Tungsten-copper composite material and preparation method thereof

A composite material, tungsten copper technology, applied in the direction of chemical instruments and methods, layered products, metal layered products, etc., can solve the problems of low yield, easy delamination, low bonding strength of material interface, etc., and achieve high yield , good uniformity, uniform thickness of copper layer

Active Publication Date: 2016-07-27
GRIMAT ENG INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, most of the methods for preparing laminated composite metal sheets adopt the method of rolling cladding, which is to use metal plates such as binary metals or unit metals as the core material to composite metals such as copper on both sides of the core material by rolling cladding. It is a composite method in which each component layer is combined with a large reduction, so there are disadvantages such as low material interface bonding strength, easy delamination, and low yield.

Method used

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  • Tungsten-copper composite material and preparation method thereof
  • Tungsten-copper composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] Firstly, two tungsten plates with a porosity of 25%, external dimensions of 60×200mm, and a thickness of 2.4mm are selected as the substrate, and copper rods of Φ3×200mm are respectively placed on the upper and lower sides of the tungsten plate and fastened with Φ1mm copper wires, and then put into the In the furnace, keep the temperature at 1250°C under a hydrogen atmosphere for 1.5 hours; secondly, polish and polish the two tungsten plates impregnated with copper, then immerse them in 40% (volume ratio) hydrochloric acid for 30 seconds, take them out, rinse them with clean water, and dry them , use the method of ion copper plating to plate a layer of copper with a thickness of 0.1 μm; then use a pulse power supply to simultaneously perform electrodeposited copper on two tungsten copper plates at different positions in a rotating device with a depth of 350mm (the distance from the liquid surface to the bottom). That is, it is carried out in an acidic copper sulfate solu...

Embodiment 2

[0031] Firstly, two tungsten plates with a porosity of 10%, an external dimension of 60×200mm, and a thickness of 4.8mm are selected as the substrate, and copper foils with the same external dimensions as the tungsten plate and a thickness of 0.2mm are respectively placed on the upper and lower sides of the tungsten plate. After fastening the Φ1mm copper wire, put it into the furnace, and keep the temperature at 1150°C for 0.5h in a hydrogen atmosphere; secondly, polish and polish the two tungsten plates impregnated with copper, and then immerse them in 20% (volume ratio) hydrochloric acid for 60 seconds , take it out, rinse it with clean water, dry it, and use the method of ion copper plating to plate a layer of copper with a thickness of 3 μm; Electrodeposition copper cladding on tungsten copper plate is carried out in self-circulation of acidic copper sulfate solution at room temperature, CuSO 4 ·H 2 O: 190g / L, H 2 SO 4 : 52g / L, the speed of rotation and revolution is 20...

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Abstract

The invention discloses a tungsten-copper composite material and a preparation method thereof and belongs to the technical field of composite materials. According to the invention, the method comprises the following steps: firstly, enabling copper to infiltrate to the surface layer or the interior of a base material by adopting a copper infiltration method by taking a tungsten plate with a porous structure as the base material; secondly, carrying out electrodeposition copper cladding on a tungsten copper plate or a tungsten copper-tungsten-tungsten copper plate by adopting a pulse power supply in a rotating device after surface treatment; and finally, carrying out rolling leveling and annealing treatment to obtain the tungsten-copper composite material. The tungsten-copper composite material is a laminated composite metal sheet. According to the invention, electrodeposition copper cladding is carried out on the tungsten copper plate or the tungsten copper-tungsten-tungsten copper plate by adopting the pulse power supply in the rotating device, the clad copper layer is good in uniformity, intra-plate deviation is within 10%; metallic copper is good in combination effect with the base material, the copper layer is controllable in thickness, and the yield is high; and the tungsten-copper composite material prepared according to the invention can be widely applied to the fields of electronics, electric equipment, aerospace, machinery and the like.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a tungsten-copper composite material and a preparation method thereof. Background technique [0002] Since tungsten-copper composite materials have the respective characteristics and advantages of tungsten and copper, the excellent characteristics of high melting point tungsten and high thermal conductivity metal copper, that is, high high temperature strength, high electrical and thermal conductivity, good electrical corrosion resistance, high Its hardness, low thermal expansion coefficient and certain plasticity can adjust its corresponding mechanical and physical properties by changing the proportion of components. Therefore, this composite material can be widely used in electronics, electrical appliances, aerospace, machinery and other fields. [0003] At present, most of the methods for preparing laminated composite metal sheets adopt the method of ro...

Claims

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Application Information

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IPC IPC(8): B23P15/00B32B15/01B32B15/20C25D3/38C25D5/18
Inventor 惠志林周增林李艳林晨光
Owner GRIMAT ENG INST CO LTD
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