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High-toughness anti-corrosion magnesium alloy anti-radiation nano whisker

A nanocrystalline and magnesium alloy technology, applied in the direction of single crystal growth, crystal growth, single crystal growth, etc., can solve the problems of not easy to form filaments, easy to oxidize, etc., to achieve not easy to corrode, good electromagnetic shielding, strong radiation protection Effect

Inactive Publication Date: 2014-05-14
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnesium alloy nanocrystalline wires are easily oxidized during the production process and are not easy to form into wires.

Method used

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  • High-toughness anti-corrosion magnesium alloy anti-radiation nano whisker
  • High-toughness anti-corrosion magnesium alloy anti-radiation nano whisker
  • High-toughness anti-corrosion magnesium alloy anti-radiation nano whisker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take 81kg of magnesium, 7kg of aluminum, 2.4kg of zinc, 2.4kg of copper, 2.4kg of manganese, 2.4kg of ytterbium, and 2.4kg of europium, which are sequentially added to the melting furnace for smelting. After refining, they are cast into alloy samples for spinning. Conventional wire-spinning equipment is used to spin the alloy sample. During the spinning process, the alloy sample is re-melted at high frequency. The temperature is 700°C, and the spinning process is carried out under the protection of argon. Finally, nanocrystalline filaments with a diameter of about 98 μm are obtained, such as figure 1 As shown, the length of crystal wire is about 20cm. Its electromagnetic shielding effectiveness is shown in Table 1, which is 70-62dB between 30MHz and 1500MHz.

Embodiment 2

[0017] Take 79kg of magnesium, 10kg of aluminum, 10kg of calcium, and 1kg of europium, which are sequentially added to the melting furnace for smelting. After refining, they are cast into alloy samples for spinning. During the process, high-frequency remelting is carried out on the alloy sample. During the spinning process, the linear speed of the melting and pumping wheel is 45m / s, the injection pressure of the melt is 0.2MPa, and the injection temperature is 750°C. The spinning process is carried out in argon protection. . Finally got as figure 2 The nanocrystalline filaments shown have a diameter of approximately 100 μm. Its electromagnetic shielding effectiveness is shown in Table 1, which is 71-61dB between 30MHz and 1500MHz.

Embodiment 3

[0019] Take 73kg of magnesium, 5kg of aluminum, 5kg of calcium, 5kg of silicon, 3kg of zinc, 3kg of copper, 3kg of manganese, and 3kg of europium, which are successively added to the melting furnace for smelting. After refining, they are cast into alloy samples for spinning. The wire spinning equipment spins the alloy samples, during which the alloy samples are subjected to high-frequency remelting. During the spinning process, the linear speed of the melting pulley is 40m / s, the injection pressure of the melt is 0.3MPa, and the injection temperature is At 700°C, the spinning process is carried out under argon protection. Finally got as image 3 The diameter of the nanocrystalline wire shown is about 120 μm, and its electromagnetic shielding effectiveness is shown in Table 1, which is 69-65 dB between 30 MHz and 1500 MHz.

[0020] Table 1 Electromagnetic shielding effectiveness of magnesium alloy nanocrystalline wire

[0021]

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Abstract

The invention discloses a high-toughness anti-corrosion magnesium alloy anti-radiation nano whisker. The chemical composition expression of the nano whisker is Mg-aX-bZ, wherein the neutron number and the proton number of the element represented by X are equal, and the atomic number of X is not more than 20; the element represented by Z is transition metal and rare earth element with an all-full or half-full outermost electron track; and a and b are weight fractions (wt.%), 7<=a<=20, and 1<=b<=12. According to the high-toughness anti-corrosion magnesium alloy anti-radiation nano whisker disclosed by the invention, the oxidation phenomenon is avoided in the production process, and the whisker is easily formed and has relatively strong anti-radiation function; the electromagnetic shielding effectiveness of the magnesium alloy nano whisker is 61-71dB at 30-1,500MHz, and the appearance and touch texture are excellent so that the product looks more luxurious; and the magnesium alloy nano whisker is hardly corroded in air.

Description

technical field [0001] The invention belongs to the field of metal material preparation, in particular to a magnesium alloy nanocrystalline wire. Background technique [0002] In recent years, with the rapid development of electronic information technology, the electromagnetic radiation produced by electronic products is invisibly threatening people's health. The human body is always in a certain energy electromagnetic radiation environment. When the frequency exceeds 105Hz, it will be harmful Harmful to the human body. The greater the output power of the electromagnetic radiation source, the greater the radiation intensity, the shorter the wavelength, the higher the frequency, the closer the distance, the longer the contact time, the higher the ambient temperature, the greater the humidity, and the less air circulation, the degree of environmental pollution The larger the size, the more severely affected women and children. Electromagnetic waves can disturb the natural ph...

Claims

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Application Information

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IPC IPC(8): C30B29/62C30B29/52
Inventor 彭秋明付辉李慧
Owner YANSHAN UNIV