A method for preparing layered composite materials by spark plasma sintering

A technology of layered composite materials and discharge plasma, which is applied in the field of preparing layered composite materials, can solve the problems of low bonding strength of layered composite materials, and achieve the effects of shortening the holding time, high sintering temperature, and smooth composite interface

Active Publication Date: 2022-03-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of low bonding strength of layered composite materials prepared by the existing spark plasma sintering method, the present invention proposes a method for preparing layered composite materials by spark plasma sintering

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  • A method for preparing layered composite materials by spark plasma sintering
  • A method for preparing layered composite materials by spark plasma sintering

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specific Embodiment approach 1

[0020] Embodiment 1: In this embodiment, the method for preparing a layered composite material by spark plasma sintering is carried out according to the following steps:

[0021] First, roughen the surface of the metal sheet until the roughness is greater than Ra12.5 and clean it with alcohol, then stack the multi-layer metal sheets, and spread a layer of metal powder between adjacent metal sheets to form a sheet-powder stack Layer component, place the plate-powder laminated component in the graphite mold, apply pressure to the plate-powder laminated component in the graphite mold, and carry out spark plasma sintering, which is completed;

[0022] The melting point of the metal powder is 0.5 to 0.9 times the lower melting point of the metal sheets on both sides; the materials of the metal powders in different layers in the sheet-powder laminated component are one or more; the The metal sheets of different layers in the sheet-powder laminated component are made of one or more m...

specific Embodiment approach 2

[0029] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the material of the metal plate is pure metal or metal alloy; the pure metal is Fe, Ni, Ti, Cu, Zn, Al, Mg or W ; The metal alloy is an alloy whose main component is Fe, Ni, Ti, Cu, Zn, Al, Mg or W. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0030] Embodiment 3: This embodiment is different from Embodiment 1 in that: the thickness of the metal plate is 0.05-10 mm. Other steps and parameters are the same as those in the first embodiment.

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Abstract

The invention discloses a method for preparing a layered composite material by spark plasma sintering, relating to a method for preparing a layered composite material. The purpose is to solve the problem of low bonding strength of layered composite materials prepared by the existing spark plasma sintering method. Method: Roughen the surface of the metal plate material, then stack the multi-layer metal plates, spread a layer of metal powder between the adjacent metal plates, and carry out discharge plasma sintering. The invention adopts the metal powder lower than the melting point of the metal plate as a "binder" to form a strong metallurgical bond with the metal plates on both sides, so as to realize the low temperature preparation of a metal layered composite material with high interfacial bonding. The invention is suitable for preparing layered composite materials.

Description

technical field [0001] The invention relates to a method for preparing a layered composite material. Background technique [0002] With the development of science and technology, fields such as aerospace, railway transportation, construction and nuclear power have put forward more comprehensive requirements for the development of materials, such as high strength, corrosion resistance, lightweight and vibration absorption. A single metal material is limited by natural resources or insufficient comprehensive performance, and its application field is greatly restricted. Through structural design, a composite material composed of two or more pure metals and alloys can be prepared, which can have the advantages of pure metals and alloys, and has wider applications. Layered composite materials are common composite materials of pure metals and alloys. Common layered composite materials include lightweight and corrosion-resistant aluminum-magnesium layered composite materials, ligh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04B22F3/105
CPCB22F7/04B22F3/105B22F2003/1051
Inventor 武高辉刘凯芶华松杨文澍
Owner HARBIN INST OF TECH
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