CN105838951B - A kind of magnesium alloy of sacrificial anode containing La - Google Patents
A kind of magnesium alloy of sacrificial anode containing La Download PDFInfo
- Publication number
- CN105838951B CN105838951B CN201610352445.5A CN201610352445A CN105838951B CN 105838951 B CN105838951 B CN 105838951B CN 201610352445 A CN201610352445 A CN 201610352445A CN 105838951 B CN105838951 B CN 105838951B
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- Prior art keywords
- sacrificial anode
- magnesium alloy
- anode containing
- impurity
- magnesium
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Classifications
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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
- C22C23/02—Alloys based on magnesium with aluminium 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
Abstract
The present invention discloses a kind of magnesium alloy of sacrificial anode containing La, composed of the following components according to mass percent：7.0~7.2% Al, 0.6~0.8% Zn, 0.1~0.3% La, surplus are Mg and impurity.The total amount of Si, Fe, Cu and Ni are less than 0.2% in the impurity.The preparation method of the magnesium alloy of sacrificial anode containing La, it is smelting, cast using Mg, Al, Zn and Mg La intermediate alloys as raw material to obtain the final product.Preparation process of the present invention is simple, and anode consumption is uniform, suitable for the cathodic protection under soil, seawater, corrosion of water heater or similar environment, has broad application prospects.
Description
Technical field
The invention belongs to Magnesium sacrificial anode technical field, and in particular to a kind of magnesium alloy of sacrificial anode containing La and preparation side
Method.
Background technology
It is a kind of effective ways for preventing metallic material corrosion to carry out electrochemical protection using sacrificial anode.In industry and day
Often in application, magnesium alloy is a kind of most common sacrificial anode material, not only with current potential is moderate, current efficiency is high, corrosion production
The caducous feature of thing, and have the characteristics that low easy to melting and casting, simple production process, production cost.It is but common
Magnesium-alloy anode material (such as AZ31, AZ91, AZ63) causes alloy grain due in composition design and preparation process
It is thick, nonuniform organization, and aluminium forms Mg with magnesium17Al12Phase, and micro- electricity is easily formed with magnesium matrix in crystal boundary with net distribution
Pond, accelerates the consumption of sacrificial anode material, and makes consumption uneven, influences the service life of sacrificial anode.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of magnesium alloy of sacrificial anode containing La and preparation method, the sacrifice
Anode magnesium alloy preparation process is simple, and the uniformity of tissue is higher, so that anode consumption is uniform, suitable for soil, seawater, heat
Cathodic protection under the corrosive environments such as hydrophone, has broad application prospects.
The technical solution adopted in the present invention is：A kind of magnesium alloy of sacrificial anode containing La, according to mass percent by following
Component forms：7.0~7.2% Al, 0.6~0.8% Zn, 0.1~0.3% La, surplus are Mg and impurity.
The preparation method of the magnesium alloy of sacrificial anode containing La, using Mg, Al, Zn and Mg-La intermediate alloy as raw material, warp
Melting, cast to obtain the final product.
Compared with prior art, the present invention at least tool has the advantage that and beneficial effect：
The group of magnesium alloys of sacrificial anode containing La provided by the invention is divided into Mg-Al-Zn-La.The present invention is combined using Al with Zn
Use, the addition of Al is 7.0~7.2wt%, and the addition of Zn is 0.6~0.8wt%；Add a small amount of La generation high-melting-points
Al2La phases, can be used as effective forming core core, so that crystal grain thinning, while the Mg that in alloy will be in net distribution17Al12Xiang Duan
Open, and then improve tissue；By crystal grain thinning and improve tissue, improve the uniformity of tissue, and then make magnesium-alloy anode material
Consumed in corrosive environment uniform.
Sacrificial anode magnesium alloy preparation process provided by the invention is simple, and anode consumption is uniform, under the premise of performance is ensured
Cost is relatively low, suitable for the cathodic protection under soil, seawater, corrosion of water heater or similar environment, has broad application prospects.
Embodiment
A kind of magnesium alloy of sacrificial anode containing La, it is composed of the following components according to mass percent：7.0~7.2% Al, 0.6
~0.8% Zn, 0.1~0.3% La, surplus are Mg and impurity；The total amount of Si, Fe, Cu and Ni are less than in the impurity
0.2%。
The preparation method for consuming the uniformly magnesium alloy of sacrificial anode containing La, to be closed among Mg, Al, Zn and Mg-La
Gold is raw material, smelting, cast to obtain the final product.Concretely comprise the following steps：Using Mg, Al, Zn and Mg-La intermediate alloy as raw material, using corundum
Crucible, induction furnace melting, in CO2With SF6Under the protection of mixed gas, mixed smelting alloy is warming up to 730 DEG C, pours into steel
Mould is cast, that is, obtains the magnesium alloy of sacrificial anode containing La.
