Preparation method of rapidly dissolving magnesium alloy

A magnesium alloy, fast technology, applied in the field of corrosion of metal materials, can solve the problems of uncontrollable corrosion time and long corrosion time, and achieve the effect of increasing the corrosion rate and increasing the application range

Active Publication Date: 2020-06-02
厦门火炬特种金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fast dissolving magnesium alloys currently on the market gener

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A rapidly dissolving magnesium alloy, the chemical composition of which is (mass fraction): 0.5% Ni, 1% Cu, 0.5% Fe, 0.5% Si, 7.5% magnesium for primary smelting, and 90% magnesium for secondary smelting.

[0028] The addition of alloying element Ni greatly improves the corrosion rate of magnesium alloys and expands the application of rapidly dissolving magnesium alloys under the requirements of rapid corrosion; among them, Ni element has the greatest influence on the corrosion rate of alloy materials. With the increase of Ni element, the alloy The corrosion rate of the material increases; and the corrosion rate increases slowly when the Ni element accounts for 0.5%-2%wt, and the corrosion rate increases faster when the Ni element accounts for 2%-6%wt.

[0029] The addition of alloying element Cu can also help to increase the dissolution rate of magnesium alloys, and at the same time enhance the tensile strength and compressive strength of magnesium alloys, which can mee...

Embodiment 2

[0043] A rapidly dissolving magnesium alloy, the chemical composition of which is (mass fraction): 2% Ni, 1% Cu, 1% Fe, 1% Si, 15% of primary molten magnesium, and 80% of secondary molten magnesium;

[0044] The alloy preparation method is:

[0045] 1) Surface treatment of magnesium ingots, nickel ingots, copper ingots, iron ingots, and silicon ingots with a purity of 99.9% is selected to remove surface oxides and oil stains;

[0046] 2) Place the treated magnesium ingot which is 3 times the weight of other alloying elements in a melting furnace and heat it up to 740°C, keep it warm for 30 minutes, stir and remove slag during the heat preservation process, and obtain molten magnesium;

[0047] 3) Add the treated nickel ingots, copper ingots, iron ingots and silicon ingots into the magnesium liquid in step 2), conduct a smelting and keep warm at a temperature of 810°C, keep warm for 20 minutes to obtain a molten alloy, and stir during the keep warm and slag removal;

[0048] ...

Embodiment 3

[0054] A rapidly dissolving magnesium alloy, its chemical composition is (mass fraction): 4% Ni, 1.5% Cu, 1.5% Fe, 1.5% Si, 25.5% of primary molten magnesium, 66% of secondary molten magnesium;

[0055] The alloy preparation method is:

[0056] 1) Surface treatment of magnesium ingots, nickel ingots, copper ingots, iron ingots, and silicon ingots with a purity of 99.9% is selected to remove surface oxides and oil stains;

[0057] 2) Place the treated magnesium ingot that is 3 times the weight of other alloying elements in a melting furnace and heat it up to 760°C, keep it warm for 25 minutes, stir and remove slag during the heat preservation process, and obtain molten magnesium;

[0058] 3) Add the treated nickel ingots, copper ingots, iron ingots and silicon ingots into the magnesium liquid in step 2), conduct a smelting and keep warm at a temperature of 830°C and keep warm for 30 minutes to obtain a molten alloy, and stir during the keep warm and slag removal;

[0059] 4) Af...

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Abstract

The invention discloses a preparation method of a rapidly dissolving magnesium alloy, and belongs to the technical field of metal material corrosion. The method includes the following steps: preparinga magnesium ingot, a nickel ingot, a copper ingot, an iron ingot and a silicon ingot, and after melting part of the magnesium ingot, adding the rest of the alloy ingots for primary smelting and casting to obtain a magnesium alloy intermediate material; and then, after secondarily melting the remaining magnesium ingot, adding the magnesium alloy intermediate for secondary melting and casting to obtain the magnesium alloy material. The corrosion rate of the magnesium alloy is high, which meets the demand for the rapidly dissolving magnesium alloy for industrial production; and besides, the corrosion rate of the magnesium alloy can be adjusted. Under the condition of a 5% NaCl solution at 25 DEG C, the magnesium alloy has the corrosion rate reaching 702-2163 mm/a, the tensile strength reaching 231-283 MPa and the compressive strength reaching 386-456 MPa.

Description

technical field [0001] The invention belongs to the technical field of metal material corrosion, and in particular relates to a preparation method of a rapidly dissolving magnesium alloy. Background technique [0002] Magnesium has high chemical activity and is often made into a sacrificial anode, which is widely used in sacrificial anodes and corrosion battery anodes. The principle is to connect the magnesium anode to the protected cathode electrode. Since the magnesium anode is highly active and the potential is more negative than the cathode, the electrons on the anode will continuously transport electrons to the protected cathode through the electrolyte solution, so that the protected cathode is in The more negative potential is protected. During the corrosion process, the magnesium anode will gradually corrode until it disappears. In the application of corrosion batteries and short-term plugging, the corrosion rate of the magnesium anode needs to be large enough to en...

Claims

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Application Information

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IPC IPC(8): C22C23/00C22C1/02
CPCC22C1/02C22C23/00
Inventor 陈东旭温军国史学栋陈松邹宏辉马志新
Owner 厦门火炬特种金属材料有限公司
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