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TiB2-ZrB2 composite-phase ceramic reinforced copper-based composite material formed in in-situ synthesis mode according to multi-step method, and preparation method and application thereof

A technology of copper-based composite materials and multi-phase ceramics, which is applied in transportation and packaging, metal processing equipment, coatings, etc., can solve problems such as deformation and the inability of the reinforcing phase to continue to play a reinforcing role, and achieve the effect of improving wettability

Inactive Publication Date: 2018-06-01
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, TiC, TiB 2 and ZrB 2 Composite materials such as reinforcing phase coated on the surface of copper substrate, this type of material improves the wear resistance of electric welding electrode materials to a certain extent, but the spot welding electrode will produce certain deformation during use and needs to be ground, once the spot welding electrode Grinding, the reinforcement phase coated on the surface of the copper substrate is damaged and cannot continue to exert its original reinforcement effect

Method used

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  • TiB2-ZrB2 composite-phase ceramic reinforced copper-based composite material formed in in-situ synthesis mode according to multi-step method, and preparation method and application thereof
  • TiB2-ZrB2 composite-phase ceramic reinforced copper-based composite material formed in in-situ synthesis mode according to multi-step method, and preparation method and application thereof
  • TiB2-ZrB2 composite-phase ceramic reinforced copper-based composite material formed in in-situ synthesis mode according to multi-step method, and preparation method and application thereof

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preparation example Construction

[0041] The present invention also provides a multi-step in situ synthesis of TiB 2 -ZrB 2 The preparation method of multiphase ceramic reinforced copper matrix composite material, comprises the following steps:

[0042] 1) Ball mill titanium element, zirconium element and boron element to obtain TiB 2 -ZrB 2 Complex phase precursor;

[0043] 2) In the TiB 2 -ZrB 2 Electroless nickel plating is performed on the surface of the multiphase precursor to obtain nickel wetting enhancement particles;

[0044] 3) mixing and ball milling the nickel wetting enhancing particles and the copper source to obtain a ball mill mixture;

[0045] 4) cold pressing the ball-milled mixture to obtain a compact;

[0046] 5) Sintering the compact in an oxygen-free atmosphere to obtain a sintered body;

[0047] 6) Forging the sintered body to obtain multi-step in-situ synthesis of TiB 2 -ZrB 2 Composite ceramics reinforced copper matrix composites.

[0048] In the present invention, titanium ...

Embodiment 1

[0082] Weigh 10g of Ti, Zr, B powder (the molar ratio of Ti, Zr, and B powder is 1:1:4, the particle size is 200 mesh, and the purity is ≥99.99) for ball milling. The ball milling parameters are 350r / min, 12h, The ball-to-material ratio is 10:1, the material of the ball and the spherical tank is alumina, and the diameter of the ball is 5mm. The ball milling process is completed under the protection of argon gas, and the purity of the argon gas is greater than 99.9%. Put the ball-milled mixed powder into an electroless nickel plating solution with a pH of 9, stir the solution with a magnetic stirrer until no bubbles are generated at a temperature of 40°C, then filter and wash with deionized water until neutral, and place in the air Dry naturally for later use. Take 0.5g of the dried ball-milled powder, and mix it with 49.5g of pure copper powder with a particle size of 200 mesh at a ball-milling speed of 120r / min, a ball-milling time of 12h, a ball-to-material ratio of 2:1, and...

Embodiment 2

[0086] Weigh 10g of Ti, Zr, and B powder (the molar ratio of Ti, Zr, and B powder is 1:1:4, the particle size is 200 mesh, and the purity is ≥99.99) for ball milling. The ball milling parameters are 400r / min, 18h, The ball-to-material ratio is 20:1, the material of the ball and the spherical tank is alumina, and the diameter of the ball is 5mm. The ball milling process is completed under the protection of argon, and the purity of the argon is greater than 99.9%. Put the ball-milled mixed powder into an electroless nickel plating solution with a pH value of 9.5, and stir the solution with a magnetic stirrer at a temperature of 45°C until no bubbles are generated, then filter and wash with deionized water until neutral, and place in air Dry naturally in medium. Take 0.5g of dried ball-milled powder, and mix it with 49.5g of pure copper powder with a particle size of 200 mesh at a ball-milling speed of 150r / min, a ball-milling time of 8h, a ball-to-material ratio of 5:1, and full...

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Abstract

The invention provides a TiB2-ZrB2 composite-phase ceramic reinforced copper-based composite material formed in an in-situ synthesis mode according to a multi-step method, and a preparation method andapplication thereof. The composite material comprises a TiB2-ZrB2 composite-phase ceramic reinforcement phase formed in an in-situ synthesis mode, a copper matrix phase and a nickel wetting phase wrapping the surface of the TiB2-ZrB2 composite-phase ceramic reinforcement phase, and the TiB2-ZrB2 composite-phase ceramic reinforcement phase with the surface wrapped with the nickel wetting phase isscattered inside and on the surface of the copper matrix phase. The composite material provided by the invention has excellent conductivity and hardness performance, the reinforcement phase is distributed on the surface of or inside the matrix phase, and when the composite material is applied as a spot welding electrode, even polishing has almost no influence on the service life of the spot welding electrode.

Description

technical field [0001] The invention belongs to the technical field of metal matrix composite materials, in particular to a multi-step in-situ synthesis of TiB 2 -ZrB 2 Composite ceramic reinforced copper matrix composite material and its preparation method and application. Background technique [0002] Resistance spot welding is inseparable from the automobile production process. The production of passenger cars requires 3,000 welding points / car, and the production of cars requires 7,000-12,000 points / car; the cost of spot welding is calculated at 5 cents, and the spot welding cost of passenger cars reaches 150 US dollars, the spot welding cost of a car reaches 350-600 US dollars, accounting for 1 / 2-3 / 4 of the vehicle production cost, which prompts people to continuously study new spot welding electrode materials to reduce the cost of spot welding in the automobile production process . [0003] During the spot welding process, the spot welding electrode will inevitably u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C9/00C22C32/00B22F1/02B23K11/30
CPCC22C1/05C22C9/00C22C32/0073B23K11/30B22F2998/10B22F1/17B22F2003/175B22F3/1007B22F3/02B22F2009/043
Inventor 罗平董仕节汤臣张艳华蓝彬栩陈晨王义金胡东伟夏露肖瑶李智覃富城王冲杨祺邓宇鑫张海一晁飞扬王书文徐小涵张佳琪陈岗方泽成邵轩宇夏宇欣左雨菲丁文祥易少杰陈成
Owner HUBEI UNIV OF TECH
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