CN109750199A - A kind of anode magnesium alloy and the preparation method and application thereof - Google Patents
A kind of anode magnesium alloy and the preparation method and application thereof Download PDFInfo
- Publication number
- CN109750199A CN109750199A CN201910172454.XA CN201910172454A CN109750199A CN 109750199 A CN109750199 A CN 109750199A CN 201910172454 A CN201910172454 A CN 201910172454A CN 109750199 A CN109750199 A CN 109750199A
- Authority
- CN
- China
- Prior art keywords
- magnesium alloy
- anode
- preparation
- magnesium
- anode magnesium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention belongs to Magnesium sacrificial anode technical fields, and in particular to a kind of anode magnesium alloy and the preparation method and application thereof.The anode magnesium alloy is grouped as by group as follows by mass percentage: 4.0~4.2%Al, 0.8~1.0%Zn, 0.4~0.6%Pr, surplus Mg.The anode magnesium alloy is made by induction furnace melting, permanent mold casting.The present invention refines crystal grain and improvement tissue by the way that rare earth element Pr is added, and has the characteristics that preparation process simply and dissolution consumption is uniform, suitable for the cathodic protection of steel component parts under soil, seawater, corrosion of water heater or similar environment, have broad application prospects.
Description
Technical field
The invention belongs to Magnesium sacrificial anode technical fields, and in particular to a kind of anode magnesium alloy and preparation method thereof with answer
With.
Background technique
In order to reduce huge economic losses caused by metallic material corrosion, carrying out electrochemical protection using sacrificial anode is one
The effective method of kind.Magnesium metal has relatively negative electrode potential -2.37V (vsSHE), is defeated by-the 2.31V and Zn-1.25V of aluminium,
Therefore, when using magnesium and magnesium alloy as the anode material of power supply in use, relatively negative electrode potential can be the electric discharge of anode
Biggish driving force is provided, to provide biggish discharge current.Magnesium metal possesses biggish capacitance, and theoretical capacity is
2205A.h/kg, it will be further appreciated that, the density of magnesium metal is small, therefore it possesses biggish mass energy density, is suitable for
It discharges and uses for anode material.
Magnesium alloy is often used as sacrificial anode material, corrosion protection is carried out to the cathode material of important apparatus, to prolong
The service life of long cathode material.But ingredient design and prepare it is technologic due to, ordinary magnesium alloy anode material
(such as AZ31) often coarse grains, nonuniform organization, and aluminium and magnesium form netted Mg17Al12Phase is easy to be formed with magnesium matrix
Micro cell keeps the consumption of anode material uneven, influences the service life of anode material.
Summary of the invention
For overcome the deficiencies in the prior art and disadvantage, the primary purpose of the present invention is that providing a kind of anode magnesium alloy,
The magnesium alloy includes metal praseodymium, is corrosion protection magnesium alloy, is consumed uniformly in corrosive environment, is suitable for soil, seawater, heat
The cathodic protection of steel component parts under the corrosive environments such as hydrophone.
Another object of the present invention is to provide the preparation methods of above-mentioned anode magnesium alloy.
A further object of the present invention is to provide the applications of above-mentioned anode magnesium alloy.
