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High corrosion resistance magnesium alloy for mechanical shell and preparation method thereof

A technology with high corrosion resistance and mechanical casing, applied in the field of metal alloy materials, can solve the problems of expensive rare earth addition and unsatisfactory corrosion resistance, and achieve the effects of reducing corrosion current density, low alloy cost, and wide application prospects

Active Publication Date: 2017-08-18
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of unsatisfactory corrosion resistance and expensive rare earth addition in the prior art by providing a high-corrosion-resistant magnesium alloy for mechanical shells and its preparation method for the above-mentioned problems. Alloying elements aluminum, zinc, chromium and beryllium and impurity-removing element manganese are added to the magnesium matrix. Through the composite alloying of various metal elements, the corrosion resistance of magnesium alloys is significantly improved, and a highly practical mechanical shell is developed. Corrosion Resistant Magnesium Alloy

Method used

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  • High corrosion resistance magnesium alloy for mechanical shell and preparation method thereof

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Effect test

Embodiment 1

[0027] 1. A high-corrosion-resistant magnesium alloy for a mechanical shell, the weight percentage of the chemical composition of the magnesium alloy: Al is 10.0%, Zn is 0.1%, Cr is 0.1%, Be is 0.05%, Mn is 0.2%, The balance is Mg.

[0028] 2. The coolant is obtained by the following method: after selecting the red mud, add steel-making steel slag, water glass, and bentonite and mix it in the mixer for 30 minutes, then granulate and form particles with a particle size of 3mm, and then send them to Drying in a kiln at a drying temperature of 280°C and controlling the water content at 3% to obtain a coolant; the weight ratio of the red mud, steelmaking steel slag, water glass, and bentonite is 12:12:2:1.

[0029] 3. The raw materials in the above ratio and the prepared coolant are used in the preparation of a high corrosion-resistant magnesium alloy for mechanical casings. The specific steps are as follows:

[0030] (1) Take metal pure magnesium, pure aluminum, pure zinc, Mg-5C...

Embodiment 2

[0034] 1. A high-corrosion-resistant magnesium alloy for a mechanical shell, the weight percentage of the chemical composition of the magnesium alloy: Al is 15.0%, Zn is 0.9%, Cr is 0.6%, Be is 0.6%, Mn is 0.5%, The balance is Mg.

[0035] 2. The coolant is obtained by the following method: After selecting the red mud, add steel-making steel slag, water glass, and bentonite and mix it in the mixer for 40 minutes, then granulate and form particles with a particle size of 10mm, and then send them to Kiln drying, the drying temperature is 300°C, and the water content is controlled at 3%, to obtain the coolant; the weight ratio of the red mud, steelmaking steel slag, water glass, and bentonite is 12:12:2:1.

[0036] 3. The raw materials in the above ratio and the prepared coolant are used in the preparation of a high corrosion-resistant magnesium alloy for mechanical casings. The specific steps are as follows:

[0037] (1) Take metal pure magnesium, pure aluminum, pure zinc, Mg-5...

Embodiment 3

[0041] 1. A high-corrosion-resistant magnesium alloy for a mechanical shell, the weight percentage of the chemical composition of the magnesium alloy: Al is 11.0%, Zn is 0.3%, Cr is 0.2%, Be is 0.1%, Mn is 0.4%, The balance is Mg.

[0042] 2. The coolant is obtained by the following method: After selecting the red mud, add steel-making steel slag, water glass, and bentonite and mix it in the mixer for 35 minutes, then granulate and form particles with a particle size of 5 mm, and then send them to Drying in a kiln at a drying temperature of 285°C and controlling the water content at 3% to obtain a coolant; the weight ratio of the red mud, steelmaking steel slag, water glass, and bentonite is 12:12:2:1.

[0043] 3. The raw materials in the above ratio and the prepared coolant are used in the preparation of a high corrosion-resistant magnesium alloy for mechanical casings. The specific steps are as follows:

[0044] (1) Take metal pure magnesium, pure aluminum, pure zinc, Mg-5C...

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Abstract

The invention discloses a high corrosion resistance magnesium alloy for a mechanical shell and a preparation method thereof. The magnesium alloy comprises the chemical components of, by weight percentage, 10.0-15.0% of Al, 0.1-0.9% of Zn, 0.1-0.6% of Cr, 0.05-0.6% of Be, 0.2-0.5% of Mn, and the balance Mg. The preparation method comprises the steps of preheating of raw materials, fusing, casting moulding and the like. The high corrosion resistance magnesium alloy for the mechanical shell and the preparation method thereof have the advantages that the alloy elements of Al, Zn, Cr and Be are added into a magnesium matrix, the corrosion potential of the magnesium alloy is improved through the multi-component function, the corrosion current density of the magnesium alloy is reduced, the corrosion rate of the magnesium alloy is reduced, and the corrosion resistance of the magnesium alloy is remarkably improved; and the magnesium alloy provided by the invention does not contain expensive rare earth metal, the preparation process is simple, the alloy is low in cost, and the application prospects are wide.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of metal alloy materials, in particular to a high corrosion-resistant magnesium alloy for mechanical casings and a preparation method thereof. [0003] 【Background technique】 [0004] Magnesium alloy is an alloy composed of magnesium and other elements. Magnesium alloy has the characteristics of low density (about 1.74g / cm3), high specific strength, large specific elastic modulus, good heat dissipation, good shock absorption, and greater impact load capacity than aluminum alloy. With the intensification of the lightweight process in all walks of life, magnesium alloys have increasingly broad market prospects. Magnesium-aluminum alloys are currently the most widely used, followed by magnesium-manganese alloys and magnesium-zinc-zirconium alloys. However, the poor corrosion resistance of magnesium alloys has become an obstacle to the large-scale industrial application of magnesium alloys, hindering t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/02C22C1/03B22D27/04
CPCB22D27/04C22C1/03C22C23/02
Inventor 张炯陈韶飞郭红霞刘丽华范超莫玉珍
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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