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Magnesium-base copper-fiber pumice iron-barium oxide composite and preparation method thereof

A technology of barium iron oxide and composite materials, applied in the field of metal materials, can solve problems such as poor microwave absorption performance and complicated process

Inactive Publication Date: 2011-01-12
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, 3-20% by volume of electroless nickel-plated short carbon fibers are added to the magnesium matrix. Although the matrix is ​​strengthened and the damping performance is endowed with better performance, its damping performance is better than that of pure magnesium, which can reach High damping range of 0.015, but the process is more complicated
The disadvantage of this material is poor absorbing performance

Method used

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  • Magnesium-base copper-fiber pumice iron-barium oxide composite and preparation method thereof
  • Magnesium-base copper-fiber pumice iron-barium oxide composite and preparation method thereof
  • Magnesium-base copper-fiber pumice iron-barium oxide composite and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] The preparation process of the magnesium-based copper fiber pumice barium iron oxide composite material of the present invention is as follows:

[0035] a. Preparation of pumice iron oxide barium complex:

[0036] 1. Add a small amount of water to dissolve ferric chloride, barium nitrate and citric acid in a ratio of 1:5:5 to form a mixed solution of the three, then put in pumice stone, stir in a water bath of 80 for 10-20min, the size of the pumice stone particles It is about 0.5mm, and the weight ratio of the mixed solution of the three and the pumice is 5:1. After stirring, the agitated material is placed in an oven at 120 ° C for 30 minutes, and then cooled naturally, and then placed in an oven at 550-590 ° C. Natural cooling after 30min of insulation to obtain pumice iron barium oxide complex;

[0037] 2. Then put the ferric chloride and ferrous ammonium sulfate into the hydrothermal container with teflon lining, add water to dissolve (add a small amount of water ...

Embodiment 2

[0043] a. Preparation of pumice iron oxide barium complex:

[0044] The weight ratio of ferric chloride, barium nitrate and citric acid solution is 1:10:20, the weight ratio of this solution and pumice stone is 10:1, and the size of the pumice stone is 1 mm. In the preparation of the pumice iron barium oxide composite, the weight ratio of ferric chloride, ferrous ammonium sulfate and the pumice barium oxide composite is 1:1:2.

[0045] b. Preparation of copper alloy fiber: Mn is 8% by weight, Al is 0.009%, and the rest is made of Cu.

[0046] c. Control the composite preform to account for 45% of the cavity volume of the metal mold;

[0047] d. Preparation of magnesium alloy liquid: the weight percentage of magnesium alloy components is 6% Al, 0.01% Pb, 0.005% Ta, 1% Si, 0.01% Te, and the rest is Mg.

Embodiment 3

[0049] a. Preparation of pumice iron oxide barium complex:

[0050] The weight ratio of ferric chloride, barium nitrate and citric acid solution is 1:8:10, the weight ratio of this solution and pumice stone is 8:1, and the size of the pumice stone is 0.7 mm. In the preparation of the pumice iron barium oxide composite, the weight ratio of ferric chloride, ferrous ammonium sulfate and the pumice barium oxide composite is 1:1:1.5.

[0051] b. Preparation of copper alloy fiber: Mn is 10% by weight, Al is 0.006%, and the rest is made of Cu.

[0052] c. Control the composite preform to account for 50% of the cavity volume of the metal mold;

[0053] d. Preparation of magnesium alloy liquid: the weight percentage of magnesium alloy components is 4% Al, 0.007% Pb, 0.003% Ta, 0.8% Si, 0.007% Te, and the rest is Mg.

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Abstract

The invention discloses a magnesium-base copper-fiber pumice iron-barium oxide composite and a preparation method thereof. The composite has a high wave-absorbing property and a high damping property. The preparation method is simple in process, in low production cost and suitable for industrial production. In the composite, magnesium alloy is used as a matrix, and pumice iron-barium oxide complex and copper alloy fibers are distributed on the matrix and account for 45 to 55 percent of the volume of the composite; the grain size of the pumice iron-barium oxide complex ranges from 0.5 to 1mm; and the magnesium alloy matrix comprises the following chemical components in percentage by weight: 3 to 6 percent of Al, 0.005 to 0.01 percent of Pb, 0.001 to 0.005 percent of Ta, 0.5 to 1 percent of Si, 0.005 to 0.01 percent of Te and the balance of Mg.

Description

1. Technical field [0001] The invention belongs to the field of metal materials and relates to a magnesium alloy pumice barium iron oxide wave-absorbing and vibration-absorbing composite material and a preparation method and preparation method thereof. 2. Background technology [0002] At present, in the field of materials, attention has been paid to the absorbing and damping effect of materials. [0003] CN200410023374.1 relates to an aluminum-based wave absorbing material and its preparation method, which is characterized in that: the surface layer of aluminum or aluminum alloy plate is formed by one-step or two-step anodic oxidation method of direct current or alternating current to form a porous aluminum oxide film, and the aluminum-based porous oxide film is made. Aluminum template, namely AAO template; using direct current or pulsed current electrochemical deposition to assemble magnetic nano-metal wire array in aluminum-based AAO porous film to make aluminum-based wav...

Claims

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Application Information

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IPC IPC(8): C22C32/00C22C49/06C22C49/14C22C47/08B22D11/06C22C1/10C22C111/00
Inventor 王玲赵浩峰邱奕婷
Owner NANJING UNIV OF INFORMATION SCI & TECH
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