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Preparation method of iron-based amorphous alloy-copper multilayer composite plate

An iron-based amorphous alloy and multi-layer composite technology, which is applied in the direction of metal layered products, chemical instruments and methods, lamination, etc., can solve the problem of insufficient welding preparation efficiency and feasibility of multi-layer composite materials, unable to meet welding requirements, High equipment requirements and other issues, to achieve the effect of increasing element diffusion distance, small rheological stress, and low viscosity

Active Publication Date: 2014-07-02
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Laser welding technology, electron beam welding technology, pulse current welding technology and other methods have high requirements on equipment and high cost, and cannot meet the welding requirements of large-sized welding planes. There are obvious gaps in the welding preparation efficiency and feasibility of multi-layer composite materials. insufficient

Method used

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  • Preparation method of iron-based amorphous alloy-copper multilayer composite plate
  • Preparation method of iron-based amorphous alloy-copper multilayer composite plate
  • Preparation method of iron-based amorphous alloy-copper multilayer composite plate

Examples

Experimental program
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Effect test

Embodiment 1

[0024] This embodiment is an iron-based amorphous foil (Fe 78 Si 9 B 13 ) and copper foil for the preparation of 40-layer composite panels. The dimensions of the iron-based amorphous foil and copper foil are both 100×100mm 2 , with a thickness of 30 μm.

[0025] Step 1, pretreatment: Use 20% hydrochloric acid alcohol solution cleaning and ultrasonic cleaning to remove the oxide layer on the surface of iron-based amorphous alloy foil and copper foil, then put them in absolute alcohol for cleaning, and dry them with cold air. Stack 20 layers of iron-based amorphous foils and 20 layers of copper foils in the order of ABAB···AB, and wrap them with 2 sheets of copper foil with a thickness of 50 μm in a 90° cross form.

[0026] Step 2, pre-diffusion connection: put the sample into the vacuum diffusion welding machine, and the vacuum degree is pumped to 5×10 -3 Pa~7×10 -3 Pa, the temperature of the vacuum diffusion welding machine is raised to 400-650°C by means of gradient hea...

Embodiment 2

[0033] This embodiment is an iron-based amorphous foil (Fe 78 Si 9 B 13 ) and copper foil 40 composite sheet preparation method. The size of the iron-based amorphous foil and copper foil is 100×100mm 2 , with a thickness of 30 μm.

[0034] Step 1, pretreatment: Use 20% hydrochloric acid alcohol solution cleaning and ultrasonic cleaning to remove the oxide layer on the surface of the iron-based amorphous alloy foil and copper foil, then put it in absolute alcohol for cleaning, and dry it with cold air. Stack 20 layers of iron-based amorphous alloy foils and 20 layers of copper foils in the order of ABAB · AB, and use two 50 μm thick copper foils as wrappers to wrap them in a 90° cross form.

[0035]Step 2, pre-diffusion connection: put the sample into the vacuum diffusion welding machine, and when the vacuum degree is pumped to 5×10-3Pa~7×10-3Pa, the temperature of the vacuum diffusion welding machine is raised to 400~650 ℃. Specifically: for the first time, the temperatu...

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Abstract

The invention discloses a preparation method of an iron-based amorphous alloy-copper multilayer composite plate. By combining a vacuum diffusion bonding technology and a hot rolling bonding technology, the multilayer composite plate is prepared; in processes of vacuum diffusion bonding and hot rolling bonding, processing temperatures are selected to be in an amorphous alloy super-cooled liquid region; by adopting the characteristics of low viscosity, small flow stress and element diffusion acceleration of the amorphous alloy in the super-cooled liquid region, the iron-based amorphous alloy and the copper can be effectively connected, thus the iron-based amorphous alloy-copper multilayer composite plate can be successfully prepared. In a hot rolling process, a thin-layer surface is stressed by shearing force, so that fresh metals in the thin-layer surface are exposed in a short time and contacted and bonded with each other in the presence of pressure, thus effective welding is formed at an interface; in a vacuum annealing process, the element diffusion distance in the interface can be further increased, so that the metallurgy bonding strength can be improved, and the rolling stress can be released.

Description

technical field [0001] The invention belongs to the technical field of connecting amorphous alloys and crystalline materials, and relates to a preparation process for a multilayer composite plate of iron-based amorphous alloy alloy and copper. Background technique [0002] Amorphous alloys are a new type of alloys that do not have the crystal structure of traditional metal materials, and the atoms are in a state of long-range disorder and short-range order. [0003] At present, there are many methods for connecting amorphous alloys and crystalline materials, mainly including laser welding technology, electron beam welding technology, pulse current welding technology, explosive welding technology, friction welding technology, etc. The process is greatly restricted, and it is impossible to complete the welding process of large area and multiple welding surfaces at one time. [0004] In the document "X.F.Li, K.F.Zhang, G.F.Wang.Preparation and Tensile Properties of Amorphous F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/10B32B15/01
Inventor 寇宏超唐斌王军牛春兴李金山孙智刚胡锐
Owner NORTHWESTERN POLYTECHNICAL UNIV
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