CN106756367A - A kind of water heater complex magnesium alloy anode material and preparation method thereof - Google Patents
A kind of water heater complex magnesium alloy anode material and preparation method thereof Download PDFInfo
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- CN106756367A CN106756367A CN201710197685.7A CN201710197685A CN106756367A CN 106756367 A CN106756367 A CN 106756367A CN 201710197685 A CN201710197685 A CN 201710197685A CN 106756367 A CN106756367 A CN 106756367A
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- pure
- anode material
- water heater
- magnesium alloy
- alloy anode
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/12—Electrodes characterised by the material
- C23F13/14—Material for sacrificial anodes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention discloses a kind of water heater complex magnesium alloy anode material and preparation method thereof, it is made up of the component of following mass percent：3.0~3.5%Al, 6.0~6.5%Zn, 0.1~0.3%Bi, 0.1~0.3%Sb, balance of Mg and inevitable impurity.Magnesium-alloy anode material of the invention is free of noble element, is obtained by casting, is not required to crimp, with cost of alloy is cheap, preparation process is simple and the features such as uniform anode consumption, it is adaptable to the protection of corrosive environment lower water-heater inner bag, has a extensive future.
Description
Technical field
The present invention relates to magnesium-based anode technology field, a kind of water heater complex magnesium alloy anode material is particularly related to
Material and preparation method thereof.
Background technology
The corrosion of metal material causes huge economic loss, and it is that one kind is prevented to carry out electrochemical protection using sacrificial anode
The effective ways of metallic material corrosion, can improve the decay resistance and service life of metal material.The electrochemistry of magnesium alloy
Preferably the anode material of water heater can be often used as, to cathode material（Water heater liner）Protected, the longevity is used to extend it
Life.
But, for the magnesium-alloy anode material of water heater, such as AZ31, intensity and chemical property are limited, it usually needs
Adding price rare earth higher, noble metal or intermediate alloy etc. carries out alloying, causes cost of alloy to be substantially increased, will also be in casting
Crimp is carried out after making, causes alloy preparation technology complicated, and magnesium alloy plasticity is poor, crimp can produce some fine fisssures
Line, the corrosion consumption of accelerating anode material, influences its protecting effect to cathode materials such as water heater liners.
The content of the invention
The present invention is in order to solve the above-mentioned technical problem, there is provided a kind of water heater complex magnesium alloy anode material and its preparation
Method.
The technical solution adopted in the present invention is：A kind of water heater complex magnesium alloy anode material, according to quality percentage
Than consisting of the following composition：3.0~3.5% Al, 6.0~6.5% Zn, 0.1~0.3% Bi and 0.1~0.3% Sb,
Balance of Mg and inevitable impurity, Si, Fe, Cu and Ni total amount are less than 0.2% in the impurity.
The purity of described Mg, Al and Zn is 99.8%, and the purity of the Bi and Sb is 99.5%.
A kind of water heater preparation method of complex magnesium alloy anode material, comprises the following steps：
Step one, pure magnesium, fine aluminium, pure zinc, pure bismuth and star antimony are weighed according to the mass percent described in claim 1, will weighed
Pure magnesium, fine aluminium and pure zinc be put into it is standby in corundum crucible；
Step 2, by the corundum crucible in step one in CO2+SF6Mixed gas protection under, heated, until crucible
Interior pure magnesium, fine aluminium and pure zinc melt completely, are subsequently adding pure bismuth and star antimony, continue to be heated to 710 DEG C it is standby；
Step 3, hybrid metal liquid prepared by step 2 is poured into and is preheated in advance in 150 DEG C of steel die, cooled and solidified
After obtain product.
CO in the step 22And SF6Volume ratio be 99:1.
