Method for preparing copper porous material

A technology of porous material and copper metal, applied in the field of preparation of copper metal porous material, can solve the problems of long production process, uneven distribution of pore structure, low material strength, etc., and achieve the effect of stable and reliable quality

Inactive Publication Date: 2009-09-30
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the deficiencies in the prior art, such as uneven distribution of pore structure, low material strength, long production process and strict operating conditions, the present invention provides a method for preparing copper metal porous material, which has simple process, low cost and high pore size. Uniform distribution and reliable quality

Method used

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  • Method for preparing copper porous material

Examples

Experimental program
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Effect test

Embodiment 1

[0014] A copper-chromium alloy with a Cr element mass fraction of 40% is selected, wherein the Cr element in the copper-chromium alloy exists in the form of particles. use 1000 # Polish the surface of the copper-chromium alloy sample with metallographic sandpaper, the sample size is 10mm×10mm×3mm, rinse with water, degrease with absolute ethanol and dry at 20°C. Then immerse the surface-treated copper-chromium alloy sample in 1 liter of H2O containing 20 g of NaCl at a concentration of 2.7 mol / L. 2 SO 4 In the solution, the temperature of the solution is 25°C, and the oscillation frequency is 70KHz. After soaking for 20 hours, the test sample is taken out, rinsed with clean water, and dried to obtain a copper metal porous material.

Embodiment 2

[0016] A copper-chromium alloy with a Cr element mass fraction of 50% is selected, wherein the Cr element in the copper-chromium alloy exists in the form of particles. use 1000 # Polish the surface of the copper-chromium alloy sample with metallographic sandpaper, the sample size is 10mm×10mm×3mm, rinse with water, degrease with absolute ethanol and dry at 40°C. Then immerse the surface-treated copper-chromium alloy sample in 1 liter of H with a concentration of 3.0 mol / liter and 15 grams of NaCl 2 SO 4 In the solution, the temperature of the solution is 30°C, and the oscillation frequency is 40KHz. After soaking for 15 hours, the test sample is taken out, rinsed with clean water, and dried to obtain a copper metal porous material.

[0017] It was found by Neophot21 metallographic microscope that the structure of copper-chromium alloy is composed of Cu phase and Cr phase, wherein Cr phase is distributed in Cu matrix in irregular granular form (see figure 1 ), Example 1 and ...

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Abstract

The present invention discloses a method for preparing copper porous material, wherein the method comprises the following steps: (1) polishing the surface of copper chromium alloy with fine metallographical sandpaper, then flushing with clean water, after degreasing the absolute ethyl alcohol, drying the absolute ethyl alcohol in the temperature of 40-60DEG C; (2) immersing the surface-treated copper chromium alloy in H2SO4 solution which has a concentration of 2.5-3.0mol / liter and contains 15-20g of NaCl in per liter of H2SO4 and is in the temperature of 20-40 DEG C; and (3) under the ultrasonic oscillation with oscillation frequency of 40-80KHz, generating de-chromium corrosion, after the de-chromium corrosion is finished, flushing the alloy with clean water and drying, and the copper porous material can be obtained. The method of the invention has the advantages of simple technique, easy operation, and prepared copper porous material with the advantages of high porosity, uniform pore distribution, stable and reliable quality, etc. The method of the invention is suitable for industrial batch production.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a method for preparing porous copper metal materials. Background technique [0002] Porous metal material is a functional structural material developed in recent years with dual properties of function and structure. This type of material has good energy absorption performance, high damping performance, sound absorption performance and good thermal and electrical conductivity, and its density is small, Large specific surface area has become one of the hot topics in current materials research. At present, the methods for preparing porous metal materials are as follows: (1) Liquid phase method: mainly particle infiltration method, precision casting method, molten metal foaming method and hollow ball casting method. Porous metals with high porosity, large size and closed-pore structure can be prepared by this method, but the control of the preparation process is relatively complicated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C23F1/18
Inventor 张瑞军刘玉文刘建华
Owner YANSHAN UNIV
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