CN105734375B - A kind of magnesium alloy sacrificial anode material containing Sb - Google Patents

A kind of magnesium alloy sacrificial anode material containing Sb Download PDF

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Publication number
CN105734375B
CN105734375B CN201610225010.4A CN201610225010A CN105734375B CN 105734375 B CN105734375 B CN 105734375B CN 201610225010 A CN201610225010 A CN 201610225010A CN 105734375 B CN105734375 B CN 105734375B
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CN
China
Prior art keywords
magnesium alloy
sacrificial anode
magnesium
anode
alloy sacrificial
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CN201610225010.4A
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Chinese (zh)
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CN105734375A (en
Inventor
王莹
李萍
贾利晓
张东晓
徐玉梅
崔扬
赵靓雯
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洛阳理工学院
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C23/00Alloys based on magnesium
    • C22C23/02Alloys based on magnesium with aluminium as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-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
    • C23F13/00Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/12Electrodes characterised by the material
    • C23F13/14Material for sacrificial anodes

Abstract

The invention discloses a kind of magnesium alloy sacrificial anode material containing Sb, the magnesium alloy sacrificial anode material is made up of the component of following mass percent:Al 5.0%~5.2%, Zn 0.6%~0.8%, Sb 0.1%~0.3%, surplus are Mg and inevitable impurity.The magnesium alloy sacrificial anode material containing Sb of the present invention; alloy compositions are Mg Al Zn Sb; on the basis of Zn and Al are applied in combination; by adding Sb elements; crystal grain thinning simultaneously improves tissue, makes anode material consumption uniform, service life extension; suitable for the cathodic protection under soil, seawater, corrosion of water heater or similar environment, have broad application prospects.

Description

A kind of magnesium alloy sacrificial anode material containing Sb
Technical field
The invention belongs to magnesium-alloy anode material technical field, and in particular to a kind of magnesium alloy sacrificial anode material containing Sb.
Background technology
Economic loss caused by the corrosion of metal material is huge, and it is that one kind prevents to carry out electrochemical protection using sacrificial anode The effective ways of metallic material corrosion, the extension of raising and service life to metal material decay resistance have important meaning Justice.Due to sacrificial anode have do not need additional power source, without interference with close on metallic facility, current dissipation ability is good, is easy to pipe The advantages that managing and safeguarding, thus be used widely in anticorrosion engineering.The chemical property of magnesium alloy is preferable, is often used as Sacrificial anode material, the cathode material of apparatus is protected, to extend the service life of cathode material.
But ordinary magnesium alloy anode material in the prior art, due in composition design and preparation technology, cause Alloy grain is thick, uneven microstructure, and element aluminum forms Mg with magnesium17Al12Phase, and with net distribution in crystal boundary, easily and magnesium Matrix forms micro cell, accelerates the consumption of sacrificial anode material, while makes the consumption of anode material uneven, influences sacrificial anode The service life of material.
The content of the invention
It is an object of the invention to provide a kind of magnesium alloy sacrificial anode material containing Sb, solves existing sacrificial magnesium alloy anode material Material consumes uneven, the problem of influenceing service life in corrosive environment.
In order to realize the above object the technical solution adopted in the present invention is:
A kind of magnesium alloy sacrificial anode material containing Sb, is made up of the component of following mass percent:Al 5.0%~ 5.2%th, Zn 0.6%~0.8%, Sb 0.1%~0.3%, surplus are Mg and inevitable impurity.
The gross mass content of impurity element S i, Fe, Cu and Ni in anode material is less than 0.2%.
The magnesium alloy sacrificial anode material containing Sb of the present invention, alloy compositions Mg-Al-Zn-Sb, the alloy is in Zn and Al groups On the basis of closing use, to ensure that performance and control cost, Al addition elect 5.0~5.2wt% as, Zn addition is elected as 0.6~0.8wt%;A small amount of Sb (0.1~0.3wt%) is added, generates dystectic Mg3Sb2Phase, effective forming core can be used as Core, so as to crystal grain thinning, while the Mg that in alloy will be in net distribution17Al12Mutually disconnect, and then improve tissue;Pass through refinement Crystal grain and improvement tissue, improve the uniformity of tissue, and then magnesium-alloy anode material is consumed in corrosive environment uniformly.
The magnesium alloy sacrificial anode material containing Sb of the present invention, on the basis of Zn and Al are applied in combination, by adding Sb members Element, crystal grain thinning simultaneously improve tissue, make anode material consumption uniform;Gained magnesium alloy sacrificial anode material has when in use to disappear The characteristics of uniform is consumed, the characteristics of depletion rate is slow, service life is long, suitable under soil, seawater, corrosion of water heater or similar environment Cathodic protection, have broad application prospects.
Above-mentioned magnesium alloy sacrificial anode material containing Sb, be using pure magnesium, fine aluminium, pure zinc, star antimony as raw material carry out melting after, Made from casting.
Raw materials used pure magnesium (Mg), fine aluminium (Al), pure zinc (Zn), star antimony (Sb) are pure magnesium, fine aluminium, pure zinc, star antimony. The temperature of the casting is 720 DEG C.
Preferably, the preparation method of the magnesium alloy sacrificial anode material containing Sb is:Take the pure magnesium of alloy raw material (Mg), fine aluminium (Al), pure zinc (Zn), star antimony (Sb), melting is carried out using corundum crucible and induction furnace, obtains magnesium liquid;In CO2+SF6Mixed gas is protected Under shield, steel die is poured into after magnesium liquid is warming up into 720 DEG C, obtains magnesium alloy ingot, as described sacrificial magnesium alloy anode material Material.
The preparation method of the magnesium alloy sacrificial anode material containing Sb of the present invention, it is using pure magnesium, fine aluminium, pure zinc, star antimony as original Material carries out melting, casting;Gained magnesium alloy sacrificial anode material containing Sb has consumes the characteristics of uniform under corrosive environment;The preparation Method technique is simple, and raw material sources are extensive, is adapted to large-scale industrial production.
Embodiment
With reference to embodiment, the present invention is further illustrated.
In embodiment, the pure magnesium of raw material used (Mg), fine aluminium (Al), pure zinc (Zn), star antimony (Sb) are commercially available Product (industrial goods).Wherein, the pure magnesium of raw material (Mg), fine aluminium (Al), the purity of pure zinc (Zn) are 99.8%, raw material star antimony (Sb) Purity is 99.5%.
Embodiment 1
The magnesium alloy sacrificial anode material containing Sb of the present embodiment, it is made up of the component of following mass percent:Al 5.0%, Zn 0.8%, Sb 0.1%, surplus are Mg and inevitable impurity;Wherein impurity element S i, Fe, Cu and Ni is in anode material In gross mass content be less than 0.2%.
The preparation method of the magnesium alloy sacrificial anode material containing Sb of the present embodiment, it is according to said components and containing measuring alloy The pure magnesium of raw material (Mg), fine aluminium (Al), pure zinc (Zn), star antimony (Sb), melting is carried out using corundum crucible and induction furnace, obtains magnesium liquid; In CO2+SF6Under mixed gas protected, steel die is poured into after magnesium liquid is warming up into 720 DEG C, obtains magnesium alloy ingot, as institute State magnesium alloy sacrificial anode material.
Embodiment 2
The magnesium alloy sacrificial anode material containing Sb of the present embodiment, it is made up of the component of following mass percent:Al 5.1%, Zn 0.7%, Sb 0.2%, surplus are Mg and inevitable impurity;Wherein impurity element S i, Fe, Cu and Ni is in anode material In gross mass content be less than 0.2%.
The preparation method of the magnesium alloy sacrificial anode material containing Sb of the present embodiment is the same as embodiment 1.
Embodiment 3
The magnesium alloy sacrificial anode material containing Sb of the present embodiment, it is made up of the component of following mass percent:Al 5.2%, Zn 0.6%, Sb 0.3%, surplus are Mg and inevitable impurity;Wherein impurity element S i, Fe, Cu and Ni is in anode material In gross mass content be less than 0.2%.
The preparation method of the magnesium alloy sacrificial anode material containing Sb of the present embodiment is the same as embodiment 1.
Experimental example
This experimental example detects to magnesium alloy sacrificial anode material containing Sb obtained by embodiment 1-3, as a result as shown in table 1.
Wherein, comparative example is commercial Mg alloy AZ91.
The performance test results of magnesium alloy sacrificial anode material containing Sb obtained by the embodiment 1-3 of table 1
Object OCP (V) Current efficiency (%) Expenditure Levels in corrosive environment
Embodiment 1 –1.70V 55% It is uniform without obvious pit, consumption
Embodiment 2 –1.75V 57% It is uniform without obvious pit, consumption
Embodiment 3 –1.80V 60% It is uniform without obvious pit, consumption
Comparative example –1.65V 52% There is pit, consumption is uneven
As it can be seen from table 1 present invention gained magnesium alloy sacrificial anode material containing Sb, OCP for -1.70~- 1.80V, current efficiency are 55%~60%, and material consumption is uniform in corrosive environment, has broad application prospects.

