398 results about "Fe element" patented technology

The invention relates to a synthesis method of hercynite and has the technical proposal that aluminium compound and iron compound are mixed according to the mol ratio of Al ion to Fe ion of two to one, added with TiO2 fine powder of 1-20wt percent of the mixture obtained from the mixing of the aluminium compound and the iron compound and 1-6wt percent of binding agent to be mixed for 5 to 180 minutes for formation and then dried for 20 to 30 hours under the temperature of 90 to 120 DEG C and warmed up to 1100 to 1700DEG C with a temperature rising speed of 0.5 to 10 DEG C/min in the atmosphere of nitrogen to be kept warm for 5 to 600 minutes and next naturally cooled so as to obtain the hercynite. The invention is characterized by simple technology, low reaction temperature, low cost of raw materials and no environmental pollution; due to the low oxygen content in the atmosphere of the nitrogen, Fe elements exist in the form of Fe<2+> and all aluminium and iron are transformed to FeAl2O4 under the firing temperature; in addition, as the TiO2 is introduced, Ti<4+> can easily enter into crystal lattice of the FeAl2O4 to produce oxygen-iron vacancy concentration and ferric-ion vacancy concentration so as to promote the sintering with apparent porosity less than or equal to 2 percent after sintering.

The invention discloses a zirconium cladding surface resistant to high temperature and oxidation ZrCrFe/AlCrFeTiZr composite gradient coating preparing technology. Ultrahigh vacuum multitarget co-sputtering technique is adopted, a ZrCrFe/AlCrFeTiZr composite gradient alloy resistant to high temperature and oxidation protecting coating is prepared on the surface of a zirconium alloy base body, and the zirconium cladding surface resistant to high temperature and oxidation ZrCrFe/AlCrFeTiZr composite gradient coating preparing technology comprises the steps of predepositional treatment, bias voltage anti-splash washing and ZrCrFe/AlCrFeTiZr composite gradient alloy coating deposition. The preparing process of the composite coating is divided into two steps, the first step is to prepare ZrCrFe gradient transition layer coating, in a deposited ZrCrFe transition layer, the atomic percentage content of Zr element is changed from the gradient of 100 at%-35 at% in the thickness direction, the atomic percentage content of Cr element is changed from the gradient of 0 at%-33 at% in the thickness direction, and the atomic percentage content of Fe element is changed from the gradient of 0 at%-33 at% in the thickness direction; the second step is to prepare a AlCrFeTiZr high-entropy alloy coating, in a deposited AlCrFeTiZr high-entropy alloy coating, the atomic percentage content of Al element is controlled in 0.5 at%-1.0at %, and the atomic percentage of other elements is between 10 at%-35 at%. Bonding force of the coating prepared by the technology is excellent, the surface is dense and uniform, and the coating has excellent performance such as high strength, resistance to high temperature and oxidation and irradiation resistance.

The invention discloses a eucalyptus ecological fertilizer containing Mn and Fe elements and a fertilizing method. The eucalyptus ecological fertilizer containing the Mn and Fe elements is prepared by mixing inorganic nutrients, organic fertilizers and a bonder, and includes following effective ingredients in mass percents of: 7-20 percent of the inorganic nutrients, 4-15 percent of P2O5, 4-20 percent of K2O4, 0.05-0.2 percent of B, 0.05-0.1 percent of Zn, 0.01-0.05 percent of Cu, 0.01-0.2 percent of Mn, 0.01-0.2 percent of Fe, 5-25 percent of organic matters and 0.15-5 percent of the bonder. According to the eucalyptus ecological fertilizer disclosed by the invention, major elements, secondary elements and trace elements are matched according to a reasonable proportion, and a property amount of the organic fertilizers are added, so that not only can the nutrient requirements of the eucalyptus growth be met, the use ratio of the fertilizer is improved, and the wastage rate of the fertilizer is decreased, but also the stress resistance and the lodging resistance of eucalyptus are enhanced, the capacity of resisting natural calamities (such as typhoon and frost), the loss is reduced and the economic benefit is improved.

