CN108441729A - A kind of magnesium-alloy anode material and preparation method thereof - Google Patents
A kind of magnesium-alloy anode material and preparation method thereof Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
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- H01M4/466—Magnesium based
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- H—ELECTRICITY
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- H01M6/30—Deferred-action cells
- H01M6/32—Deferred-action cells activated through external addition of electrolyte or of electrolyte components
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Abstract
The invention discloses a kind of magnesium-alloy anode material and preparation method thereof, for magnesium-alloy anode material using Mg as matrix element, assistant metal element includes Pb, Sn, Ga, and gross mass percentage in the alloy is not less than 7%.The magnesium-alloy anode material of the present invention obtains the magnesium-alloy anode material of excellent combination property by the synergistic effect of Pb, Sn, Ga.This magnesium-alloy anode material is in 20mA/cm‑2The average potential of current density constant current discharge is 1.725V, and stable discharge polarizes smaller；In 100mA/cm2The average potential of current density constant current discharge is 1.65V, and in 100mA/cm2Anode efficiency reaches 85% under current density.It is found by comparing, this magnesium-alloy anode material is under same uniform current density size, and compared with general commercial AZ series magnesium alloys, current potential is more negative and stable, polarization is smaller.
Description
Technical field
The present invention relates to a kind of anode material, more particularly to a kind of sea-water activated battery magnesium-alloy anode material.
Background technology
China's magnesium resource is abundant, cheap, safety and environmental protection, has very important significance using magnesium resource.Magnesium alloy has
It is light, it is widely used in auto industry, electronics aspect and aerospace.Magnesium alloy electrochemical performance, energy specific capacity
Greatly, it is a kind of ideal sacrifice sun the advantages that standard electrode potential relatively negative (- 2.375V), electrochemical equivalent high (2200Ah/Kg)
Pole material, cell negative electrode material.Magnesium anode is usually and MnO at present2And the metal halides such as AgCl, CuCl restore cathode and sea
Water-Electrolyte is assembled into battery system, therefore magnesium cell is extensive in Military Application, is such as applied to torpedo, the ship of war, deep-sea inspection
Make sea-water activated battery in the equipment such as survey.
For ordinary magnesium alloy since self-corrosion rate is big, the reasons such as corrosion product is difficult to fall off cause anode utilization rate low, pole
Change seriously, actual operation requirements are not achieved in discharge instability.Currently used anode material used for magnesium alloy has AZ series, AM systems
Magnesium-mercury anode material etc. of row, the AP65 of magnesium electronics corporation of Britain research and development, and Russia's research and development.In commercial use, AZ systems
Common magnesium-alloy anode material mainly has AZ31, AZ61 and AZ91 in row, these anode materials have the advantage that electric discharge is flat altogether
Surely, hydrogen evolution rate is low, service efficiency is high etc., therefore receives extensive use.But the electric discharge activity of AZ series magnesium alloys is very low, electric discharge
Current potential is than calibration, in 10mA/cm-2Low current density under discharge potential still only there was only -1.0~-1.3V, in 100mA/cm-2With
On current density under discharge potential then correct, using AZ series as the battery system of anode material be difficult meet equipment operation needed for
Power, therefore design that a kind of discharge potential is more negative, and more powerful seawater battery magnesium-alloy anode material seems particularly heavy
It wants.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of corrosion product is easy to fall off, polarization is small, electric discharge
The high magnesium-alloy anode material and preparation method thereof of activity.
The technical solution used in the present invention is：
A kind of magnesium-alloy anode material, using Mg as matrix element, it is characterised in that：Assistant metal element include Pb, Sn,
The gross mass percentage of Ga, Pb, Sn, Ga in the alloy is not less than 7%.
As being further improved for above-mentioned magnesium-alloy anode material, assistant metal element also has Al and Zn, totally 5 kinds of auxiliary gold
Belong to element, the gross mass percentage of Al and Zn in the alloy is not less than 5%.
As being further improved for above-mentioned magnesium-alloy anode material, the weight percent of Al, Zn in the alloy is respectively：
Al：5.5~5.9%, Zn：0.5~0.8%.
As being further improved for above-mentioned magnesium-alloy anode material, the weight percent of tri- kinds of elements of Pb, Sn, Ga in the alloy
Than being respectively：Pb：4.6~4.9%, Sn：0.8~1.1%, Ga：2.5~2.8%.
