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A kind of preparation method of zrb2/cu composite material

A composite material and powder technology, applied in the field of preparation of ZrB2/Cu composite material, can solve problems such as electrode material loss, and achieve the effects of improving structure, good social and economic benefits, and excellent comprehensive performance

Active Publication Date: 2016-05-18
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of ZrB 2 / Cu composite preparation method, the prepared ZrB 2 / Cu composite materials can be used as candidate materials for EDM electrode materials, so as to overcome the serious loss of existing electrode materials and the need for frequent replacement.

Method used

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  • A kind of preparation method of zrb2/cu composite material
  • A kind of preparation method of zrb2/cu composite material
  • A kind of preparation method of zrb2/cu composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] ZrB 2 The preparation method of / Cu composite material, comprises the following steps:

[0027] (1) ZrB 2 Powder nickel plating treatment: take ZrB 2 Powder, pretreated in the order of pickling, sensitization, and activation, and then electroless nickel plating; ZrB after nickel plating 2 The powder is dried under vacuum and ready for use;

[0028] The pickling is treated with HCl, that is, ZrB 2 The powder was placed in a HCl solution with a volume fraction of 37%, stirred at a low speed for 30 minutes, and then pickled; the pickled powder was ultrasonically cleaned in absolute ethanol for 10 minutes, and then vacuum-dried for 4 hours;

[0029] The sensitization uses SnCl 2 Solution processing, specifically refers to the ZrB after pickling and drying 2 powder placed in SnCl 2 -Stirring at low speed in HCl solution for 30 minutes for sensitization treatment; the sensitization SnCl 2 -SnCl in HCl solution treatment 2 2H 2 The concentration of O is 0.1mol / L, and...

Embodiment 2

[0039] This embodiment prepares ZrB 2 / Cu composite material, the steps are the same as in Example 1, only adjusting ZrB in step (2) 2 And the volume ratio of Cu, the volume fraction of Cu is 60%, that is, ZrB after nickel plating 2 The powder weight is 20g, and the Cu powder is 40g; in the adjustment step (3), the pressure during hot-press sintering is 20MPa, the sintering temperature is 900°C, the heating rate is 100°C / min, and the holding time is 30min.

[0040] As-prepared ZrB 2 SEM image of the cross section of / Cu composite material figure 2 It can be seen from the figure that the structure of the material sample is dense, showing a fracture model combining ductile fracture and brittle fracture. image 3 Sintered ZrB 2 The SEM image of the worn surface of the / Cu composite material sample shows that the surface of the sample shows the characteristics of layered peeling and adhesive wear, and there are slight grooves on the surface.

Embodiment 3

[0042] This embodiment prepares ZrB 2 / Cu composite material, the steps are the same as in Example 1, only adjusting ZrB in step (2) 2 And the volume ratio of Cu, the volume fraction of Cu is 70%, that is, ZrB after nickel plating 2 The powder weight is 15g, and the Cu powder is 50g; in the adjustment step (3), the pressure during hot-press sintering is 30MPa, the sintering temperature is 900°C, the heating rate is 100°C / min, and the holding time is 45min.

[0043] The ZrB prepared in this embodiment 2 / Cu composite material for performance measurement, its bending strength is 475MPa, thermal diffusivity is 0.7781m 2 ·s, the thermal conductivity is 270W / (m·K), the resistivity is 2.1μΩ·cm, and the electrical conductivity is 0.48×106S / cm.

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Abstract

The invention belongs to the technical field of inorganic composite material preparation, and concretely relates to a ZrB2 / Cu composite material preparation method. The method comprises the steps of nickeling ZrB2powder, mixing and grinding, performing hot pressing and sintering. According to the invention, active element Ni and ZrB2 have good wetability, Ni and Cu can form good solid solution, a layer of Ni is plated on the surface of the ZrB2 through a chemical nickeling technology, so that interface combination of ZrB2 and Cu can be effectively improved, then a hot pressing sintering process is employed, ZrB2 and Cu after nickeling can be taken as the raw materials, and thereby the ZrB2 / Cu composite material with high density can be prepared under low temperature. The prepared ZrB2 / Cu composite material has excellent comprehensive property, while using in preparation of an electrode for EDM processing, the ZrB2 / Cu composite material can effectively reduce the electrode loss and replacing frequency, so that the ZrB2 / Cu composite material has good social and economic benefit.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic composite materials, in particular to a ZrB 2 / Cu composite material preparation method. Background technique [0002] Electrical discharge machining (Electrical Discharge Machining, referred to as EDM) is a special processing method that uses the electric erosion effect generated by the pulse discharge between the two electrodes immersed in the working fluid to erode conductive materials. Mechanism adapted to the needs of production development, which has been developed rapidly. [0003] In EDM, the performance of the tool electrode material directly affects the EDM performance of the electrode, such as processing rate, tool wear rate, workpiece surface quality, etc. In the prior art, copper-based composite materials have high strength, high electrical and thermal conductivity, good wear resistance and high temperature stability, and have been widely used in aerospace, electric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C1/10C22C9/00C22C30/02C22C32/00
Inventor 王海龙尚伟李剑赵笑统邵刚范冰冰张锐许红亮卢红霞陈德良
Owner ZHENGZHOU UNIV
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