The invention relates to an alterant of an iron-rich phase in secondary aluminum and an alteration method. The alterant is composed of a [Mn] agent and a [B] agent. The alteration method includes the steps that part of secondary aluminum is heated to form a melt, then the [Mn] agent is added, the remaining secondary aluminum is added after the [Mn] agent melts, the [B] agent is added, refining is carried out after the [B] agent melts, pouring is carried out after standing is carried out for a period of time, and the secondary aluminum obtained after alteration treatment is obtained. According to the alterant and the alteration method, the Fe element in the iron-rich phase can be replaced through the [Mn] agent, the advantage growth orientation of the iron-rich phase is changed, and therefore a needle-like beta-Fe phase is eliminated; meanwhile, the forming temperature of the iron-rich phase can be reduced through B in the [B] agent, the growth time of a primary iron-rich phase is shortened, the growth space of the primary iron-rich phase is reduced, the B can also serve as a surface-active element, and is absorbed to the surface of the iron-rich phase in the initial phase of formation of the iron-rich phase, and growth of the iron-rich phase is restrained, so that through the combined action of the [Mn] agent and the [B] agent, existence of the needle-like iron-rich phase and the primary iron-rich phase can be completely eliminated, the uniform Chinese character type iron-rich phase is obtained; and in addition, the adding amount of the Mn can be greatly reduced, and the mechanical performance and the machining performance of the secondary aluminum can be greatly improved.

The present invention is one kind of white figured glass capable of blocking ultraviolet ray for solar photovoltaic cell assembly with crystalline silicon cell and non-crystalline silicon electrode plates and its production process. The white figured glass is made of material with very low Fe element content and added CeO2, and has very low ultraviolet ray transmittance. Its production process includes sorting material, compounding material, mixing, smelting, rolling, annealing and other steps.

The invention provides a degradable corrosion-resistant high-toughness Zn-Fe-X zinc alloy for a human body and application thereof and relates to the field of medical implant materials. The zinc alloy contains a Zn element, a Fe element and an X element, wherein the X element is at least one of Mg, Ca and Sr, the mass percent of Zn element is 89.92-99.997%, the mass percent of Fe element is 0.002-10%, and the mass percent of X element is 0.001-0.08%. According to the zinc alloy provided by the invention, the cost of added materials is low, degradation products of all ingredients of a prepared alloy material can be degraded through human body metabolism, the corrosion resistance is far higher than that of a magnesium alloy, the degradation rate is greatly lowered, a longer-time mechanical support can be provided, and the strength and toughness of the alloy material are good.

The invention discloses a 6A02 aluminum alloy round ingot. The aluminum alloy material is composed of, by weight percentage, 0.35-0.5% of Cu, 0.6-0.75% of Mg, 0.2-0.3% of Mn, >/=0.25% of Fe, 0.65-1.0% of Si, </=0.15% of Zn, </=0.15% of Ti, </=0.1% of other total, and the balance Al, and the total is 100%. A production process of the 6A02 aluminum round ingot includes steps of burdening, smelting, refining, casting and cast rod examining. The technical scheme further determines component parameters of the 6A02 aluminum alloy round ingot within a national standard range, reduces content of Zn and Fe elements, and can lower brittleness of castings, improve cracking resistance and reduce tendency, produced aluminum alloy is high in plasticity and good in anticorrosion performance.

The invention relates to a high-strength cast aluminum-silicon alloy for an engine body and a preparation method thereof, belonging to the field of metal materials. The alloy comprises the following components in percentage by weight: 12.0-14.0% of Si, less than 0.3% of Ni, 3.0-5.0% of Cu, 0.3-0.8% of Fe, 0.4-0.8% of Mn, less than 0.4% of Mg, 0.1-0.2% of Ti, less than 0.27wt% of Zr and balance of Al. Heat treatment parameters are as follows: the solution treatment is carried out at 510+/-5 DEG C for 5-8h and then water quenching is carried out at room temperature; and the aging treatment is carried out at 160+/-5 DEG C for 6-10h and then air cooling is carried out. The tensile strength and the yield strength of the alloy at room temperature after heat treatment respectively reach 316-336MPa and 245-263MPa, the elongation of the broken alloy reaches 0.72-0.83%, and the Brinell hardness reaches 155-166HBW to the maximum. Compared with the similar alloys, the alloy of the invention has the advantages of high mechanical properties, low content of Ni elements, reduction of content of noble elements in the alloy, wider allowed fluctuation range of content of Fe elements, good cast ingot quality, simple processes and strong operability.

