669results about How to "Improve crystal structure" patented technology

Zirconium phosphate particles are synthesized by providing a solution of zirconium oxychloride in an aqueous solvent, adding at least one low molecular weight, oxygen containing, monofunctional, organic additive to the solution, and combining this solution with heated phosphoric acid or a phosphoric acid salt to obtain zirconium phosphate particles by sol gel precipitation.

Disclosed herein are a dot-patterned structure for magnetic recording bits and a magnetic recording medium provided therewith. The former exhibits high functionality and high performance owing to good crystallinity. The dot-patterned structure is composed of a first layer, which is continuous, and a second layer, which is discrete. The magnetic recording medium having a dot-patterned recording layer is formed by the steps of treating an underlying layer by lithography, thereby forming grooves, filling the grooves by epitaxial growth with the same material as the underlying layer, removing the photoresist used for lithography in a solvent, thereby forming pits, and filling the pits by epitaxial growth with a magnetic film as the recording layer.

A method for treating a film of material, which can be defined on a substrate, e.g., silicon. The method includes providing a substrate comprising a cleaved surface, which had a porous silicon layer thereon. The substrate may have a distribution of hydrogen bearing particles defined from the cleaved surface to a region underlying said cleaved surface. The method also includes increasing a temperature of the cleaved surface to greater than about 1,000 Degrees Celsius while maintaining the cleaved surface in a etchant bearing environment to reduce a surface roughness value by about fifty percent and greater. Preferably, the value can be reduced by about eighty or ninety percent and greater, depending upon the embodiment.

The invention discloses a method for precipitating and stabilizing As from As-containing solution. According to the method, ferrous salt is used as As precipitator; through the air oxidation in the As-containing solution in a weak acid condition, Fe<2+> is oxidized into Fe<3+>; and Fe<3+> reacts with As to generate precipitate with high stability and low As leaching toxicity. The method is simple in technology, and generates the precipitate which is ferric arsenate crystalline compound-scorodite crystal FeAsO4. 2H2O under the conditions that the pH value is 4-6, the temperature is 70-95 DEG C, the molar ratio between Fe and As is 1-1.5, the air flow rate is 120-200L/h and the reaction time is 5-7h; the precipitate As has the leaching toxicity concentration of 1-2mg/L which is lower than the limit value of Identification Standards for Hazardous Wastes-Identification for Extraction Toxicity (GB 5085.3-2007); and the harmless stabilizing treatment for the As-containing solution can be realized.

The invention discloses a mixed positive electrode material, a positive plate using the same, and a lithium ion battery. The mixed positive electrode material comprises the following component by weight: 50-90 parts of a nickel-cobalt-manganese ternary material and 10-50 parts of lithium-manganese-iron phosphate. The mixed positive electrode material provided by the invention combines the nickel-cobalt-manganese ternary material with high energy density and lithium-manganese-iron phosphate with high safety performance, and plays complementary advantages of nickel-cobalt-manganese and lithium-manganese-iron phosphate, so that comprehensive performances of the positive electrode active material are improved. The positive plate prepared by using the mixed positive electrode material increases the safety performance and cycle performance of the lithium ion battery, increases average voltage of the lithium ion battery, and keeps relatively high energy density; and the lithium ion battery using the positive plate has excellent electrochemical performances, high energy density and high safety performances and long cycle life, and is suitable for popularization and application.

A ceramic capacitor comprising at least a dielectric ceramic layer and at least a graphene electrode layer deposited on the ceramic layer, wherein the graphene electrode layer has a thickness no less than 2 nm and consists of a graphene material or a graphene composite material containing at least 0.1% by weight of a graphene material dispersed in a matrix material or bonded by a binder material, wherein the graphene material is selected from (a) a plurality of single-layer or multi-layer pristine graphene sheets having less than 0.01% by weight of non-carbon elements, or (b) one or a plurality of a non-pristine graphene material having at least 0.01% by weight of non-carbon elements, wherein the non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof.

