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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 25. Отображено 25.
25-03-2009 дата публикации

Method for preparing high tension and high conductive pure copper material

Номер: CN0101392359A
Автор: ZHU XINKUN, TAO JINGMEI, LI CAIJU, XU MENGCHUN, SHANG QINGLIANG, YANG PENG, XINKUN ZHU, JINGMEI TAO, CAIJU LI, MENGCHUN XU, QINGLIANG SHANG, PENG YANG
Принадлежит:

The invention provides a method for preparing high-strength and high-conductivity pure copper material. In the method, the copper material goes through recrystallization and annealing at the temperature of 300 DEG C to 700 DEG C for 0.5h to 5h; the copper material is forged at the deformation temperature of below ,minus 100 DEG C with the deformation rate of 10< -5 >/s to 10< 2 >/s so as to cause plastic deformation to the copper material at a low temperature; a drawing method is adopted to continue the plastic deformation to the copper material at a low temperature so as to prepare the pure copper material with a nanometer twin crystal structure. The method can ensure the pure copper material with better strength as well as better conductivity and eliminate the defect that the strength of the copper material is increased, but the conductivity reduced in the prior art. In addition, the strength of the obtained copper material is higher than 450MPa and the conductivity not lower than 90 ...

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Номер записи: 1
27-06-2023 дата публикации

Lithium ion battery silicon carbon film negative electrode material and preparation method thereof

Номер: CN116344750A
Автор: GAO PENG, HUANG MINQUAN, LI CAIJU, YI JIANHONG
Принадлежит:

The invention discloses a lithium ion battery silicon carbon film negative electrode material and a preparation method thereof, and belongs to the field of lithium ion battery negative electrode material preparation. According to the invention, the micro surface state of the rough current collector is regulated and controlled, and the roughness Ra of the current collector is 200nm-1500nm; a magnetron sputtering technology is adopted in a vacuum environment at room temperature, a high-purity graphite target and a high-purity intrinsic silicon target are used as sputtering sources, a 3-9-layer silicon-carbon alternate stacking structure is prepared on a rough current collector with the microscopic surface appearance being tree-shaped, hill-shaped and linear characteristics, and a carbon film is sputtered on the current collector as a first layer; according to the lithium ion battery silicon carbon film negative electrode material prepared by the invention, the silicon layer and the carbon ...

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Номер записи: 2
23-06-2023 дата публикации

High-strength and high-elasticity quaternary copper-nickel-tin-chromium alloy and preparation method thereof

Номер: CN116287856A
Автор: LI CAIJU, YOU YUANQI, LI JIANGNAN, GAO PENG, FENG ZHONGXUE, YI JIANHONG
Принадлежит:

The invention discloses a high-strength and high-elasticity quaternary copper-nickel-tin-chromium alloy and a preparation method thereof, and belongs to the technical field of high-performance copper alloy preparation. The copper alloy consists of the following elements in percentage by weight: 7wt.%-11wt.% of Ni, 7wt.%-11wt.% of Sn and the balance of Cr. Wt.% of Sn: 3 wt.% to 9 wt.%; %, 0.3 wt.%-1.0 wt.% of Cr, and the balance Cu; the preparation method comprises the steps that a Cu-Ni-Sn-Cr alloy cast ingot is prepared through a medium-frequency induction furnace, and then the cast ingot is subjected to homogenization, rolling, solid solution and isothermal aging treatment; compared with a Cu-Be beryllium copper alloy, the Cu-Ni-Sn-Cr alloy strip has the advantages that a finished product of the Cu-Ni-Sn-Cr alloy strip is high in tensile strength and elasticity modulus, the electric conductivity can reach 12-20% IASC, the preparation method is simple, the price is low, the Cu-Ni-Sn-Cr ...