As being further improved for above-mentioned magnesium-alloy anode material, the mass content ratio of tri- kinds of elements of Pb, Sn, Ga is：M
(Pb)：M(Sn)：M (Ga)=5：1：3.
A kind of preparation method of magnesium-alloy anode material, includes the following steps：
1) matching by the element of magnesium-alloy anode material composition takes raw material, melting and casting to obtain as-cast magnesium alloy anode material；
2) as-cast magnesium alloy anode material is subjected to homogenization heat treatment, obtains the magnesium-alloy anode material of homogenization state；
3) the magnesium-alloy anode material hot rolling that will homogenize state, obtains finished product magnesium-alloy anode material；
Wherein, the element composition of magnesium-alloy anode material is as described above.
As being further improved for above-mentioned preparation method, smelting temperature is 720~750 DEG C.
As being further improved for above-mentioned preparation method, the operation for homogenizing heat treatment includes：
1) as-cast magnesium alloy anode material is placed in 360~400 DEG C and keeps the temperature at least 8 hours, quenching；
2) at least 4 hours are kept the temperature in 400~450 DEG C, quenching postcooling to room temperature obtains the magnesium alloy anode of homogenization state
Material；
Aforesaid operations carry out under reductive condition protection.
As being further improved for above-mentioned preparation method, the magnesium-alloy anode material for homogenizing state is kept the temperature at 350~450 DEG C
Hot rolling is carried out after at least 2 hours.
As being further improved for above-mentioned preparation method, the purity not low 99.5% of raw material.
The beneficial effects of the invention are as follows：
The magnesium-alloy anode material of the present invention obtains the magnesium alloy of excellent combination property by the synergistic effect of Pb, Sn, Ga
Anode material.This magnesium-alloy anode material is in 20mA/cm-2The average potential of current density constant current discharge is -1.725V, electric discharge
Stablize, polarization is smaller；In 100mA/cm2The average potential of current density constant current discharge is -1.65V, and in 100mA/cm2
Anode efficiency reaches 85% under current density.By compare find, this magnesium-alloy anode material under same uniform current density size,
Compared with general commercial AZ series magnesium alloys, current potential is more negative and stable, polarization is smaller.
Description of the drawings
Fig. 1 is the 20mA/cm of the magnesium-alloy anode material obtained by embodiment 22And 100mA/cm2Constant current discharge curve
Figure；
Fig. 2 is the dynamic potential polarization curve figure of the magnesium-alloy anode material obtained by embodiment 2；
Fig. 3 is the micro-organization chart of the magnesium-alloy anode material obtained by embodiment 2；
Fig. 4 is the open circuit potential figure of magnesium-alloy anode material obtained in comparative example 1.
Specific implementation mode
A kind of magnesium-alloy anode material, using Mg as matrix element, it is characterised in that：Assistant metal element include Pb, Sn,
The gross mass percentage of Ga, Pb, Sn, Ga in the alloy is not less than 7%.
As being further improved for above-mentioned magnesium-alloy anode material, assistant metal element also has Al and Zn, totally 5 kinds of auxiliary gold
Belong to element, the gross mass percentage of Al and Zn in the alloy is not less than 5%.
As being further improved for above-mentioned magnesium-alloy anode material, the weight percent of Al, Zn in the alloy is respectively：
Al：5.5~5.9%, Zn：0.5~0.8%.
As being further improved for above-mentioned magnesium-alloy anode material, the weight percent of tri- kinds of elements of Pb, Sn, Ga in the alloy
Than being respectively：Pb：4.6~4.9%, Sn：0.8~1.1%, Ga：2.5~2.8%.
As being further improved for above-mentioned magnesium-alloy anode material, the mass content ratio of tri- kinds of elements of Pb, Sn, Ga is：M
(Pb)：M(Sn)：M (Ga)=5：1：3.
A kind of preparation method of magnesium-alloy anode material, includes the following steps：
1) matching by the element of magnesium-alloy anode material composition takes raw material, melting and casting to obtain as-cast magnesium alloy anode material；
2) as-cast magnesium alloy anode material is subjected to homogenization heat treatment, obtains the magnesium-alloy anode material of homogenization state；
3) the magnesium-alloy anode material hot rolling that will homogenize state, obtains finished product magnesium-alloy anode material；
Wherein, the element composition of magnesium-alloy anode material is as described above.
