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A kind of preparation method of low-melting point five-element gallium-based liquid alloy

A technology of liquid alloy and low melting point, which is applied in the field of material metallurgy, can solve problems such as the gap between gallium-based liquid alloys, achieve the effect of simple preparation method, solve the threat of environmental pollution, and have wide application prospects

Active Publication Date: 2022-04-08
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the melting point of mercury (–38.87°C), gallium-based liquid alloys still have a large gap, and cannot replace mercury in application scenarios that require lower temperatures

Method used

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  • A kind of preparation method of low-melting point five-element gallium-based liquid alloy
  • A kind of preparation method of low-melting point five-element gallium-based liquid alloy
  • A kind of preparation method of low-melting point five-element gallium-based liquid alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] It was accurately referred to with analysis of the balance to be accurately referred to, indium 2.4420 g, tin 0.7235 g, zinc 0.0403 g and 0.0200 g of aluminum (about 0.1% aluminum content). Gallium, indium, tin and zinc first addition in graphite crucibles, and finally placed in aluminum. The graphite crucible is moved into the atmosphere, and the high purity argon protection is passed after vacuum. The temperature was warmed to 700 ° C and held for 1 h. The graphite crucible is taken out with the furnace. After standing for 2 hours, the surface oxide film was removed, and a low melting point gallium-based liquid alloy was obtained.

Embodiment 2

[0019] The whole bottle of raw material is first placed in a blast drying tank, warmed to 60 ° C until all melts, and weigh 50.3360 g of liquid gallium, added to the polytetrafluoroethylene crucible. Then, the analysis is accurately referred to as the analysis of 7.3210 g, tin 2.1610 g, zinc 0.1201 g and 0.0620 g (aluminum content of about 0.1%), and added to the polytetrafluoroethylene crucible containing molten gallium. Graphite rods were stirred to solid-state metal feedstocks were completely dissolved in molten gallium at 60 ° C, and the oxide film was removed after 4 h, resulting in ultra-low melting gallium-based liquid alloy.

Embodiment 3

[0021] It was accurately referred to using the analysis of the balance of 5.2780 g, indium 7.3210 g, tin 2.1610 g, zinc 0.1200 g and 0.1200 g of aluminum (about 0.2% aluminum content). Gallium, indium, tin and zinc first addition in graphite crucibles, and finally placed in aluminum. The graphite crucible is moved into the atmosphere, and the high purity argon protection is passed after vacuum. The temperature was warmed to 700 ° C and held for 1 h. The graphite crucible is taken out with the furnace. After standing for 2 hours, the surface oxide film was removed, and a low melting point gallium-based liquid alloy was obtained.

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Abstract

The invention discloses a method for preparing a low-melting point five-element gallium-based liquid alloy, which belongs to the field of material metallurgy. The present invention adopts the atmosphere smelting method or the gallium dissolving method, and prepares the alloy according to the mass percentage of 83.80%-83.99% of gallium, 12.20% of indium, 3.60% of tin, 0.20% of zinc, and 0.01%-0.20% of aluminum. The preparation method of a gallium-based liquid metal with an ultra-low melting point of the present invention can obtain the gallium-based liquid metal with a melting point of -32°C, the preparation method is simple, and it is easy to promote industrial production. The melting point of the gallium-based liquid alloy obtained in the present invention is similar to that of mercury, and the alloy is safe and non-toxic, can replace mercury products, solve potential environmental pollution threats, and have wide applications in new technology fields such as flexible electronics, wearable devices, and bionic robots. prospect.

Description

Technical field [0001] The present invention belongs to the field of material metallurgy, involves a melting point and mercury proximal gallium tin aluminum zinc liquid alloy, which has a safe, non-toxic, vapor low, and can be used to replace mercury. Background technique [0002] Metals exhibiting liquid states at room temperature include mercury, cesium, 钫 and gallium, and the melting point is -38.87 ° C, 28.65 ° C, 27 ° C and 29.8 ° C. Among them, mercury is volatile, toxic; it is very easy to be oxidized in the air, and it can respond with water; 钫钫 is an unstable radioactive element; only metal gallium is harmless, it is a safe Metal. my country has banned the new native mercury mine, and has been restricted by many Chinese-merciable industries and the mixed-based products until the final production schedule. To this end, some of the products based on mercury liquid metal properties, such as thermometer, sphygmomanometers, mercury tilt switches, etc. [0003] Although galliu...

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 罗鲲耿继业诸葛祥群
Owner CHANGZHOU UNIV
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