CN101705491A - High-temperature zinc alloy sacrificial anode - Google Patents
High-temperature zinc alloy sacrificial anode Download PDFInfo
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- CN101705491A CN101705491A CN200910230198A CN200910230198A CN101705491A CN 101705491 A CN101705491 A CN 101705491A CN 200910230198 A CN200910230198 A CN 200910230198A CN 200910230198 A CN200910230198 A CN 200910230198A CN 101705491 A CN101705491 A CN 101705491A
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- sacrificial anode
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- 229910001297 Zn alloy Inorganic materials 0.000 title claims abstract description 20
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 239000013535 sea water Substances 0.000 claims abstract description 10
- 239000011701 zinc Substances 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 9
- 239000010405 anode material Substances 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 238000004090 dissolution Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000005275 alloying Methods 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000005266 casting Methods 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052725 zinc Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 229910002804 graphite Inorganic materials 0.000 abstract description 3
- 239000010439 graphite Substances 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 230000005518 electrochemistry Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910052745 lead Inorganic materials 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000004927 fusion Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
The invention belongs to the technical field of corrosion and protection, and relates to a high-temperature zinc alloy sacrificial anode used for cathode protection, wherein alloy elements are added in a zinc substrate, a sacrificial anode material with high electrochemistry performance is obtained by controlling the proportion of AI and Mn elements, the electric capacity of the anode is larger than 790A h/kg, surface dissolving is uniform, and corrosion products are easy to fall off so as to be used for the cathode protection in high-temperature seawater; the formula of the zinc alloy sacrificial anode is as follows: 0.2 to 1.0 percent of AI, 0.05 to 0.2 percent of Mn, impurity content thereof is as follows: less than or equal to 0.03 percent of Pb, less than or equal to 0.002 percent of Cd, less than or equal to 0.001 percent of Cu, less than or equal to 0.001 percent of Fe, and the balance of Zn; carbon crucible is used for smelting zinc ingot in a heating furnace, AI and Mn are added into a molten zinc solution according to proportion, a graphite rod is used for stirring, deslagging is conducted, and the product is taken out of the furnace for casting; and the preparation technology is mature, the operation is simple and convenient, the proportion is reasonable, the service life is long, and the effect is good, thus being widely applied to the cathode protection in the seawater field in high temperature environment.
Description
Technical field:
The invention belongs to the corrosion and protection technical field, relate to the high-temperature zinc alloy sacrificial anode that a kind of galvanic protection is used.
Background technology:
In recent years, along with the development of offshore oil production and refining of petroleum industry, the mileage of oil pipeline increases sharply, and residing environment is numerous and complicated also, as seabed, soil etc.Oil pipeline will be corroded in these environment inevitably, the corrosion damage of oil pipeline not only can cause financial loss, and can since crude oil leakage cause environmental disaster or endanger public security, therefore, must take anti-corrosion measure to oil pipeline.For pipeline under the ocean, it is anticorrosion that main anti-corrosion measure is exactly coating and sacrificial protection associating.But, the corrosive environment of pipeline under the ocean has singularity: for improving the flowability of crude oil, often will heat, make that the envrionment temperature around the pipeline is everlasting between 50～70 ℃, therefore, existing sacrificial anode performance under this work condition environment all sharply descends.When at high temperature using as common ternary zinc anode, intergranular corrosion can take place, current efficiency significantly reduces, and current potential is shuffled, even current potential than iron and steel also just becomes, and not only can not protect the iron and steel facility, quickens its corrosion on the contrary.Traditional sacrificial aluminium alloy anode is surface passivation easily in high temperature seawater, forms one deck corrosion product duricrust, the magnitude of current takes place sharply descend, and does not have due provide protection.Therefore, need a kind of sacrificial anode material that is adapted at using in the high temperature seawater of development.The high-temperature zinc alloy anode has a tame manufacturer can make this product abroad, and its anodic actual capacitance only is 780Ah/kg, and integrated performance index also is difficult to satisfy the requirement for anticorrosion of respective environment.
Summary of the invention:
The objective of the invention is to overcome the shortcoming of prior art; seek to prepare a kind of novel sacrificial anode material; make it in high temperature seawater, have excellent electrochemical properties; anode capacity is greater than 780Ah/kg; surface dissolution is even; operating potential meets the requirement of GB/T 4950-2002, can be used for the galvanic protection of pipeline under the ocean.
