Preparation method of CuW/CuCr composite material

A technology of composite materials and monolithic materials, which is applied in the field of preparation of CuW/CuCr composite materials, can solve the problems of broken CuW ends, shedding, and low bonding strength of CuW/CuCr heterogeneous material interfaces, achieving enhanced bonding force, low cost, The effect of improving the bonding strength

Inactive Publication Date: 2015-04-08
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of CuW / CuCr composite material, which solves the problem that the interface bonding strength of CuW / CuCr heterogeneous material prepared by the existing method is low, and the whole material is easy to fracture along the bonding surface, causing the CuW end to fall off.

Method used

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  • Preparation method of CuW/CuCr composite material
  • Preparation method of CuW/CuCr composite material
  • Preparation method of CuW/CuCr composite material

Examples

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preparation example Construction

[0036] A kind of preparation method of CuW / CuCr composite material of the present invention, as figure 1 As shown, it specifically includes the following steps:

[0037] Step 1, preparation of CuFe supersaturated solid solution alloy ribbon

[0038] From the purchased pure Cu rod (content 99.99%), cut off small pieces of required quality, clean and remove surface impurities with surfactant, then put the Cu piece in a beaker, inject alcohol into the beaker, when the Cu piece is completely immersed in alcohol , then put the beaker into an ultrasonic cleaner for cleaning for 3-5 minutes and then take it out to dry. Weigh the required amount of pure Fe powder (electrolytic iron powder with a purity of 99.7% and a particle size of 200 mesh), the amount of Fe powder is 2 to 15 wt% of the mass of the Cu block, and put the pure Cu block and Fe powder into the high-purity quartz The crucible was placed in a high-frequency induction furnace, and the inert gas Ar gas was used as the pr...

Embodiment 1

[0053] Step 1, preparation of CuFe supersaturated solid solution alloy ribbon

[0054] From the purchased pure Cu rod (content 99.99%), cut off small pieces of required quality, clean and remove surface impurities with surfactant, then put the Cu piece in a beaker, inject alcohol into the beaker, when the Cu piece is completely immersed in alcohol , then put the beaker into an ultrasonic cleaner for cleaning for 3 minutes and then take it out to dry. Take the pure Fe powder (purity is 99.7% electrolytic iron powder, particle size is 200 meshes) of required content, the amount of Fe powder is 2wt% of the mass of Cu block, pure Cu block and Fe powder are put into high-purity quartz crucible And placed in a high-frequency induction furnace, using the inert gas Ar gas as the protective atmosphere, after repeated smelting at 1200 ° C for 5 times, the CuFe supersaturated solid solution alloy thin strip was prepared by the rapid solidification single-roll stripping method, and its th...

Embodiment 2

[0068] Step 1, preparation of CuFe supersaturated solid solution alloy ribbon

[0069] From the purchased pure Cu rod (content 99.99%), cut off small pieces of required quality, clean and remove surface impurities with surfactant, then put the Cu piece in a beaker, inject alcohol into the beaker, when the Cu piece is completely immersed in alcohol , then put the beaker into an ultrasonic cleaner for cleaning for 4 minutes and then take it out to dry. Take the pure Fe powder (purity is 99.7% electrolytic iron powder, particle size is 200 meshes) of required content by weighing, and the Fe powder consumption is 4wt% of Cu block quality, puts pure Cu block and Fe powder into high-purity quartz crucible And placed in a high-frequency induction furnace, using the inert gas Ar gas as the protective atmosphere, after repeated smelting at 1300 ° C for 3 times, the CuFe supersaturated solid solution alloy thin strip was prepared by the rapid solidification single-roll stripping method,...

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Abstract

The invention discloses a preparation method of CuW/CuCr composite material. A CuFe supersaturated solid solution alloy thin strip is prepared firstly, then the CuFe supersaturated solid solution alloy thin strip is arranged between a CuW alloy and a CuCr alloy to be sintered and infiltrated, and finally solid solution and aging treatment is performed on the material after sintering and infiltration so that the CuW/CuCr composite material of which the bonding surface is metallurgically bonded is obtained. The invention provides the preparation method of the CuW/CuCr composite material. The Cu/W phase interface is enhanced via introducing the CuFe alloy thin strip so that metallurgical bonding between a framework W and matrix phase Cu is realized, bonding force between the framework and the matrix phase is enhanced, interface bonding strength of the CuW/CuCr material is enhanced, problems that interface bonding strength of the CuW/CuCr heterogeneous material prepared by the existing methods is low and the CuW end falls off due to the fact that the whole material is liable to break along the bonding surface can be solved, and thus the technology is simple and cost is low.

Description

technical field [0001] The invention belongs to the technical field of connection preparation of heterogeneous materials, and in particular relates to a preparation method of CuW / CuCr composite material. Background technique [0002] The self-supporting high-voltage integral electrical contact is connected by the CuW contact finger part that is resistant to arc burning and the CuCr part that provides elasticity. The CuW / CuCr integral composite material combines the performance advantages of these two heterogeneous materials and is widely used in high voltage. In the electrical contacts of the circuit breaker. With the development of high-voltage switches towards ultra-high voltage, large capacity, and miniaturization, the thermal and mechanical loads on the CuW / CuCr integral electrical contacts in the arc extinguishing chamber will become larger during use, and the service environment will be more severe , which puts forward higher requirements for the interface bonding str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H11/04B22D23/00C22F1/00
CPCC22F1/08H01H11/048
Inventor 杨晓红肖哲邹军涛肖鹏梁淑华
Owner XIAN UNIV OF TECH
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