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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 10. Отображено 10.
29-08-2023 дата публикации

New method for regulating and controlling performance and sensitivity of typical explosives and powders such as RDX by X rays

Номер: CN116660301A
Автор: LIU RUIBIN, ZHANG YING, XIA MIN, LI AN, YANG WEI, YAO YUGUI, YANG FANZHI, GUO WEI, GAN QIANG, LIU YANBO, ZHANG XINYU, REN YEPING, ZHONG LIN
Принадлежит:

The invention relates to a method for rapidly regulating and controlling the performance and the sensitivity of explosives and powders based on X rays, and belongs to the field of regulation and control of the performance and the sensitivity of the explosives and powders. X-ray irradiation is carried out on the explosives and powders for different times, so that chemical bonds of the explosives and powders are fractured to different degrees, the internal structures or molecular forms of the explosives and powders are changed, and the performance and sensitivity of the explosives and powders are induced to change rapidly under specific conditions. A scanning electron microscope (SEM), a Raman spectrum (Raman Spectra), a Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) are used for carrying out crystal structure characterization, crystal form characterization and molecular structure characterization on the explosives and powders ...

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Номер записи: 1
14-07-2023 дата публикации

LaSi2-doped modified ZrB2-SiC composite powder and preparation method thereof as well as thermal protection coating and preparation method thereof

Номер: CN116425566A
Автор: LIU YANBO, MA ZHUANG, MOU GUANGYI, LIU LING, LIU SHAOPU, CHI HUANYU, HE SIYUAN
Принадлежит:

The invention provides LaSi2-doped modified ZrB2-SiC composite powder, a preparation method of the LaSi2-doped modified ZrB2-SiC composite powder, a thermal protection coating and a preparation method of the thermal protection coating, and relates to the technical field of coating preparation. The preparation method comprises the following steps: mixing raw material powder with a binder and water, and carrying out ball milling to obtain ball-milled slurry; the raw material powder comprises LaSi2 powder, ZrB2 powder and SiC powder; the mass ratio of the ZrB2 powder to the SiC powder is (4-8): 1; the content of the LaSi2 powder in the raw material powder is 5-15 wt%; carrying out spray drying on the ball-milled slurry to obtain agglomerated powder; and the agglomerated powder is subjected to induction plasma spheroidizing treatment, and the modified ZrB2-SiC composite powder doped with LaSi2 is obtained. The ZrB2-SiC composite powder is subjected to doping modification by using LaSi2, and ...

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Номер записи: 2
07-04-2023 дата публикации

Recovery method of polydimethylsiloxane column array

Номер: CN115926226A
Автор: TIAN XINCHUN, MA ZHUANG, GAO LIHONG, LIU YANBO, LIU LING, WANG DONG
Принадлежит:

The invention provides a recovery method of a polydimethylsiloxane column array, and relates to the technical field of organic polymer materials. The method comprises the following steps: immersing a collapsed polydimethylsiloxane column array (PDMS column array) in an organic solvent for swelling treatment to obtain a swelled polydimethylsiloxane column array; the swelling ratio of the organic solvent to polydimethylsiloxane is greater than or equal to 1.20; and taking out the swelled polydimethylsiloxane column array from the organic solvent, and drying to obtain a recovered polydimethylsiloxane column array. According to the method, the PDMS column array is recovered by utilizing the swelling effect of the solvent, the recovery efficiency of the PDMS column array is high, the recovery rate can reach 99% or above, and the problem that the PDMS column array cannot be effectively recovered after collapsing in the field is solved; and the process is simple and low in energy consumption and ...

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Номер записи: 3
22-10-2021 дата публикации

一种钙钛矿型高发射率球形团聚粉体的制备方法

Номер: CN111634950B
Автор: 刘玲, 马壮, 柳彦博, 张淑玉
Принадлежит: 北京理工大学重庆创新中心, 北京理工大学

... 本发明属于高发射率材料领域，具体为一种钙钛矿型高发射率球形团聚粉体的制备方法。该方法包括步骤：1)将La2O3、Cr2O3及M的氧化物按LaCr1‑xMxO3计量后放入球磨罐，加入无水乙醇，球磨混合均匀得到浆料，然后将球磨浆料先旋蒸再烘干，得到混合粉体；2)将粉体和分散剂、粘结剂放入球磨罐中球磨得到浆料；3)将浆料送入造粒塔喷雾造粒，得到球形团聚粉体；4)将球形团聚粉体高温热处理，即得。采用本方法制备得到的粉体几乎无杂项，高温化学稳定性好，且粉体发射率高，全波段发射率可达0.90以上，是一种理想的高发射率材料，球形度高、流动性好，粒径分布均匀，满足热喷涂等表面改性技术的使用需求。 ...

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Номер записи: 4
14-03-2019 дата публикации

COMPOSITE COATING LAYER CONTAINING BA2-XSRXSMTAO6 CERAMIC AND PREPARATION METHOD THEREFOR

Номер: WO2019046992A1
Автор: GAO, Lihong, MA, Zhuang, WANG, Fuchi, LIU, Yanbo, ZHENG, Jiayi
Принадлежит:

A composite coating layer containing Ba2-xSrxSmTaO6 ceramic and a preparation method therefor, which relate to the field of ceramic coating layer materials. The composite coating layer is a two-layer structure composed of a metal bonding layer and a ceramic layer, the metal bonding layer being directly deposited on a substrate, and the ceramic layer being deposited on the metal bonding layer; the composite coating layer has a good protective effect against high energy lasers. The method comprises: using a thermal spraying process to sequentially spray the metal bonding layer and the ceramic layer on the substrate, and enabling a Ba2-xSrxSmTao6 powder material to be fully melted and but not decompose during the spraying process by means of adjusting parameters of an atmospheric plasma spraying process so as to successfully achieve the preparation of a Ba2-xSrxSmTao6 ceramic layer. The method has the advantages of a simple process, easy control, high production efficiency and low costs.

