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Zinc/aluminum/magnesium three-element co-permeation layer and preparation method thereof

A zinc-aluminum-magnesium ternary and aluminum-magnesium ternary technology is applied in the field of zinc-aluminum-magnesium ternary permeation layer and preparation. Excellent morphology, high bonding strength and low cost

Active Publication Date: 2015-05-20
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiencies and problems of hot-dip galvanized aluminum-magnesium in the prior art, such as high process requirements, uneven coating surface, and inability to form a high-performance infiltrated layer, the invention provides a high-content aluminum and magnesium coating suitable for metal materials. Zinc-aluminum-magnesium ternary co-infiltration layer and its preparation method, which are high in thickness, excellent in appearance and high in bonding strength, suitable for industrial promotion and production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 A method for preparing a zinc-aluminum-magnesium ternary co-infiltration layer, comprising the steps of:

[0023] 1) Decontaminate the dirt on the surface of the metal to be tested, wash the metal to be tested with NaOH solution and water at 95 ° C for 3 times, and remove the grease on the surface of the metal to be tested;

[0024] 2) The metal to be tested after the treatment in step 1) is subjected to shot blasting derusting treatment, and the derusting level is not lower than Sa2 1 / 2 class;

[0025] 3) The ternary co-penetration agent (the parts by weight of each component in the ternary co-penetration agent is: Al 42%, Mg 10%, Zn 48%; the particle diameter of each component is less than 70 μm), catalyst Penetrating agent (the weight percent of each component of described penetrating agent is as follows: ZnCl 2 40%; NaF 6%; CeCl 2 2%; SnCl 2 6%; H 2 o 2 1.5%; surfactant 0.35%, the balance is water) and the metal to be measured after the treatment ...

Embodiment 2

[0026] Embodiment 2: a kind of preparation method of zinc-aluminum-magnesium ternary permeation layer, comprises the following steps:

[0027] 1) Decontaminate the dirt on the surface of the metal to be tested, wash the metal to be tested with NaOH solution and water at 100 ° C for 3 times, and remove the grease on the surface of the metal to be tested;

[0028] 2) The metal to be tested after the treatment in step 1) is subjected to shot blasting derusting treatment, and the derusting level is not lower than Sa2 1 / 2 class;

[0029] 3) The ternary co-penetration agent (the parts by weight of each component in the ternary co-penetration agent is: Al 35%, Mg 12%, Zn53%; the particle diameter of each component is less than 70 μm), catalyst Penetration agent (the weight percent of each component in the described penetrating agent is as follows: ZnCl 2 35%; NaF 2%; CeCl 2 0.5%; SnCl 2 4.5%;H 2 o 2 0.5%; Surfactant 0.1%, the balance is water) and the metal to be tested after t...

Embodiment 3

[0030] Embodiment 3: a kind of preparation method of zinc-aluminum-magnesium ternary permeation layer, comprises the following steps:

[0031] 1) Decontaminate the dirt on the surface of the metal to be tested, wash the metal to be tested with NaOH solution and water at 100 ° C for 3 times, and remove the grease on the surface of the metal to be tested;

[0032] 2) The metal to be tested after the treatment in step 1) is subjected to shot blasting derusting treatment, and the derusting level is not lower than Sa2 1 / 2 class;

[0033] 3) The ternary co-penetration agent (the parts by weight of each component in the ternary co-penetration agent is: Al 48%, Mg 12%, Zn 40%; the particle diameter of each component is less than 70 μm), catalyst Penetration agent (the weight percent of each component in the described penetrating agent is as follows: ZnCl 2 45%; NaF 10%; CeCl 2 3.5%; SnCl 2 8.5%; H 2 o 2 2%; surfactant 0.5%, the balance is water) and step 2) the metal to be teste...

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Abstract

The invention belongs to the technical field of metal material surfaces, and particularly relates to a zinc / aluminum / magnesium three-element co-permeation layer and a preparation method thereof. On the basis of the hot dipping technology of zinc-magnesium-aluminium alloy, aluminum and magnesium alloys are proportioned and matched with a self-made energizing agent to prepare the zinc / aluminum / magnesium three-element co-permeation layer on the metal material surface at certain temperature by a certain treatment technique. On the basis of the zinc / aluminum / magnesium co-permeation technique, the zinc / aluminum / magnesium three-element co-permeation layer with high aluminum content and high magnesium content is formed; the zinc / aluminum / magnesium three-element co-permeation has the advantages of high thickness, favorable permeation layer shape and high bonding strength; and the invention implements preparation of the zinc / aluminum / magnesium co-permeation layer on the metal material surface. The preparation method is low in cost, and can easily implement industrial production.

Description

Technical field: [0001] The invention belongs to the field of chemical heat treatment on the surface of metal materials, and in particular relates to a zinc-aluminum-magnesium ternary co-infiltration layer and a preparation method thereof. Background technique: [0002] Galvanizing, aluminizing or zinc-aluminum alloy on the metal surface is an important surface chemical heat treatment technology for metal materials. Alloy infiltration has better corrosion resistance than zinc and aluminizing in many environments. At present, effective methods to obtain alloy infiltration include liquid infiltration and powder infiltration, but both have the disadvantages of long process time and difficult industrial production. Aluminizing, zincizing, and zinc-aluminum alloying all require high processing temperature, which leads to a decrease in the strength of the metal material, and a long process time causes a huge waste of time and energy. The mutual reaction between multiple metals an...

Claims

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Application Information

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IPC IPC(8): C23C10/52
CPCC23C10/52
Inventor 郭凯李辛庚岳增武王晓明闫风洁曹建梅王学刚樊志彬张都清邓化凌
Owner STATE GRID CORP OF CHINA