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Anticorrosive magnesium-aluminium composite material and its preparing method

A composite material and corrosion-resistant technology, which is applied in the direction of chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of expensive treatment process, unfound process, backward process, etc., and achieve low price, excellent resistance The effect of corrosion and simple processing technology

Inactive Publication Date: 2005-12-21
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technology of this method is relatively backward
(3) Metal coating (A.Yfantis, I.Paloumpa, D.Schmeiber, D.Yfantis, [Surf.Coat.Technol.151-152(2002) 400]), using fluoride as activator, after electroless nickel plating , passivation and heat treatment, the coating has good mechanical properties, corrosion resistance, weldability and stability to the environment, but the treatment process of this method is expensive
Although the above-mentioned surface modification technologies have improved the corrosion resistance of magnesium to varying degrees, a method that is simple in process, suitable for industrial mass production, and in compliance with environmental protection requirements has not yet been found.

Method used

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  • Anticorrosive magnesium-aluminium composite material and its preparing method
  • Anticorrosive magnesium-aluminium composite material and its preparing method
  • Anticorrosive magnesium-aluminium composite material and its preparing method

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Experimental program
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Effect test

Embodiment approach 1

[0014] Dimensions will be 10 x 10 x 2mm 3 aluminum sheet, 10×10×2mm 3 Grind the fresh surface of the magnesium sheet with sandpaper, spread 0.5g of zinc powder evenly in the middle, embed it with graphite powder, compact it at room temperature, and apply an external force exceeding the yield strength of aluminum and magnesium at the holding temperature at 300°C

[0015] (200MPa), keep it for 35 minutes, and after cooling, a corrosion-resistant magnesium-aluminum composite material bonded by zinc as the intermediate connection layer is obtained. Scanning electron microscopy (SEM) observed that figure 1 Transition layer shown.

Embodiment approach 2

[0017] Dimensions will be 10 x 10 x 0.1mm 3 aluminum sheet, 10×10×10mm 3 Grind the fresh surface of the magnesium block with sandpaper, spread 0.5 grams of tin powder evenly in the middle, embed it with graphite powder, compact it at room temperature, and apply an external force exceeding the yield strength of aluminum and magnesium at the holding temperature at 250 °C

[0018] (200MPa), keep it for 30 minutes, and after cooling, a corrosion-resistant magnesium-aluminum composite material bonded by tin as the intermediate connection layer is obtained.

Embodiment approach 3

[0020] Dimensions will be 10 x 10 x 2mm 3 aluminum sheet, 10×10×2mm 3 The AZ91 magnesium alloy sheet is ground with sandpaper to make a fresh surface, 0.5 grams of tin-aluminum composite powder with a mass percentage of Sn+3%Al is evenly spread in the middle, embedded with graphite powder, compacted at room temperature, and applied at 250 ° C over aluminum 1. Under the external force (200MPa) of the yield strength of magnesium at the holding temperature, keep it for 35 minutes. After cooling, the corrosion-resistant magnesium-aluminum composite material combined with tin and aluminum as the intermediate connection layer is obtained.

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Abstract

This is a cauterization-resistant Magnesium and Aluminum complex material and the preparation method. Concretely speaking, this is a method that appending some low melting point materials such as Zinc, Stannum into Magnesium , Aluminum, Mg-Al alloys, Magnesium alloys and Aluminum alloys, and the make low melting point materials and Magnesium or Aluminum functionary, at the 200~500 Deg.C, at a invariable air pressure of 0~50MPa or 0~200MPa in a condition that they are enwrapped and interred by some inert materials such as graphite, alumina or magnesia, and at a heat preservation of 20~50 minutes, forming a preparation of a complex material by the connective layer between Magnesium and Aluminum, Magnesium alloys and Aluminum, Magnesium and Aluminum alloys, or Magnesium alloys and Aluminum alloys. This complex material has excellent cauterization-resistant, shade- resistant, electromagnetism- resistant and modifiable capability. This technology is simple, the quality of the production is steady, it is easy to control, low cost, and it can suit to batch-production in industry.

Description

1. Technical field [0001] The corrosion-resistant magnesium-aluminum composite material and the preparation method of the present invention belong to the field of material processing engineering. , tin or zinc-tin-aluminum-magnesium are combined with each other and then pressed and kept warm to form a transition layer to realize the combination of magnesium and aluminum to form a preparation method for a corrosion-resistant magnesium-aluminum composite material. 2. Background technology [0002] Magnesium has the advantages of low density, high specific strength, excellent electromagnetic shielding performance, etc., especially after nearly ten years of research at home and abroad, the performance of magnesium has been greatly improved (S.Kamado, J.Koike, K.Kondoh , Y.Kawamura, [Mat.Sci.Forum 419-422(2003)21]), is expected to become an ideal structural material for aerospace and future automotive industries. But because the potential of magnesium is very negative, the oxide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01
Inventor 梁伟李线绒李秀杰赵兴国刘奋成薛晋波边丽萍
Owner TAIYUAN UNIV OF TECH
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