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Method for preparing discharge plasma of metal laminated composite material

A discharge plasma and composite material technology, applied in the field of plasma preparation, can solve the problems of poor interface size uniformity, low interface bonding strength, and high production cost, and achieve the effect of flat interface, low cleanliness requirements, and low cost

Inactive Publication Date: 2010-06-16
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing metal layered composite material discharge plasma using bulk metal as raw material, so as to solve the problem of complex process, long cycle, serious metal waste and uniform interface size of the current metal layered composite material production. Poor performance, low interfacial bonding strength, high production cost, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Prepare the QSn4-3 tin bronze and LY12 aluminum alloy block blanks to be composited, and use sandpaper and alcohol to treat the composite surface of the QSn4-3 tin bronze and LY12 aluminum alloy block blanks respectively. The QSn4-3 tin bronze and LY12 aluminum alloy block blanks are stacked together and placed directly into the graphite mold, and then the mold is placed in the spark plasma sintering device, and the system is evacuated to 2Pa at a rate of 30℃ / min. The temperature is raised to 480°C, an axial pressure of 30 MPa is applied, and the temperature is kept for 5 minutes for discharge plasma composite forming. After the furnace is cooled to room temperature, a high-quality, high-performance QSn4-3 tin bronze / LY12 aluminum alloy layered composite material can be obtained.

Embodiment 2

[0024] Prepare the QSn4-3 tin bronze and LY12 aluminum alloy block blanks to be composited, and use alcohol and acetone to treat the composite surface of the QSn4-3 tin bronze and LY12 aluminum alloy block blanks respectively. The QSn4-3 tin bronze and LY12 aluminum alloy block blanks are stacked together and placed directly into the graphite mold, and then the mold is placed in the spark plasma sintering device, the system is evacuated to 5Pa, and the rate is 70℃ / min. The temperature is raised to 490°C, an axial pressure of 20MPa is applied, and the temperature is kept for 10 minutes to perform discharge plasma composite forming. After the furnace is cooled to room temperature, a high-quality, high-performance QSn4-3 tin bronze / LY12 aluminum alloy layered composite material can be obtained.

Embodiment 3

[0026] Prepare the QSn4-3 tin bronze and LY12 aluminum alloy block blanks to be composited, and use sandpaper to treat the composite surface of the QSn4-3 tin bronze and LY12 aluminum alloy block blanks. The QSn4-3 tin bronze and LY12 aluminum alloy block blanks are stacked together and placed directly into the graphite mold, and then the mold is placed in the spark plasma sintering device, the system is evacuated to 7Pa, and the rate is 250℃ / min. The temperature is raised to 500°C, an axial pressure of 10 MPa is applied, and the temperature is kept for 1 min for discharge plasma composite forming. After the furnace is cooled to room temperature, a high-quality, high-performance QSn4-3 tin bronze / LY12 aluminum alloy layered composite material can be obtained.

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Abstract

The invention provides a method preparing discharge plasma of a metal laminated composite material and belongs to the technical field of the preparation of metal laminated composite materials. In the method, two or more types of bulk metals, of which the surfaces are simply treated, are used as raw materials to be combined, under conditions of vacuum or inert atmosphere and reasonably matched discharge plasma preparation process parameters and under an action of inverted high-speed flow of discharge shock waves generated by impulsive discharge, electrons and ions in electric fields, the surfaces to be combined of the bulk metals are punctured to a certain degree to make the surfaces to be combined quickly purified and activated and the metallurgical combination performed between the interfaces to be combined of the laminated bulk metals to make the bulk metals quickly combined and formed at a smaller pressure and at the low temperature, so that the metal laminated composite material with flat and straight interface, high combined strength and accurately controlled shape and size of products can be directly obtained. The method has the advantages of low requirement on the surface cleanliness of the metals to be combined, energy conservation and environmental protection, easy operation, strong repeatability, short flow and cycle and low cost.

Description

Technical field [0001] The invention relates to the technical field of preparation of metal layered composite materials, and in particular provides a method for preparing metal layered composite materials by discharge plasma. Background technique [0002] The metal layered composite material fully combines the respective advantages of two or more metals, has excellent physical properties, chemical properties and comprehensive mechanical properties, and has a wide range of applications in the national economy and national defense and military industries. The preparation methods of metal layered composite materials that have been publicly reported using bulk metals as raw materials include rolling + diffusion annealing, electroplating + annealing + rolling, explosive composite + heat treatment + rolling, seam welding composite + rolling + annealing Several other [Liu Xiaotao, et al. Laminated metal composite material production technology and its new progress. Materials Review, 200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P17/04
Inventor 刘雪峰胡文峰高小丽谢建新
Owner UNIV OF SCI & TECH BEIJING
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