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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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Применить Всего найдено 3. Отображено 3.
15-08-2023 дата публикации

Thermal expansion sample support capable of improving measurement stability of horizontal thermal dilatometer and suitable for various shapes and application of thermal expansion sample support

Номер: CN116593524A
Автор: WU GAOHUI, PAN RONGDI, QIAO JING, HAN XIULI, JIANG LONGTAO, YANG WENSHU, JU BOYU
Принадлежит:

The invention relates to a thermal expansion sample support and application, in particular to a thermal expansion sample support capable of improving measurement stability of a horizontal thermal dilatometer and suitable for various shapes and application. The problem that the accuracy of test data of an existing horizontal thermal dilatometer is poor is solved. The sample bracket consists of two sample racks and a support frame, the two sample racks are hung below the support frame; and the sample rack is connected with the support frame through a soft rope. The thermal expansion testing method comprises the following steps: inserting a to-be-tested sample into the open pore of one sample rack, and inserting a standard sample into the open pore of the other sample rack; the supporting frame is erected on an opening of a tubular sample holder of the horizontal thermal dilatometer, thrust is applied to the ejector rod, the to-be-tested sample and the standard sample to ensure close contact ...

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Номер записи: 1
29-08-2023 дата публикации

Method for preparing graphene/aluminum-based composite material with assistance of fatty acid compound containing carboxyl and carbon-carbon double bonds

Номер: CN116652185A
Автор: JU BOYU, SUN JINPENG, HAN ZHICHAO, XIU ZIYANG, YANG WENSHU, WANG PINGPING, WU GAOHUI, JIANG LONGTAO, ZHANG QIANG, CHEN GUOQIN, KANG PENGCHAO, WEI ZENGYAN, QIAO JING
Принадлежит:

The invention discloses a method for preparing a graphene/aluminum-based composite material under the assistance of a fatty acid compound containing carboxyl and carbon-carbon double bonds, and relates to a preparation method of the graphene/aluminum-based composite material. The problem that a defect repairing method of graphene is complex is solved. The method comprises the following steps: weighing graphene, a fatty acid compound containing carboxyl and carbon-carbon double bonds and aluminum metal powder as raw materials; the preparation method comprises the following steps: weighing an aluminum alloy block, dispersing by an ultrasonic-assisted graphene dispersing agent, carrying out ball-milling dispersion on a mixture of graphene and a fatty acid compound containing carboxyl and carbon-carbon double bonds and aluminum metal powder, carrying out preform forming, carrying out aluminum metal infiltration and graphene defect regulation, carrying out severe plastic deformation treatment ...

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Номер записи: 2
30-06-2023 дата публикации

Electrolytic polishing method suitable for zinc and zinc alloy EBSD sample preparation

Номер: CN116359262A
Автор: WU GAOHUI, FU LINLIN, QIAO JING, WEI ZENGYAN, JU BOYU, QIAN JINRUI
Принадлежит:

The invention discloses an electrolytic polishing method suitable for preparing a zinc and zinc alloy EBSD sample, and relates to an electrolytic polishing method for preparing an EBSD sample. The problems that the reaction rate of zinc and zinc alloy in electrolyte is too high, and corrosion and oxidation are prone to occurring are solved. The method comprises the following steps: grinding and mechanically polishing a to-be-polished surface of a sample; a stainless steel sheet is used as a cathode, a beaker is used as an electrolysis container, electrolyte is poured into the beaker, and the cathode is immersed below the liquid level of the electrolyte; the volume fraction of perchloric acid in the electrolyte is 5%, the volume fraction of methanol is 25-45%, and the balance is n-butyl alcohol; rotating the electrolyte at the temperature of-30 DEG C to-40 DEG C by adopting magnetic stirring; the sample is used as an anode to be placed in an electrolysis container and immersed below the ...

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Номер записи: 3