The purpose of the invention is achieved by the following technical solution:
A kind of anode magnesium alloy is grouped as by group as follows by mass percentage:
4.0~4.2%Al, 0.8~1.0%Zn, 0.4~0.6%Pr, surplus Mg；
The anode magnesium alloy is grouped as by the group of mass percent below:
4.0%Al, 1.0%Zn, 0.6%Pr, surplus Mg；
The preparation method of the anode magnesium alloy, comprises the following steps:
It will be closed among the pure magnesium of anode magnesium alloy each raw material component (Mg), fine aluminium (Al), pure zinc (Zn) and magnesium-praseodymium (Mg-Pr)
Gold mixing, melting and casting obtain anode magnesium alloy；
The purity of the raw material components is preferably 99.8% or more；
The condition of the melting and casting is preferred are as follows: in CO2+SF6Melting under gas shield, to magnesium after raw material components fusing
It when aluminium alloy is warming up to 710~730 DEG C, pours into steel die, obtains anode magnesium alloy；
The melting and casting preferably carries out in crucible and induction furnace；
The crucible is preferably corundum crucible；
The liquid magnesium alloy is preferably warming up to 720 DEG C；
Application of the anode magnesium alloy in Magnesium sacrificial anode preparation field；
The principle of the present invention:
Anode magnesium alloy group provided by the invention is divided into Mg-Al-Zn-Pr.Wherein, each component effect is as follows:
Al: for alloy strength, aluminium is beneficial element.Aluminium and magnesium form Mg17Al12Phase, this is mutually Mg-Al alloy
Main hardening constituent at room temperature, can be improved magnesium alloy room temperature intensity, improve magnesium-alloy anode material service life indirectly.But it is right
For corrosion resistance, aluminium is both harmful element and beneficial element.Aluminium can form Mg with magnesium17Al12Phase, this mutually and magnesium matrix by
In the difference of electrode potential, primary battery can be formed, magnesium matrix is anode, Mg at this time17Al12It is mutually cathode.Work as Mg17Al12Mutually with
Net distribution is near crystal boundary, due to grain boundaries (Mg17Al12Phase) it is larger with intra-die (magnesium matrix) difference in Electrode Potential, it can be with
Accelerate the corrosion rate of intra-die, at this time cathode phase Mg17Al12Promote the corrosion of magnesium；Work as Mg17Al12The net distribution quilt of phase
It disconnects, pattern and distribution are optimized, and tissue becomes uniformly, to add Mg17Al12There is a preferable corrosion resistance, after crystal grain refinement
Tissue becomes more uniform, will reduce grain boundaries (Mg17Al12Phase) with the difference in Electrode Potential of intra-die (magnesium matrix), so
Improve the corrosion resistance of alloy entirety, at this time cathode phase Mg17Al12Inhibition is played to the corrosion of magnesium.The present invention selects Al's
Additional amount is 4.0~4.2wt%, and lower than the range, then alloy strength is too low, influences anode material service life；Higher than the range
The Mg then generated17Al12It is mutually excessive, it reticulates and is distributed in crystal boundary, cause alloy structure uneven, promote corrosion and cause to corrode
Unevenly, it also will affect service life.
Zn: the ability of the anti-seawater corrosion of alloy can be improved in the addition of zinc, and being primarily due to zinc can be dissolved into magnesium
Matrix plays solution strengthening effect, improves alloy material intensity, while reducing intra-die and grain boundaries component difference, improves
Structural homogenity improves alloy corrosion resistance.In addition, Zn can also reduce the harm of the impurity such as Fe, Ni.The present invention selects adding for Zn
Entering amount is 0.8~1.0wt%.
Pr: on the one hand, can be dissolved into magnesium matrix, play solution strengthening effect, improve alloy material intensity；It is dilute simultaneously
Soil generates dystectic intermetallic compound phase Al with aluminium2Pr phase can be used as effective forming core core, refines crystal grain, plays
Refined crystalline strengthening effect, further increases alloy material intensity；On the other hand, a part of aluminium is consumed, Mg is reduced17Al12The quantity of phase
And disconnect its net distribution, intra-die and grain boundaries component difference are reduced, the equal of structural homogenity and electrode potential is improved
The corrosion of alloy can also be become uniform while improving alloy corrosion resistance by even property.The present invention select the additional amount of Pr for
0.4~0.6wt%.
In Mg-Al-Zn-Pr system anode magnesium alloy, to guarantee the strength of materials, there are certain aluminium content, but aluminium content
It causes alloy structure and corrosion uneven when excessively high, can not play the role of being effectively protected to cathode material.So to be added dilute
Native Pr element, further reinforced alloys refine crystal grain, and uniform formation reduces Mg17Al12The illeffects of phase, makes alloy in corruption
There should be certain corrosion resistance in erosion environment, corrosion uniformly, improves service life, plays and be effectively protected to cathode material again
Effect.
The present invention has the following advantages and effects with respect to the prior art:
(1) existing magnesium-alloy anode material there are aiming at the problem that, the present invention provides anode magnesium alloy, which is
Corrosion protection magnesium alloy, can reinforced alloys, refine crystal grain, uniform formation, reduce Mg17Al12The illeffects of phase, makes alloy
There should be certain corrosion resistance in corrosive environment, corrosion uniformly, is improved service life, played effectively to cathode material again
Protective effect.