A perpendicular magnetic recording medium for enabling high density recording is disclosed. The perpendicular magnetic recording medium includes a substrate on which a soft magnetic underlayer, a seed layer made of a non-crystalline material, an underlayer made of Ru or an Ru alloy including Ru as a main component, and a recording layer including a first magnetic layer and a second magnetic layer. The first and second magnetic layers include a plurality of magnetic grains having easy magnetization axes in a substantially perpendicular direction with respect to the substrate surface, and first and second nonmagnetic non-soluble phases segregating the magnetic grains of the first and second magnetic layers, respectively. The first magnetic layer includes the first non-soluble phase at a first atomic concentration that is higher than a second atomic concentration of the second non-soluble phase in the second magnetic layer.

The invention provides an Al-Fe-Ba-RE aluminum alloy, and a preparation method of the Al-Fe-Ba-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

The invention provides an Al-Fe-Tl-RE aluminum alloy, and a preparation method of the Al-Fe-Tl-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

The invention provides an Al-Fe-Bi-RE aluminum alloy, and a preparation method of the Al-Fe-Bi-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

The invention provides an Al-Fe-Ni-RE aluminum alloy, and a preparation method of the Al-Fe-Ni-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

The invention provides an Al-Fe-Ta-RE aluminum alloy, and a preparation method of the Al-Fe-Ta-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

The invention relates to a perovskite solar cell with interface modification layers. The cross-sectional structure of the perovskite solar cell includes a transparent conductive substrate, a first transmission layer, a perovskite active layer, a second transmission layer and a back electrode; at least one first interface modification layer is disposed between the perovskite active layer and the first transmission layer; and no or at least one second interface modification layer is disposed between the perovskite active layer and the second transmission layer. The invention also discloses a preparation method of the perovskite solar cell. According to the method, the interface modification layers are additionally arranged between the perovskite active layer and transmission layers of a perovskite solar cell, so that the perovskite solar cell with the interface modification layers can be prepared; the surfaces of the transmission layers are passivated; the crystal structure of the perovskite is optimized; ion migration in the perovskite active layer is suppressed to a certain extent; and therefore, the photoelectric conversion efficiency and long-term stability of the perovskite cellare improved.

The invention provides an Al-Fe-W-RE aluminum alloy, and a preparation method of the Al-Fe-W-RE aluminum alloy. The method comprises the steps that: (a) an aluminum alloy ingot is cast; (b) the aluminum alloy ingot is subjected to a homogenization treatment; and the obtained aluminum alloy ingot is rolled, such that an aluminum alloy rod material is obtained; (c) the aluminum alloy rod material obtained in the step (b) is subjected to a batch-type annealing treatment; and (d) the aluminum alloy rod material obtained in the step (c) is subjected to an aging treatment, such that aluminum alloy is obtained. The invention also provides a power cable. According to the invention, through the selection and control over added elements and the adoption of a reasonable preparation process, the obtained aluminum alloy is provided with good comprehensive performance.

The invention provides a technology for processing high strength large hexagon-headed bolt used for steel structure. The invention relates to a technology for processing high strength connecting piece. High frequency induction current hot forging and cold extruding are adopted, so as to produce a bolt. The invention is on the basis of patent application with patent application number of 200810020090.5, high frequency induction heating is adopted in hot forging, frequency thereof is controlled to be 20000-50000Hz, and the advantages of high frequency induction heating that speed is fast and heating is uniform are utilized, so that work piece surface can obtain uniform tissue and properties from center part to the surface, heating uniformity of work piece is improved, better crystal phase structure can be obtained, and high strength bolt with better property can be obtained.

