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Liquid gallium alloy and preparation method thereof

A preparation method, the technology of gallium alloy, applied in the field of gallium alloy and its preparation, can solve the problems of strong explosion, limited range of use, spontaneous combustion when exposed to air, etc., and achieve the effects of simplifying the structure, improving operability, and improving efficiency

Inactive Publication Date: 2013-07-03
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Na 22 K 78 The alloy is very active, the preparation of Na 22 K 78 The alloy needs to be carried out under the protection of vacuum or inert gas, and needs to be vacuum-sealed and packaged; otherwise, it will spontaneously ignite if it is exposed to air for a long time, and it will explode violently when it meets water
This puts forward high requirements on the assembly environment and sealing performance of the power generation device, which limits its application range.

Method used

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  • Liquid gallium alloy and preparation method thereof
  • Liquid gallium alloy and preparation method thereof
  • Liquid gallium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Measure 75 parts of gallium with a purity of >99%, 10 parts of indium with a purity of >99%, 7 parts of tin with a purity of >99%, and 8 parts of zinc with a purity of >99% according to mass percentage. First heat gallium to 29°C to make it melt, stop heating, pour liquid gallium into a stainless steel container, and then pour indium, tin and zinc into the stainless steel container. At normal temperature, use a stainless steel spoon to mix and stir until the four raw materials are completely dissolved into liquid, that is, the liquid gallium alloy of the present invention is prepared.

[0040] 1. Measure the freezing point of the prepared liquid gallium alloy: at room temperature, pour the prepared liquid gallium alloy into a small beaker, put the small beaker on the iron stand, and clamp the upper end of the thermometer with the iron clip of the iron stand to make the thermometer The bottom of the thermometer is immersed in the liquid gallium alloy, and the bottom of t...

Embodiment 2

[0061] According to mass percentage, 71.5 parts of gallium with a purity of >99%, 20 parts of indium with a purity of >99%, 1 part of tin with a purity of >99%, and 7.5 parts of zinc with a purity of >99% were measured. First heat gallium to 29°C to melt it, stop heating, pour liquid gallium into a stainless steel container, and then pour indium, tin and zinc into the stainless steel container. At normal temperature, use a stainless steel spoon to mix and stir until the four raw materials are completely dissolved into liquid, that is, the liquid gallium alloy of the present invention is prepared.

[0062] The same test method as in the first embodiment can be used, and the physical characteristics of the liquid gallium alloy prepared in embodiment 2 are as follows: the freezing point is 5°C; at normal temperature 20°C, the density is 6.46g / cm 3 , with a conductivity of 3.4×10 6 S / m. The liquid gallium alloy prepared in Example 2 has obvious corrosion to aluminum; it has no c...

Embodiment 3

[0064] Measure 68 parts of gallium with a purity of >99%, 18.5 parts of indium with a purity of >99%, 11 parts of tin with a purity of >99%, and 2.5 parts of zinc with a purity of >99% according to mass percentage. First heat gallium to 29°C to melt it, stop heating, pour liquid gallium into a stainless steel container, and then pour indium, tin and zinc into the stainless steel container. At normal temperature, use a stainless steel spoon to mix and stir until the four raw materials are completely dissolved into liquid, that is, the liquid gallium alloy of the present invention is prepared.

[0065] The same test method as in Example 1 can be used to obtain, and the physical properties of the liquid gallium alloy prepared in Example 2 are as follows: the freezing point is 5 ° C; at 20 ° C at normal temperature, the density is 6.46 g / cm 3 , with a conductivity of 3.4×10 6 S / m. The liquid gallium alloy prepared in Example 3 has obvious corrosion to aluminum; it has no corrosi...

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Abstract

The invention discloses a liquid gallium alloy and a preparation method of the alloy. The liquid gallium alloy comprises the following components in percentage by weight: 60-75% of gallium, 10-25% of indium, 1-11% of tin, and 1-8% of zinc. The preparation method of the liquid gallium alloy comprises the following steps: firstly weighing gallium, indium, tin and zinc according to the mass percent of each component, heating gallium to 29 DEG C to melt, and stopping heating; pouring the liquid gallium into a stainless steel container, and pouring indium, tin and zinc into the stainless steel container too; at normal temperature, using a stainless steel made spoon to mix and stir the metals uniformly until the four raw materials are totally dissolved to be liquid, and finishing the preparation of the liquid gallium alloy. The liquid gallium alloy can be taken as a working medium for power generation of a liquid-metal magnetic fluid generator.

Description

technical field [0001] The invention relates to a gallium alloy and a preparation method thereof. technical background [0002] The liquid metal magnetic fluid generator uses the highly conductive liquid metal sealed inside the power generation channel as the working medium for power generation, and realizes high power generation density and power generation efficiency. Therefore, the physicochemical properties of liquid metals, such as chemical stability, melting point, density, and electrical conductivity, largely affect the structure, operating performance, and application prospects of liquid metal MHD generators. [0003] At present, the optional working fluids for liquid metal magnetic fluid generators include mercury, U47 (Bi 41 Pb 22 In 18 sn 11 Cd 8 ) and sodium potassium alloy (Na 22 K 78 ). Mercury is the only metal that is liquid and easy to flow at room temperature. Chinese patent CN1202758A uses mercury vapor generated by high-temperature injection as wo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C28/00
Inventor 夏琦李然彭爱武赵凌志李建许玉玉沙次文
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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