High temperature resistance aluminum alloy sacrificial anode material and preparation method and application thereof

A sacrificial anode and aluminum alloy technology, which is applied in the field of Ce and La rare earth aluminum alloy sacrificial anode materials, can solve the problems of uneven corrosion, low current efficiency, poor electrochemical performance, etc., and achieve excellent electrochemical performance and fluidity The effect of improving and uniform corrosion morphology

Active Publication Date: 2018-08-03
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention solves the problems of poor electrochemical performance, uneven corrosion and low current efficiency of the aluminum alloy sacrificial anode material in the prior art in a high-temperature corrosion environment

Method used

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  • High temperature resistance aluminum alloy sacrificial anode material and preparation method and application thereof
  • High temperature resistance aluminum alloy sacrificial anode material and preparation method and application thereof
  • High temperature resistance aluminum alloy sacrificial anode material and preparation method and application thereof

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Experimental program
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Embodiment 1

[0026] The Ce, La aluminum alloy sacrificial anode material of this embodiment is composed of the following components in mass percentage: Zn 4.71%, In 0.05%, Mg 2.31%, Si 0.10%, Ce 0.08%, La 0.03%, the balance For Al and unavoidable impurities.

[0027] The preparation method of the Ce, La aluminum alloy sacrificial anode material of this embodiment is to take alloy raw materials pure zinc (Zn), pure indium (In), pure magnesium (Mg), pure aluminum (Al ), aluminum-cerium master alloy (Al-Ce), aluminum-lanthanum master alloy (Al-La) and aluminum-silicon master alloy (Al-Si), take 471 parts of pure zinc (Zn), take 5 parts of pure indium (In), Take 231 parts of pure magnesium (Mg), 67 parts of aluminum-cerium master alloy (Al-Ce), 25 parts of aluminum-lanthanum master alloy (Al-La), 50 parts of aluminum-silicon master alloy (Al-Si), and 9151 parts of aluminum (Al) were smelted in a graphite crucible and an induction furnace to obtain a molten liquid; under the protection of argo...

Embodiment 2

[0029] The Ce, La aluminum alloy sacrificial anode material of this embodiment is composed of the following components in mass percentage: Zn 4.57%, In 0.05%, Mg 2.29%, Si 0.10%, Ce 0.16%, La 0.06%, the balance For Al and unavoidable impurities.

[0030]The preparation method of the Ce, La aluminum alloy sacrificial anode material of this embodiment is to take alloy raw materials pure zinc (Zn), pure indium (In), pure magnesium (Mg), pure aluminum (Al ), aluminum-cerium master alloy (Al-Ce), aluminum-lanthanum master alloy (Al-La) and aluminum-silicon master alloy (Al-Si), take 457 parts of pure zinc (Zn), take 5 parts of pure indium (In), Take 229 parts of pure magnesium (Mg), take 133 parts of aluminum-cerium master alloy (Al-Ce), get 50 parts of aluminum-lanthanum master alloy (Al-La), get 50 parts of aluminum-silicon master alloy (Al-Si), and take pure 9076 parts of aluminum (Al) were smelted in a graphite crucible and an induction furnace to obtain a melt; under the prot...

Embodiment 3

[0032] The aluminum alloy sacrificial anode material containing Ce and La in this embodiment is composed of the following components in mass percentage: Zn4.26%, In0.05%, Mg2.19%, Si0.17%, Ce0.45%, La0.45%, and the rest The amount is Al and unavoidable impurities.

[0033] The preparation method of the Ce, La aluminum alloy sacrificial anode material of this embodiment is to take alloy raw materials pure zinc (Zn), pure indium (In), pure magnesium (Mg), pure aluminum (Al ), aluminum-cerium master alloy (Al-Ce), aluminum-lanthanum master alloy (Al-La) and aluminum-silicon master alloy (Al-Si), take 426 parts of pure zinc (Zn), take 5 parts of pure indium (In), Take 219 parts of pure magnesium (Mg), take 375 parts of aluminum-cerium master alloy (Al-Ce), get 375 parts of aluminum-lanthanum master alloy (Al-La), get 85 parts of aluminum-silicon master alloy (Al-Si), and take pure 8515 parts of aluminum (Al) were smelted in a graphite crucible and an induction furnace to obtain a...

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Abstract

The invention provides a high temperature resistance aluminum alloy sacrificial anode material, and a preparation method and application thereof. The high temperature resistance aluminum alloy sacrificial anode material comprises aluminum, zinc, indium, magnesium and silicon as well as rare-earth cerium metal and lanthanum metal, wherein the mass percentage of the zinc is 2%-5%; the mass percentage of the indium is 0.01%-0.06%; the mass percentage of the magnesium is 0.5%-3%; the mass percentage of the silicon is 0.05%-0.5%; the mass percentage of the cerium is 0.01%-0.6%; and the mass percentage of the lanthanum is 0.01%-0.5%. The high temperature resistance aluminum alloy sacrificial anode material has the beneficial effects that the organization of the aluminum alloy sacrificial anode is improved by adding the rare-earth cerium metal and lanthanum metal, and the crystalline grains of the aluminum alloy sacrificial anode are refined, so that the anode material is uniformly dissolvedat a high temperature; and the anode material is low in depletion rate and long in service life, is particularly suitable for cathode protection at a high temperature corrosion environment and has wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy sacrificial anode materials, and in particular relates to an aluminum alloy sacrificial anode material containing Ce and La rare earths. Background technique [0002] Metal materials play an extremely important role in modern industrial and agricultural production, and their corrosion has brought huge economic losses to human beings. The corrosion of metals in natural environmental media such as fresh water, sea water, and soil, and chemical media such as acids, alkalis, and salts belongs to the scope of electrochemical corrosion. Therefore, electrochemical protection, especially cathodic protection, can be used to prolong the service life of metal facilities. life. [0003] There are two cathodic protection methods in metal corrosion protection, one is the impressed current method, and the other is the sacrificial anode method. According to the different sources of current, there are two...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/03C23F13/14
CPCC22C1/026C22C1/03C22C21/10C23F13/14
Inventor 邱于兵刘婷
Owner HUAZHONG UNIV OF SCI & TECH
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