To achieve these goals, the new type high temperature sacrificial zinc alloy anode material of the present invention's design adds alloying element by weight percentage in the zinc-base body, ratio by control Al, Mn element, obtain the sacrificial anode material of high electrochemical performance, the anodic electrical capacity is greater than 790Ah/kg, surface dissolution is even, and corrosion product comes off easily, is used for the galvanic protection of high temperature seawater; The weight percent prescription of its sacrificial zinc alloy anode is Al:0.2-1.0%; Mn:0.05-0.2%; Foreign matter content: Pb≤0.03%; Cd≤0.002%; Cu≤0.001%; Fe≤0.001%; Surplus is Zn.
The high-temperature zinc alloy sacrificial anode that the present invention relates to adopts conventional fusion casting processing and manufacturing, contains zinc ingot metal with the special graphite crucible, in process furnace zinc ingot metal is melted, according to certain proportioning, in fused zinc liquid, add Al and Mn, stir with graphite rod, slagging-off, tapping casting; Process furnace is selected coke stove, electric furnace, oil oven, steam stove etc. for use.Its chemical property sees Table 1.
The chemical property of table 1 high-temperature zinc alloy sacrificial anode (in 50 ℃ the natural sea-water)
| Open circuit potential, V (SCE) | Operating potential, V (SCE) | Actual capacitance, Ah/kg | Current efficiency, % | The dissolving situation |
| ??-1.09～-??1.05 | ??-1.05～-??1.00 | ??≥790 | ??≥97 | Product comes off easily, and surface dissolution is even |
The present invention compared with prior art, its preparation technology's method maturation, easy and simple to handle, reasonable ratio, long service life is protected effectively, can be widely used in the galvanic protection in the seawater field under the hot environment.
Embodiment:
Below by embodiment the present invention is further described.
Embodiment 1: the prescription of a kind of sacrificial zinc alloy anode that present embodiment relates to is (weight percent): Al:0.2%; Mn:0.05%; Foreign matter content: Pb≤0.03%; Cd≤0.002%; Cu≤0.001%; Fe≤0.001%; Surplus is Zn; High-temperature zinc alloy sacrificial anode adopts the fusion casting processing and manufacturing, and its chemical property sees Table 2.
Embodiment 2: the prescription that present embodiment relates to another kind of sacrificial zinc alloy anode is (weight percent): Al:1.0%; Mn:0.1%; Foreign matter content: Pb≤0.03%; Cd≤0.002%; Cu≤0.001%; Fe≤0.001%; Surplus is Zn; Sacrificial zinc alloy anode adopts the fusion casting processing and manufacturing, and its chemical property sees Table 2.
Embodiment 3: the prescription that present embodiment relates to another high-temperature zinc alloy sacrificial anode is (weight percent): Al:0.6%; Mn:0.2%; Foreign matter content: Pb≤0.03%; Cd≤0.002%; Cu≤0.001%; Fe≤0.001%; Surplus is Zn; Sacrificial zinc alloy anode adopts the fusion casting processing and manufacturing, and its chemical property sees Table 2.
According to GB/T 17848-1999 specified standards test method the zinc alloy anode chemical property is tested, the chemical property of each embodiment sees Table 2.
The chemical property of three embodiment high-temperature zinc alloy sacrificial anodes of table 2 (in 50 ℃ the natural sea-water)
Claims (1)
1. high-temperature zinc alloy sacrificial anode, it is characterized in that in the zinc-base body, adding by weight percentage alloying element, the ratio of control Al, Mn element obtains sacrificial anode material, the anodic electrical capacity is greater than 790Ah/kg, surface dissolution is even, corrosion product comes off easily, is used for the galvanic protection of high temperature seawater; The weight percent prescription of its sacrificial zinc alloy anode is Al:0.2-1.0%; Mn:0.05-0.2%; Foreign matter content: Pb≤0.03%; Cd≤0.002%; Cu≤0.001%; Fe≤0.001%; Surplus is Zn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910230198A CN101705491A (en) | 2009-11-20 | 2009-11-20 | High-temperature zinc alloy sacrificial anode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910230198A CN101705491A (en) | 2009-11-20 | 2009-11-20 | High-temperature zinc alloy sacrificial anode |
