A kind of preparation method of w-cu composite plate with cu phase in finger-like gradient distribution

A technology of gradient distribution and composite board, which is applied in the field of preparation of W-Cu composite board, can solve the problems of less research and achieve the effect of simple process, good sintering activity and easy acquisition

Active Publication Date: 2022-07-12
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, most of the W-Cu gradient composites prepared at present have a layered structure, and there are few studies on W-Cu gradient composites that have a finger-like gradient distribution of the Cu phase.

Method used

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  • A kind of preparation method of w-cu composite plate with cu phase in finger-like gradient distribution
  • A kind of preparation method of w-cu composite plate with cu phase in finger-like gradient distribution
  • A kind of preparation method of w-cu composite plate with cu phase in finger-like gradient distribution

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Embodiment 1

[0033] (1) After mixing ammonium metatungstate, ammonium nitrate, glycine and ethylenediaminetetraacetic acid, add deionized water to disperse, and then put it into a muffle furnace under an air atmosphere at 200 °C for constant temperature combustion for 2 hours to obtain WO X Powder; mass ratio of ammonium metatungstate, ammonium nitrate, glycine, EDTA and deionized water 12:19.2:7:0.7:50. figure 2 for the income WO X From the SEM photograph of the powder, it can be seen that the obtained powder is in the shape of a short rod, with a diameter of 0.5-2 μm and a length of 2-10 μm.

[0034] Weigh WO X50g of powder, 100g of 0.8μm W powder, 4g of polyethersulfone, 2.67g of polyvinylpyrrolidone, and 26.7g of N-methylpyrrolidone were added together into a ball milling tank, the ratio of ball to material was 1:5, and the ball was milled for 12 hours at a speed of 400 r / min to obtain Slurry with a solids content of 82%.

[0035] (2) the obtained slurry is casted on the PET film t...

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Abstract

The invention discloses a preparation method of a W-Cu composite plate in which Cu phases are distributed in a finger-like gradient. The WO obtained by a combustion synthesis method using ammonium metatungstate as a raw material is added to W powder. X powder, and adding a binder and a pore-forming agent to make a slurry, then through casting, soaking in water, and sintering to obtain a W skeleton with finger-like distribution of pores, and then infiltrating Cu to obtain the target product. In the W-Cu composite material prepared by the method of the invention, the Cu phase is distributed in a finger-like gradient from the infiltration surface to the interior of the sample, and the Cu phase and the W phase are pinned to each other, and the W-Cu interface has good bonding strength; The method has the characteristics of adjustable material composition performance, simple process, low cost, suitable for large-scale production and the like.

Description

technical field [0001] The invention relates to a preparation method of a W-Cu composite plate with a Cu phase in a finger-like gradient distribution, belonging to the field of metal matrix composite material preparation. Background technique [0002] Functionally graded material (FGM) refers to the continuous change of the structure, composition, density, etc. of two or more materials with different properties, so that the internal interface is reduced or even disappeared, so as to obtain a non-uniform change in material composition and a gradient in performance. Variation of new heterogeneous composites. The research of FGM includes material design, material synthesis (preparation) and material property evaluation. These three parts are complementary and indispensable, and the core part is material preparation. [0003] W-Cu FGM combines the good electrical conductivity, thermal conductivity and corrosion resistance of Cu and the high hardness, strength and thermal stabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F5/00B22F1/10B22F3/11B22F3/22B22F3/26B22F9/04C01G41/02C22C27/04C22C1/05
CPCC22C1/058B22F5/006B22F9/04B22F3/1021B22F3/26B22F3/1121B22F3/22C01G41/02C22C27/04Y02P10/25C22C1/0425C22C9/00C22C1/0475B22F3/1109C22C1/045C01P2002/85C01P2004/03C01P2004/61C01P2004/62C01P2004/16B22F2998/10C22C1/05B22F1/107B22F2999/00B22F3/10B22F2201/013B22F1/102B22F2009/043B22F2301/10B22F2301/20
Inventor 程继贵周锐魏邦争陈鹏起郑肃喻新喜
Owner HEFEI UNIV OF TECH
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