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A kind of porous nickel alloy and preparation method thereof

A porous nickel and nickel alloy technology, applied in the field of metal materials, can solve the problems of dealloying corrosion, difficulty in preparing bulk materials, etc., and achieve the effect of simple preparation process

Active Publication Date: 2020-06-30
无锡腾达海川新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The dealloying method is a method for preparing nanoporous materials, and it can also be used to prepare porous nickel alloys. However, this method belongs to dealloying corrosion. When it is used to prepare porous metal materials, it is generally carried out on the surface of the metal material, and it is difficult to prepare large pieces. Material

Method used

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  • A kind of porous nickel alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of Ni34Mn5Zn50Sn6Cu2Mg2AlGa nickel alloy precursor: according to the chemical composition and mass percentage of the nickel alloy precursor, Zn: 50%, Mn: 5%, Sn: 6%, Cu: 2%, Mg: 2%, Ni : 34%, the balance 1% is aluminum and gallium elements, the raw materials are added to the crucible of the resistance furnace, after the alloy is completely melted and uniform, cast, and the nickel alloy precursor ingot is obtained after cooling;

[0034] (2) Ni34Mn5Zn50Sn6Cu2Mg2AlGa nickel alloy precursor ingot is cut to obtain 20×20×1mm small pieces, which are hung in the quartz furnace tube of vacuum heat treatment furnace, kept at 500°C for 5 hours in high vacuum, and then kept at 700°C for 2 hours, and the vacuum degree is maintained Within 10Pa, a three-dimensional porous nickel alloy is obtained, with a pore size of 2-5 μm and a porosity of 40%. The picture of the porous nickel alloy is as follows figure 1 shown.

Embodiment 2

[0036] (1) Preparation of Ni40Zn40Cu8Sn7Mn3GaMgAl nickel alloy precursor: according to the chemical composition and mass percentage of the nickel alloy precursor, Cu: 8%, Zn: 40%, Sn: 7%, Mn: 3%, Ni: 40%, Yu The amount of 2% is gallium, magnesium and aluminum elements, and the raw materials are added to the crucible of the induction furnace. After the alloy is completely melted and uniform, it is cast, and after cooling, the nickel alloy precursor ingot is obtained;

[0037] (2) Ni40Zn40Cu8Sn7Mn3GaMgAl nickel alloy precursor ingot was cut to obtain 10×10×0.5mm small pieces, hung in a small vacuum heat treatment furnace in the laboratory, kept at 500°C for 4 hours under high vacuum, and the vacuum degree was kept within 10Pa to obtain three-dimensional Porous nickel alloy with a pore diameter of 2-10 μm and a porosity of 50%.

Embodiment 3

[0039] (1) Preparation of Ni40Zn40Ga10Mn5Mg3AlSnCu nickel alloy precursor: according to the chemical composition and mass percentage of the nickel alloy precursor, Zn: 40%, Ga: 10%, Mn: 5%, Mg: 3%, Ni: 40%, and The amount of 2% is aluminum, tin and copper elements, and the raw materials are added to the crucible of the resistance furnace. After the alloy is completely melted and uniform, it is cast, and after cooling, the nickel alloy precursor ingot is obtained;

[0040](2) Ni40Zn40Ga10Mn5Mg3AlSnCu nickel alloy precursor ingot, wire-cut into 20×20×0.5mm thick slices, sanded to 0.3mm thick, hung in a small laboratory vacuum heat treatment furnace, kept at 500°C for 2 hours, and then Insulate at 600°C for 1 hour, continue high vacuum, keep the vacuum within 10Pa, and obtain a three-dimensional porous nickel alloy with a pore size of 2-10 μm and a porosity of 50%.

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Abstract

The invention provides a porous nickel alloy and a preparation method thereof. The porous nickel alloy comprises, by mass percent, 1-30% of Cu, less than or equal to 5% of Zn, less than or equal to 2%of Mn, 2-20% of Sn, 0.1-15% of Ga, less than or equal to 5% of Mg, less than or equal to 5% of Al, and the balance Ni and inevitable impurities. The preparation method comprises the steps of (1) melting, casting and cooling an alloy raw material to obtain a nickel alloy precursor cast ingot; (2) cutting and polishing the nickel alloy precursor cast ingot to obtain nickel alloy precursor samples;(3) conducting vacuum heat treatment on the nickel alloy precursor samples at the temperature of 450-700 DEG C and conducting heat preservation or poikilothermic treatment in a continuous vacuum environment to obtain the porous nickel alloy. The process method is simple and suitable for large-scale production. The porosity of the obtained product is adjustable. The porous nickel alloy can be applied to the fields such as fuel cell frames, separation, filtration, catalysis, noise reduction, shock absorption, shielding and heat exchange.

Description

technical field [0001] The invention belongs to the field of metal materials, and particularly provides a porous nickel alloy and a preparation method thereof. Background technique [0002] In recent years, the development and application of metal porous materials have attracted more and more attention. Metal porous materials (metal foam) are new engineering materials with excellent physical properties and good mechanical properties, which are composed of rigid skeleton and internal holes. It developed rapidly in the late 1980s. Its excellent physical properties (such as low density, high stiffness, large specific surface area, good energy absorption and vibration reduction performance, good noise reduction effect, high electromagnetic shielding performance, etc.) have extended its application fields to aviation, electronics, medical materials and fields of biochemistry. Moreover, metal porous materials with through holes also have the advantages of strong heat transfer an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C1/08C22C30/02C22C30/04C22C30/06C22F1/02C22F1/10
CPCC22C1/02C22C1/023C22C1/08C22C18/00C22C19/03C22C30/02C22C30/04C22C30/06C22F1/02C22F1/10
Inventor 任伊宾金光
Owner 无锡腾达海川新材料有限公司