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Номер записи: 3
19-05-2010 дата публикации

Self-propagating high temperature synthesis preparation method of titanium carbide dispersion strengthening copper-based composite material

Номер: CN0101709398A
Автор: Chen Tieli, Li Caiju, Tao Jingmei, Zhou Yun, Zhu Xinkun
Принадлежит:

The invention discloses a self-propagating high temperature synthesis preparation method of a titanium carbide dispersion strengthening copper-based composite material, which utilizes Cu powder, Ti powder and C powder with the granularity less than 100 meshes and the purity larger than 99% as raw materials, wherein the mass ratio of Cu powder to Ti powder to C powder is 50:50-70:30, and the mol ratio of Ti powder to C powder is 1:1. The preparation method comprises the following steps: mixing a certain amount of Cu powder, Ti powder and C powder, then carrying out high energy ball mill for 3-10 hours at room temperature, carrying out cold press molding on the mixed powder, finally adopting electric arc to ignite pressed shapes in a vacuum room to prepare the TiC dispersion strengthening copper-based composite material through the self-propagating high temperature synthesis of the pressed shapes, wherein, the average granularity of TiC granules is 2-8 mu m. The simple self-propagating high ...

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Номер записи: 4
23-06-2023 дата публикации

High-elasticity, high-strength and high-conductivity Cu-Ni-Sn alloy and preparation method thereof

Номер: CN116287857A
Автор: LI CAIJU, GAO JILONG, LI JIANGNAN, GAO PENG, FENG ZHONGXUE, YI JIANHONG
Принадлежит:

The invention discloses a high-elasticity, high-strength and high-conductivity Cu-Ni-Sn alloy and a preparation method thereof, and belongs to the technical field of metal material processing. The high-elasticity, high-strength and high-conductivity Cu-Ni-Sn alloy comprises the following components in percentage by mass: 8%-18% of nickel, 6%-10% of tin, 0.1%-1.0% of silicon, 0.1%-1.2% of niobium, 0.02%-0.5% of yttrium and the balance of copper and other inevitable impurity elements. According to the invention, a microalloying mode is adopted, the components of the copper-nickel-tin alloy are optimized and adjusted, and all the elements have a synergistic effect, so that the strength and the elastic modulus of the Cu-Ni-Sn alloy are remarkably improved, and the conductivity of the copper-nickel-tin alloy is not influenced; the prepared copper-nickel-tin alloy can still keep bright and attractive without darkening after being stored in air for a long time, and can be applied to connectors ...

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Номер записи: 5
19-03-2014 дата публикации

Method for purifying high purify alumina for sapphire crystals

Номер: CN103643290A
Автор: LI CAIJU, TAN JUN, YUAN QIAN, ZHU XINKUN
Принадлежит:

The invention discloses a method for purifying high purify alumina for sapphire crystals, belonging to the technical field of high purify alumina preparation. The method comprises the following steps: preparing granules with average grain sizes of 3-10mm from ordinary high purify alumina powder by adopting a granulator; sintering the granules in a high-frequency induction furnace at a high temperature of 2050-2300 DEG C for 1-20 hours; and determining the dimension of a crucible of the high-frequency induction furnace according to the dimension of a crucible of a crystal growth furnace, thus generating sintered polycrystalline ingots with different weights and dimensions. The method can help purify ordinary high purify alumina into high-quality high purify alumina suitable for sapphire single crystal growth through a simple and stable process, increase the added value of ordinary high purify alumina and reduce the costs of raw materials for producing sapphire single crystals and simultaneously ...

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Номер записи: 6
05-05-2010 дата публикации

Method for preparing titanium diboride dispersion-strengthened Cu-base composites by using mechanical alloying method

Номер: CN0101701300A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, YAN BINGYONG, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, BINGYONG YAN, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a method for preparing titanium diboride dispersion-strengthened Cu-base composites by using a mechanical alloying method, taking Cu powder, TiO2 powder, B2O3 powder and Mg powder with the granularity less than 100 meshes and purity more than 99 percent as raw materials. The method comprises the following steps of: thoroughly mixing the Cu powder, the TiO2 powder, the B2O3 powder and the Mg powder; carrying out high-energy ball-grinding on the mixed powder for 3 to 15 hours at the revolution speed of 1000 to 2000 rpm at room temperature; acid pickling the powder for 2 to 15 hours at the temperature of 20 to 80 DEG C with 1 to 3 mol/L hydrochloric acid to get mixed powder of Cu and TiB2; drying the mixed powder of Cu and TiB2, and carrying out high-energy ball-grinding on mixed powder of Cu and TiB2 for 1 to 3 hours ; cold pressing the mixed powder of Cu and TiB2 for forming; and at last sintering the mixture of Cu and TiB2 for 1 to 3 hours in a resistance furnace ...

