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High thermal conductivity magnesium alloy and preparation method thereof

A magnesium alloy, high thermal conductivity technology, applied in the field of magnesium alloys, can solve problems such as high cost and affect production efficiency, and achieve the effects of low cost, no pollutant discharge, and good corrosion resistance.

Inactive Publication Date: 2020-07-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the alloy disclosed in this invention contains a large amount of rare earth elements, which is expensive, and due to the addition of Zr, it needs to be stirred for a long time (up to 1.0-1.5 hours) to ensure that Zr is evenly dispersed, which affects production efficiency

Method used

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  • High thermal conductivity magnesium alloy and preparation method thereof
  • High thermal conductivity magnesium alloy and preparation method thereof
  • High thermal conductivity magnesium alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Example 1: Mg-4Zn-0.8Sb-0.1Al-0.1Mn-0.2Ce alloy

[0054] The alloy composition prepared in this example is Mg-4Zn-0.8Sb-0.1Al-0.1Mn-0.2Ce alloy, using industrially pure Mg, high-purity Zn, high-purity Sb, high-purity Al, Mg-10Mn and Mg-20Ce The master alloy is prepared, and its composition by weight percentage is: Zn: 4%, Sb: 0.8%, Al: 0.1%, Mn: 0.1%, Ce: 0.2%, and the balance is Mg.

[0055] Alloy smelting, melt treatment process and its process parameters are as follows:

[0056] (1) Molten magnesium alloy

[0057] According to the composition ratio requirements, weigh the raw materials, in SF 6 +N 2 Under the protection of Mg, industrial pure magnesium is first melted, and the melting temperature is 720°C; high-purity Zn and high-purity Sb are added to the Mg melt, stirred for 5 minutes after melting, and kept for 10 minutes to obtain Mg-Zn-Sb alloy melt body.

[0058] (2) microalloying treatment

[0059] The prepared Mg-Zn-Sb alloy melt of step (1) is scraped ...

Embodiment 2

[0069] Example 2: Mg-4Zn-0.5Sb-0.3Al-0.1Mn-0.5Ce alloy

[0070] The types of alloying elements in this embodiment are the same as those in Embodiment 1, except that the addition amount of alloying elements is different. The alloy composition prepared in this example is Mg-4Zn-0.5Sb-0.3Al-0.1Mn-0.5Ce, using industrial pure Mg, high-purity Zn, high-purity Sb, high-purity Al, Mg-10Mn and Mg-20Ce The alloy is prepared, and the composition is by weight percentage: Zn: 4%, Sb: 0.5%, Al: 0.3%, Mn: 0.1%, Ce: 0.5%, and the balance is Mg.

[0071] The smelting and melt treatment process of the alloy in this example is the same as that in Example 1, except that the process parameters are different. The specific process and its process parameters are as follows:

[0072] (1) Molten magnesium alloy

[0073] According to the composition ratio requirements, weigh the raw materials, in SF 6 +N 2Under the protection of the protection, industrial pure magnesium is first melted, and the mel...

Embodiment 3

[0082] Example 3: Mg-5Zn-1.2Sb-0.2Al-0.3Mn-0.3Ce alloy

[0083] The types of alloying elements in this embodiment are the same as those in Embodiment 1, except that the addition amount of alloying elements is different. The alloy composition prepared in this example is Mg-5Zn-1.2Sb-0.2Al-0.3Mn-0.3Ce, using industrial pure Mg, high-purity Zn, high-purity Sb, high-purity Al, Mg-10Mn and Mg-20Ce The alloy is prepared, and the composition is by weight percentage: Zn: 5%, Sb: 1.2%, Al: 0.2%, Mn: 0.3%, Ce: 0.3%, and the balance is Mg.

[0084] The smelting and melt treatment process of the alloy in this example is the same as that in Example 1, except that the process parameters are different. The specific process and its process parameters are as follows:

[0085] (1) Molten magnesium alloy

[0086] According to the composition ratio requirements, weigh the raw materials, in SF 6 +N 2 Under the protection of the protection, industrial pure magnesium is first melted, and the me...

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Abstract

The invention belongs to the technical field of magnesium alloys, and discloses a high thermal conductivity magnesium alloy and a preparation method thereof. The high thermal conductivity magnesium alloy contains the following components by weight percentages of Zn 4% to 6%, Sb 0.5% to 1.2%, Al 0.1% to 0.3%, Mn 0.1% to 0.3%, Ce 0.2% to 0.5%, and the balance is Mg. The invention also discloses a preparation method of the high thermal conductivity magnesium alloy. The invention gives full play to the synergistic effect of Sb element alloying and Al / Mn / Ce element microalloying, so that the magnesium alloy has very excellent thermal conductivity, high mechanical properties and good corrosion resistance, and shows an excellent comprehensive performance. The preparation process of the high thermal conductivity magnesium alloy disclosed by the invention has simple and convenient technology, low raw material cost, easy control of the added amount, remarkable effect and low industrial production cost, and has wide applicability.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloys, and in particular relates to a high thermal conductivity magnesium alloy and a preparation method thereof. Background technique [0002] With the rapid development of 3C products, information communication and new energy vehicles and other industries, the integration and power of components are getting higher and higher, and the heat emitted by operation per unit time is getting bigger and bigger. The generated heat needs to be discharged to the outside of the device through the radiator in time, otherwise the accumulated heat will increase the temperature of the device, interfere with the normal operation of the device, and reduce the service life of the device. Therefore, engineering applications in the new era have higher requirements on the thermal conductivity of materials. Magnesium has good thermal conductivity, second only to copper and aluminum among commonly used heat dissipat...

Claims

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Application Information

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IPC IPC(8): C22C23/04C22F1/06F28F21/08C22C1/03
CPCC22C1/03C22C23/04C22F1/06F28F21/081
Inventor 杜军黄玉剑周雄廖恒斌
Owner SOUTH CHINA UNIV OF TECH
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