94 results about "Zn element" patented technology

The present invention discloses a catalyst for dehydrogenating cyclohexanol to cyclohexanone, a preparation method thereof and an application thereof. The catalyst comprises a silica support and active components and active promoters uniformly loaded on the silica support; the active components include copper element, zinc element and magnesium element; the active promoter is selected from borate. The catalyst for dehydrogenating cyclohexanol to cyclohexanone disclosed by the present invention greatly enhances the interaction between the silica support and the active components, and significantly improves the long-term stability of the catalyst on the basis of ensuring that the catalyst has excellent catalytic activity and selectivity.

The invention provides a cast rare earth magnesium alloy and a preparation method thereof, and relates to the technical field of magnesium alloys. The cast rare earth magnesium alloy is prepared from the following elements in percentage by mass: 4.5 to 6.50 percent of Gd element, 0.5 to 2.0 percent of Y element, 0.05 to 1.2 percent of Nd element, 0.05 to 0.5 percent of Er element, 0.3 to 1.2 percent of Zn element, 0.3 to 0.6 percent of Zr element, less than or equal to 0.1 percent of total content of inevitable impurities, less than 0.05 percent of single impurity and the balance of Mg element. By adding the Gd element, the Y element, the Nd element and the Er element, the basal texture of the magnesium alloy can be weakened, and the plasticity is improved. And the content of each element is controlled within the range, so that the interaction among the elements can be improved, and the magnesium alloy can realize good strength and plasticity synergy.

The invention provides a high-entropy alloy carbon nano composite fiber membrane, zinc element and one or more metal elements of iron, cobalt, nickel, magnesium, manganese and copper are compounded and concentrated on the surface of carbon nanofiber in a metal oxide form, the diameter of the carbon nanofiber in the composite fiber membrane is 100-600nm, the fiber is of a porous structure, and the specific surface area is 80-450m < 2 > / g; the fiber membrane is prepared by the following steps: adding metal salt and / or a metal oxide precursor into a solvent, stirring and dissolving to obtain a metal salt precursor dispersion liquid, adding polyacrylonitrile, heating and stirring to obtain a composite fiber membrane spinning solution, and carrying out electrostatic spinning, pre-oxidation and carbonization treatment. The prepared composite fiber membrane is high in evaporation rate and high in output current and voltage, and can be applied to the field of water and electricity co-production.

The invention relates to shot-blasting-free treatment liquid for zinc-based coating hot forming steel, a preparation method and application of the shot-blasting-free treatment liquid, and relates to the technical field of steelmaking. Wherein the shot-blasting-free treatment liquid comprises 95 to 98 parts of a solvent; the composition comprises the following components in parts by weight: 0.2 to 0.3 part of an organic modifier, 1 to 4 parts of an inorganic film-forming agent, 0.1 to 0.4 part of an organic chelating agent, 0.2 to 0.4 part of a stabilizer, and 0.1 to 0.3 part of a surface improving agent. The shot-blasting-free treatment liquid forms a compact and uniform composite protective film on the surface of zinc-based coating steel. The protective film is converted into an inert layer with high-temperature oxidation resistance in the heat treatment process, and contact between oxygen and a zinc coating is effectively blocked, so that oxidation and volatilization of zinc at high temperature are remarkably reduced, the generation amount of ZnO and the loss of zinc element are reduced, the protective effect of the coating in the heat forming process is ensured, and the service life of the coating is prolonged. The product treated by the shot-blasting-free treatment liquid and processed by the hot forming process is clean in surface, controllable in surface oxidation product and free of an additional shot-blasting process.