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Номер записи: 7
12-05-2010 дата публикации

Method for synthesizing and preparing nano-crystalline titanium carbide ceramic micro-powder at room temperature

Номер: CN0101704673A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a method for preparing a nano-crystalline titanium carbide micro-powder ceramic material, which comprises the following steps of: using Ti powder and C powder of which the particle sizes are smaller than 100 meshes and the purities are more than 99 percent as raw materials; mixing the Ti powder and the C powder evenly in a mole ratio of 1:1; and then performing high-energy ball milling on the mixture for 0.5 to 10 hours at a rotating speed of 1,000 to 2,000 revolutions per minute at the room temperature to obtain the TiC micro-powder ceramic material of which the average grain size is 10 to 65 nanometers and the powder average particle size is 1 to 5 mum. The method adopts a simple high-energy ball milling method to synthesize and prepare the nano-crystalline TiC micro-powder ceramic material through reactions at the room temperature, and has the advantages of no crushing, simple process, low production cost, high product yield and quality and the like.

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Номер записи: 8
25-03-2009 дата публикации

Method for preparing high tension pure copper by using high deformation speed

Номер: CN0101392358A
Автор: TAO JINGMEI, ZHU XINKUN, XU MENGCHUN, LI CAIJU, SHANG QINGLIANG, JINGMEI TAO, XINKUN ZHU, MENGCHUN XU, CAIJU LI, QINGLIANG SHANG
Принадлежит:

The invention provides a method for preparing high-strength pure copper with a high deformation rate. In the method, after the recrystallization and annealing at the temperature of 300 DEG C to 700 DEG C for 0.5h to 5h, the copper material is immersed in liquid nitrogen to be cooled, followed by blastic deformation for 3 times to 20 times at the deformation temperature of below minus 100 DEG C with the deformation rate of 10< 2 > m/s to 10< 5 >m/s, with the deformation direction changed once every 1 time to 2 times of blastic deformation, so as to obtain the high-strength pure copper material containing deformed twin crystals. The high-speed plastic deformation of the pure copper at low temperature can realize that a great deal of deformed twin crystals can be introduced into the pure copper with a face-centred cubic structure so as to ensure the pure copper to have higher strength. As to the method of the invention, through a simple preparation process, pure copper material with the strength ...

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Номер записи: 9
12-05-2010 дата публикации

Method for preparing titanium carbide ceramic micro powder by utilizing self-propagating high temperature synthesis

Номер: CN0101704682A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a method for preparing a titanium carbide micro powder ceramic material by utilizing self-propagating high temperature synthesis. Ti powder and C powder with the granularity being less than 100 meshes and the purity being more than 99% are taken as raw materials. The method comprises the following steps: evenly mixing the Ti powder and the C powder according to the mole ratio of 1:1; carrying out high energy ball mill for 3-10h at room temperature in the revolving speed of 1000-2000r/min; performing cold press molding on the mixed powder after ball mill; igniting and compacting green in a vacuum chamber |by an electric arc to obtain a combustion product; and finally cracking the combustion product to obtain the TiC micro powder ceramic material, wherein the average grain diameter of the power is 2-8mu m. The method of the invention takes pure Ti powder and pure C powder as raw materials, adopts ball mill and self-propagating high temperature synthesis to prepare ...

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Номер записи: 10
19-12-2007 дата публикации

Prepn process of nanometer metal material

Номер: CN0101088677A
Автор: XINKUN ZHU, KUNYU ZHAO, CAIJU LI, ZHU XINKUN, ZHAO KUNYU, LI CAIJU
Принадлежит:

The present invention relates to preparation process of nanometer metal bulk material, and belongs to the field of metal material preparing technology. Soft pure metal powder material is ball milled in a high energy ball mill, with the mixture of the steel balls and metal material powder accounting for 10-50 vol% of the ball mill cavity, so as to fine the crystal grains and form nanometer crystalline metal material, which is then formed into nanometer metal bulk material at room temperature. The process has no sintering, simplicity, low production cost, high production efficiency, high product quality and other advantages.

