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Rare earth flame resistance magnesium alloy and preparation method thereof

A magnesium alloy and rare earth technology, applied in the field of rare earth flame-retardant magnesium alloy and its preparation, can solve the heat resistance of flame-retardant magnesium alloy, that is, the problem that the ignition point needs to be further improved, and impurities are involved, so as to reduce the greenhouse effect and flame-retardant performance The effect of improving and excellent performance

Inactive Publication Date: 2010-01-20
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the composition of the existing disclosed rare earth flame-retardant magnesium alloys is based on the commonly used magnesium alloys Mg-Al series and Mg-Zn series alloys, and then adding a variety of mixed rare earth element master alloys and other master alloys, which also leads to The existing disclosed rare earth flame-retardant magnesium alloy preparation method will inevitably involve some impurities during the smelting and preparation process, and the heat resistance of the flame-retardant magnesium alloy prepared by it, that is, the ignition point, needs to be further improved

Method used

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  • Rare earth flame resistance magnesium alloy and preparation method thereof
  • Rare earth flame resistance magnesium alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step One, Ingredients

[0031] Weigh pure magnesium, Mg-Y master alloy and Mg-Dy master alloy raw materials according to the mass percentage of constituent elements as Mg:Y:Dy=97.65:0.35:2.0, wherein, the mass percentage of Mg-Y master alloy containing Y is 29.05 The rest is Mg, the mass percentage of Dy contained in the Mg-Dy master alloy is 29.025%, and the rest is Mg. The pure magnesium used is a commercially available commodity. The Mg-Y master alloy and the Mg-Dy master alloy are purchased from Inner Mongolia Rare Earth Research Institute;

[0032] The second step, smelting of rare earth flame retardant magnesium alloy

[0033]Preheat the crucible in a crucible-type resistance furnace to 500°C and take it out, add all the raw materials of pure magnesium, Mg-Y master alloy and Mg-Dy master alloy weighed in the first step into the crucible at one time, and then the crucible Quickly put it into a crucible-type resistance furnace, and immediately pass a protective gas...

Embodiment 2

[0038] Step One, Ingredients

[0039] According to the mass percent of the constituent elements, Mg:Y:Dy=96.1:0.40:3.5 Weigh pure magnesium, Mg-Y master alloy and Mg-Dy master alloy raw materials, wherein, the mass percent of Mg-Y master alloy containing Y is 29.05 The rest is Mg, the mass percentage of Dy contained in the Mg-Dy master alloy is 29.025%, and the rest is Mg. The pure magnesium used is a commercially available commodity. The Mg-Y master alloy and the Mg-Dy master alloy are purchased from Inner Mongolia Rare Earth Research Institute;

[0040] The second step, smelting of rare earth flame retardant magnesium alloy

[0041] With embodiment 1;

[0042] The third step is casting into flame retardant magnesium alloy products

[0043] With embodiment 1, promptly make the atomic percent of constituent element be Mg 96.1 Y 0.40 Dy 3.5 flame retardant magnesium alloy products.

Embodiment 3

[0045] Step One, Ingredients

[0046] According to the mass percentage of the constituent elements, Mg:Y:Dy=97.05:0.45:2.5 Weigh pure magnesium, Mg-Y master alloy and Mg-Dy master alloy raw materials, wherein, the mass percentage of Mg-Y master alloy containing Y is 29.05 The rest is Mg, the mass percentage of Dy contained in the Mg-Dy master alloy is 29.025%, and the rest is Mg. The pure magnesium used is a commercially available commodity. The Mg-Y master alloy and the Mg-Dy master alloy are purchased from Inner Mongolia Rare Earth Research Institute;

[0047] The second step, smelting of rare earth flame retardant magnesium alloy

[0048] With embodiment 1;

[0049] The third step is casting into flame retardant magnesium alloy products

[0050] With embodiment 1, promptly make the atomic percent of constituent element be Mg 97.05 Y 0.45 Dy 2.5 flame retardant magnesium alloy products.

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Abstract

The invention provides a rare earth flame resistance magnesium alloy and a preparation method thereof and relates to a magnesium-based alloy adopting rare earth metal as main component; and the atom percentage of the elements of the alloy is Mg96.0-98.19Y0.31-0.5Dy1.5-3.5. The preparation method comprises the following steps: first weighting three raw materials, namely pure magnesium, Mg-Y preliminary alloy containing 29.05% of Y and Mg-Dy preliminary alloy containing 29.025% of Dy according to the weight percent of the elements of the alloy, heating and smelting at 600-720 DEG C, intermittently injecting mixed protective gases containing 99.5vol.% of CO2 and 0.5vol.% of SF6 at about 600 DEG C, 650 DEG C and 720 DEG C, and finally casting to obtain Mg96.0-98.19Y0.31-0.5Dy1.5-3.5 flame resistance magnesium alloy product. The product has very high purity and higher flame resistance property.

Description

technical field [0001] The technical solution of the invention relates to a magnesium-based alloy with rare earth metal as the secondary main component, specifically a rare earth flame-retardant magnesium alloy and a preparation method thereof. Background technique [0002] The position of Mg in the periodic table is in the range of alkaline metals, and its extranuclear electrons are less, which determines that Mg has strong chemical activity. Mg is easy to react with oxidizing media, so that the application of Mg-based products and components is greatly limited. However, Mg has some excellent characteristics that other metals do not have: light weight, high specific strength and high specific stiffness, excellent antimagnetic and shock absorption, good chip processing and easy recycling, so magnesium alloys are used in aviation , transportation and electronics have irreplaceable advantages. [0003] In view of the shortcomings of magnesium and magnesium alloys that are ea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/06C22C1/03
Inventor 赵维民廖波李永艳史中方丁俭李海鹏王志峰蔚成全黄春瑛
Owner HEBEI UNIV OF TECH
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