The invention discloses a 7-series aluminum alloy material and a preparation method thereof, and belongs to the field of aluminum alloy preparation.The 7-series aluminum alloy material and the preparation method thereof have the advantages that on the basis of optimizing components of 7-series aluminum alloy, the proportion and the process of the components are properly adjusted, it can be guaranteed that the tensile strength, the yield strength and the ductility meet the use requirements on the whole, and the corrosion resistance can be further improved; by adding the Zn element and the Mg element, the strength and hardness of the 7-series aluminum alloy can be remarkably improved, a proper Cu or Cr ratio can reduce residual phases (a T-Al2Mg3Zn3 phase, an AlZnMgCu phase or an AlZnMgCr phase), but after solution treatment, the residual phases gradually disappear, all alloy elements can be dissolved in a matrix in a solid mode, an AlFe phase is reduced, then corrosion sites are reduced, and by combining the synergistic effect of the Mn element and the V-containing refiner, the corrosion resistance of the 7-series aluminum alloy is improved. The crystalline phase in the 7-series aluminum alloy is refined, so that the mechanical property of the 7-series aluminum alloy can be obviously improved, and the corrosion resistance of the 7-series aluminum alloy can be obviously improved.

The invention discloses a squeeze casting preparation method of a high-toughness and high-plasticity aluminum-copper alloy, and relates to a squeeze casting preparation method of an aluminum alloy. The method aims to solve the technical problems that an existing aluminum alloy casting formed through extrusion casting is uneven in structure and not high in density, and strength and plasticity are difficult to synchronously improve. A proper amount of Zn element and Mg element are added into the aluminum-copper alloy, Mg and Cu are combined to generate an S-Al2CuMg phase, the thermal stability of the S-Al2CuMg phase is superior to that of a theta phase, dislocation movement can be hindered through dispersed distribution of the S phase, and meanwhile the fatigue life of the alloy is prolonged. According to the preparation method, the mass fraction ratio of Zn to Mg is properly reduced, so that the precipitation rate of the S phase is increased, the extrusion casting process is combined for forming, the T6 heat treatment process is carried out after forming, the alloy performance is further strengthened, the high-toughness and high-plasticity aluminum-copper alloy is prepared, and the tensile strength under the room temperature condition ranges from 400 MPa to 460 MPa.

To provide a method for producing an oxide sintered body, in which a content of impurities is significantly reduced.SOLUTION: A method of the present invention for producing an oxide sintered body uses, as a raw material, an oxide containing two or more elements selected from In element, Ga element, and Zn element and satisfies the following conditions (a) to (c). An oxide having a purity of 6 N or more is used as the raw material. A grinding and mixing medium is formed of an oxide containing no element other than the elements selected as the raw material. Ultrapure water is used as a dispersion medium to form a slurry.SELECTED DRAWING: None

The invention provides a nickel hydroxide material and a preparation method thereof, and relates to the technical field of nickel-metal hydride batteries. The nickel hydroxide material is of a spherical composite structure and sequentially comprises a multi-element doped nickel hydroxide matrix, a hydroxyl cobalt oxide middle layer and an outer lithium modification layer which are arranged from inside to outside, at least one of a zinc element, an aluminum element and a magnesium element is doped in the nickel hydroxide matrix. According to the nickel hydroxide material, through a unique spherical composite structure and a specific element doping strategy, the electrochemical performance and the structural stability of the material are remarkably improved, and the nickel hydroxide material has a wide application prospect in high-performance battery application.

The invention belongs to the technical field of composite aluminum alloy, and discloses an aluminum alloy composite board and a corrosion-resistant aluminum alloy composite board. The aluminum alloy composite board is of a double-layer structure which comprises a core layer and a corrosion-resistant layer; the core layer comprises a Si element, a Fe element, a Cu element, a Mn element and a Mg element, and the anti-corrosion layer comprises a Zn element, the Si element and the Fe element; the corrosion-resistant aluminum alloy composite board is obtained by carrying out zinc impregnation treatment on the aluminum alloy composite board. And after zinc impregnation treatment, the difference value between the potential of a Zn-element-free diffusion area of the anti-corrosion layer and the potential of the innermost layer of the core layer is smaller than or equal to 150 mV. The corrosion-resistant aluminum alloy composite board shows excellent layered corrosion in a corrosion environment.