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Номер записи: 11
09-06-2023 дата публикации

Preparation method of carbon nanotube/graphene copper-nickel layered material

Номер: CN116240599A
Автор: LIU YICHUN, WU SHANGQIAO, CHEN JUN, DONG SHUBO, WANG GUANGMING, LI FENGXIAN, TAO JINGMEI, LI CAIJU, YI JIANHONG
Принадлежит:

The invention discloses a preparation method of a carbon nanotube/graphene copper-nickel layered material, and relates to the technical field of composite materials. An electroplated copper layer is mainly used as a base material, a nickel layer is electrically deposited on the surface of the copper layer, and carbon nano tube/graphene is used as a reinforcing phase for doping. The hardness of the carbon nano tube/graphene copper-nickel layered composite material prepared through the method reaches up to 576.6 HV, the friction coefficient is 0.23, and the carbon nano tube/graphene copper-nickel layered composite material has excellent corrosion resistance. And the method is suitable for the working condition environment with high corrosion resistance and wear resistance. The method can be applied to the fields of ships, automobiles, electronic products and the like.

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Номер записи: 12
12-05-2010 дата публикации

Method for synthesizing and preparing titanium diboride ceramic micropowder by using a high-energy ball-milling alloying method

Номер: CN0101704677A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, YAN BINGYONG, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, BINGYONG YAN, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention provides a method for synthesizing and preparing titanium diboride ceramic micropowder by using a high-energy ball-milling alloying method, comprising the following steps of: using TiO2 powder, B2O3 powder and Mg powder which have the particle sizes less than 100 meshes and the purities more than 99% as raw materials, and then carrying out high-energy ball milling on the mixed powder for 3 to 15 h in the rotation speed of 1000 to 2000 rpm at room temperature after mixing TiO2 powder, B2O3 powder and Mg powder according to the mole proportion of 1:1:5; then, acid washing the mixed powder for 2 to 15 h at the temperature of 20 to 80 DEG C by using hydrochloric acid with the concentration of 1 to 3 mol/l, and drying the mixed powder to obtain high-purity TiB2 powder with the average particle diameter of 1 to 5 mum. The invention has the advantages of no need of pulverization, simple technology, low production cost, high product yield and quality, and the like.

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Номер записи: 13
05-05-2010 дата публикации

Method for preparing titanium diboride dispersed and strengthened copper-based composite material by self-propagating high-temperature synthesis

Номер: CN0101701301A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention provides a method for preparing a titanium diboride dispersed and strengthened copper-based composite material by self-propagating high-temperature synthesis, comprising the following steps of: taking Cu powder, Ti powder and B powder with the granularity less than 100 meshes and the purification more than 99 percent as raw materials, mixing a proper amount of the Cu powder, the Ti powder and the B powder (the mass ratio of the Cu powder to the Ti powder to the B powder is 50:(50-70):30), wherein the mol ratio of the Ti powder to the B powder is 1:2, and carrying out high-energy ball milling for 3-10 hours at room temperature; secondly, cold-pressing and forming mixed powder; and finally igniting and compacting by adopting electric arc in a vacuum chamber and preparing the TiB2 dispersed and strengthened copper-based composite material by self-propagating high-temperature synthesis of compaction, wherein the average granularity of TiB2 granules is 2-8mu m. In the invention ...