As being further improved for above-mentioned preparation method, smelting temperature is 720~750 DEG C.
As being further improved for above-mentioned preparation method, the operation for homogenizing heat treatment includes：
1) as-cast magnesium alloy anode material is placed in 360~400 DEG C and keeps the temperature at least 8 hours, quenching；
2) at least 4 hours are kept the temperature in 400~450 DEG C, quenching postcooling to room temperature obtains the magnesium alloy anode of homogenization state
Material；
Aforesaid operations carry out under reductive condition protection.
As being further improved for above-mentioned preparation method, the magnesium-alloy anode material for homogenizing state is kept the temperature at 350~450 DEG C
Hot rolling is carried out after at least 2 hours.
As being further improved for above-mentioned preparation method, the purity not low 99.5% of raw material.
Pb, Sn of addition can there are dissolution-deposition effects between Ga elements, and can react and generate eutectic mixing
Object destroys the passivating film of anode surface, improves electric discharge activity.Pb can make the reduction of magnesium gas-evolving electrodes current potential, inhibit gas-evolving electrodes,
Anode efficiency is improved, magnesium anode performance can be improved by being added together with Al, improve current efficiency；Sn has high hydrogen-evolution overpotential, energy
Inhibit gas-evolving electrodes, while the liberation of hydrogen and β-Mg of magnesium alloy can be effectively inhibited17Al21Mutually in the precipitation of crystal boundary；Ga can make
Magnesium anode current potential becomes negative, but too high levels can generate a large amount of second phases reduction current efficiency.Therefore three kinds of elements to be rationally designed
Content ratio controls Ga contents herein based on Pb, and appropriate Sn is added, and designs the mass content ratio of tri- kinds of elements of Pb, Sn, Ga
Example be：Pb：4.6~4.9%, Sn：0.8~1.1%, Ga：2.5~2.8%；Particularly, the quality of tri- kinds of elements of Pb, Sn, Ga
Ratio is：M(Pb)：M(Sn)：M (Ga)=5：1：3.
Most of Pb, Sn and Ga element of addition forms the second single phase, respectively Mg with Mg2Pb、Mg2Sn and
Ga2Mg5Etc. diffluent second phase.These second are met and cause the discontinuity of anode surface corrosion product, efficiently solve
The problem of magnesium anode material corrosion product difficulty falls off so that exoelectrical reaction continues, and is conducive to electrolyte solution infiltration and magnesium
Alloy contact；The standard electrode potential of these the second phases can be used as cathode phase, play than the electrode potential higher of magnesium matrix simultaneously
Micro- couple action increases reactivity point, accelerates the dissolving of magnesium anode matrix to reduce polarization and improves electric discharge activity.Especially
, when the mass ratio of tri- kinds of elements of Pb, Sn, Ga is：M(Pb)：M(Sn)：M (Ga)=5：1：3, Mg2Pb、Mg2Sn and Ga2Mg5
When the content of three kinds of precipitated phases is respectively 8.75%, 2.5% and 7.8%, obtained magnesium-alloy anode material shows better
Performance.
Addition element Al and Zn can effectively improve anode efficiency.The addition of alloy element Al can be acted on Pb, make magnesium
Anode potential is negative to move, and improves corrosion resistance, improves operating potential and efficiency, but excess of aluminum can generate cathode in grain boundaries and mutually lead
Intercrystalline corrosion is caused, therefore it is Al to design Al mass contents：5.5~5.9%.Alloy element Zn, which can be solid-solubilized in magnesium alloy substrate, to drop
Low magnesium surface aoxidizes membrane stability, improves anode activity, but too high levels, the second phase can be generated at 300 DEG C or more of temperature,
Follow-up Homogenization Process is influenced, therefore it is Zn to design Zn mass contents：0.5~0.8%.