The magnesium alloy of sacrificial anode containing La of the invention is by pure magnesium (Mg), fine aluminium (Al), pure zinc (Zn), magnesium lanthanum (Mg-
La) intermediate alloy is formed by melting and casting for raw material, the pure magnesium of the raw material arrived involved in the specific embodiment of the invention (Mg), pure
Aluminium (Al), pure zinc (Zn), magnesium lanthanum (Mg-La) intermediate alloy are commercial product.The purity of raw material is 99.8% Mg, Al, Zn,
99.5% Mg-La intermediate alloys.
To become apparent present disclosure, below in conjunction with specific embodiment, the present invention will be described in detail.
Embodiment 1：
A kind of magnesium alloy of sacrificial anode containing La, it is composed of the following components according to mass percent：7.0% Al, 0.8%
Zn, 0.1% La, surplus are Mg and impurity；The total amount of Si, Fe, Cu and Ni are less than 0.2% in the impurity.
The preparation method for consuming the uniformly magnesium alloy of sacrificial anode containing La, concretely comprises the following steps：With Mg, Al, Zn and
Mg-La intermediate alloys are raw material, using corundum crucible, induction furnace melting, obtain mixed smelting liquid, spare；Then in CO2With SF6
Under the protection of mixed gas, mixed smelting liquid is warming up to 730 DEG C, steel die is poured into and is cast, that is, obtain sacrificing containing La
Anode magnesium alloy.
Embodiment 2：
A kind of magnesium alloy of sacrificial anode containing La, it is composed of the following components according to mass percent：7.1% Al, 0.7%
Zn, 0.2% La, surplus are Mg and impurity；The total amount of Si, Fe, Cu and Ni are less than 0.2% in the impurity.
The preparation process of the present embodiment sacrificial anode containing La magnesium alloy is the same as embodiment 1.
Embodiment 3：
A kind of magnesium alloy of sacrificial anode containing La, it is composed of the following components according to mass percent：7.2% Al, 0.6%
Zn, 0.3% La, surplus are Mg and impurity；The total amount of Si, Fe, Cu and Ni are less than 0.2% in the impurity.
The preparation process of the present embodiment sacrificial anode containing La magnesium alloy is the same as embodiment 1.
Experimental example
This experimental example is detected the magnesium alloy of sacrificial anode containing La obtained by embodiment 1-3, and comparative example is AZ91 magnesium alloys,
The results are shown in Table 1.
Table 1：The Properties of Magnesium Alloy testing result of sacrificial anode containing La obtained by embodiment 1-3
As can be seen from Table 1, sacrificial anode magnesium alloy of the invention, open circuit potential are -1.72~-1.80V, current efficiency
For 56~60%, material consumption is uniform in corrosive environment, has broad application prospects.
Claims (2)
- A kind of 1. magnesium alloy of sacrificial anode containing La, it is characterised in that：It is composed of the following components according to mass percent：7.0~ 7.2% Al, 0.6~0.8% Zn, 0.1~0.3% La, surplus are Mg and impurity.
- A kind of 2. preparation method of magnesium alloy of sacrificial anode containing La according to claim 1, it is characterised in that：With Mg, Al, Zn and Mg-La intermediate alloys are raw material, smelting, cast to obtain the final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610352445.5A CN105838951B (en) | 2016-05-25 | 2016-05-25 | A kind of magnesium alloy of sacrificial anode containing La |
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| CN201610352445.5A CN105838951B (en) | 2016-05-25 | 2016-05-25 | A kind of magnesium alloy of sacrificial anode containing La |
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| Publication Number | Publication Date |
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| CN105838951A CN105838951A (en) | 2016-08-10 |
| CN105838951B true CN105838951B (en) | 2018-04-13 |
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| CN201610352445.5A Expired - Fee Related CN105838951B (en) | 2016-05-25 | 2016-05-25 | A kind of magnesium alloy of sacrificial anode containing La |
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| CN109136598A (en) * | 2018-09-28 | 2019-01-04 | 河南科技大学 | A kind of magnalium indium rare earth anode material and preparation method thereof, magnesium air battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2892449B2 (en) * | 1990-07-05 | 1999-05-17 | 住友金属鉱山株式会社 | Magnesium alloy for galvanic anode |
| CN101775604A (en) * | 2010-03-05 | 2010-07-14 | 崔晓鹏 | Magnesium alloy composite sacrificial anode material and preparation method thereof |
| CN102808122A (en) * | 2012-08-29 | 2012-12-05 | 焦作盛世达轻合金技术有限公司 | Process for manufacturing magnesium alloy sacrificial anode bar |
| CN104562045A (en) * | 2013-10-15 | 2015-04-29 | 张万友 | Novel high-performance magnesium alloy galvanic anode material |
| KR20150076459A (en) * | 2013-12-26 | 2015-07-07 | 주식회사 포스코 | Magnesium alloy and method for manufacturing the same |
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