The invention belongs to the technical field of blast furnace smelting, and particularly discloses a method for discharging a zinc element in a blast furnace. The method comprises the steps of zinc discharge triggering condition judgment, charge level lowering operation, heat system and slagging system control, air volume and top pressure control, charging system adjustment and safety monitoring, specifically, zinc discharge operation is triggered through cycle management or furnace condition fluctuation, the charge level is lowered to 13-15 m and maintained for 2-3 h, the furnace top temperature is controlled to be 300-350 DEG C, and the furnace top temperature is controlled to be 30-35 DEG C; the load is reduced to 3.5 before the material is reduced, the load is controlled to be 2.4-2.6 during the period, the air volume is gradually reduced from the initial value being less than or equal to 4200Nm < 3 > / min, and the ore coke angle is synchronously adjusted by 0.5 degree when the material line is 4-15m and the ore coke is lifted every 1m. The zinc element is efficiently and safely discharged, the zinc circulation enrichment mechanism is effectively broken, and stable operation of the blast furnace is guaranteed.

The invention provides a 7xxx series aluminum alloy plate strip for anodic oxidation with a high recovery ratio and a preparation method of the 7xxx series aluminum alloy plate strip. The 7xxx series aluminum alloy plate strip comprises the following elements of 0.06%-0.12% of Si element, 0.10%-0.25% of Fe element, 4.5%-5.5% of Zn element, 2.0%-3.0% of Mg element, 1.2%-2.0% of Cu element, 0.05%-0.15% of Mn element, 0.10%-0.15% of Er element, 0.10%-0.12% of Zr element, 0%-0.03% of Ti element and the balance aluminum element. The aluminum alloy plate strip is prepared through the steps of reclaimed material grading pretreatment, low-liquid-level semi-continuous casting, multi-stage homogenizing heat treatment, hot rolling, cold rolling, solid solution, pre-stretching, two-stage aging and the like. Through joint optimization of material components and the process, the finished plate strip has excellent mechanical performance, an oxidation film is uniform in color and luster, and salt mist resistance, friction resistance and the like are achieved.

The invention relates to the technical field of new materials, in particular to an Al-Cu-Li-Mg-Ag-Zn-Mn-Zr series high-strength and high-heat-resistance aluminum lithium alloy and a preparation method thereof. According to the invention, Al-Cu-Li-Mg-Ag-Zn-Mn-Zr is used as an alloy system, a certain amount of Cu, Li, Mg and Ag alloy elements are added to obtain a core-shell structure strengthening phase T1-AgMg phase which is stable at a high temperature, a certain amount of Zn element is added to improve the intrinsic stability of the T1 phase, and a certain amount of Mn and Zr alloy elements are added to obtain strengthening phases of a T phase and an Al3Zr phase. The novel high-strength and high-heat-resistance aluminum-lithium alloy with excellent tensile property at room temperature, 250 DEG C and 300 DEG C is obtained by combining proper preparation processes such as casting, homogenization, thermal deformation, solid solution aging and the like.

The application discloses a composite coating with inert plating layer for reducing hot forming crack of high-strength steel, which is in a double-layer composite form and is obtained by pre-plating a layer of plating layer on the surface of high-strength steel, wherein the pre-plating layer contains at least one of B, Al, Cr, Cu, Mo and W elements, and the elements have positive mixing enthalpy with Zn element, that is, inert interaction with liquid Zn atoms. A conventional Zn plating layer is plated on the pre-plating layer. The thickness of each plating layer in the double-layer plating layer is 1-30 microns. The plating layer for reducing the hot forming crack tendency of high-strength steel combines chemical composition, element interaction and other factors, so that the liquid Zn atoms which are easy to penetrate along the grain boundary in the hot forming process are repelled by the plating component atoms in the pre-plating layer, the penetration of the liquid Zn atoms into the grain boundary of the steel base body is prevented, and the formation of the hot forming crack is reduced or even avoided. Through reasonable regulation and control of the element ratio of the plating layer, the purpose of effectively reducing the crack tendency of different types of high-strength steel in the hot forming and resistance spot welding processes can be achieved.

