Magnesium-based powder metallurgy composite material and preparation method thereof

A composite material and magnesium-based powder technology, applied in the field of powder metallurgy composite materials and their preparation, can solve problems such as poor wear resistance, and achieve the effects of improving performance, low preparation cost and good wear resistance.

Active Publication Date: 2015-03-04
江阴金属材料创新研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, magnesium alloys have attracted extensive attention from researchers at home and abroad due to their advantages such as low density, high specific strength and specific stiffness, and good shock absorption performance, and have been widely used in the automotive industry, aerospace industry and other fields. The problem is that the wear resistance is not good, which limits its wide application to a certain extent.

Method used

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  • Magnesium-based powder metallurgy composite material and preparation method thereof

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Effect test

Embodiment 1

[0018] A magnesium-based powder metallurgy composite material is composed of the following substances in weight percentage: iron powder 2%, copper powder 1%, nickel powder 0.2%, chromium powder 2%, aluminum powder 10%, zinc powder 0.5%, SiC particles 16% , and the balance is magnesium powder, wherein the SiC particles have a particle size of 5-15 microns and a purity of ≥99.5%, and the magnesium powder has a particle size of 40-60 microns and a purity of ≥99.9%.

[0019] A preparation method of magnesium-based powder metallurgy composite material, comprising the following steps:

[0020] a: Mix the components evenly, then dry at 70°C for 5 hours;

[0021] b: Then sinter at 500°C for 1 hour, and after cooling, a magnesium-based powder metallurgy composite material can be obtained, wherein the heating rate is 150°C / min; the particle size of SiC particles is 5-15 microns, the purity is ≥99.5%, and magnesium powder The particle size is 40-60 microns, and the purity is ≥99.9%.

Embodiment 2

[0023] A magnesium-based powder metallurgy composite material is composed of the following substances in weight percentage: iron powder 5%, copper powder 3%, nickel powder 0.8%, chromium powder 3%, aluminum powder 15%, zinc powder 1%, SiC particles 20% , and the balance is magnesium powder, wherein the SiC particles have a particle size of 5-15 microns and a purity of ≥99.5%, and the magnesium powder has a particle size of 40-60 microns and a purity of ≥99.9%.

[0024] A preparation method of magnesium-based powder metallurgy composite material, comprising the following steps:

[0025] a: Mix the components evenly, and then dry at 75°C for 6 hours;

[0026] b: Then sinter at 550°C for 3 hours, and after cooling, a magnesium-based powder metallurgy composite material can be obtained, wherein the heating rate is 155°C / min; the particle size of SiC particles is 5-15 microns, the purity is ≥99.5%, and magnesium powder The particle size is 40-60 microns, and the purity is ≥99.9%. ...

Embodiment 3

[0028] A magnesium-based powder metallurgy composite material is composed of the following substances in weight percentage: iron powder 3%, copper powder 1.5%, nickel powder 0.4%, chromium powder 2.2%, aluminum powder 12%, zinc powder 0.6%, SiC particles 17% , and the balance is magnesium powder, wherein the SiC particles have a particle size of 5-15 microns and a purity of ≥99.5%, and the magnesium powder has a particle size of 40-60 microns and a purity of ≥99.9%.

[0029] A preparation method of magnesium-based powder metallurgy composite material, comprising the following steps:

[0030] a: Mix the components evenly, then dry at 80°C for 7 hours;

[0031] b: Then sinter at 600°C for 2 hours, and after cooling, a magnesium-based powder metallurgy composite material can be obtained, wherein the heating rate is 160°C / min; the particle size of SiC particles is 5-15 microns, the purity is ≥99.5%, and magnesium powder The particle size is 40-60 microns, and the purity is ≥99.9%...

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Abstract

The invention discloses a magnesium-based powder metallurgy composite material and a preparation method thereof. The composite material is composed of the following materials according to the percentage by weight: 2% to 5% of iron powder, 1% to 3% of copper powder, 0.2% to 0.8% of nickel powder, 2% to 3% of chromium powder, 10% to 15% of aluminum powder, 0.5% to 1% of zinc powder, 16% to 20% of SiC particle and the balance of magnesium powder, wherein the granularity of the SiC particles is 5 to 15 micrometers, the purity of the SiC particles is greater than or equal to 99.5%, the granularity of the magnesium powder is 40 to 60 micrometers, and the purity of the magnesium powder is greater than or equal to 99.9%. The preparation method comprises the steps: a. drying at 70 to 90 DEG C for 5 to 8 hours; b. sintering at 500 to 750 DEG C for 1 to 3 hours. The magnesium-based powder metallurgy composite material prepared by the preparation method has the advantage of good wear resistant performance and can meet the requirement on the wear resistant performance of the magnesium-based powder metallurgy composite material in a practical application.

Description

technical field [0001] The invention relates to a powder metallurgy composite material and a preparation method thereof, in particular to a magnesium-based powder metallurgy composite material and a preparation method thereof. Background technique [0002] Powder metallurgy technology has been widely used in transportation, machinery, nuclear industry and other fields, and has become one of the most dynamic branches in new material science. Powder metallurgy technology has a series of advantages such as significant energy saving, material saving, excellent performance, high product precision and good stability, and is very suitable for mass production. [0003] In addition, some materials and complex parts that cannot be prepared by traditional casting methods and machining methods can also be manufactured by powder metallurgy technology, so they have attracted the attention of the industry. [0004] At present, magnesium alloys have attracted extensive attention from resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C22C23/00C22C32/00C22C1/05
Inventor 刘莉王爽邱晶刘晓东黄明明
Owner 江阴金属材料创新研究院有限公司
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