(2) anode magnesium alloy preparation process provided by the invention is simple, at low cost, with pure magnesium (Mg), fine aluminium (Al), pure zinc
(Zn) and magnesium-praseodymium (Mg-Pr) intermediate alloy is raw material, only needs simple melting and casting, is not required to other any processing, is suitable for work
Industry metaplasia produces.
(3) anode magnesium alloy provided by the invention is suitable for steel component parts under soil, seawater, corrosion of water heater or similar environment
Cathodic protection, have broad application prospects.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
The present invention relates to the pure magnesium of raw material (Mg), fine aluminium (Al), pure zinc (Zn) and magnesium-praseodymium (Mg-Pr) intermediate alloy it is equal
For commercial product, purity is 99.8% or more.
Embodiment 1
A kind of anode magnesium alloy is grouped as by group as follows by mass percentage:
4.0%Al, 1.0%Zn, 0.6%Pr, surplus Mg；
The preparation method of the anode magnesium alloy, comprises the following steps:
It will be closed among the pure magnesium of anode magnesium alloy each raw material component (Mg), fine aluminium (Al), pure zinc (Zn) and magnesium-praseodymium (Mg-Pr)
Gold mixing, is placed in corundum crucible (corundum crucible is placed in induction furnace), in CO2+SF6Mixed gas protected lower melting, raw material
It after fusing when liquid magnesium alloy is warming up to 720 DEG C, is cast in steel die, obtains anode magnesium alloy ingot casting.
Embodiment 2
A kind of anode magnesium alloy is grouped as by group as follows by mass percentage:
4.1%Al, 0.9%Zn, 0.5%Pr, surplus Mg；
The preparation method of the anode magnesium alloy, comprises the following steps:
It will be closed among the pure magnesium of anode magnesium alloy each raw material component (Mg), fine aluminium (Al), pure zinc (Zn) and magnesium-praseodymium (Mg-Pr)
Gold mixing, is placed in corundum crucible (corundum crucible is placed in induction furnace), in CO2+SF6Mixed gas protected lower melting, raw material
It after fusing when liquid magnesium alloy is warming up to 730 DEG C, is cast in steel die, obtains anode magnesium alloy ingot casting.
Embodiment 3
A kind of anode magnesium alloy is grouped as by group as follows by mass percentage:
4.2%Al, 0.8%Zn, 0.4%Pr, surplus Mg；
The preparation method of the anode magnesium alloy, comprises the following steps:
It will be closed among the pure magnesium of anode magnesium alloy each raw material component (Mg), fine aluminium (Al), pure zinc (Zn) and magnesium-praseodymium (Mg-Pr)
Gold mixing, is placed in corundum crucible (corundum crucible is placed in induction furnace), in CO2+SF6Mixed gas protected lower melting, raw material
It after fusing when liquid magnesium alloy is warming up to 710 DEG C, is cast in steel die, obtains anode magnesium alloy ingot casting.
Comparative example 1
A kind of anode magnesium alloy is grouped as by group as follows by mass percentage:
4.0%Al, 1.0%Zn, surplus Mg；
The preparation method of the anode magnesium alloy, comprises the following steps:
The pure magnesium of anode magnesium alloy each raw material component (Mg), fine aluminium (Al) and pure zinc (Zn) are mixed, being placed in corundum crucible (will
Corundum crucible is placed in induction furnace) in, in CO2+SF6Mixed gas protected lower melting is warming up to after melting sources to liquid magnesium alloy
It at 720 DEG C, is cast in steel die, obtains anode magnesium alloy ingot casting.
Comparative example 2
A kind of anode magnesium alloy is grouped as by group as follows by mass percentage:
4.0%Al, 1.0%Zn, 1.0%Pr, surplus Mg；
The preparation method of the anode magnesium alloy, comprises the following steps:
It will be closed among the pure magnesium of anode magnesium alloy each raw material component (Mg), fine aluminium (Al), pure zinc (Zn) and magnesium-praseodymium (Mg-Pr)
Gold mixing, is placed in corundum crucible (corundum crucible is placed in induction furnace), in CO2+SF6Mixed gas protected lower melting, raw material
It after fusing when liquid magnesium alloy is warming up to 720 DEG C, is cast in steel die, obtains pole magnesium alloy ingot.