The present invention discloses a high-toughness and easily soluble magnesium alloy and a preparation method thereof. The high-toughness and easily soluble magnesium alloy contains the following components by mass percentage: 1% to 6% of Zn element, 1% to 4% of Ni element, 0.2% to 4% of element A, 0.2% to 1% of element B, and the balance is Mg element; the element A is at least one of Gd element and Y element, and the element B is at least one of Ga element and In element; the high-toughness and easily soluble magnesium alloy contains 3 kinds of intragranular precipitation phases with regular shapes, and the intragranular precipitation phases are basal plane-oriented MgZn phase, prism plane-oriented MgZn phase, and non-oriented MgNi phase. The high-toughness and easily soluble magnesium alloy of the present invention simultaneously has high strength, high elongation rate, and high dissolution rate. The tensile strength at room temperature is ≥240 MPa, the yield strength is ≥160 MPa, the elongation rate is ≥8%, and the dissolution rate in water at room temperature is ≥30 mg·cm<supgt;‑2< / supgt;·h<supgt;‑1< / supgt>.

The invention relates to a catalyst and a preparation method and application thereof, the catalyst is a NiZnFe-LTH catalyst, in the catalyst, the molar ratio of a nickel element to a zinc element is 1: (0.1-10), and the ratio of the total mole number of the nickel element and the zinc element to the mole number of an iron element is (2.5-3.5): 1. According to the NiZnFe-LTH catalyst with the specific composition, the catalytic activity and stability of the catalyst are jointly improved through mutual cooperation of three transition metal elements, and efficient and stable decomposition of ozone under the condition of relatively high relative humidity is facilitated.

The present invention relates to a black granular zinc composite. 【Solution means】(a) Zinc element or zinc alloy metal in an amount c in the range of 58.0 to 85.0% by weight with respect to the composite, (b) ZnO, and (c) a further material, this further material (the amount of c) c Zn、M is in the range of 4.5 to 17.0% by weight with respect to the total amount of the composite material, and components (b) and (c) are at least partially mixed with the zinc element or zinc alloy metal (a). The black zinc particles are used as a corrosion inhibitor pigment. The particles are produced by a dry grinding process under severe conditions where they are incorporated into the pigment after the grinding process in the presence of an abrasion aid. add ​

The invention relates to the technical field of functional drinking water preparation, and discloses multi-element compound functional drinking water and a preparation method thereof. Aiming at the defects of serious element antagonism, high heavy metal residue risk, single function and the like in the prior art, the scheme innovatively adopts a five-stage gradient feeding process: an ion buffer system is established by preferential dissolution of calcium and magnesium, and stable retention of iron and zinc elements (the oxidation rate of Fe < 2 + > is less than or equal to 3%) is realized by shading treatment; elements easy to hydrolyze are fixed by a citric acid-titanoxyl complexing technology (the dissolution rate of titanium is greater than or equal to 99%), calcium and magnesium precipitation is inhibited by dynamic pH regulation (4.0-6.0), and nano-scale uniform dispersion (D50 is less than or equal to 100 nm) of 19 elements is realized by combining ultrasonic cavitation (45kHz) and 0.22 mu m terminal filtration. A gradient cooling (0.8 DEG C / min) and sodium citrate synergistic stabilization technology is originally created, so that the shelf life is prolonged.

The invention relates to the technical field of catalysts, and discloses a composite metal oxide, a preparation method and application thereof, and a dehydrogenation method of 1, 4-butanediol. The composite metal oxide comprises a copper element, a zirconium element and a metal M element, the metal M element is selected from at least one of a zinc element, an aluminum element, a manganese element, a titanium element and a cerium element, the zirconium oxide comprises ZrO2 and Zr3O1-x, and the value of x is greater than 0 and less than 1. The composite metal oxide provided by the invention is particularly suitable for the dehydrogenation reaction of 1, 4-butanediol, when the composite metal oxide is applied to the dehydrogenation reaction of 1, 4-butanediol, the reaction temperature can be reduced, the catalyst is high in activity, good in stability and high in target product selectivity, and in addition, the composite metal oxide provided by the invention does not contain Cr, and is environment-friendly and pollution-free.