Claims (1)

  1. A kind of 1. magnesium alloy sacrificial anode material containing Sb, it is characterised in that:It is made up of the component of following mass percent:Al 5.0%~5.2%, Zn 0.6%~0.8%, Sb 0.1%~0.3%, surplus are Mg and inevitable impurity;It is described to contain Sb magnesium alloy sacrificial anode materials are after carrying out melting as raw material using pure magnesium, fine aluminium, pure zinc, star antimony, made from casting.
CN201610225010.4A 2016-04-12 2016-04-12 A kind of magnesium alloy sacrificial anode material containing Sb CN105734375B (en)

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106609372A (en) * 2016-10-21 2017-05-03 洛阳理工学院 Magnesium alloy sacrificial anode containing Sm and Sb
CN106591842A (en) * 2016-10-21 2017-04-26 洛阳理工学院 Magnesium alloy sacrificial anode containing Sm and Bi
CN106591844A (en) * 2016-10-21 2017-04-26 洛阳理工学院 Magnesium alloy sacrificial anode containing Sn and Sb
CN106591843A (en) * 2016-10-21 2017-04-26 洛阳理工学院 Magnesium alloy sacrificial anode containing Sn and Bi
CN106987746A (en) * 2017-03-29 2017-07-28 河南科技大学 A kind of water heater cast magnesium alloy anode material and preparation method thereof
CN106756367A (en) * 2017-03-29 2017-05-31 河南科技大学 A kind of water heater complex magnesium alloy anode material and preparation method thereof
CN107142483B (en) * 2017-05-04 2019-07-26 洛阳理工学院 A kind of complex magnesium alloy sacrificial anode material and preparation method thereof containing Sm
CN107130249B (en) * 2017-05-04 2019-07-26 洛阳理工学院 A kind of complex magnesium alloy sacrificial anode material and preparation method thereof containing Nd
CN109461942A (en) * 2018-11-22 2019-03-12 河南科技大学 A kind of air cell aluminum alloy anode material and preparation method thereof, air cell

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CN101775604A (en) * 2010-03-05 2010-07-14 崔晓鹏 Magnesium alloy composite sacrificial anode material and preparation method thereof
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