CN103205762A - Zirconium and magnesium alloy containing sacrificial anode material and preparation method thereof - Google Patents
Zirconium and magnesium alloy containing sacrificial anode material and preparation method thereof Download PDFInfo
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- CN103205762A CN103205762A CN2013101191957A CN201310119195A CN103205762A CN 103205762 A CN103205762 A CN 103205762A CN 2013101191957 A CN2013101191957 A CN 2013101191957A CN 201310119195 A CN201310119195 A CN 201310119195A CN 103205762 A CN103205762 A CN 103205762A
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- zirconium
- magnesium alloy
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- magnesium
- sacrificial anode
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Abstract
The invention discloses a zirconium and magnesium alloy containing sacrificial anode material and a preparation method thereof. The zirconium and magnesium alloy containing sacrificial anode material comprises the components in percentage by weight of: 0.03-0.07% of zirconium, 0.5-1.3% of manganese, less than or equal to 0.05% of single impurity, less than or equal to 0.3% of total weight and the balance of magnesium. The preparation method comprises the following steps of: selecting industrial pure magnesium and industrial pure manganous chloride in percentage by weight; mixing and heating to 775-785 DEG C to melt fully; standing and cooling to 750-760 DEG C; adding magnesium and zirconium middle alloy in corresponding percentage by weight to melt, and uniformly stir; and casting the molten liquid in a low pressure casting mode to obtain the zirconium and magnesium alloy. According to the zirconium and magnesium alloy containing sacrificial anode material provided by the invention, the zirconium and magnesium alloy containing sacrificial anode material is uniform in consumption and long in service life by adding zirconium to reduce content of magnesium and silicon phases in the raw material. The anode material prepared by the method is simple in process and less in defect of cast.
Description
Technical field
The present invention relates to a kind of magnesium alloy and preparation method thereof, particularly a kind of sacrificial anode magnesium alloy and preparation method thereof.
Background technology
The loss that Corrosion of Metallic Materials causes is huge, and metallic substance is carried out corrosion prevention, and it is significant to improve its corrosion resistance nature.The chemical property of magnesium alloy is better, is often used as sacrificial anode material, the negative electrode of equipment configuration is protected, to prolong the work-ing life of cathode material.
But, ordinary magnesium alloy all contains a certain amount of impurity silicon, and the silicon current potential is higher, causes parasitic corrosion easily, and magnesium alloy anode corrosion efficient is reduced, silicon forms magnesium two silicon phases with magnesium, and with net distribution in crystal boundary, the easy microbattery that forms with magnesium matrix, the consumption of acceleration sacrificial anode material, and make anode consumption inhomogeneous, influence work-ing life and the utilization ratio of sacrificial anode material.
Summary of the invention
At the problem that existing magnesium alloy materials exists, it is higher to the purpose of this invention is to provide a kind of current efficiency, the sacrificial anode magnesium alloy that anode consumption is even, rate of utilization is high, the life-span is long.
A kind of zirconium magnesium alloy sacrificial anode material that contains, it is described that to contain the zirconium magnesium alloy sacrificial anode material composed of the following components by mass percentage:
Zirconium: 0.03%～0.07%,
Manganese: 0.5%～1.3%,
Silicon :≤0.05%,
Impurity: single≤0.05%, total amount≤0.3%
All the other are magnesium.
As the improvement of this programme, described to contain the zirconium magnesium alloy sacrificial anode material composed of the following components by mass percentage:
Zirconium: 0.05%,
Manganese: 0.8%,
Silicon :≤0.05%,
Impurity: single≤0.05%, total amount≤0.3%
All the other are magnesium.
As the further improvement of this programme, describedly contain that zirconium and silicon mass ratio are 5～10:1 in the zirconium magnesium alloy sacrificial anode material.
The present invention also provides the method that a kind of technology is simple, low-cost, high quality prepares above-mentioned sacrificial anode material.