The invention relates to a method for stripping a laminated inorganic material, which comprises the following steps of: firstly preparing a laminated inorganic material organic intercalation compound, then decomposing the organic substance at the interlayer of the solid of the laminated inorganic material organic intercalation compound or the laminated inorganic material organic intercalation compound added into a proper solution within short time under the condition of ultrasonic waves or microwaves, escaping from the interlayer of the laminated inorganic material so as to rapidly strip the laminated inorganic material, and finally separating, washing, drying and grinding to obtain a product. By using the method, not only the laminated inorganic material can be stripped within short time, but also the good crystal structure of the laminated inorganic material can be kept, so that the traditional application of the laminated inorganic material is qualitatively improved, and the value is doubled and redoubled.

The invention provides a phosphorus modification method of a high-alkali-metal-ion-content ZSM-5 molecular sieve. The method is characterized by comprising mixing a phosphorus-containing compound selected from one or more of phosphoric acid, diammonium phosphate, ammonium biphosphate and ammonium phosphate with a high-alkali-metal-ion-content ZSM-5 molecular sieve to obtain a mixture with at least 0.1 wt% of phosphorus-loading content, wherein phosphorus is counted in terms of P2O5, drying and calcinating the mixture, carrying out an ammonium exchange process and a washing process to make the alkali metal ion content no more than 0.10 wt%, performing drying, and carrying out hydrothermal aging at the temperature of 400-1000 DEG C in a 100% of vapor condition. The obtained phosphorus-containing ZSM-5 molecular sieve is high in total acid amount, is excellent in cracking conversion rate and propylene selectivity, and is good in hydro-thermal and active stability.

A coated lithium-rich manganese base material and a preparation method thereof relate to the field of lithium ion battery. A coated lithium-rich manganese base material for lithium ion battery anode material comprise chemical molecules of a coated layer Li (NiaMn2-a) O2 and a main phase Li[LixNiyCo1-x-y-z Mnz]O2. The preparation method comprises steps of: (a) preparing soluble nickel, cobalt and manganese salt into a mixed solution, and preparing soluble nickel and manganese salt into a mixed solution; (2) preparing an alkali solution; (3) adding the alkali solution and the mixed solution containing nickel, cobalt and manganese into a reaction kettle, stirring fiercely to obtain a coprecipitation, then pumping the mixed solution containing nickel and manganese salt and the alkali solution, and carrying out a co-precipitation reaction, aging, treatment by a centrifugal machine and drying to obtain a coated precursor M (OH)2 (M=Ni, Co, Mn); and (4) uniformly mixing the precursor with a lithium source, carrying out segment sintering, and then sieving to obtain the lithium-rich manganese base material. The invention provides a lithium ion battery anode material with good cycle performance, and the process has the advantages of simpleness, low production cost, short production cycle and stable product performance.

During solvent dewaxing, the mixture of wax containing material oil, dewaxing solvent and dewaxing assistant is made to pass through two stages of dewaxing material oil and deoiling cerate; the filtrate from the deoiling stage is returned to the dewaxing stage completely; and dewaxed oil and deoiled wax are obtained after recovering the solvent. The dewaxing assistant is ashless polymer mixture of high branched chain degree polymer and low branched chain degree polymer. The method improves the crystal structure of wax, raises oil-wax separating effect, raises dewaxed oil yield and filtering speed obviously, lowers the solvent ratio and lowers the oil content in cerate. The cerate may be used in producing paraffin or microcrystal wax.

The invention discloses an ultraviolet light detector with a titanium dioxide nanotube array serving as a matrix and a preparation method thereof. The ultraviolet light detector comprises a titanium sheet substrate (1), the titanium dioxide nanotube array (2), an insulating layer (3) and a graphene film (4) sequentially from bottom to top, extraction electrodes (5) are arranged on the lower surface of the titanium sheet substrate (1) and the upper surface of the graphene film (4) respectively and are connected with a current measurer (6). The titanium dioxide nanotube array is prepared on the titanium sheet substrate by an anodizing method, oxygen vacancy of the array prepared by the method is less, and mismatch of stoichiometric ratio is avoided. Therefore, titanium dioxide is good in crystalline structure after annealing to lead to high response, low dark current and high ultraviolet-to-visible rejection ratio.