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Номер записи: 14
14-07-2010 дата публикации

Method for preparing (TiB2+TiC) dispersion-strengthening copper-based composites by adopting self-propagating high-temperature synthesis

Номер: CN0101775514A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a method for preparing (TiB2+TiC) dispersion-strengthening copper-based composites by adopting self-propagating high-temperature synthesis, comprising the following steps of: mixing a certain amount of Cu power, Ti powder and B4C powder as raw materials (the mass ratio of the Cu powder to the Ti powder to the B4C powder is 50:50-60:40, wherein the molar ratio of the Ti powder to the B4C powder is 3:1) and then efficiently ball-milling mixed powder at high temperature, wherein the granularities of the Cu power, the Ti powder and the B4C powder are less than 100 meshes, and the purities are greater than 99%; then cold molding the mixed powder; and finally preparing the (TiB2+TiC) dispersion-strengthening copper-based composites in a vacuum furnace chamber by adopting electric arc igniting compact through the self-propagating high-temperature synthesis of the compact, wherein the average grain diameter of TiB2 and TiC grains is 2-8 mu m. The invention is used for preparing ...

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Номер записи: 15
19-05-2010 дата публикации

Method for preparing titanium carbide dispersion strengthening copper-based composite material

Номер: CN0101709397A
Автор: Chen Tieli, Li Caiju, Tao Jingmei, Zhao Kunyu, Zhu Xinkun
Принадлежит:

The invention discloses a method for preparing a titanium carbide dispersion strengthening copper-based composite material, which comprises the following steps of: taking Cu powder, Ti powder and C powder as raw materials, wherein the particle sizes of the raw materials are less than 100 meshes and the purities of the raw materials are over 99 percent; performing high energy ball milling on the Ti powder and C powder mixed in a molar ratio of 1:1 at the room temperature for 2 to 20h; adding the Cu powder with a certain proportion into the mixed powder after the ball milling, wherein the mass ratio of the Ti powder to the C powder to the Cu powder is 1:99-20:80; continuously performing the high energy ball milling on the new mixed powder added with the Cu powder at the room temperature for 2 to 10h; performing cold press molding on the mixed powder of the Cu powder, the Ti powder and the C powder after the ball milling; and sintering the mixed powder in a resistance furnace under the protection ...

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Номер записи: 16
14-01-2015 дата публикации

Method for surface nano-crystallization and structure stabilization of metal material

Номер: CN104278137A
Автор: LI CAIJU, XI YANG, ZHANG QIXUAN, YUAN QIAN
Принадлежит:

The invention discloses a method for surface nano-crystallization and structure stabilization of a metal material and belongs to the technical field of surface treatment of materials. The method disclosed by the invention comprises the following steps: by taking the metal material as an object, firstly performing stress relief annealing pretreatment to remove internal stress left by a previous machining process; then putting into a surface mechanical grinding device under vacuum conditions, and repeatedly hitting the surface of the material at high frequency by utilizing a large number of steel balls to perform surface nano-crystallization treatment; further performing pressure relief annealing treatment to remove the internal stress produced in the mechanical grinding treatment; and finally performing high-energy ion injection on the material after surface nano-crystallization to obtain the metal material with a stable surface nano-layer. According to the method disclosed by the invention ...

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Номер записи: 17
14-07-2010 дата публикации

Method for preparing (TiB2+TiC) dispersion-strengthened copper-based composite material by mechanical alloying

Номер: CN0101775513A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a method for preparing a (TiB2+TiC) dispersion-strengthened copper-based composite material by mechanical alloying. The method uses Cu powder, Ti powder and B4C powder with the particle size of less than 100 meshes and the purity of over 99 percent as raw materials and comprises the following steps: mixing the Ti powder and the B4C powder in a molar ratio 3 to 1 and performing high-energy ball milling on the mixed powder at room temperature for 2 to 20 hours; then adding a certain proportion of Cu powder into the mixed powder after the ball milling to ensure that the mass ratio of the Ti+B4C powder to the Cu powder is 1:99-20:80; performing high-energy ball milling on the new mixed powder added with the Cu powder at room temperature for 2 to 10 hours; performing cold-press molding on the mixed powder after the ball milling; and finally sintering pressed blanks in an argon protective atmosphere resistance furnace at the temperature of between 800 and 1,000 DEG C for ...