The invention provides a magnesium alloy and a preparation method thereof. The magnesium alloy comprises the following elements in percentage by mass: 2.0 to 4.5 percent of Zn element, 1.0 to 2.5 percent of Sm element, 0.5 to 1.5 percent of Cu element, 0.1 to 0.6 percent of Ce element, 0.1 to 0.5 percent of A element, less than or equal to 0.15 percent of inevitable impurities and the balance of Mg element, wherein the element A is selected from any one or more of Ca element, Sr element and Zr element; the heat conductivity of the magnesium alloy ranges from 130 W / (m.K) to 142 W / (m.K), the tensile strength ranges from 260 MPa to 285 MPa, the yield strength ranges from 150 MPa to 170 MPa, and the ductility ranges from 10% to 15%. The magnesium alloy disclosed by the invention has relatively high heat conductivity and relatively high strength, so that the requirement of a high-power integrated light-weight electronic component heat dissipation piece is met.

The invention belongs to the technical field of soluble magnesium alloy rods, and discloses a soluble magnesium alloy rod with enhanced elongation, and the magnesium alloy rod comprises the following chemical components in percentage by mass: 1.5%-14.5% of Gd element, 0.5%-4.0% of Y element, 0.1%-2.5% of Zn element, 0.2%-0.5% of Zr element, 0.01%-0.5% of Li element, 0.01%-0.6% of Ni element, 0.01%-0.5% of Ga element, 0.01%-0.5% of In element, 0.1%-2.0% of Cu element and the balance of Mg element. In component design, various elements are scientifically proportioned, the proportion of Gd to Y and the proportion of Zn to Zr are just right, specific elements are added to form a composite structure, the ductility is improved, the dissolution rate and strength are balanced by means of the Cu element, in the performance aspect, dissolution is accelerated at the high temperature of 200 DEG C, the dissolution rate is increased by 10%-15% compared with the room temperature, the degradation period can be shortened, a dissolved product is fine and uniform, and the degradation rate is high. The biocompatibility and environmental friendliness are excellent, the application field is wide, and degradable medical instruments are covered.

The application discloses a kind of HPb59-1 high-zinc lead brass laser brazing additive repair method and application, belong to high-zinc lead brass brazing additive technical field.The application applies laser brazing additive repair technology to aircraft HPb59-1 high-zinc lead brass damage repair, solves the evaporation of Pb, Zn element in HPb59-1 alloy due to conventional fusion welding repair, which not only harms human health, but also reduces the mechanical properties of welded joint, improves the damage repair quality of aircraft HPb59-1 high-zinc lead brass parts.

The invention provides an aluminum alloy plate and a preparation method thereof. The preparation method comprises the steps that smelting, casting, soaking and heating integrated treatment, hot rolling and cold rolling are sequentially conducted after ingredients of an aluminum alloy plate are prepared, and a cold-rolled coiled material is obtained; the aluminum alloy plate comprises the following components in percentage by mass: 0.6-1.3% of Si element, less than or equal to 0.5% of Fe element, 0.5-1.1% of Cu element, less than or equal to 1.0% of Mn element, 0.6-1.2% of Mg element, less than or equal to 0.25% of Cr element, less than or equal to 0.7% of Zn element, less than or equal to 0.2% of Ti element, less than or equal to 0.2% of Zr element and the balance of Al element. The cold-rolled coiled material is sequentially subjected to solid solution treatment, quenching (multi-stage cooling), straightening and pre-aging, and a first finished coiled material is obtained; and the first finished coiled material is subjected to differential temperature heating artificial aging treatment, and the aluminum alloy plate is obtained. The production efficiency of the preparation method is high, and the comprehensive performance of the obtained aluminum alloy plate is good.

A plate-shaped alumina particle comprising at least one element (A) selected from the group consisting of iron, nickel, copper, chromium, cobalt, zinc, scandium and ruthenium, and titanium.

The invention relates to the technical field of nanostructure preparation, and discloses a composite metal hydroxide nanosheet as well as a preparation method and application thereof. The composite metal hydroxide nanosheet contains a magnesium element and a transition metal element; the transition metal elements are selected from four or more of manganese element, iron element, cobalt element, nickel element, copper element and zinc element. The composite metal hydroxide nanosheet can be applied to an energy storage electrode material, transition metal hydroxide is a common electrode material and has the comprehensive characteristics of high theoretical capacity, good Faraday reaction performance, rich raw material sources and environmental friendliness, and the composite metal hydroxide nanosheet can be applied to the energy storage electrode material. Therefore, the composite metal hydroxide nanosheet has a good application prospect when being used as an electrode material for supercapacitor energy storage.

