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Liquid metal solidification in-situ observation device and observation method under microgravity state

A liquid metal, observation device technology, applied in the investigation phase/state change and other directions, can solve the problems of low loading accuracy and efficiency, improve accuracy and efficiency, avoid manual operation, and reduce the possibility of false touch and over-adjustment. Effect

Active Publication Date: 2019-07-19
SOUTHEAST UNIV
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Problems solved by technology

The invention proposes a liquid metal solidification in-situ observation device and observation method in a microgravity state, and observes the liquid metal solidification process in a microgravity suspension state. The operation is simple, and it can solve the problem of existing ultrasonic suspension device samples. The problem of loading accuracy and low efficiency

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  • Liquid metal solidification in-situ observation device and observation method under microgravity state

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Embodiment Construction

[0035] The present invention will be further explained below in conjunction with the embodiments and the drawings:

[0036] An in-situ observation device for solidification of liquid metal in a microgravity state of the present invention includes an ultrasonic levitation system and a sound field visualization system; the ultrasonic levitation system includes a transparent cover 1, an ultrasonic transducer 2, an horn 3, and an acoustic emission End 4, sound reflection end 5, cooling copper tube 6, electric adjustment support 7, support base 8, support rod 9, observation camera 10, ultrasonic generator 11; the sound field visualization system includes light source 12, front convex lens 13, rear Convex lens 14, knife edge 15, observation camera 16.

[0037] The transparent cover 1 is made of optically transparent quartz glass, and is connected to the support base 8 by a reinforced flexible gasket to form a closed cavity; in the cavity, the ultrasonic transducer 2 is fixed on the suppo...

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Abstract

The invention discloses a liquid metal solidification in-situ observation device and an observation method under a microgravity state. The device comprises an ultrasonic suspension system and a soundfield visualization system; the ultrasonic suspension system is used for suspending a liquid metal sample in the air, and the sound field visualization system is used for displaying a generated acoustic standing wave field, and observing the change of the acoustic standing wave field in a liquid metal cooling process in the microgravity state in real time. According to the liquid metal solidification in-situ observation device provided by the invention, in-situ observation can be carried out on the solidification process of a liquid metal under the microgravity state.

Description

Technical field [0001] The invention relates to an in-situ observation device and an observation method for liquid metal solidification in a microgravity state, and belongs to the technical field of material containerless processing. Background technique [0002] The liquid metal studied in the present invention is different from traditional mercury and alkali metal materials. It mainly refers to gallium and its alloys (such as gallium indium alloy, gallium indium tin alloy, etc.) and bismuth-based alloys (such as bismuth indium tin alloy). Class safe and non-toxic low melting point metal material, melting point is near room temperature. Liquid metal has excellent electrical and thermodynamic properties because of its amorphous liquid form. The inherent high thermal conductivity gives liquid metal excellent convection heat transfer capabilities. Liquid metal is used to replace the traditional cooling medium represented by water. Break the capacity limit of traditional cooling te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/02
CPCG01N25/02
Inventor 孙东科王学舟倪中华毛士麟
Owner SOUTHEAST UNIV
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