Beneficial effects of the present invention：
（1）The present invention is applied in combination using Zn and Al, to ensure casting character and intensity and chemical property, the addition of Al
Elect 3.0~3.5wt% as, the addition of Zn elects 6.0~6.5wt% as；For uniform formation, add a small amount of Bi, Sb generation high
Fusing point Mg3Bi2、Mg3Sb2As effective forming core core, so that crystal grain thinning, improves tissue, its structural homogenity and list
One addition Bi or Sb is compared, and in addition to it can make the strength of materials and further improve, can also make magnesium-alloy anode material in corrosion
Consume uniform in environment, improve its protecting effect to cathode material；
（2）The present invention is for raw material passes through with pure magnesium (Mg), fine aluminium (Al), pure zinc (Zn), pure bismuth (Bi), star antimony (Sb)
Melting and casting is formed, it is not necessary to add price rare earth higher, noble metal or intermediate alloy etc. to carry out alloying, it is not required that
Crimp is carried out after casting, extensively, preparation process is simple can be prevented effectively from the micro-crack pair that crimp is caused to raw material sources
The influence of follow-up protecting effect, cost of alloy is relatively low；
（3）The present invention organizes more fine uniform after adding Bi, Sb element, and alloy can again consumed in water heater corrosive environment
It is uniform and depletion rate is slow, it is ensured that alloy has a extensive future to the protecting effect of cathode material.
Specific embodiment
A kind of water heater complex magnesium alloy anode material, consists of the following composition according to mass percent：3.0~3.5%
Al, 6.0~6.5% Zn, 0.1~0.3% Bi and 0.1~0.3% Sb, balance of Mg and inevitable impurity, institute
Si, Fe, Cu and Ni total amount are less than 0.2% in stating impurity.
The purity of described Mg, Al and Zn is 99.8%, and the purity of the Bi and Sb is 99.5%.
A kind of water heater preparation method of complex magnesium alloy anode material, comprises the following steps：
Step one, pure magnesium, fine aluminium, pure zinc, pure bismuth and star antimony are weighed according to the mass percent described in claim 1, will weighed
Pure magnesium, fine aluminium and pure zinc be put into it is standby in corundum crucible；
Step 2, by the corundum crucible in step one in CO2+SF6Mixed gas protection under, heated, until crucible
Interior pure magnesium, fine aluminium and pure zinc melt completely, are subsequently adding pure bismuth and star antimony, continue to be heated to 710 DEG C it is standby；
Step 3, hybrid metal liquid prepared by step 2 is poured into and is preheated in advance in 150 DEG C of steel die, cooled and solidified
After obtain product.
CO in the step 22And SF6Volume ratio be 99:1.
The present invention is expanded on further below in conjunction with specific embodiment.
Embodiment 1
A kind of water heater complex magnesium alloy anode material, consists of the following composition according to mass percent：3% Al, 6.0%
Zn, 0.1% Bi and 0.1% Sb, balance of Mg and inevitable impurity, Si, Fe, Cu and Ni total amount are small in the impurity
In 0.2%.
A kind of water heater preparation method of complex magnesium alloy anode material, comprises the following steps：
Step one, pure magnesium, fine aluminium, pure zinc, pure bismuth and star antimony are weighed according to above-mentioned mass percent, and the pure magnesium, pure that will be weighed
Aluminium and pure zinc are put into standby in corundum crucible；
Step 2, by the corundum crucible in step one in CO2+SF6Mixed gas protection under, heated, until crucible
Interior pure magnesium, fine aluminium and pure zinc melt completely, are subsequently adding pure bismuth and star antimony, continue to be heated to 710 DEG C it is standby；
Step 3, hybrid metal liquid prepared by step 2 is poured into and is preheated in advance in 150 DEG C of steel die, cooled and solidified
After obtain product.
CO in the step 22And SF6Volume ratio be 99:1.
Embodiment 2
A kind of water heater complex magnesium alloy anode material, consists of the following composition according to mass percent：3.5% Al,
6.5% Zn, 0.3% Bi and 0.3% Sb, balance of Mg and inevitable impurity, Si, Fe, Cu and Ni in the impurity
Total amount is less than 0.2%.
The preparation technology of the present embodiment is with embodiment 1
Embodiment 3
A kind of water heater complex magnesium alloy anode material, consists of the following composition according to mass percent：3.2% Al,
6.2% Zn, 0.2% Bi and 0.2% Sb, balance of Mg and inevitable impurity, Si, Fe, Cu and Ni in the impurity
Total amount is less than 0.2%.