The invention discloses a method for preparing multi-element doping lithium iron phosphate by taking ferrous metallurgy sludge as main raw material, belonging to the preparation technical filed of cathode material of lithium ion batteries. In the method, Fe-base multi-element alloy phase containing multiple doping elements is obtained from the ferrous metallurgy sludge by a reduction and magneticseparation method, the Fe-base multi-element alloy phase is oxidized to obtain composite oxide which is Fe source and a multi-doping-element source, Li and P are added in by chemical metering, and multi-element doping lithium iron phosphate is synthesized by roasting under the protection of inert gas such as N2 or Ar. The Fe element and multiple doping elements (a plurality kinds of Zn, Cr, Ni, Mo, V, Mn, Ti or all) for preparing the multi-element doping lithium iron phosphate are from the ferrous metallurgy sludge, thereby overcoming the limitation that the raw material for preparing the multi-element doping lithium iron phosphate depends on various chemical agents singly, providing a new pathway for high value-added utilization of the ferrous metallurgy sludge while reducing the preparation cost.

The invention discloses a flexible metal substrate connected with a back electrode of a solar battery and a fabrication method thereof. The flexible metal substrate has a structure made of stainless steel strip/copper/nickel/nickel-molybdenum alloy, wherein a nickel layer and a nickel-molybdenum alloy coating layer serve as diffusion barrier layers which are both multi-layer coating layers; and the mass content of molybdenum in the nickel-molybdenum alloy coating layer in the diffusion barrier layers is gradually increased from 10% to 80% layer by layer along the growth direction of the coating layer. Therefore, the diffusion of copper and Fe element in the steel strip can be effectively prevented, no new harmful elements are introduced, and the nickel-molybdenum alloy with high molybdenum content can enhance the bonding force between the substrate and a back electrode (Mo layer). Meanwhile, a Cu layer serves as a main current conduction layer, so that the Mo layer is only used as theback contact layer capable of forming good ohmic contact with an absorption layer. The flexible metal substrate used as the substrate of a CIGS (copper indium gallium selenide) solar battery can greatly lower the requirement on the thickness of the Mo layer, and the flexible substrate described in the invention can be manufactured continuously with low cost and high efficiency on a continuous electroplating production line.

A catalyst for production of a carbon fiber is obtained by dissolving or dispersing [I] a compound containing Fe element; [II] a compound containing Co element; [III] a compound containing at least one element selected from the group consisting of Ti, V, Cr, and Mn; and [IV] a compound containing at least one element selected from the group consisting of W and Mo in a solvent to obtain a solution or a fluid dispersion, and then by impregnating a particulate carrier with the solution or the fluid dispersion. By means of a step of bringing a carbon source into contact with the catalyst in a vapor phase, the carbon fiber is obtained which is tubular and in which a graphite layer is approximately parallel with the carbon fiber axis, and a shell is in a multi-walled structure.

The invention discloses a method for preparing a CuFe alloy material with different Fe contents by adopting vacuum induction smelting, and belongs to the technical field of nonferrous metal alloys. The method mainly comprises the following steps of proportioning, charging, vacuumizing, smelting, casting and discharging from a furnace. According to the method, the CuFe alloy is prepared by adoptinga vacuum induction melting method, wherein the Fe element is added in the form of a CuFe mother alloy, the CuFe alloy prepared through the method has the advantages of compact structure, few pores and inclusion, and no macroscopic and microscopic segregation and other defects.

The invention discloses a corrosion-resistant and high-strength and toughness Zn-Fe-Li-based zinc alloy capable of being degraded in a human body and an application of the corrosion-resistant and high-strength and toughness Zn-Fe-Li-based zinc alloy, relates to field of medical implantation materials, and provides the corrosion-resistant and high-strength and toughness Zn-Fe-Li-based zinc alloy which is low in cost of added materials, high in strength, good in plasticity and controllable in degradation rate, has non-expanding and non-migrating degradation products and can be simultaneously degraded in the human body against the defects in the prior art. The zinc alloy comprises Zn, Fe and Li elements, wherein the content of the Zn element in mass percentage is 80-99.997%, the content of the Fe element in mass percentage is 0.002-10%, and the content of the Li element in mass percentage is 0.001-10%. The cost of the materials added into the zinc-based alloy disclosed by the invention is low, the degradation products of various components in the prepared alloy material can be degraded in the human body by metabolism, the corrosion resistance is much higher than that of a magnesium alloy, the degradation speed is greatly reduced, the mechanical support can be provided for a longer time, and the alloy material has good strength and toughness.