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Номер записи: 5
18-07-2023 дата публикации

Antioxidant composite film layer as well as preparation method and application thereof

Номер: CN116445888A
Автор: LIU YANBO, GAO ZHITING, MA ZHUANG, ZHU SHIZHEN, ZHANG ZE, LIU SHAOPU, CHI HUANYU
Принадлежит:

The invention provides an anti-oxidation composite film layer and a preparation method and application thereof, and belongs to the technical field of composite materials. The invention provides an anti-oxidation composite film layer which comprises a base body layer, a SiC thin film middle transition layer and an outer-layer-oxidation-resistant coating layer which are sequentially stacked, and a microstructure is arranged on the surface of the side, making contact with the outer-layer-oxidation-resistant coating layer, of the SiC thin film middle transition layer. The microstructure is formed on the intermediate transition layer of the SiC thin film, the surface area of the intermediate transition layer of the SiC thin film is increased by more than three times through the microstructure, the interface bonding area can be increased, the Van der Waals force acting area is increased, the bonding force is improved, the microstructure is filled with the formed outer layer oxidation resistant ...

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Номер записи: 6
21-04-2023 дата публикации

Ceramic-based composite material as well as preparation method and application thereof

Номер: CN115991605A
Автор: LIU LING, LIU YANBO, MA ZHUANG, XU YASHUANG
Принадлежит:

The invention relates to the technical field of ceramic materials, in particular to a ceramic-based composite material and a preparation method and application thereof. The invention provides a ceramic-based composite material. The ceramic-based composite material comprises ZrB2, SiC and a layered structure substance, the substance with the layered structure is MAX or MAB; m is a transition metal element, A is a third main group element or a fourth main group element, and X is C or N. The invention proposes that MAX or MAB with a layered structure is compounded in the traditional ZrB2-SiC ceramic for the first time, and due to the special structure and good oxidation resistance of MAX or MAB, it is expected that substances with the layered structure are compounded into the ZrB2-SiC composite ceramic material, and the compactness of the material can be improved.

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Номер записи: 7
25-07-2023 дата публикации

W-doped VO2 phase change material, preparation method and application thereof, and temperature alarm

Номер: CN116478661A
Автор: ZHENG BING, LI HONG, LIU YANBO, WANG YIFAN, WANG DONG, BAI TIANYU, LI XIAOYUE
Принадлежит:

The invention provides a W-doped VO2 phase change material, a preparation method and application thereof and a temperature alarm, and relates to the technical field of alarms. The novel temperature alarm is designed according to the principle by utilizing the property that the W-doped VO2 phase change material generates semiconductor phase-metal phase reversible phase change at the temperature of 45-50 DEG C, so that the resistivity of the W-doped VO2 phase change material suddenly changes, the cost expenditure of a temperature sensor part of a single chip microcomputer of a traditional temperature alarm can be reduced, and the cost of the temperature alarm is effectively reduced. Due to the fact that phase change of the materials is utilized to enable the conductivity of the materials to be greatly changed in a cliff mode, the temperature alarm has high sensitivity. Results of repeated fire simulation tests show that the temperature control precision of the temperature alarm can reach ...

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Номер записи: 8
11-07-2023 дата публикации

Method for preparing protective coating on surface of ceramic-based composite material

Номер: CN116410021A
Автор: LIU LING, GAO ZHITING, MA ZHUANG, LIU YANBO, ZHANG ZE, LIU SHAOPU, XU YASHUANG
Принадлежит:

The invention belongs to the technical field of ceramic material protection, and provides a method for preparing a protective coating on the surface of a ceramic-based composite material. The gradient film layer is firstly deposited on the ceramic-based composite material, so that the problems that the thermal expansion coefficient of the protective coating is not matched with that of the ceramic-based composite material and the binding force is poor are better solved; in addition, SiC in the gradient film layer has excellent high-temperature thermal conductivity. Then, the microstructure is etched on the gradient film layer, so that the surface area of the gradient film layer is greatly increased, the Van der Waals force acting area is increased, and the binding force between the substrate and the protective coating is further improved; in addition, the microstructure can release stress in the etching preparation process, so that the probability of generating microcracks of the matrix ...

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Номер записи: 9
18-07-2023 дата публикации

Anti-ablation composite film layer and preparation method and application thereof

Номер: CN116445847A
Автор: LIU YANBO, GAO ZHITING, MA ZHUANG, GAO LIHONG, WANG RUIQIANG, WANG YIFAN
Принадлежит:

The invention provides an anti-ablation composite film layer and a preparation method and application thereof, and belongs to the technical field of composite materials. The invention provides an anti-ablation composite film layer which comprises a substrate layer and an anti-ablation layer which are sequentially stacked, a microstructure is arranged on the surface of the side, making contact with the anti-ablation layer, of the substrate layer, and the anti-ablation layer is made of ZrB2 or ZrB2 composite SiC or ZrC or yttrium silicate. The microstructure is arranged on the surface of the base body, so that the surface area of the base body is increased by more than three times, the Van der Waals force acting area is increased, the binding force is improved, the microstructure is filled with the formed anti-ablation layer, an interlocking structure (mortise and tenon structure) is formed, and the binding force is further increased; the microstructure releases stress at the ablation moment ...

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Номер записи: 10