Comparative example 3
A kind of anode magnesium alloy is grouped as by group as follows by mass percentage::
4.0%Al, 1.0%Zn, 0.1%Pr, surplus Mg；
The preparation method of the anode magnesium alloy, comprises the following steps:
By the pure magnesium of anode magnesium alloy each raw material component (Mg), fine aluminium (Al), pure zinc (Zn), magnesium-praseodymium (Mg-Pr) intermediate alloy
Mixing, is placed in corundum crucible (corundum crucible is placed in induction furnace), in CO2+SF6Mixed gas protected lower melting, raw material are molten
It after change when liquid magnesium alloy is warming up to 720 DEG C, is cast in steel die, obtains anode magnesium alloy ingot casting.
Effect example
By anode magnesium alloy made from anode magnesium alloy made from Examples 1 to 3, comparative example 1~3 and commercial magnesium
Alloy AZ31 is detected, method particularly includes: in 3.5%NaCl solution, open circuit potential, electric current are tested using three-electrode system
Expenditure Levels in efficiency and corrosive environment.The results are shown in Table 1.
Anode magnesium alloy material property testing result made from 1 Examples 1 to 3 of table
As it can be seen from table 1 corrosion protection magnesium alloy of the invention, is made by casting, preparation process is simple, open circuit
Current potential is -1.65~-1.72V, and current efficiency is 58~62%, and material consumption is uniform in corrosive environment, there is wide answer
Use prospect.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. a kind of anode magnesium alloy, it is characterised in that be grouped as by group as follows by mass percentage:
4.0~4.2%Al, 0.8~1.0%Zn, 0.4~0.6%Pr, surplus Mg.
2. anode magnesium alloy described in claim 1, it is characterised in that be grouped as by the group of mass percent below:
4.0%Al, 1.0%Zn, 0.6%Pr, surplus Mg.
3. the preparation method of anode magnesium alloy of any of claims 1 or 2, characterized by comprising the steps of:
The pure magnesium of anode magnesium alloy each raw material component, fine aluminium, pure zinc and magnesium-praseodymium intermediate alloy are mixed, melting and casting obtains anode
Magnesium alloy.
4. the preparation method of anode magnesium alloy according to claim 3, it is characterised in that:
The purity of the raw material components is 99.8% or more.
5. the preparation method of anode magnesium alloy according to claim 3, it is characterised in that:
The condition of the melting and casting are as follows: in CO2+SF6Melting under gas shield, to liquid magnesium alloy liter after raw material components fusing
When temperature is to 710~730 DEG C, pours into steel die, obtain anode magnesium alloy.
6. the preparation method of anode magnesium alloy according to claim 5, it is characterised in that:
The melting and casting carries out in crucible and induction furnace.
7. the preparation method of anode magnesium alloy according to claim 6, it is characterised in that:
The excellent crucible is corundum crucible.
8. the preparation method of anode magnesium alloy according to claim 5, it is characterised in that:
The liquid magnesium alloy is warming up to 720 DEG C.
9. application of the anode magnesium alloy of any of claims 1 or 2 in Magnesium sacrificial anode preparation field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910172454.XA CN109750199A (en) | 2019-03-07 | 2019-03-07 | A kind of anode magnesium alloy and the preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910172454.XA CN109750199A (en) | 2019-03-07 | 2019-03-07 | A kind of anode magnesium alloy and the preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109750199A true CN109750199A (en) | 2019-05-14 |
Family
ID=66406876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910172454.XA Pending CN109750199A (en) | 2019-03-07 | 2019-03-07 | A kind of anode magnesium alloy and the preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109750199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647001A (en) * | 2020-12-20 | 2021-04-13 | 东北电力大学 | AZ31M alloy and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE68910313T2 (en) * | 1988-03-07 | 1994-02-24 | Allied Signal Inc | MAGNESIUM ALLOY FOR BLOCK CASTING WITH IMPROVED CORROSION RESISTANCE. |
| JPH0853722A (en) * | 1994-08-10 | 1996-02-27 | Kobe Steel Ltd | Production of magnesium-base alloy excellent in high temperature creep strength |