The application provides a method for improving thickness precision of 7-series aluminum alloy hot-rolled strip, which comprises the following steps: fixing the sampling time and sampling depth of the casting flow groove mushroom sample and fixing the surface turning depth of the flow groove mushroom; then, by analyzing the correlation between the thickness deviation value of the hot-rolled strip and the Cu and Zn element content in the casting flow groove mushroom sample, a thickness compensation formula of the 7-series aluminum alloy hot-rolled strip is established, and thickness compensation intervention is carried out before hot-rolling production. Thus, the thickness precision of the 7-series aluminum alloy hot-rolled strip is improved, and the product competitiveness is improved.

The present invention discloses a degradable hydrogel coil based on a zinc-iron-copper alloy and a preparation method thereof. The degradable hydrogel coil includes a coil body. Among them, a hydrogel filament core and an anti-unwinding wire are arranged in the coil body. The material of the coil body contains the following components by mass percentage: 58.5%-90.25% of zinc element; 1.9%-7.6% of iron element; 0.65%-1.9% of copper element; 5%-35% of platinum-tungsten powder. The degradable hydrogel coil based on a zinc-iron-copper alloy and the preparation method thereof provided by the present invention have the properties of complete degradability, good biocompatibility, dense packing property, good imaging property, and safety and reliability.

Provided are plate-like alumina particles which each contain elemental titanium and at least one element (A) that is selected from the group consisting of elemental iron, elemental nickel, elemental copper, elemental chromium, elemental cobalt, elemental zinc, elemental scandium, and elemental ruthenium.

The method for producing an oxide sintered body according to the present invention is a method for producing an oxide sintered body using, as a starting material, an oxide containing two or more elements selected from the group consisting of In element, Ga element, and Zn element, the method satisfying the following (a)-(c). (a) The raw material is an oxide having a purity of 6N or more. (b) The grinding / mixing medium is formed from an oxide that does not contain an element other than the element selected as the starting material. And (c) slurrying using ultrapure water as a dispersion medium.

The invention discloses a high-strength welding method suitable for magnesium alloy, and relates to a magnesium alloy welding method. The problem that during existing magnesium alloy vacuum welding, Mg and Zn are prone to volatilizing to generate holes, and the joint strength is reduced is solved. According to the two-step welding process, air is effectively isolated through first-step welding interface welding, generation of an oxidation film in the follow-up heat treatment process is avoided, meanwhile, the welding temperature is lowered through addition of an Al alloy middle layer, and volatilization of Mg and Zn elements in the welding stage is reduced; and the second-step postweld heat treatment promotes sufficient diffusion of interface elements, the problem of uneven element distribution possibly existing in the welding-on stage is solved, the hole defects are further reduced, the strength of a welded joint is remarkably improved, and the method is suitable for high-strength welding of magnesium alloy components.

The invention discloses a creep-resistant magnesium alloy with high elasticity modulus and high damping and a preparation method thereof, and the creep-resistant magnesium alloy with high elasticity modulus and high damping comprises the following components in percentage by mass: 1.2%-3.5% of Zn element, 2.5%-12% of Gd element, 0.5%-6% of Yb element, 0.15%-1.2% of Ni element, 0.3%-0.8% of Mn element, 0-0.5% of Cu element, 0.1%-5% of HRE element and the balance of Mg element. The HRE element is one or more of a Dy element, a Sm element and a Tb element, and the mixing enthalpy delta H of the creep-resistant magnesium alloy with the high elastic modulus and the high damping is-1.1 kJ / mol to-0.2 kJ / mol. The creep-resistant magnesium alloy with high elastic modulus and high damping is suitable for the fields of aerospace, precise instruments, transportation, 3C electronics and the like, and has remarkable technical and economic values.