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| Publication Number | Publication Date |
|---|---|
| CN101705491A true CN101705491A (en) | 2010-05-12 |
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| CN200910230198A Pending CN101705491A (en) | 2009-11-20 | 2009-11-20 | High-temperature zinc alloy sacrificial anode |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418101A (en) * | 2011-11-29 | 2012-04-18 | 青岛双瑞海洋环境工程有限公司 | Composite sacrificial anode for repairing reinforced concrete structure |
| CN103103537A (en) * | 2013-02-28 | 2013-05-15 | 青岛双瑞海洋环境工程股份有限公司 | Novel zinc alloy sacrificial anode in hot seawater environment |
| WO2015084691A1 (en) * | 2013-12-06 | 2015-06-11 | Saudi Arabian Company | Cathodic protection automated current and potential measuring device for anodes protecting vessel internals |
| CN104862710A (en) * | 2015-06-09 | 2015-08-26 | 青岛双瑞海洋环境工程股份有限公司 | Environment-friendly sacrificial zinc alloy anode |
| CN104862530A (en) * | 2015-06-09 | 2015-08-26 | 青岛双瑞海洋环境工程股份有限公司 | Zinc alloy sacrificial anode applicable to hot seabed mud environment |
| CN110106509A (en) * | 2019-06-19 | 2019-08-09 | 青岛双瑞海洋环境工程股份有限公司 | Efficient sacrificial zinc alloy anode for high temperature crude oil sedimentary water environment |
| CN113046755A (en) * | 2021-03-10 | 2021-06-29 | 青岛双瑞海洋环境工程股份有限公司 | High-temperature-resistant zinc alloy sacrificial anode and preparation method thereof |
| CN116377442A (en) * | 2023-04-19 | 2023-07-04 | 山东大学 | A zinc alloy sacrificial anode material suitable for high temperature seawater environment |
| CN117051402A (en) * | 2023-08-10 | 2023-11-14 | 深圳市中金岭南有色金属股份有限公司韶关冶炼厂 | Zinc alloy sacrificial anode material with high driving potential and preparation method and application thereof |
-
2009
- 2009-11-20 CN CN200910230198A patent/CN101705491A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418101A (en) * | 2011-11-29 | 2012-04-18 | 青岛双瑞海洋环境工程有限公司 | Composite sacrificial anode for repairing reinforced concrete structure |
| CN102418101B (en) * | 2011-11-29 | 2013-07-24 | 青岛双瑞海洋环境工程股份有限公司 | Composite type sacrificial anode for repairing reinforced concrete structures |
| CN103103537A (en) * | 2013-02-28 | 2013-05-15 | 青岛双瑞海洋环境工程股份有限公司 | Novel zinc alloy sacrificial anode in hot seawater environment |
| CN103103537B (en) * | 2013-02-28 | 2014-12-17 | 青岛双瑞海洋环境工程股份有限公司 | Novel zinc alloy sacrificial anode in hot seawater environment |
| WO2015084691A1 (en) * | 2013-12-06 | 2015-06-11 | Saudi Arabian Company | Cathodic protection automated current and potential measuring device for anodes protecting vessel internals |
| US9441307B2 (en) | 2013-12-06 | 2016-09-13 | Saudi Arabian Oil Company | Cathodic protection automated current and potential measuring device for anodes protecting vessel internals |
| CN104862530A (en) * | 2015-06-09 | 2015-08-26 | 青岛双瑞海洋环境工程股份有限公司 | Zinc alloy sacrificial anode applicable to hot seabed mud environment |
| CN104862710A (en) * | 2015-06-09 | 2015-08-26 | 青岛双瑞海洋环境工程股份有限公司 | Environment-friendly sacrificial zinc alloy anode |
| CN104862530B (en) * | 2015-06-09 | 2016-12-07 | 青岛双瑞海洋环境工程股份有限公司 | A kind of sacrificial zinc alloy anode being applicable to hot sea mud environment |
| CN104862710B (en) * | 2015-06-09 | 2017-07-28 | 青岛双瑞海洋环境工程股份有限公司 | A kind of environmentally friendly sacrificial zinc alloy anode |
| CN110106509A (en) * | 2019-06-19 | 2019-08-09 | 青岛双瑞海洋环境工程股份有限公司 | Efficient sacrificial zinc alloy anode for high temperature crude oil sedimentary water environment |
| CN113046755A (en) * | 2021-03-10 | 2021-06-29 | 青岛双瑞海洋环境工程股份有限公司 | High-temperature-resistant zinc alloy sacrificial anode and preparation method thereof |
| CN116377442A (en) * | 2023-04-19 | 2023-07-04 | 山东大学 | A zinc alloy sacrificial anode material suitable for high temperature seawater environment |
| CN117051402A (en) * | 2023-08-10 | 2023-11-14 | 深圳市中金岭南有色金属股份有限公司韶关冶炼厂 | Zinc alloy sacrificial anode material with high driving potential and preparation method and application thereof |
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Open date: 20100512 |