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Foam metal with microscopic oriented hole structure and preparation method of foam metal

A metal foam and directional hole technology, which is applied in the field of metal foam materials, can solve the problems of poor energy absorption efficiency and low strength, and achieve the effects of simple preparation process, high energy absorption rate, and convenient mass production

Active Publication Date: 2019-03-19
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By imitating the microstructure of natural biomaterials, the design and preparation of metal foams with microscopic oriented pore structures is expected to solve the problems of low strength and poor energy absorption efficiency in traditional metal foams, so as to promote them to better meet the needs of engineering applications.

Method used

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  • Foam metal with microscopic oriented hole structure and preparation method of foam metal
  • Foam metal with microscopic oriented hole structure and preparation method of foam metal
  • Foam metal with microscopic oriented hole structure and preparation method of foam metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]In this embodiment, the nickel foam with microscopic directional pore structure is prepared, and the raw materials used include metal nickel powder (average particle diameter 50nm), water, hydroxypropyl methylcellulose powder (average particle diameter 180 μm), polyvinyl alcohol, Sucrose and polyacrylic acid. Concrete preparation process is as follows:

[0031] (A) Preparation of water-based slurry

[0032] Weigh 440g of water and add it to a 2L plastic jar, then add 2.2g of hydroxypropyl methylcellulose powder, 80g of metal nickel powder, 4g of sucrose, 4g of polyvinyl alcohol and 2g of polyacrylic acid to the jar, stirring continuously Until the slurry is evenly dispersed, add 6 zirconia balls each with a diameter of 3mm, 6mm and 10mm to the slurry, and drop 5 drops of defoamer (about 0.35mL). The defoamer is Nanjing Huaxing defoamer The XPM-120 defoamer produced by Agent Co., Ltd., after sealing the cap of the jar, placed it on a roller ball mill for ball milling. T...

Embodiment 2

[0041] In this example, the nickel foam reinforced with graphene with a microscopic oriented pore structure is prepared, and the raw materials used include graphene (diameter 5-10 μm, thickness 3-10 nm), metal nickel powder (average particle size 50 nm), water , sodium lauryl sulfate, hydroxypropyl methylcellulose (average particle size of 180 μm), polyvinyl alcohol, sucrose and polyacrylic acid. Concrete preparation process is as follows:

[0042] (A) Preparation of water-based slurry

[0043] The difference between this step and step (A) in Example 1 lies in the type and amount of raw materials, specifically: 48g of metal nickel powder, 120g of water, 0.24g of sodium lauryl sulfate, 0.12g of graphene, hydroxypropyl Methylcellulose 1.8g, sucrose 1.44g, polyvinyl alcohol 1.44g, polyacrylic acid 0.72g. All the other operations are the same as step (A) in Example 1.

[0044] (B) Frozen casting

[0045] The operation of this step is the same as step (B) in Example 1.

[0046...

Embodiment 3

[0052] In this example, aluminum foam with a microscopic directional pore structure is prepared, and the raw materials used include graphene (diameter 5-10 μm, thickness 3-10 nm), flake metal aluminum powder (average sheet diameter 10 μm), water, dodecane Sodium Hydroxyl Sulfate, Polyvinyl Alcohol, Sucrose, and Polyacrylic Acid. Concrete preparation process is as follows:

[0053] (A) Preparation of water-based slurry

[0054] The difference between this step and step (A) in Example 1 lies in the type and amount of raw materials, specifically: 40 g of flake metal aluminum powder, 200 g of water, 0.4 g of sodium lauryl sulfate, 0.336 g of graphene, sucrose 2g, polyvinyl alcohol 2g, polyacrylic acid 0.8g. All the other operations are the same as step (A) in Example 1.

[0055] (B) Frozen casting

[0056] The operation of this step is the same as step (B) in Example 1.

[0057] (C) vacuum freeze drying

[0058] The operation of this step is the same as step (C) in Example 1...

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Abstract

The invention relates to the field of foam metal materials, in particular to foam metal with a microscopic oriented hole structure and a preparation method of the foam metal. The foam metal has an oriented hole structure microscopically, it is shown that a metal skeleton and air holes are subjected to orientation arrangement in a slice layer mode in the freezing direction of a preparation process,the porosity is 10%-90%, the hole diameter is 0.3[mu]m-600[mu]m, and the skeleton of the foam metal can be reinforced by adding a nano carbon material, wherein the content of the nano carbon materialis 0%-10% in percentage by mass, the balance is metal, and the added nano carbon material is preferentially oriented in a metal skeleton matrix in the arrangement direction of the skeleton. Accordingto the foam metal with the microscopic oriented hole structure and the preparation method of the foam metal, the metal foam is prepared by the processes of water-based slurry preparation, freeze casting, vacuum freeze drying, organic matter removal and sintering. The foam metal has the outstanding performance of light weight, high specific strength, high energy absorption rate, sound absorption,heat insulation and the like, and the preparation method is simple in process, low in cost, energy-saving and environmentally friendly and suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of foamed metal materials, in particular to a foamed metal with a microscopic directional pore structure and a preparation method thereof. Background technique [0002] As a structural functional material, metal foam is widely used in the fields of chemical industry, transportation, energy and construction, and plays an extremely important role. At the same time, the rapid development of various fields and new application requirements also affect the mechanical properties of metal foam. and functions are constantly putting forward higher and higher requirements. Optimizing the design and preparation of metal foam to obtain excellent mechanical properties such as lighter weight, high specific strength, and high energy absorption rate and certain functional characteristics is of great significance for promoting metal foam to better meet the needs of engineering applications. [0003] The porous structure of the metal f...

Claims

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Application Information

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IPC IPC(8): B22F3/11B22F3/22
CPCB22F3/1109B22F3/222
Inventor 刘增乾张健张哲峰
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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