Preparation method of porous nickel

A porous nickel and production method technology, applied in the field of porous metal materials, can solve the problems of poor sample consistency, high equipment requirements, and poor pore connectivity, and achieve the effects of adjustable pore size, low environmental pollution, and adjustable pore volume

Inactive Publication Date: 2014-03-12
XINGHUA PRECISION CASTING & FORGING IND RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Porous nickel, also known as nickel foam and nickel sponge, has a large specific surface area and a relative density of 0.2~0.3, which is about 1/4 of water, 1/3 of wood, 1/10 of aluminum, and 1/30 of iron , the material has strong thermal conductivity, and its porous structure has wide-frequency sound absorption characteristics. , electrodeposition method, melt foaming method, spark plasma sintering method, etc. Generally, the porosity of powder sintered porous metal materials is low, the highest can only reach 40%, and the connectivity of the pores is poor, which is difficult to meet the requirements of catalytic applications. Requirements; the porous metal material obtained by loose-pack sintering can reach a porosity of 40% to 60%, but the uniformity and pore size of the pores in the material are difficult to control, resulting in

Method used

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  • Preparation method of porous nickel

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Experimental program
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Effect test

Embodiment 1

[0016] The present embodiment specifically implements a production method of porous nickel, which is characterized in that: pure nickel and pure zinc are melted in a crucible at a mass ratio of 3:2, and the pure nickel and pure zinc that are kept at 200°C for 1.0h are placed under the pressure of pure zinc 1. Put pure nickel on top into the crucible preheated to 700°C, and then raise the temperature to 1000°C until the pure nickel is completely melted to obtain a nickel-zinc alloy melt, adjust the melt temperature to 950°C, and Cast nickel-zinc alloy into the pure copper mold heated for 30 minutes. The effective part of the cavity of the copper mold is plate type. The size of the plate cavity is length × width × height = 200mm × 200mm × 10mm. Then carry out vacuum evaporation to the obtained nickel-zinc alloy, the nickel-zinc alloy is heated to 800 ℃, in vacuum degree 5 * 10 -2 Keep it under Pa for 30 minutes, and the obtained material is a porous nickel material.

[0017] f...

Embodiment 2

[0019] This embodiment specifically implements a production method of porous nickel, which is characterized in that: pure nickel and pure zinc are melted in a crucible at a mass ratio of 5:3, and the pure nickel and pure zinc kept at 300°C for 0.5h are Put it into the crucible preheated to 750°C in the way of bottom and pure nickel on top, and then raise the temperature to 1020°C until the pure nickel is completely melted to obtain a nickel-zinc alloy melt, adjust the melt temperature to 980°C, and then The nickel-zinc alloy is poured into the pure copper mold preheated for 50 minutes. The effective part of the cavity of the copper mold is a plate type. The size of the plate cavity is length × width × height = 50mm × 50mm × 5mm. , and then carry out vacuum evaporation to the obtained nickel-zinc alloy, heat the nickel-zinc alloy to 830°C, and in a vacuum degree of 2×10 -2 Keep it under Pa for 25 minutes, and the obtained material is a porous nickel material.

[0020] The resu...

Embodiment 3

[0022] This embodiment specifically implements a production method of porous nickel, which is characterized in that: pure nickel and pure zinc are melted in a crucible at a mass ratio of 5:3, and the pure nickel and pure zinc kept at 260°C for 0.7h are Put it into the crucible preheated to 730°C in the way of bottom and pure nickel on top, and then raise the temperature to 1020°C until the pure nickel is completely melted to obtain a nickel-zinc alloy melt, adjust the melt temperature to 980°C, The nickel-zinc alloy is poured into the pure copper mold preheated for 40 minutes. The effective part of the cavity of the copper mold is plate type. , and then carry out vacuum evaporation to the obtained nickel-zinc alloy, heat the nickel-zinc alloy to 850°C, and vacuum degree 1×10 -2 Keep it under Pa for 30 minutes, and the obtained material is a porous nickel material.

[0023] The results of SEM photos and EDS energy spectrum analysis are similar to those of Example 1. After test...

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Abstract

The invention provides a preparation method of porous nickel. The preparation method is characterized by comprising the steps: melting pure nickel and pure zinc in a crucible by specified proportions to obtain a nickel-zinc alloy melt, adjusting the temperature of the melt to the range from 950 DEG C to 1000 DEG C, casting in a copper mold, and then performing vacuum evaporation on the obtained nickel-zinc alloy to obtain the material, namely the porous nickel material. The method has the advantages of simple process, low environmental pollution, adjustable pore size and porosity and the like.

Description

technical field [0001] The invention belongs to the field of porous metal materials, in particular to a method for preparing porous nickel materials by adopting alloy selective evaporation technology. technical background [0002] Due to the advantages of high strength, adjustable pore shape and size, and energy absorption, porous metals have attracted increasing attention in the fields of chemical industry, automobiles, and aviation. In recent years, the research on porous metals in the field of catalysis is gradually rising. In view of the characteristics of high flow rate catalysis, the selected catalytic materials should have the following characteristics: high content of active substances per unit volume; high purity, low surface pollution, large specific surface area; certain strength to resist the impact of fluid; resistance to the catalyzed fluid Small. Catalytic materials usually supported by inactive substances such as carbon, ceramics, and stainless steel cannot ...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C19/03
Inventor 陈刚赵玉涛张振亚杨睿
Owner XINGHUA PRECISION CASTING & FORGING IND RES INST CO LTD
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