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Aluminum alloy anode in high-temperature water environment and preparing method thereof

A technology of aluminum alloy and high-temperature water, which is applied in the field of aluminum alloy anode and its preparation, can solve the problems of affecting the protection effect, producing corrosion products, and decreasing the electrochemical performance of the anode material, achieving good effect, easy falling off, and improving the driving voltage of the protection Effect

Inactive Publication Date: 2020-08-07
太仓市凯德防腐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve a series of deficiencies in the existing anode materials in fresh water, seawater, salt water and other application environments, for example, the electrochemical performance of the anode material will be significantly reduced, and corrosion products will be produced, which will affect its protective effect and require manual work. Regular cleaning; therefore, we have designed an aluminum alloy anode in a high-temperature water environment and its preparation method, so that the anode material can be effectively used in fresh water, sea water, salt water and other application environments, and it is convenient for people to use

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  • Aluminum alloy anode in high-temperature water environment and preparing method thereof
  • Aluminum alloy anode in high-temperature water environment and preparing method thereof

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Embodiment 1

[0018] An aluminum alloy anode in a high-temperature water environment is a mixture made of the following raw materials and the following weight percentages: 4.0% zinc; 0.01% tin; 0.02% silicon; impurity content: iron≤0.2%, cadmium≤0.003 %, the balance is aluminum.

[0019] Preparation method: (1) take aluminum ingot as the raw material of aluminum element, heat the crucible to 750-800°C, and melt the aluminum ingot;

[0020] (2) Weigh the raw materials of zinc, tin and silicon elements respectively, add them to the molten aluminum liquid obtained in step (1), stir evenly with a graphite rod, remove slag, cast into a mold, cool, and take out to obtain an aluminum alloy anode.

Embodiment 2

[0022] An aluminum alloy anode in a high-temperature water environment is a mixture made of the following raw materials and the following weight percentages: 4.5% zinc; 0.01% tin; 0.04% silicon; impurity content: iron≤0.2%, cadmium≤0.003 %, the balance is aluminum.

[0023] Preparation method: (1) take aluminum ingot as the raw material of aluminum element, heat the crucible to 750-800°C, and melt the aluminum ingot;

[0024] Weigh the raw materials of zinc, tin and silicon elements respectively, add them to the molten aluminum liquid obtained in step (1), stir evenly with a graphite rod, remove slag, cast into a mold, cool, and take out to obtain an aluminum alloy anode.

[0025] Example 2 The electrochemical performance was tested according to the standard test method specified in GB / T 17848-1999. The electrochemical performance of the aluminum anode in seawater at three temperatures is shown in Table 1.

[0026] Table 1 Example 2 Aluminum alloy sacrificial anode electroche...

Embodiment 3

[0029] An aluminum alloy anode in a high-temperature water environment is a mixture made of the following raw materials and the following weight percentages: zinc 5.5%; tin 0.02%; silicon 0.015%; impurity content: iron≤0.2%, cadmium≤0.003 %, the balance is aluminum.

[0030] Preparation method: (1) take aluminum ingot as the raw material of aluminum element, heat the crucible to 750-800°C, and melt the aluminum ingot;

[0031] Weigh the raw materials of zinc, tin and silicon elements respectively, add them to the molten aluminum liquid obtained in step (1), stir evenly with a graphite rod, remove slag, cast into a mold, cool, and take out to obtain an aluminum alloy anode.

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Abstract

The invention discloses an aluminum alloy anode in high-temperature water environment. The anode is a mixture composed of raw materials including, by weight percent, 4.0 to 5.5% of zinc, 0.01 to 0.02%of tin, 0.01 to 0.45% of silicon, and the balance aluminum. The aluminum alloy anode has the beneficial effects that the aluminum alloy anode can be used in sea water, saline water and fresh water, the effect is good, cathode protection drive voltage of an existing aluminum anode can be greatly improved, and the problems that at the present stage, the sacrificial anode current efficiency is low,the service life is short, and toxic heavy metal and polluted water quality are dissolved in sacrificial anodes can be solved.

Description

technical field [0001] The invention relates to the technical field of metallurgy and material processing, in particular to an aluminum alloy anode in a high-temperature water environment and a preparation method thereof. Background technique [0002] At present, aluminum anodes are mainly used in seawater or salt water, but as the resistivity of water increases in seawater or salt water, the working potential of the aluminum anode will gradually become positive, so that its driving voltage will gradually become insufficient, which will limit the use of aluminum anodes in Practical applications in high-resistivity media, such as low-salinity water and fresh water; in addition, if the temperature of the water medium increases, the working potential of the aluminum anode will shift positively to varying degrees with the increase of temperature, which is due to the fact that the aluminum anode is in the Obvious anodic polarization occurs in hot water, which leads to an increase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/12C22C21/10C22C1/02
CPCC23F13/12C22C21/10C22C1/026
Inventor 贾世磊
Owner 太仓市凯德防腐科技有限公司