By under protective condition, as-cast magnesium alloy anode material being carried out heat preservation and quenching treatment, effectively prevents magnesium
Alloy easy tos produce the phenomenon that burning in Homogenization Process, while the homogenization process of temperature from low to high makes the β phases of as cast condition
With a large amount of Mg2Pb、Mg2Sn and Ga2Mg5Steadily back dissolving is into inside matrix for second phase, while dendritic structures disappear, and crystal grain is more
Refinement is small, and the second phase is reduced.Particularly, protective condition is that as cast condition is placed in sulphur powder.Quenching makes the fast quickly cooling of homogenization state alloy
But, the alloy structure after homogenization is effectively remained, keeps ingredient and tissue more uniform, is conducive to subsequent hot rolled technique.And
Plastic deformation can then be crushed remaining coarse second phase after homogenization, therefore pass through heat treatment process and plastic deformation (heat
Roll) synergistic effect more uniform, the higher magnesium alloy anode of electric discharge activity, so that the magnesium alloy anode material that obtains tissue
Expect that discharge potential is more negative.Optimization is eventually passed through, the excellent magnesium-alloy anode material of comprehensive performance is obtained.
With reference to embodiment, the technical solution that further illustrates the present invention.
Unless otherwise instructed, the metallic element raw material used in following embodiment, purity are as follows：
Mg >=99.95%, Al >=99.99%, Pb >=99.99%, Sn >=99.99%, Ga >=99.99%, Zn >=
99.99%.
Embodiment 1
1) by Mg, Al, Pb, Sn, Ga, Zn according to composition proportion：Al:5.5%, Zn:0.5%, Pb：4.6%, Sn：
0.8%, Ga：2.5%, surplus is magnesium, weighs raw material；
2) it protects under gas shielded, Mg is completely melt by 720~750 DEG C of smelting temperature, and Al, Pb, Sn, Ga, Zn is added and stirs
It mixes, assistant metal element is made to be completely melt and be mixed evenly with Mg, standing, which is poured into after ten minutes in steel die, obtains bulk
Magnesium-alloy anode material ingot casting；
3) magnesium-alloy anode material ingot casting is subjected to homogenization heat treatment, heat treatment process is：Under sulphur powder protection, by magnesium
Alloy anode material ingot casting keeps the temperature 15h, subsequent ice water quenching at 400 DEG C, then 7h is kept the temperature at 430 DEG C, subsequent ice water quenching,
It is finally cooled to room temperature, obtains homogenization state alloy；
4) removal homogenization state alloy epidermis, 1 hour is kept the temperature at 350 DEG C, then keeps the temperature 3 hours at 400 DEG C, is carried out
Hot rolling, control pass deformation are 10%, and intermediate annealing process is carried out between each two passage, and temperature is 400 DEG C, soaking time
For 0.5h, finished product magnesium-alloy anode material is obtained.
Chemical property detection is carried out to the magnesium-alloy anode material, at room temperature (25 DEG C), in 3.5% NaCl solution
It tests to obtain corrosion potential to be -1.544V with potentiodynamic polarization, in 20mA/cm-2Under constant current density averaged discharge current potential be-
1.683V.In 100mA/cm-2Averaged discharge current potential is -1.654V under constant current density.
Embodiment 2
1) by Mg, Al, Pb, Sn, Ga, Zn according to composition proportion：Al:5.7%, Zn:0.6%, Pb：4.7%, Sn：
0.9%, Ga：2.6%, surplus is magnesium, weighs raw material；
2) it protects under gas shielded, Mg is completely melt by 720~750 DEG C of smelting temperature, and Al, Pb, Sn, Ga, Zn is added and stirs
It mixes, assistant metal element is made to be completely melt and be mixed evenly with Mg, standing, which is poured into after ten minutes in steel die, obtains bulk
Magnesium-alloy anode material ingot casting；
3) magnesium-alloy anode material ingot casting is subjected to homogenization heat treatment, heat treatment process is：Under sulphur powder protection, by magnesium
Alloy anode material ingot casting keeps the temperature 16h, subsequent ice water quenching at 380 DEG C, then 8h is kept the temperature at 420 DEG C, subsequent ice water quenching,
It is finally cooled to room temperature, obtains homogenization state alloy；
4) removal homogenization state alloy epidermis, 1 hour is kept the temperature at 350 DEG C, then keeps the temperature 1 hour at 400 DEG C, is carried out
Hot rolling, control pass deformation are 30%, and intermediate annealing process is carried out between each two passage, and temperature is 380 DEG C, soaking time
For 1.0h, finished product magnesium-alloy anode material is obtained.
