Aluminum alloy sacrificial anode suitable for sea mud in Bohai Sea Gulf

A sacrificial anode and aluminum alloy technology, applied in the field of metal anti-corrosion, can solve the problem of less research on sacrificial anode materials, and achieve the effect of prolonging the life of the anode, good protection effect, and saving anode materials.

Active Publication Date: 2011-11-09
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are only some studies on sea mud in the South China Sea, and the

Method used

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  • Aluminum alloy sacrificial anode suitable for sea mud in Bohai Sea Gulf
  • Aluminum alloy sacrificial anode suitable for sea mud in Bohai Sea Gulf
  • Aluminum alloy sacrificial anode suitable for sea mud in Bohai Sea Gulf

Examples

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Effect test

Embodiment 1

[0017] A method for manufacturing an aluminum alloy sacrificial anode suitable for Bohai Bay sea mud. Weigh 2.5% zinc; 0.01% indium; 0.08% tin; 4% magnesium; 0.12% lanthanum; 0.12% actinium; 0.03% cerium; 0.04% silicon, 93.1% aluminum.

[0018] Wrap indium, tin, magnesium, lanthanum, actinium, and cerium with aluminum foil, put them into the molten aluminum, and then put zinc into the molten aluminum. After the alloy is completely melted, check that the impurity silicon content is 0.04%; The molten alloy is poured into a mold and cast into an aluminum alloy sacrificial anode body. The weight of the aluminum foil is included in the component aluminum.

[0019] refer to figure 1 . The aluminum alloy sacrificial anode body includes a sacrificial anode 1 and a connecting plate 2. The sacrificial anode 1 is a semi-circular cylinder, that is, the cross section of the sacrificial anode 1 is a semi-circular ring, and two semi-circular sacrificial anodes 1 are opposite to form a hol...

Embodiment 2

[0024] A method for manufacturing an aluminum alloy sacrificial anode suitable for Bohai Bay sea mud. Weigh 4% zinc; 0.05% indium; 0.05% tin; 6% magnesium; 0.2% lanthanum; 0.2% actinium; 0.03% cerium, 89.44% aluminum; 0.03% silicon. Lanthanum, actinium and cerium are products of Baotou Iron and Steel (Group) Co., Ltd.

[0025] Alloy indium, tin, magnesium, lanthanum, actinium, and cerium, press the alloy into the molten aluminum, and then put zinc into the aluminum melt. After the alloy is completely melted, check that the silicon is 0.03%; The molten alloy is poured into a mold and cast into an aluminum alloy sacrificial anode body.

[0026] The aluminum alloy sacrificial anode body includes a sacrificial anode 1 and a connecting plate 2. The sacrificial anode 1 is a semi-circular cylinder, that is, the cross section of the sacrificial anode 1 is a semi-circular ring, and two semi-circular sacrificial anodes 1 are opposite to form a hollow cylinder. The inner diameter of th...

Embodiment 3

[0031] A method for manufacturing an aluminum alloy sacrificial anode material suitable for Bohai Bay sea mud. Weigh 5% zinc; 0.03% indium; 0.02% tin; 8% magnesium; 0.29% lanthanum; 0.30% actinium; 0.04% cerium, 86.27% aluminum; silicon content 0.05% . Lanthanum, actinium and cerium are products of Baotou Iron and Steel (Group) Co., Ltd.

[0032] Alloy indium, tin, magnesium, lanthanum, actinium, and cerium, press the alloy into the molten aluminum, and then put zinc into the aluminum melt. After the alloy is completely melted, check that the silicon is 0.05%; The molten alloy is poured into a mold and cast into an aluminum alloy sacrificial anode body. The weight of the aluminum foil is included in the component aluminum.

[0033]The aluminum alloy sacrificial anode body includes a sacrificial anode 1 and a connecting plate 2. The sacrificial anode 1 is a semi-circular cylinder, that is, the cross section of the sacrificial anode 1 is a semi-circular ring, and two semi-cir...

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Abstract

The invention relates to an aluminum alloy sacrificial anode suitable for sea mud in the Bohai Sea Gulf. The aluminum alloy sacrificial anode is compounded from nine elements and comprises the following components in percentage by weight: 2.0-5.5 percent of Zinc, 0.01-0.05 percent of indium, 0.01-0.08 percent of tin, 4-8 percent of magnesium, 0.12-0.32 percent of lanthanum, 0.12-0.32 percent of actinium, 0.03-0.04 percent of cerium, less than or equal to 0.05 percent of silicon serving as an impurity element and the balance of aluminum. Most of added lanthanum, actinium and cerium elements exist in a phase segregation state, are mainly centralized on grain boundaries, are also distributed in crystals, are used for forming binary or polynary compounds such as aluminum-rich rare-earth phases such as LaAl4, CeAl4 and the like, and are used for forming intermetallic compounds with aluminum. The aluminum alloy sacrificial anode is suitable for sacrificial anode protection of the sea mud environment of the Bohai Sea Gulf, and has high adaptability to sea mud with high porosity ratio, large temperature range change and high corrosion, the characteristics of high current efficiency and long service life and the advantages of good protecting effect, long service life, saving in anode materials and the like.

Description

technical field [0001] The invention relates to the technical field of metal anticorrosion, in particular to an aluminum alloy sacrificial anode material, which is suitable for metal sacrificial anode protection in the sea mud environment of Bohai Bay. technical background [0002] Most of the sacrificial anodes used in sea mud are anode series with good performance in seawater. However, due to the dense sea mud, the activation of the sacrificial anode is affected. In addition, the corrosion products of the sacrificial anode adhere to the surface of the anode and are not easy to fall off, which will also lead to a decrease in the efficiency of the anode. Moreover, the composition and characteristics of sea mud in different sea areas are quite different. A sacrificial anode with better performance in sea mud in one sea area may not necessarily have good electrochemical performance in sea mud in another sea area. At present, there are only some studies on sea mud in the South...

Claims

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Application Information

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IPC IPC(8): C23F13/14C22C21/10C22C21/08
Inventor 张盈盈韩文礼周冰林竹解蓓蓓范云鹏王志涛
Owner BC P INC CHINA NAT PETROLEUM CORP
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