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Foam iron-nickel composite metal material and preparation method thereof

A composite metal material, iron-nickel alloy technology, applied in metal material coating process, metal layered products, chemical instruments and methods, etc., can solve the problem of poor corrosion resistance and oxidation resistance, prone to cracking, accelerated material corrosion and other issues, to achieve the effect of strong market competitiveness, strong technical support, and reduced manufacturing costs

Active Publication Date: 2008-09-17
先进储能材料国家工程研究中心有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, due to the high tensile stress of the pure foam iron material, it is prone to cracking, and its corrosion resistance and oxidation resistance are poor, which is not conducive to long-term storage, transportation and use in industry, so it cannot be used on a large scale.
[0004] The foamed iron-based composite material is a material prepared by coating nickel on the iron matrix layer. Due to the large difference in physical properties of the two metals, iron and nickel, there is a large stress between the two different metal coatings. Therefore, in electroplating The coating is prone to cracking during the process; and because the nickel metal layer cannot completely cover the base iron metal layer, the nickel-iron iron forms a micro-galvanic battery, which accelerates the corrosion of the material, which also makes it impossible to apply on a large scale
[0005] The applicant disclosed a porous iron-nickel alloy material and its preparation method in the patent "windable porous iron-nickel alloy material" (application number 200410022872.4) previously applied for. Although the defects of the above two materials have been overcome, the Nickel still accounts for 30-50% of the total mass of the material, and the amount of nickel used is still relatively large

Method used

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  • Foam iron-nickel composite metal material and preparation method thereof

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Effect test

Embodiment 1

[0017] The product of this embodiment is a three-dimensional network structure, and the amount of plated metal is 410g / m 2 , the mass percentage of nickel in the product is 5%, and the balance is iron; the number of pores of the product is 110PPI, and the porosity is more than or equal to 95%.

[0018] Preparation: First, the conventional electroless nickel plating process is used to conduct the polyurethane sponge substrate, and then the conductive substrate is electroplated with iron-nickel alloy in one step in the overall electroplating tank, using NiSO 4 -FeCl 2 Alloy electroplating system, Ni in electroplating solution 2+ and Fe 2+ The total concentration of 45g / L, Ni 2+ Concentration and Fe 2+ The concentration ratio is 0.5, the reducing agent vitamin C concentration is 0.5g / L, the saccharin concentration is 3g / L, the temperature is 50°C, and the current density is 1000A / m 2 , the plating unit time is 24min / m 2 , the quality of the plated alloy is 400g / m 2 Then im...

Embodiment 2

[0020] The product of this embodiment is a three-dimensional network structure, and the amount of plated metal is 440g / m 2 , the mass percentage of nickel in the product is 12%, and the balance is iron; the porosity of the product is more than or equal to 85%.

[0021] Preparation: First, the conventional vacuum nickel plating process is used to conduct the fiber mesh base material, and then the conductive base material is electroplated with iron-nickel alloy in one step in the overall electroplating tank, and the Ni in the electroplating solution 2+ and Fe 2+ The total concentration is 60g / L, Ni 2+ Concentration and Fe 2+ The concentration ratio is 2.0, the complexing agent citric acid concentration is 18g / L, the saccharin concentration is 3g / L, the temperature is 50°C, and the current density is 500A / m 2 , the plating unit time is 48min / m 2 , the quality of the plated alloy is 400g / m 2 Then immerse the semi-finished product after alloy electroplating in the Watt electro...

Embodiment 3

[0023] The product in this embodiment has a two-dimensional network structure, and the amount of plated metal is 310g / m 2 , the mass percentage of nickel in the product is 29%, and the balance is iron; the porosity of the product is more than or equal to 80%.

[0024] Preparation: Firstly, the non-woven fabric substrate is conductive by using the conventional coating conductive particle process, and then the conductive substrate is electroplated with iron-nickel alloy in one step in the overall electroplating tank, using NiSO 4 -FeCl 2 Alloy electroplating system, Ni in electroplating solution 2+ and Fe 2+ The total concentration is 85g / L, Ni 2+ Concentration and Fe 2+ The concentration ratio is 3.0, the concentration of complexing agent potassium sodium tartrate is 15g / L, the concentration of saccharin is 3g / L, the temperature is 50°C, and the current density is 500A / m 2 , the plating unit time is 35min / m 2 , the quality of the plated alloy is 300g / m 2 Then immerse the...

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Abstract

The invention discloses a foam iron-nickel composite metallic material and a preparation method thereof. The foam iron-nickel composite metallic material has a three-dimensional or two-dimensional network structure; and comprises a base layer composed of iron-nickel alloy and a nickel layer above the alloy base layer as a protective layer, wherein the composite metallic material comprises (wt%) nickel 5-29 and iron in balance. The preparation method comprises electroplating iron-nickel alloy on a conducting porous substrate to obtain the iron-nickel alloy base layer, coating nickel layer above the base layer, and performing high-temperature heat treatment to form the protective layer. The inventive foam iron-nickel composite metallic material has reduced nickel consumption, so as to effectively reduce cost; and can replace porous nickel material to be used in battery substrate, electromagnetic shielding, noise absorption, filtration and other fields.

Description

technical field [0001] The invention relates to a porous metal material and a preparation method thereof, in particular to a foamed iron-nickel composite metal material and a preparation method thereof. Background technique [0002] Nickel foam is not only the electrode positive substrate material of the secondary battery, but also used in sound absorption, filtration, electromagnetic shielding and other fields. But for the nickel foam material, due to the large amount of metallic nickel used, the cost of nickel accounts for more than 80% of its manufacturing cost. At present, nickel resources are increasingly scarce, and the price of nickel is soaring. In 2005, it was about 80,000 yuan / ton, and now it is approaching 400,000 yuan / ton, an increase of nearly 5 times. In order to reduce production costs, people are trying to find other cheap metal foam materials to replace nickel foam, such as foam iron, foam iron-based composite materials, etc. [0003] However, due to the h...

Claims

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Application Information

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IPC IPC(8): C22C38/08B32B15/04C25D3/56C25D5/10C25D7/00C23C18/00C23C14/14
Inventor 钟发平陶维正张聚东贺持缓蒋素斌周小平
Owner 先进储能材料国家工程研究中心有限责任公司
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