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Номер записи: 18
12-05-2010 дата публикации

Self-propagation high-temperature synthesizing preparation method of TiB2-TiC complex ceramic micropowder

Номер: CN0101704678A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a self-propagation high-temperature synthesizing preparation method of TiB2-TiC complex ceramic micropowder, which comprises the following steps of: ; uniformly mixing Ti powder and B4C powder according to the mole proportion of 3:1 and then carrying out high-energy ball milling for 3-10 hours at room temperature at the rotating speed of 1,000-2,000rpm, wherein the Ti powder and the B4C powder, with granularity of smaller than 100 meshes and purity of larger than 99 percent, are used as raw materials; then coldly pressing and moulding the ball-milled mixed powder; igniting and pressing by an electric arc in a vacuum chamber to obtain a combustion product; and finally, breaking the combustion product to obtain a TiB2-TiC complex micropowder ceramic material with the powder average grain diameter of 2-8 microns. The TiB2-TiC complex micropowder ceramic material prepared by the pure Ti powder and the B4C powder as the raw materials through ball milling and self-propagation ...

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Номер записи: 19
12-05-2010 дата публикации

Method for synthesizing and preparing titanium diboride-titanium carbide complex-phase ceramic micropowder at room temperature

Номер: CN0101704676A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a method for synthesizing and preparing titanium diboride-titanium carbide complex-phase ceramic micropowder at room temperature, which comprises the following steps: taking Ti powder and B4C powder with the granularity less than 100 meshes and the purity higher than 99% as raw materials, mixing the Ti powder and the B4C powder evenly according to the proportion of 3:1 (mole), afterwards putting a steel ball and mixed powder with the ball-material ratio of 10:1-100:1 into a ball milling tank of a high-energy ball mill in a glove box filled with argon gas, enabling a ball-material mixture to occupy 10-50% of the volume of an internal cavity of the ball milling tank and then carrying out high-energy ball milling for 2-20 hours at room temperature at the rotational speed of 1000-2000 revolutions/minute to form a TiB2+TiC complex-phase ceramic micropowder material with the powder average particle diameter of 1-5mum. The invention adopts a simple high-energy ball milling ...

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Номер записи: 20
26-05-2023 дата публикации

High-strength high-entropy alloy and preparation method thereof

Номер: CN116162842A
Автор: LI CAIJU, WEI JIANPING, XING YUAN, LI JIANGNAN, GAO PENG, YI JIANHONG
Принадлежит:

The invention discloses a high-strength and high-entropy alloy and a preparation method thereof, and belongs to the technical field of alloys. The alloy comprises the following elements in atomic percent: 24%-26% of Mn, 24%-26% of Fe, 24%-26% of Co and 24%-26% of Ni. Performing solid-phase sintering on the ball-milled high-entropy alloy powder material in a vacuum hot-pressing sintering furnace to obtain an initial-state high-strength high-entropy alloy; then performing cryogenic deformation treatment in liquid nitrogen to obtain a deformed high-entropy alloy; and the deformed high-entropy alloy is annealed at the temperature of 500-800 DEG C for 30 min. The crystal structure of the high-strength and high-entropy alloy is a face-centered cube in a room temperature environment, and a large number of submicron-scale precipitated phases exist; and grains can be refined through the cryogenic deformation treatment process, and then part of alloy grains grow through subsequent annealing treatment ...

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Номер записи: 21
11-01-2012 дата публикации

Method for preparing titanium diboride dispersion-strengthened Cu-base composites by using mechanical alloying method

Номер: CN0101701300B
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, YAN BINGYONG, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, BINGYONG YAN, KUNYU ZHAO, XINKUN ZHU
Принадлежит:

The invention discloses a method for preparing titanium diboride dispersion-strengthened Cu-base composites by using a mechanical alloying method, taking Cu powder, TiO2 powder, B2O3 powder and Mg powder with the granularity less than 100 meshes and purity more than 99 percent as raw materials. The method comprises the following steps of: thoroughly mixing the Cu powder, the TiO2 powder, the B2O3powder and the Mg powder; carrying out high-energy ball-grinding on the mixed powder for 3 to 15 hours at the revolution speed of 1000 to 2000 rpm at room temperature; acid pickling the powder for 2 to 15 hours at the temperature of 20 to 80 DEG C with 1 to 3 mol/L hydrochloric acid to get mixed powder of Cu and TiB2; drying the mixed powder of Cu and TiB2, and carrying out high-energy ball-grinding on mixed powder of Cu and TiB2 for 1 to 3 hours ; cold pressing the mixed powder of Cu and TiB2 for forming; and at last sintering the mixture of Cu and TiB2 for 1 to 3 hours in a resistance furnace ...