Chemical property detection, at room temperature (25 DEG C), 3.5% NaCl solution are carried out to the magnesium-alloy anode material
In, in 20mA/cm2Averaged discharge current potential is -1.710V (Fig. 1) under constant current density；In 100mA/cm2It is put down under constant current density
Equal discharge potential is -1.645V (Fig. 1).It tests to obtain corrosion potential to be -1.547V (Fig. 2) with potentiodynamic polarization.
Fig. 3 is the micro-organization chart of magnesium-alloy anode material obtained in embodiment 2.It can be seen from the figure that the work
There is a small number of second phases of bulk without coarse second phase in the alloy substrate even tissue under skill, these second phases do anode phase and
Matrix forms micro cell, improves alloy reactivity.
Embodiment 3
1) by Mg, Al, Pb, Sn, Ga, Zn according to composition proportion：Al:5.8%, Zn:0.7%, Pb：4.8%, Sn：
1.0%, Ga：2.7%, surplus is magnesium, weighs raw material；
2) it protects under gas shielded, Mg is completely melt by 720~750 DEG C of smelting temperature, and Al, Pb, Sn, Ga, Zn is added and stirs
It mixes, assistant metal element is made to be completely melt and be mixed evenly with Mg, standing, which is poured into after ten minutes in steel die, obtains bulk
Magnesium-alloy anode material ingot casting；
3) magnesium-alloy anode material ingot casting is subjected to homogenization heat treatment, heat treatment process is：Under sulphur powder protection, by magnesium
Alloy anode material ingot casting keeps the temperature 18h, subsequent ice water quenching at 360 DEG C, then 9h is kept the temperature at 400 DEG C, subsequent ice water quenching,
It is finally cooled to room temperature, obtains homogenization state alloy；
4) removal homogenization state alloy epidermis, 1 hour is kept the temperature at 350 DEG C, then keeps the temperature 3 hours at 380 DEG C, is carried out
Hot rolling, control pass deformation are 20%, and intermediate annealing process is carried out between each two passage, and temperature is 350 DEG C, soaking time
For 1.5h, finished product magnesium-alloy anode material is obtained.
Chemical property detection is carried out to the magnesium-alloy anode material, at room temperature (25 DEG C), in 3.5% NaCl solution
It tests to obtain corrosion potential to be -1.540V with potentiodynamic polarization, in 20mA/cm2Under constant current density averaged discharge current potential be-
1.688V.In 100mA/cm-2Averaged discharge current potential is -1.65V under constant current density.
Embodiment 4
1) by Mg, Al, Pb, Sn, Ga, Zn according to composition proportion：Al:5.9%, Zn:0.8%, Pb：4.9%, Sn：
1.1%, Ga：2.8%, surplus is magnesium, weighs raw material；
2) it protects under gas shielded, Mg is completely melt by 720~750 DEG C of smelting temperature, and Al, Pb, Sn, Ga, Zn is added and stirs
It mixes, assistant metal element is made to be completely melt and be mixed evenly with Mg, standing, which is poured into after ten minutes in steel die, obtains bulk
Magnesium-alloy anode material ingot casting；
3) magnesium-alloy anode material ingot casting is subjected to homogenization heat treatment, heat treatment process is：Under sulphur powder protection, by magnesium
Alloy anode material ingot casting keeps the temperature 17h, subsequent ice water quenching at 370 DEG C, then 5h is kept the temperature at 450 DEG C, subsequent ice water quenching,
It is finally cooled to room temperature, obtains homogenization state alloy；
4) removal homogenization state alloy epidermis, 1 hour is kept the temperature at 350 DEG C, then keeps the temperature 2.5 hours at 390 DEG C, into
Row hot rolling, control pass deformation is 20%, and intermediate annealing process is carried out between each two passage, and temperature is 360 DEG C, when heat preservation
Between be 0.5h, obtain finished product magnesium-alloy anode material.
Chemical property detection is carried out to the magnesium-alloy anode material, at room temperature (25 DEG C), in 3.5% NaCl solution
It tests to obtain corrosion potential to be -1.555V with potentiodynamic polarization, in 20mA/cm2Under constant current density averaged discharge current potential be-
1.693V.In 100mA/cm2Averaged discharge current potential is -1.60V under constant current density.