A kind ofly prepare the described method that contains the zirconium magnesium alloy sacrificial anode material, choose pure magnesium and technical pure manganous chloride according to mass percent, Hybrid Heating to 775～785 ℃ make its whole fusings, leave standstill and cool to 750～760 ℃, the magnesium zirconium master alloy that adds respective quality per-cent, make its fusing and stir, the gained liquation is cast according to the low-pressure casting mode, obtain as cast condition and contain the zirconium magnesium alloy.
As the improvement of this programme, described preparation contains the method for zirconium magnesium alloy sacrificial anode material, and described low-pressure casting adopts SF
6Gas is exerted pressure to liquid magnesium alloy.
Beneficial effect of the present invention is: all contain a certain amount of impurity silicon in ordinary magnesium alloy and the pure magnesium, the silicon current potential is higher, causes parasitic corrosion easily, and silicon and magnesium form Mg
2The Si phase, with net distribution in crystal boundary, the easy microbattery that forms with magnesium matrix, the consumption of acceleration sacrificial anode material, and make anode consumption inhomogeneous; In alloy, add a certain amount of zirconium can with matrix in Si form ZrSi
2, β～ZrSi and α～ZrSi isoequilibrium intermediate phase, and these intermediate phase are easy to remove from liquation, thus silicon and Mg in the alloy
2The content of Si reduces parasitic corrosion, makes that magnesium alloy sacrificial anode material consumption is even, rate of utilization is high, the life-span is long; Adopt low-pressure casting can improve material use efficiency, and reduce internal defect in cast, improve the casting preparation efficiency.
Embodiment
Total development and Design design is " to contain zirconium magnesium alloy anode expendable material ": thus obtain a kind of magnesium alloy sacrificial anode material even, that rate of utilization is high, the life-span is long that consumes by adjusting each synergistic chemical element and ratio thereof.
Embodiment one: the mass percent of zirconium is 0.05% in the present embodiment, the siliceous amount per-cent of impurity≤0.05%, and the mass percent of manganese is 0.8%, all the other are deposited except idol and are magnesium the impurity.
At first get 980kg pure magnesium, 20kg technical pure MnCl
2Be heated to 780 ℃ in electrical crucible, all leave standstill for some time after the fusing, treat that temperature reduces to 755 ℃, add and contain zirconium 25～30% magnesium zirconium master alloy 2kg, the limit edged stirs, and treats that all stirred 1～2 minute the fusing back.Adopt semicontinuous suction casting mode to cast above-mentioned magnesium alloy liquation then: to adopt teeming formula casting system to cast during casting, and use SF
6Gas reduces pressure to liquid magnesium alloy in the crucible.
Embodiment two: the difference of present embodiment and embodiment one is that the mass percent of zirconium is 0.042% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 1.6kg.
Embodiment three: present embodiment difference is that the mass percent of zirconium is 0.044% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 1.6kg.
Embodiment four: present embodiment difference is that the mass percent of zirconium is 0.038% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 1.52kg.
Embodiment five: present embodiment difference is that the mass percent of zirconium is 0.049% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 1.9kg.
Embodiment six: present embodiment difference is that the mass percent of zirconium is 0.048% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 1.9kg.
Embodiment seven: present embodiment difference is that the mass percent of zirconium is 0.042% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 1.6kg.
Embodiment eight: present embodiment difference is that the mass percent of zirconium is 0.067% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 2.28kg.
Embodiment nine: present embodiment difference is that the mass percent of zirconium is 0.046% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 1.7kg.
Embodiment ten: present embodiment difference is that the mass percent of zirconium is 0.056% in the present embodiment, and preparation adds when containing the zirconium magnesium alloy sacrificial anode material, and to contain zirconium 25～30% magnesium zirconium master alloy quality be 2.0kg.
