Sacrificial anode for deep sea environment and manufacturing method thereof

A sacrificial anode, deep-sea environment technology, applied in the field of sacrificial anode materials, can solve the problems of increased alloy manufacturing cost, marine environmental pollution, particle shedding, etc., and achieve the effect of reducing anode cost and high current efficiency

Inactive Publication Date: 2011-08-17
李振国
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the magnesium in this alloy formula is easy to produce black water, smelly water and particle shedding when magnesium dissolves, causing marine environmental pollution. In addition, rare elements titanium, gallium, and manganese are added to the alloy to make the alloy, The content of indium is also relatively high, resulting in a significant increase in the manufacturing cost of the alloy, which is not conducive to popularization and use

Method used

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  • Sacrificial anode for deep sea environment and manufacturing method thereof
  • Sacrificial anode for deep sea environment and manufacturing method thereof
  • Sacrificial anode for deep sea environment and manufacturing method thereof

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Experimental program
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Embodiment 1

[0031] Embodiment 1: The label is sample C1.

[0032] Aluminum is used as raw material, and elements zinc, indium, and silicon are added, and the weight percentage of each component is as follows: zinc 3.5%, indium 0.015%, silicon 0.15%; total amount of impurities ≤ 0.16%, among which, impurity iron ≤ 0.12%, Impurity copper ≤ 0.005%; the balance is aluminum. First, weigh aluminum ingots, zinc ingots, elemental indium and elemental silicon according to the mass percentage, and the total amount of impurities in the selected aluminum ingots is ≤0.16%; then wrap the indium and silicon with aluminum foil, and melt the aluminum ingots in a resistance furnace crucible at 750-800°C, then add zinc ingots, press the alloy element package into molten aluminum after melting, degassing, and slag removal, stir evenly after melting, remove slag, cast in a cast iron mold, let it cool naturally, and get Cast rod; process the cast rod into a φ16mm×48mm electrochemical performance test sample a...

Embodiment 2

[0033] Embodiment two: label is sample C2

[0034] Aluminum is used as raw material, and elements zinc, indium, and silicon are added, and the weight percentage of each component is as follows: zinc 4.0%, indium 0.01%, silicon 0.10%; total amount of impurities ≤ 0.16%, among which, impurity iron ≤ 0.13%, Impurity copper ≤ 0.004%; the balance is aluminum. First, weigh aluminum ingots, zinc ingots, elemental indium and elemental silicon according to the mass percentage, and the total amount of impurities in the selected aluminum ingots is ≤0.16%; then wrap the indium and silicon with aluminum foil, and melt the aluminum ingots in a resistance furnace crucible at 750-800°C, then add zinc ingots, press the alloy element package into molten aluminum after melting, degassing, and slag removal, stir evenly after melting, remove slag, cast in a cast iron mold, let it cool naturally, and get Cast rod; process the cast rod into a φ16mm×48mm electrochemical performance test sample and a...

Embodiment 3

[0035] Embodiment three: label is sample C3

[0036] Aluminum is used as raw material, and elements zinc, indium, and silicon are added, and the weight percentage of each component is as follows: zinc 4.5%, indium 0.02%, silicon 0.20%; total amount of impurities ≤ 0.16%, among which, impurity iron ≤ 0.13%, Impurity copper ≤ 0.006%; the balance is aluminum. First, weigh aluminum ingots, zinc ingots, elemental indium and elemental silicon according to the mass percentage, and the total amount of impurities in the selected aluminum ingots is ≤0.16%; then wrap the indium and silicon with aluminum foil, and melt the aluminum ingots in a resistance furnace crucible at 750~800℃, then add zinc ingots, after melting, degassing, and slag removal, press the alloy element package into the molten aluminum, stir evenly after melting, remove slag, cast in a cast iron mold, let it cool naturally, and get Cast rod; process the cast rod into a φ16mm×48mm electrochemical performance test sample a...

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Abstract

The invention discloses a sacrificial anode for deep sea environment. The sacrificial anode comprises main components by weight percent: 3.0-5.0% of zinc, 0.01-0.02% of indium, 0.10-0.20% of silicon and less than or equal to 0.16% of impurities, wherein the impurities comprise less than or equal to 0.13% of iron, less than or equal to 0.006% of copper and the balance of aluminum. The sacrificial anode has the working potential of -1.12 to -1.05V, the current efficiency of more than or equal to 93% and the capacitance of more than or equal to 2600 in the deep sea environment, and is even in corrosion, and corrosion products can easily fall off. The sacrificial anode has higher actual capacitance and current efficiency in the environment of low temperature and low dissolved oxygen, has the working potential of -1.12 to -1.05V, the current efficiency of more than or equal to 93% and the capacitance of more than or equal to 2600, and is even in corrosion. Furthermore, the sacrificial anode for the deep sea environment is low in indium content, effectively reduces the anode cost, and is especially suitable for cathode protection of ocean structure in the deep sea environment, thus the sacrificial anode has high performance.

Description

technical field [0001] The invention relates to a sacrificial anode material, in particular to a sacrificial anode for deep sea environment and a manufacturing method thereof. Background technique [0002] Metal corrosion is one of the main forms of damage to metal equipment and components. The sacrificial anode cathodic protection method is one of the most widely used anti-corrosion methods at present. It can provide anti-corrosion protection for metal components working in aqueous solution or in an environment containing aqueous solution. The method is to connect the metal to be protected (cathode) with a metal (anode) that is more negative than his potential, and the two metals are in the same electrolyte (such as water, soil), with the help of sacrificial anode and the metal to be protected. The large potential difference and the current generated by the continuous active dissolution of the sacrificial anode will cathodically polarize the protected metal, thereby inhibit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C23F13/14
Inventor 刘连君李振国马长江
Owner 李振国
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