characterised in that the wear part or at least one part or a region of the wear part consists of an alloy formed from silver and zirconium, silver and hafnium, or silver and zirconium and hafnium.

A capacitor includes first and second electrodes spaced apart from each other, a dielectric layer disposed between the first and second electrodes, the dielectric layer including at least one of hafnium and zirconium, a first insertion layer disposed between the first electrode and the dielectric layer, and a second insertion layer disposed between the dielectric layer and the second electrode. The first insertion layer includes a first conductive material different from the hafnium or zirconium forming the dielectric layer. The second insertion layer includes a second conductive material different from the hafnium or zirconium forming the dielectric layer. The first and second conductive materials each have a lattice constant with a lattice mismatch of 2% or less from a horizontal lattice constant of a dielectric material of the dielectric layer.

This invention discloses a method for preparing high creep-resistant and high-temperature resistant titanium alloy powder, relating to the field of titanium-based alloy technology. The titanium alloy powder composition includes 4%–8% aluminum, 1%–6% tin, 2%–8% zirconium, 1%–10% niobium, 0.5%–5% molybdenum, 0.05%–0.8% silicon, 0.01%–0.5% yttrium, and 0.5%–5% hafnium, with the balance being titanium and impurities. The titanium alloy melt is obtained by vacuum melting, cooled into alloy ingots, remelted, and then conveyed to an atomization system under high pressure under inert argon protection. Spherical titanium alloy powder is obtained by gas atomization; after multi-stage sieving and deep purification, impurities are removed and the oxygen, nitrogen and hydrogen content is reduced. The purified titanium alloy powders of different particle sizes are mixed and stored in an inert atmosphere; the atomization pressure is 3MPa to 10MPa, the powder particle size is 15μm to 53μm or 45μm to 105μm, the sphericity is not less than 95%, and the oxygen content is ≤0.15wt%, nitrogen content is ≤0.03wt%, and hydrogen content is ≤0.01wt%. This invention has excellent high-temperature stability, high creep resistance and good formability.

An article has a substrate and a layer atop the substrate. The layer has: a matrix comprising at least one of hafnium silicate (HfSiO4) and ytterbium disilicate (Yb2Si2O7); and barium magnesium alumino silicate (BMAS).

Embodiments of the present disclosure are directed towards polyolefin compositions, useful for films, made with asymmetrical hafnium metallocenes having an n-propyl cyclopentadienyl ligand, processes utilizing the polyolefin compositions, and products made with the compositions.

The present application relates to a kind of preparation method and application of composite modified clay mineral adsorbent for adsorbing dioxin, and the preparation method includes the following steps: (1) clay mineral is crushed and sieved, sintering, obtain the clay mineral powder after sintering;(2) the clay mineral powder after sintering and cerium trichloride are mixed into deionized water, citric acid solution is added, obtain the cerium after clay mineral;(3) the cerium after clay mineral, sodium azide and alkali metal element are weighed and mixed uniformly, after temperature treatment, obtain cerium nitride & clay mineral compound;(4) the cerium nitride & clay mineral compound is dispersed into phosphate buffer solution, hafnium oxychloride solution is added, in situ photodeposition method is reacted, obtain composite modified clay mineral.Compared with traditional clay mineral, the composite modified clay mineral prepared in the present application not only has strong adsorption removal efficiency for dioxin, but also has better reusability.

The invention relates to a nickel-based superalloy comprising (in% by weight): 6.0% to 12.0% cobalt (Co); from 6.0% to 12.0% of iron (Fe); chromium (Cr) from 14.0% to 18%; up to 2.0% molybdenum (Mo); 2.0% to 5.0% of tungsten (W); from 4.0% to 5.5% of aluminum (Al); from 2.0% to 3.5% tantalum (Ta); up to 0.2% titanium (Ti); from 0.03% to 0.3% of carbon (C); from 0.005% to 0.03% of boron (B); from 0.005% to 0.03% of zirconium (Zr); from 0.005% to 0.5% of silicon (Si); 0.002% to 0.2% of a total content of Y, Sc, lanthanides and actinides; from 0.05% to 3.0% hafnium (Hf); up to 2.0% manganese (Mn); nickel (Ni) and unavoidable impurities.

A non-oriented electrical steel sheet according to an embodiment comprises 2.0 to 3.8 wt% of silicon (Si), 0.5 wt% or less (excluding 0) of manganese (Mn), 0.6 wt% or less (excluding 0) of aluminum (Al), 0.0015 wt% or less of scandium (Sc), 0.0015 wt% or less of hafnium (Hf), 0.0015 wt% or less of tantalum (Ta), and the balance being iron (Fe) and other inevitable elements, and thus may have mechanical properties suitable for use as a motor core material.