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Номер записи: 22
04-04-2023 дата публикации

Method for improving wear resistance and conductivity of Cu-Ni-Sn alloy

Номер: CN115896722A
Автор: LI CAIJU, GAO JILONG, LI JIANGNAN, GAO PENG, FENG ZHONGXUE, YI JIANHONG
Принадлежит:

The invention discloses a method for improving wear resistance and conductivity of Cu-Ni-Sn alloy, and relates to the technical field of microelectronic integrated circuit interconnection. The Cu-Ni-Sn alloy is prepared into the thin film through magnetron sputtering, the Cu-Ni-Sn uniform combined thin film with various different components and different application requirements can be prepared by regulating and controlling parameters such as magnetron sputtering power, deposition time and argon flow, and the thin film comprises, by weight, 75%-80% of Cu, 10%-20% of Ni and 0.9%-10% of Sn. A high-flux six-target magnetron sputtering film co-deposition preparation technology is adopted, so that the alloy film has low resistivity and high electromigration resistance, and has a wide passivation interval and low passivation current density compared with an aluminum-based alloy film serving as an interconnection wire material, and the comprehensive performance of the combined film is further ...

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Номер записи: 23
12-05-2010 дата публикации

Method for preparing titanium diboride ceramic micro powder by self-propagation high temperature synthesis

Номер: CN0101704674A
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
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The invention discloses a method for preparing titanium diboride ceramic micro powder by adopting a self-propagation high temperature synthesis method, which uses Ti powder and B powder of which granularities are less than 100 meshes and purities are more than 99 percent as raw materials and comprises the following steps: evenly mixing the Ti powder and the B powder in a molar ratio of 1:2, and then ball-milling the mixture with high energy for 3 to 10 hours at the room temperature and at the rotating speed of 1,000 to 2,000 revolutions per minute; then, cold-pressing and molding the ball-milled mixed powder; later, igniting the pressed blank by electric arc in a vacuum chamber to obtain a combustion product; and finally, crushing the combustion product to obtain a TiB2 micro powder ceramic material, wherein the average grain diameter of the powder is 2 to 8 mu m. The method for preparing the TiB2 micro powder ceramic material by using the pure Ti powder and the pure B powder as raw materials ...

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Номер записи: 24
30-05-2012 дата публикации

Method for preparing (TiB2+TiC) dispersion-strengthened copper-based composite material by mechanical alloying

Номер: CN0101775513B
Автор: CHEN TIELI, LI CAIJU, TAO JINGMEI, ZHAO KUNYU, ZHU XINKUN, TIELI CHEN, CAIJU LI, JINGMEI TAO, KUNYU ZHAO, XINKUN ZHU
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The invention discloses a method for preparing a (TiB2+TiC) dispersion-strengthened copper-based composite material by mechanical alloying. The method uses Cu powder, Ti powder and B4C powder with the particle size of less than 100 meshes and the purity of over 99 percent as raw materials and comprises the following steps: mixing the Ti powder and the B4C powder in a molar ratio 3 to 1 and performing high-energy ball milling on the mixed powder at room temperature for 2 to 20 hours; then adding a certain proportion of Cu powder into the mixed powder after the ball milling to ensure that the mass ratio of the Ti+B4C powder to the Cu powder is 1:99-20:80; performing high-energy ball milling on the new mixed powder added with the Cu powder at room temperature for 2 to 10 hours; performing cold-press molding on the mixed powder after the ball milling; and finally sintering pressed blanks in an argon protective atmosphere resistance furnace at the temperature of between 800 and 1,000 DEG Cfor ...

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Номер записи: 25