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Magnesium alloy pumice ferric oxide cobalt composite material and preparation method thereof

A technology of composite material and iron oxide, which is applied in the field of magnesium alloy pumice iron oxide cobalt wave-absorbing and vibration-absorbing composite material and its preparation method and its preparation field, which can solve the problems of poor wave-absorbing performance and complicated process, and achieve the effect of enhanced effect

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 alloy pumice ferric oxide cobalt composite material and preparation method thereof
  • Magnesium alloy pumice ferric oxide cobalt composite material and preparation method thereof
  • Magnesium alloy pumice ferric oxide cobalt composite material and preparation method thereof

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Effect test

Embodiment 1

[0028] The preparation process of magnesium alloy base pumice iron oxide cobalt composite material of the present invention is as follows:

[0029] a. Preparation of pumice iron oxide cobalt compound: put ferric chloride, cobalt chloride and ferrous ammonium sulfate into a hydrothermal container with Teflon lining, add water to dissolve, and then load pumice, the size of pumice particles It is about 0.5mm. Stir the above three substances for 2-7min. The weight ratio of the four substances, ferric chloride, cobalt chloride, ferrous ammonium sulfate and pumice, is 1:1:1:1. After heat preservation in an oven at 220°C for 3 hours, cool naturally to obtain the pumice iron oxide cobalt compound;

[0030] Then dolomite and pumice iron oxide cobalt compound are mixed, the size of dolomite particle is about 0.01mm, the weight ratio of pumice iron oxide cobalt compound and dolomite is 1: 0.05, the mixture of dolomite and pumice iron oxide cobalt compound Put it into the cavity of a ste...

Embodiment 2

[0034] a. Preparation of the pumice iron oxide-cobalt complex: when forming the pumice iron oxide-cobalt complex, the weight ratio of ferric chloride, cobalt chloride, ferrous ammonium sulfate and pumice is 1:2:1:2. The pumice particle size is about 1mm.

[0035] Composite preform: in the mixture of dolomite and pumice iron oxide cobalt compound, the weight ratio of pumice iron oxide cobalt compound to dolomite is 1:0.09, and the size of dolomite particles is 0.06mm; control the pumice iron oxide cobalt compound The volume percentage of the composite material is 40%;

[0036] B, the preparation of magnesium alloy liquid: the weight percent of the chemical composition of this magnesium alloy substrate: Al is 8%, Th is 0.05%, Si is 1%, Bi is 0.005%;

[0037] Its preparation process is with embodiment one.

Embodiment 3

[0039] a. Preparation of the pumice iron oxide-cobalt complex: when forming the pumice iron oxide-cobalt complex, the weight ratio of ferric chloride, cobalt chloride, ferrous ammonium sulfate and pumice is 1:1.2:1:1.2. The pumice particle size is about 0.6mm.

[0040]Composite preform: in the mixture of dolomite and pumice iron oxide cobalt compound, the weight ratio of pumice iron oxide cobalt compound to dolomite is 1:0.07, and the size of dolomite particles is 0.05mm; control the pumice iron oxide cobalt compound The volume percentage of the composite material is 43%;

[0041] B, the preparation of magnesium alloy liquid: the weight percent of the chemical composition of this magnesium alloy substrate: Al is 6%, Th is 0.04%, Si is 0.7%, Bi is 0.003%;

[0042] Its preparation process is with embodiment one.

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Abstract

The invention provides a magnesium alloy pumice ferric oxide cobalt composite material and a preparation method thereof. The composite material has high absorbing properties and excellent damping performance. The method of the invention has simple process and low production cost, and is suitable for industrialized production. The composite material takes magnesium alloy as a matrix; pumice ferric oxide cobalt composite material and dolomite granule are distributed on the matrix; the volume percent of the pumice ferric oxide cobalt composite material and the dolomite granule accounts for 40-45% of the composite material; the size of the composite granule is 0.5-1mm; and the magnesium alloy base body comprises the following chemical composition by weight percent: 4-8% of Al, 0.01-0.05% of Th, 0.5-1% of Si, 0.001-0.005% of Bi 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 iron oxide cobalt wave-absorbing and vibration-damping composite material and a preparation method thereof. 2. Background technology [0002] At present, in the field of materials, the wave-absorbing and vibration-reducing effect of materials has been paid attention to. [0003] CN200410023374.1 relates to an aluminum-based wave-absorbing material and its preparation method, which is characterized in that: the surface layer of an aluminum or aluminum alloy plate is formed by a one-step or two-step anodic oxidation method of direct current or alternating current to form a porous aluminum oxide film to form an aluminum-based porous oxide film Aluminum template, that is, AAO template; use DC or pulse current electrochemical deposition to assemble magnetic nano-metal wire arrays in aluminum-based AAO porous membranes to make aluminum-based absorbing materials ...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/00
Inventor 赵浩峰王玲刘美玲
Owner NANJING UNIV OF INFORMATION SCI & TECH
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