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High-thermal-conductivity rare-earth magnesium alloy and preparation method thereof

A technology of rare earth magnesium and high thermal conductivity, which is applied in the field of metal materials, can solve the problems that magnesium alloys cannot take into account high strength and high thermal conductivity, etc., and achieve the goals of improving thermal conductivity and mechanical properties, good thermal conductivity, and improving thermal conductivity Effect

Inactive Publication Date: 2017-09-05
GANNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the technical problem that the existing magnesium alloys cannot take into account high strength and high thermal conductivity, the present invention provides a rare earth magnesium alloy with high thermal conductivity and a preparation method thereof

Method used

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  • High-thermal-conductivity rare-earth magnesium alloy and preparation method thereof
  • High-thermal-conductivity rare-earth magnesium alloy and preparation method thereof
  • High-thermal-conductivity rare-earth magnesium alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] A rare earth magnesium alloy with high thermal conductivity, the magnesium alloy contains 2.5wt.% of zinc; 0.15wt.% of zirconium; 0.05wt.% of samarium; the rest is magnesium and unavoidable impurities.

[0032] The magnesium alloy is prepared by the following method, and the preparation method includes the following steps:

[0033] 1) Weigh pure magnesium ingots, pure zinc particles, Mg-Zr master alloy, Mg-Sm master alloy according to the composition content containing zinc 2.5wt.%, zirconium 0.15wt.%; samarium 0.05wt.%.

[0034] 2) The raw materials weighed in step 1) were dried and preheated at 200°C for 2 hours respectively, and set aside;

[0035] 3) Put the preheated pure magnesium ingot in step 2) into a stainless steel crucible, heat up under the protection of a protective gas, and the protective gas is CO 2 and SF 6 Mixed gas, CO in protective gas 2 with SF 6 The volume of the gas is 99︰1. After the magnesium is completely melted, add step 2) preheated pure ...

Embodiment 2-7

[0040] Compared with Example 1, the only difference is that only the content of samarium in the magnesium alloy is different. The specific content is shown in the table below:

[0041] Zinc content (wt.%) Zirconium content (wt.%) Samarium content (wt.%) Example 2 2.5 0.15 0.1 Example 3 2.5 0.15 0.15 Example 4 2.5 0.15 0.25 Example 5 2.5 0.15 0.36 Example 6 2.5 0.15 1.44 Example 7 2.5 0.15 1.5

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Abstract

The invention belongs to the field of metal materials, aims at the technical problem that high strength and high thermal conductivity cannot be both considered in an existing magnesium alloy, and specifically discloses a high-thermal-conductivity rare-earth magnesium alloy. The magnesium alloy contains 2.5-3.5wt.% of zinc, 0.15-0.35wt.% of zirconium, 0-1.5wt.% of samarium and the balance magnesium and inevitable impurities. The invention further discloses a preparation method for a high-thermal-conductivity rare-earth magnesium alloy. The preparation method comprises the following steps: 1) weighing a pure magnesium ingot, pure zinc particles, an Mg-Zr intermediate alloy and an Mg-Sm intermediate alloy according to the required component contents for standby; 2) drying and preheating the raw materials weighed in the step 1) at 200 DEG C for 2h separately for standby; 3) placing the pure magnesium ingot preheated in the step 2) in a stainless steel crucible, and heating the pure magnesium ingot under the shield of a protective gas; and 4) carrying out hot extrusion deformation on the magnesium ingot in the step 3), thereby obtaining the deformed magnesium alloy.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a rare earth magnesium alloy with high thermal conductivity and a preparation method thereof. Background technique [0002] In some special fields, such as aerospace or high-precision electronic instrument manufacturing, some components must use materials with high thermal conductivity. Deformation under thermal load makes it work stably. In the civilian field, some products still urgently need to improve heat dissipation efficiency, such as LED, 3C products, core chips (CPU), etc. In these products, heat dissipation has become a bottleneck hindering their continuous development. [0003] Compared with traditional heat dissipation materials such as aluminum alloy, magnesium alloy has fast heat dissipation and good effect, and the weight of magnesium alloy is lighter, and the resource of magnesium metal is abundant and sustainable. Therefore, more and more scientific and technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/03
CPCC22C1/03C22C23/04
Inventor 杨初斌罗宁彭光怀张小联韩宝军方玲
Owner GANNAN NORMAL UNIV
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