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A low melting point liquid metal and a method for continuously reducing the melting point of the liquid metal from five yuan to eight yuan

A technology of liquid metal and low melting point, which is applied in the field of alloy materials and can solve problems such as the failure of liquid metal to reach

Active Publication Date: 2022-07-19
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the liquid state of Ga-based liquid metals at room temperature is closely related to its low melting point. However, the melting point of liquid metals is far from being able to adapt to various complex applications, so it is imminent to develop liquid metals with lower melting points. of

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  • A low melting point liquid metal and a method for continuously reducing the melting point of the liquid metal from five yuan to eight yuan
  • A low melting point liquid metal and a method for continuously reducing the melting point of the liquid metal from five yuan to eight yuan
  • A low melting point liquid metal and a method for continuously reducing the melting point of the liquid metal from five yuan to eight yuan

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preparation example Construction

[0057] The present invention also provides a method for preparing the above-mentioned liquid metal, comprising the following steps:

[0058] (1) Grind the alloy raw material with sandpaper to remove the oxide scale, put it in the sample bag, add absolute ethanol, and clean it with an ultrasonic cleaner;

[0059] (2) drying the cleaned alloy raw material, then take a total weight 6g sample in a small test tube (inner diameter 9mm, outer diameter 12mm, height 11cm);

[0060] (3) The small test tube containing the sample is vacuumed with a tube sealer, and then heated with an alcohol lamp and the test tube is continuously tapped until the sample is completely melted;

[0061] (4) Take out the test tube with the melted sample, seal it, and place it in a temperature-controlled ultrasonic machine, set the temperature to 70°C for 1 hour until the sample is completely melted and uniform, and finally prepare liquid metal.

[0062] In the present invention, the method for testing the a...

Embodiment 1

[0064] In this embodiment, the five-element liquid metal system ((Ga 77.2 In 14.4 Sn 8.4 ) 97 Zn 3 ) 99 Cd 1(atomic percentage, 74.135% of gallium, 13.828% of indium, 8.067% of tin, 2.97% of zinc, 1% of cadmium), the preparation method thereof includes the following steps:

[0065] (1) The alloy raw material for preparing liquid metal is polished with sandpaper to remove the oxide scale, placed in the sample bag, added with absolute ethanol, and cleaned with an ultrasonic cleaner;

[0066] (2) dry the cleaned alloy raw material, then take by weighing the total weight 6g sample, according to the order of Cd, Zn, Sn, In, Ga, be installed in the small test tube (inner diameter 9mm, outer diameter 12mm, height 11cm);

[0067] (3) Vacuum the small test tube containing the sample with a tube sealing machine, then heat the test tube with an alcohol lamp and keep tapping the test tube until the sample is completely melted; it takes 5 to 6 minutes to extract the vacuum in the tub...

Embodiment 2

[0070] In this embodiment, the five-element liquid metal system ((Ga 77.2 In 14.4 Sn 8.4 ) 97 Zn 3 ) 99 Mg 1 (atomic percentage, 74.135% of gallium, 13.828% of indium, 8.067% of tin, 2.97% of zinc, 1% of magnesium), the preparation method thereof includes the following steps:

[0071] (1) The alloy raw material for preparing liquid metal is polished with sandpaper to remove the oxide scale, placed in the sample bag, added with absolute ethanol, and cleaned with an ultrasonic cleaner;

[0072] (2) dry the cleaned alloy raw material, then take by weighing the total weight 6g sample, according to the order of Mg, Zn, Sn, In, Ga, be installed in the small test tube (inner diameter 9mm, outer diameter 12mm, height 11cm);

[0073] (3) Vacuum the small test tube containing the sample with a tube sealing machine, then heat the test tube with an alcohol lamp and keep tapping the test tube until the sample is completely melted; it takes 5 to 6 minutes to extract the vacuum in the ...

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Abstract

The invention discloses a liquid metal with a low melting point and a method for continuously reducing the melting point of the liquid metal from five to eight elements. ; GaInSnZnAl melting point temperature 6.68 ℃. The melting point temperature of GaInSnZnAlMg in the six-element system is 6.29℃, the melting point temperature of the seven-element system GaInSnZnAlMgCd is 6.08℃, and the melting point temperature of the eight-element system GaInSnZnAlMgPbCd is 6℃. The invention reduces the melting point temperature of the liquid metal by adjusting the components and proportions by means of micro-addition, the components are clear, the experiment is simple, and only simple vacuum smelting is required to make it uniformly melted, and it is a kind of liquid metal that can ensure good performance of the liquid metal. Melting point method.

Description

technical field [0001] The invention relates to the field of alloy materials, in particular to a liquid metal at low temperature and a preparation method and application thereof. Background technique [0002] In recent years, room temperature Ga-based liquid metal has gradually appeared in people's field of vision as a new type of multifunctional material. Because of its combination of metal and liquid properties, it has shown unparalleled advantages in electrical and thermal conductivity and flexible electronic products. Compared with Hg, which is liquid at room temperature, room temperature Ga-based liquid metal has the advantages of low vapor pressure, safety and non-toxicity, stable physical and chemical properties, and easy recovery, making it an excellent choice to replace Hg. At present, room temperature Ga-based liquid metals have been used in many key technical fields such as flexible electronics, central processing unit (CPU) heat sinks, flexible robots, and flexib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C28/00C22C1/02
CPCC22C28/00C22C1/02
Inventor 王利民曹开斌冯士东卢栋栋
Owner YANSHAN UNIV