Method for preparing ZrB2-Cu composite powder

A composite powder, zrb2-cu technology, applied in the field of ceramic/metal composite materials preparation, can solve the problems of difficult uniform distribution of two phases, low performance of composite materials, weak combination of two phase interfaces, etc., to achieve crystallinity without impurity phases, coating Dense, good crystallinity effect

Inactive Publication Date: 2015-05-27
裴洁
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Problems solved by technology

However, due to the ZrB 2 The wettability with Cu is poor, the distribution of the two phases is difficult to

Method used

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Example Embodiment

[0011] Specific embodiment: The preparation process of the present invention includes ZrB 2 Two steps of pretreatment and electroless copper plating;

[0012] The ZrB 2 The preprocessing step is to add ZrB 2 The powder is soaked in dilute hydrochloric acid solution for 20 min, washed with deionized water 3 times, and then ZrB 2 The powder is soaked in SnCl2 solution for sensitization for 20 minutes, washed with deionized water 3 times, and finally ZrB 2 Powder soaked in PdCl 2 Activate in the solution for 40 minutes and wash with deionized water for 3 times. The pretreatment process is completed in a magnetic stirrer. During the pretreatment process, the concentration of hydrochloric acid is 100ml / L, SnCl 2 +HCl is 30g / L+25ml / L, PdCl 2 +HCl is 0.7g / L+30ml / L;

[0013] The electroless copper plating step is that the plating solution is composed of the main salt CuS0 4 ·5H 2 0, reducing agent HCHO, complexing agent Na 2 EDTA, stabilizer 2,2’-pyridine, pH adjuster NaOH, 15g pretreated Zr...

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Abstract

The invention provides a method for preparing ZrB2-Cu composite powder, belongs to the field of ceramic/metal composite material preparation and in particular relates to the method for preparing the ZrB2-Cu composite powder having a good internal metal-ceramic binding property. The method comprises two steps of ZrB2 preprocessing and chemical copper plating; the ZrB2 powder is chemically copper-plated by use of a chemical plating method, and then the Cu-coated ZrB2 powder can be prepared. The composite powder prepared by use of the method is good in dispersity; the copper coating is excellent in crystallinity without impurity phase; the surface of the coating is accumulated randomly by fine metal spherical particles; the coating is compact, uniform, flat and smooth, and has wide application prospect.

Description

technical field [0001] The invention belongs to the field of preparation of ceramic / metal composite materials. Background technique [0002] ZrB 2 -Cu composite material is an immiscible ceramic / metal composite material formed by ZrB2 with high melting point and high hardness and Cu with high thermal conductivity and electrical conductivity. This composite material has the dual characteristics of ceramic and metal, which can greatly improve the wear resistance and arc erosion resistance of the material. It is an electrical contact material with high conductivity, high wear resistance, and certain mechanical and mechanical strength. At present, there is little research on the preparation of zirconium diboride ceramics and metal copper composite materials in China. Venkateswaran T et al. used spark plasma sintering (SPS) to prepare ZrB with high hardness and fracture toughness. 2 -6% Cu (mass fraction) composite material, because the addition of Cu significantly improves the...

Claims

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Application Information

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IPC IPC(8): C23C18/40B22F9/24
Inventor 裴洁
Owner 裴洁
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