The invention discloses a high-elastic copper-chromium-zirconium alloy and a processing technology thereof. By improving the strength and elasticity of the copper-chromium-zirconium alloy wire, the electrical conductivity does not decrease significantly, so that it can meet the requirements of high strength, elasticity and electrical conductivity, such as conductive springs. The copper chromium zirconium alloy, its mass percentage is: Cr 0.5~1.2%, Zr 0.05~0.5%, 0.2 <x(x为si、ti两种元素或si、ti、fe三种元素)<1.5%，余量为cu。其中，si、fe元素提高合金强度，ti元素提高合金的弹性性能。该合金经过以下工艺流程：a连铸、b固溶、c轧制、d时效、e拉拔、f成品退火、合金丝材成品。所制备合金的抗拉强度σ_{b can reach 680~780MPa, the plastic elongation δ is 2~6%, the electrical conductivity is 68~75%IACS, and the hardness (Hv) is greater than 165.</x(x为si、ti两种元素或si、ti、fe三种元素)<1.5%，余量为cu。其中，si、fe元素提高合金强度，ti元素提高合金的弹性性能。该合金经过以下工艺流程：a连铸、b固溶、c轧制、d时效、e拉拔、f成品退火、合金丝材成品。所制备合金的抗拉强度σ}

The invention provides a method for producing RE510L steel of a thin specification based on an ESP sheet billet continuous coasting and rolling procedure. The method includes the steps that raw materials are selected, and the raw materials comprise, in percentage by mass, 0.03-0.07% of C, 0.10-0.40% of Si, 0.90-1.40% of Mn, 0.02-0.04% of Als, 0.008-0.020% of Ti, 0.01-0.03% of Nb, less than or equal to 0.0030% of S, less than or equal to 0.015% of P, less than or equal to 0.004% of N and the balance Fe elements; the raw materials are subjected to converter smelting and LF furnace and RH furnace refining; molten steel formed through RH furnace refining generates hot rolling strip steel of different thicknesses through an ESP production line; in the ESP production line, the rough rolling outlet temperature is 920-980 DEG C, the finish rolling outlet temperature is 800-870 DEG C; the hot rolling strip steel is cooled in a front segment laminar flow cooling manner, and the hot rolling strip steel is cooled to 550-620 DEG C and then enters a recoiling machine to be coiled into coiled strip steel; and after the coiled strip steel is cooled, leveling, coiling and entering warehouse are performed by adopting the leveling quantity of 1-2.0%. By means of the method, problems that traditional hot rolling is high in cost, energy consumption is large and the like are solved.

The invention discloses a method for detecting total iron content in iron ore by using an improved internal standard method combined with laser-induced-breakdown spectroscopy. The method comprises the following steps: adding different masses of analytically pure iron trioxide to a to-be-detected iron ore sample A, cladding and tabletting to obtain a sample B by using polyethylene powder; collecting data at different positions on the sample B by using a laser-induced-breakdown spectroscopy system; carrying out qualitative analysis on the iron ore by combining with characteristic spectral line information of an Fe element in a database for national institute of standards and technology (NIST); sorting out the characteristic spectral line of the Fe element; selecting FeI438.5813nm as an analytical line, and the MnI405.5210nm as an internal standard line according to the selection criteria of the analytic line and an internal standard line; building a linear equation by taking the strength difference of two spectral lines as a Y axis and the concentration gradient of Fe in the sample B as an X axis, wherein the intercept obtained from a straight line by extension and an X axis is the mass percent of the Fe element. The method is simple to operate, environment-friendly, easy to process data, and high in accuracy.

The invention provides a preparation method of a carbon nano-Li2FeSiO4 composite cathode material. The preparation method comprises the following steps of: uniformly loading different contents of silica on the surface of a carbon nanomaterial, taking a carbon nano-silica compound as a template, dissolving the carbon nano-silica compound in ethanol according to the molar ratio of Fe element to Si element to Li element of 1: 1: 2 and carrying out uniform ultrasonic mixing; stirring the mixing liquid at 60 DEG C till the ethanol is completely volatilized, uniformly grinding the obtained solid in an agate mortar, and tabletting the powder obtained after grinding; and heating the tablets in an inert atmosphere to 550-650 DEG C and calcining at constant temperature for 5-10h to obtain the carbon nano-Li2FeSiO4 composite cathode material with a core-shell structure.