Comparative example 1
1) by Mg, Pb, Sn, Ga according to composition proportion：Pb：5%, Sn：1%, Ga：3%, surplus is magnesium, weighs raw material；
2) it protects under gas shielded, Mg is completely melt by 720~750 DEG C of smelting temperature, and Pb, Sn, Ga is added and stirs, makes
Assistant metal element is completely melt and is mixed evenly with Mg that standing, which is poured into after ten minutes in steel die, obtains blocky magnesium alloy
Anode material ingot casting；
3) magnesium-alloy anode material ingot casting is subjected to homogenization heat treatment, heat treatment process is：Under sulphur powder protection, by magnesium
Alloy anode material ingot casting keeps the temperature 16h, subsequent ice water quenching at 350 DEG C, then 8h is kept the temperature at 400 DEG C, subsequent ice water quenching,
It is finally cooled to room temperature, obtains homogenization state alloy；
4) removal homogenization state alloy epidermis, 1 hour is kept the temperature at 350 DEG C, then keeps the temperature 2.5 hours at 400 DEG C, into
Row hot rolling, control pass deformation is 20%, and intermediate annealing process is carried out between each two passage, and temperature is 400 DEG C, when heat preservation
Between be 0.5h, obtain finished product magnesium-alloy anode material.
Chemical property detection is carried out to the magnesium-alloy anode material, at room temperature (25 DEG C), in 3.5% NaCl solution
It tests to obtain open circuit potential (OCP) to be only -1.610V with potentiodynamic polarization, exist far below sample in other four groups of embodiments
20mA/cm2Under discharge potential (Fig. 4).
Claims (10)
1. a kind of magnesium-alloy anode material, using Mg as matrix element, it is characterised in that：Assistant metal element includes Pb, Sn, Ga,
The gross mass percentage of Pb, Sn, Ga in the alloy is not less than 7%.
2. magnesium-alloy anode material according to claim 1, it is characterised in that：Assistant metal element also has Al and Zn, and totally 5
Kind assistant metal element, the gross mass percentage of Al and Zn in the alloy are not less than 5%.
3. magnesium-alloy anode material according to claim 2, it is characterised in that：The weight percent of Al, Zn in the alloy
Respectively：Al：5.5~5.9%, Zn：0.5~0.8%.
4. according to claims 1 to 3 any one of them magnesium-alloy anode material, it is characterised in that：Tri- kinds of elements of Pb, Sn, Ga
Weight percent in the alloy is respectively：Pb：4.6~4.9%, Sn：0.8~1.1%, Ga：2.5~2.8%.
5. magnesium-alloy anode material according to claim 4, it is characterised in that：The mass content of tri- kinds of elements of Pb, Sn, Ga
Than for：M(Pb)：M(Sn)：M (Ga)=5：1：3.
6. a kind of preparation method of magnesium-alloy anode material, includes the following steps：
Matching by the element composition of magnesium-alloy anode material takes raw material, melting and casting to obtain as-cast magnesium alloy anode material；
As-cast magnesium alloy anode material is subjected to homogenization heat treatment, obtains the magnesium-alloy anode material of homogenization state；
The magnesium-alloy anode material hot rolling of state will be homogenized, obtains finished product magnesium-alloy anode material；
Wherein, the element of magnesium-alloy anode material is formed as described in any one of Claims 1 to 5.
7. preparation method according to claim 6, it is characterised in that：Smelting temperature is 720~750 DEG C.
8. the preparation method described according to claim 6 or 7, it is characterised in that：Homogenizing the operation being heat-treated includes：
As-cast magnesium alloy anode material is placed in 360~400 DEG C and keeps the temperature at least 8 hours, quenching；
At least 4 hours are kept the temperature in 400~450 DEG C, quenching postcooling to room temperature obtains the magnesium-alloy anode material of homogenization state；
Aforesaid operations carry out under reductive condition protection.
9. the preparation method described according to claim 6 or 7, it is characterised in that：The magnesium-alloy anode material of state is homogenized 350
~450 DEG C heat preservation at least 2 hours after carry out hot rolling.
10. the preparation method described according to claim 6 or 7, it is characterised in that：The purity of raw material not low 99.5%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923532A (en) * | 2019-12-13 | 2020-03-27 | 陕西易莱德新材料科技有限公司 | Alloy magnesium anode material and preparation method thereof |
| CN111180720A (en) * | 2019-10-22 | 2020-05-19 | 超威电源集团有限公司 | Aluminum air battery anode and preparation method thereof |
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