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
CN107058836AActive Publication Date: 2017-08-18GUANGXI UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGXI UNIVERSITY OF TECHNOLOGY
Publication Date
2017-08-18

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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.
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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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