| WO2001048837A2 (en) * | 1999-12-13 | 2001-07-05 | Energy Conversion Devices, Inc. | Method for making hydrogen storage alloy |
| DE102006057719A1 (en) * | 2005-12-15 | 2007-07-05 | Salzgitter Magnesium Technologie Gmbh | Magnesium sheet metal and strip obtained by cast rolling, thin strip- and/or thin slab-casting of an alloy composition having e.g. magnesium and aluminum and finish-rolling the composition, useful in vehicle lightweight constructions |
| CN101831581A (en) * | 2010-05-22 | 2010-09-15 | 太原新美联轻合金科技有限公司 | High strength and toughness rare earth magnesium alloy |
-
2019
- 2019-03-07 CN CN201910172454.XA patent/CN109750199A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE68910313T2 (en) * | 1988-03-07 | 1994-02-24 | Allied Signal Inc | MAGNESIUM ALLOY FOR BLOCK CASTING WITH IMPROVED CORROSION RESISTANCE. |
| JPH0853722A (en) * | 1994-08-10 | 1996-02-27 | Kobe Steel Ltd | Production of magnesium-base alloy excellent in high temperature creep strength |
| WO2001048837A2 (en) * | 1999-12-13 | 2001-07-05 | Energy Conversion Devices, Inc. | Method for making hydrogen storage alloy |
| DE102006057719A1 (en) * | 2005-12-15 | 2007-07-05 | Salzgitter Magnesium Technologie Gmbh | Magnesium sheet metal and strip obtained by cast rolling, thin strip- and/or thin slab-casting of an alloy composition having e.g. magnesium and aluminum and finish-rolling the composition, useful in vehicle lightweight constructions |
| CN101831581A (en) * | 2010-05-22 | 2010-09-15 | 太原新美联轻合金科技有限公司 | High strength and toughness rare earth magnesium alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647001A (en) * | 2020-12-20 | 2021-04-13 | 东北电力大学 | AZ31M alloy and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105734375B (en) | A kind of magnesium alloy sacrificial anode material containing Sb | |
| CN105671557B (en) | A kind of magnesium alloy sacrificial anode material containing Bi | |
| CN101148767B (en) | Aluminum-zinc-indium series sacrificial anode material | |
| CN100432294C (en) | High petential magnesium alloy sacrificial anode material and its manufacturing method | |
| CN105779837A (en) | Gd containing sacrificial anode magnesium alloy | |
| CN102808122A (en) | Process for manufacturing magnesium alloy sacrificial anode bar | |
| CN101775604A (en) | Magnesium alloy composite sacrificial anode material and preparation method thereof | |
| CN105803465B (en) | A kind of magnesium alloy sacrificial anode material containing Sm | |
| CN109778197A (en) | One kind anode magnesium alloy containing Yb and the preparation method and application thereof | |
| CN103131924A (en) | Sm-containing Mg-Al-Zn heat-resisting deformed magnesium alloy | |
| Zhang et al. | The effects of Sn content on the corrosion behavior and mechanical properties of Mg–5Gd–3Y–x Sn–0.5 Zr alloys | |
| CN101509092A (en) | Anti-corrosion Mg-Al-Zn-Mn cast magnesium alloy containing rare earth elementarysubstance Er | |
| CN109722580A (en) | One kind anode magnesium alloy containing Dy and the preparation method and application thereof | |
| CN109750199A (en) | A kind of anode magnesium alloy and the preparation method and application thereof | |
| CN101407880A (en) | Mg-Zn-Zr-Nd magnesium alloy and preparation thereof | |
| CN109750198A (en) | One kind magnesium-alloy anode material containing Eu and the preparation method and application thereof | |
| CN107142483B (en) | A kind of complex magnesium alloy sacrificial anode material and preparation method thereof containing Sm | |
| EP4206359A1 (en) | Ce-containing magnesium alloy sacrificial anode and preparation method therefor and application thereof | |
| CN106834852B (en) | A kind of high strength anti-corrosion magnesium alloy | |
| CN107130249B (en) | A kind of complex magnesium alloy sacrificial anode material and preparation method thereof containing Nd | |
| CN106987746A (en) | A kind of water heater cast magnesium alloy anode material and preparation method thereof | |
| CN103088347A (en) | Aluminum alloy sacrificial anode material for tank storage coiled tube and preparation method of aluminum alloy sacrificial anode material | |
| CN106591844A (en) | Magnesium alloy sacrificial anode containing Sn and Sb | |
| CN109338375A (en) | A kind of high-performance Al-Zn-In series sacrificial anode material and preparation method thereof | |
| CN103820688B (en) | A kind of rare earth magnesium electrode materials and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190514 |
|
| RJ01 | Rejection of invention patent application after publication |