The preparation technology of the present embodiment is with embodiment 1
Performance detection carried out to complex magnesium alloy anode material prepared by embodiment 1 ~ 3, and by testing result and comparative example A Z31
Magnesium alloy is compared, as a result as shown in table 1.
The embodiment 1-3 of table 1 gained complex magnesium alloy anode material performance test results
Comparing result shows that magnesium-alloy anode material prepared by the present invention is obtained, preparation process is simple by casting, open circuit electricity
Position is -1.65~-1.70V, and current efficiency is 60~65%, and material consumption is uniform in corrosive environment, to the moon such as water heater liners
Pole material has good protecting effect, has a extensive future.
Claims (4)
1. a kind of water heater complex magnesium alloy anode material, it is characterised in that：Consisted of the following composition according to mass percent：
3.0~3.5% Al, 6.0~6.5% Zn, 0.1~0.3% Bi and 0.1~0.3% Sb, balance of Mg and inevitable
Impurity, in the impurity Si, Fe, Cu and Ni total amount be less than 0.2%.
2. a kind of water heater complex magnesium alloy anode material as claimed in claim 1, it is characterised in that：Described Mg, Al and
The purity of Zn is 99.8%, and the purity of the Bi and Sb is 99.5%.
3. the method for preparing a kind of water heater complex magnesium alloy anode material as claimed in claim 1, it is characterised in that：Bag
Include following steps：
Step one, pure magnesium, fine aluminium, pure zinc, pure bismuth and star antimony are weighed according to the mass percent described in claim 1, will weighed
Pure magnesium, fine aluminium and pure zinc be put into it is standby in corundum crucible；
Step 2, by the corundum crucible in step one in CO2+SF6Mixed gas protection under, heated, until in crucible
Pure magnesium, fine aluminium and pure zinc melt completely, be subsequently adding pure bismuth and star antimony, continue to be heated to 710 DEG C it is standby；
Step 3, hybrid metal liquid prepared by step 2 is poured into and is preheated in advance in 150 DEG C of steel die, cooled and solidified
After obtain product.
4. a kind of water heater as claimed in claim 3 preparation method of complex magnesium alloy anode material, it is characterised in that：Institute
State CO in step 22And SF6Volume ratio be 99:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710197685.7A CN106756367A (en) | 2017-03-29 | 2017-03-29 | A kind of water heater complex magnesium alloy anode material and preparation method thereof |
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| CN201710197685.7A CN106756367A (en) | 2017-03-29 | 2017-03-29 | A kind of water heater complex magnesium alloy anode material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441729A (en) * | 2018-03-28 | 2018-08-24 | 武汉中原长江科技发展有限公司 | A kind of magnesium-alloy anode material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966611A (en) * | 2013-02-06 | 2014-08-06 | 北京有色金属研究总院 | Processing method for magnesium alloy anode bar |
| CN104694805A (en) * | 2015-02-27 | 2015-06-10 | 河南科技大学 | Low-cost multi-component heat-resistant magnesium alloy and preparation method of magnesium alloy |
| CN105671557A (en) * | 2016-04-12 | 2016-06-15 | 洛阳理工学院 | Bi containing magnesium alloy sacrificial anode material |
| CN105734375A (en) * | 2016-04-12 | 2016-07-06 | 洛阳理工学院 | Sb-containing magnesium alloy sacrificial anode material |
-
2017
- 2017-03-29 CN CN201710197685.7A patent/CN106756367A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966611A (en) * | 2013-02-06 | 2014-08-06 | 北京有色金属研究总院 | Processing method for magnesium alloy anode bar |
| CN104694805A (en) * | 2015-02-27 | 2015-06-10 | 河南科技大学 | Low-cost multi-component heat-resistant magnesium alloy and preparation method of magnesium alloy |
| CN105671557A (en) * | 2016-04-12 | 2016-06-15 | 洛阳理工学院 | Bi containing magnesium alloy sacrificial anode material |
| CN105734375A (en) * | 2016-04-12 | 2016-07-06 | 洛阳理工学院 | Sb-containing magnesium alloy sacrificial anode material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441729A (en) * | 2018-03-28 | 2018-08-24 | 武汉中原长江科技发展有限公司 | A kind of magnesium-alloy anode material and preparation method thereof |
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