At last, the zirconium magnesium alloy that contains that makes is carried out the corrosive nature test, table 1 adds magnesium zirconium master alloy front and back alloy silicone content, open circuit potential, current efficiency contrast for test records.
Table 1
As can be seen from the table, behind the magnesium zirconium master alloy of adding respective amount, silicone content declines to a great extent in the alloy, and current efficiency obviously promotes.Zirconium and silicon form ZrSi
2, β～ZrSi and α～ZrSi isoequilibrium intermediate phase, and these intermediate phase are easy to remove from liquation, thereby reduce silicon and Mg in the alloy
2The content of Si reduces parasitic corrosion, make magnesium alloy sacrificial anode material consumption evenly, current efficiency improves.
At last, it is pointed out that when the manganese element mass percent is in 0.5%～1.3% scope that the described current efficiency of zirconium magnesium alloy that contains is still more than 50%; Adopt the mode that adds pure magnesium, technical pure Manganse Dioxide, zirconium magnesium master alloy to add elements such as magnesium, silicon, manganese, zirconium among the embodiment; it is unrestricted but this just is used for the explanation of the technical program; known in this field; adopting other modes to add elements such as magnesium, silicon, manganese, zirconium does not have essential distinction with the application, still belongs to protection scope of the present invention.
Claims (5)
1. one kind contains the zirconium magnesium alloy sacrificial anode material, it is characterized in that: described to contain the zirconium magnesium alloy sacrificial anode material composed of the following components by mass percentage:
Zirconium: 0.03%～0.07%,
Manganese: 0.5%～1.3%,
Silicon :≤0.05%,
Impurity: single≤0.05%, total amount≤0.3%,
All the other are magnesium.
2. contain the zirconium magnesium alloy sacrificial anode material according to claim 1, it is characterized in that: described to contain the zirconium magnesium alloy sacrificial anode material composed of the following components by mass percentage:
Zirconium: 0.05%,
Manganese: 0.8%,
Silicon :≤0.05%,
Impurity: single≤0.05%, total amount≤0.3%,
All the other are magnesium.
3. contain the zirconium magnesium alloy sacrificial anode material according to claim 1, it is characterized in that: describedly contain that zirconium and silicon mass ratio are 5～10:1 in the zirconium magnesium alloy sacrificial anode material.
4. one kind prepares the method that contains the zirconium magnesium alloy sacrificial anode material according to claim 1, it is characterized in that: choose pure magnesium and technical pure manganous chloride according to mass percent, Hybrid Heating to 775～785 ℃ make its whole fusings, leave standstill and cool to 750～760 ℃, the magnesium zirconium master alloy that adds respective quality per-cent, make its fusing and stir, the gained liquation is cast according to the low-pressure casting mode, obtain as cast condition and contain the zirconium magnesium alloy.
5. contain the method for zirconium magnesium alloy sacrificial anode material as preparation as described in the claim 4, it is characterized in that: described low-pressure casting adopts SF
6Gas exerts pressure for the magnesium alloy liquation.
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347639A (en) * | 2007-07-20 | 2009-01-21 | 中国科学院金属研究所 | Medical magnesium alloy/calcium orthophosphate composite material |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101347639A (en) * | 2007-07-20 | 2009-01-21 | 中国科学院金属研究所 | Medical magnesium alloy/calcium orthophosphate composite material |
Non-Patent Citations (4)
| Title |
|---|
| J.GROBNER ET AL.: ""Selection of promising quaternary candidates from Mg-Mn-(Sc,Gd,Y,Zr) for development of creep-resistant magnesium alloys"", 《JOURNAL OF ALLOYS AND COMPOUNDS》 * |
| 宋曰海: ""高性能铝、锌、镁合金系列牺牲阳极材料的研究"", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
| 李冠群等: ""主要合金元素对镁合金组织及耐蚀性能的影响"", 《铸造技术》 * |
| 范靖亚: ""制取含锆镁合金时怎样添加锆"", 《轻合金加工技术》 * |
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