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Ni-Mn-Mo-Si intermetallic compound porous material and preparation method thereof

A ni-mn-mo-si, intermetallic compound technology, applied in the field of porous materials, can solve the problems of weak electrochemical catalytic activity, insufficient corrosion resistance, insufficient anti-oxidation performance, etc., to improve the electrochemical catalytic performance and stability. The effect of reducing energy consumption, reducing energy consumption and preparing energy consumption

Active Publication Date: 2018-07-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is to provide a Ni-Mn-Mo-Si intermetallic compound porous material and its preparation method to solve the problems of poor rigidity, insufficient corrosion resistance and poor electrochemical catalytic activity of current nickel metal porous materials. Weak and insufficient antioxidant properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Using Ni, Mn, Mo and Si powder as raw materials, mix according to the following composition ratio: Ni: 60g, Mn: 15g, Mo: 10g, Si: 15g. Put the prepared materials into a ball mill for mixing. The ball milling atmosphere is inert gas protection, the ball-to-material ratio is 3:1, and the ball milling time is 48 hours. Stir the material with a spiral mixer, and add 10 mL of stearic acid alcohol solution, including 2 g of stearic acid, and dry it in a vacuum drying oven at a temperature of 90° C. for 60 minutes. Adopt molding equipment to carry out pressing, and pressing pressure is controlled at 120MPa. Put the cold compact into a hydrogen furnace for degreasing, the degreasing temperature is 500°C, the holding time is 60 minutes, and the heating rate is controlled at 3°C / min. The degreased green body is put into a vacuum furnace for three-stage reaction sintering. The reaction temperature in the first stage is 800°C, the heating rate is controlled at 20°C / min, the react...

Embodiment 2

[0030] Use Ni, Mn, Mo and Si powder as raw materials, and mix according to the following composition ratio: Ni: 50g, Mn: 20g, Mo: 15g, Si: 15g. Put the prepared materials into a ball mill for mixing. The ball milling atmosphere is inert gas protection, the ball-to-material ratio is 1:1, and the ball milling time is 24 hours. Stir the material with a spiral mixer, and add 15 mL of stearic acid alcohol solution, including 3 g of stearic acid, and dry it in a vacuum drying oven at a temperature of 70 ° C for 120 minutes. Adopt molding equipment to press, and the pressing pressure is controlled at 80MPa. Put the cold compact into a hydrogen furnace for degreasing, the degreasing temperature is 550°C, the holding time is 60 minutes, and the heating rate is controlled at 5°C / min. The degreased green body is put into a vacuum furnace for three-stage reaction sintering. The reaction temperature in the first stage is 800°C, the heating rate is controlled at 20°C / min, the reaction sin...

Embodiment 3

[0032] Using Ni, Mn, Mo and Si powder as raw materials, mix according to the following composition ratio: Ni: 75g, Mn: 10g, Mo: 10g, Si: 5g. Put the prepared materials into a ball mill for mixing, the atmosphere of the ball mill is inert gas protection, the ratio of ball to material is 5:1, and the ball mill time is 48 hours. Use a spiral mixer to turn the material, and at the same time add 10 mL of stearic acid alcohol solution, including 1 g of stearic acid, and dry it in a vacuum drying oven at a temperature of 95 ° C for 60 minutes. Adopt molding equipment to carry out pressing, and pressing pressure is controlled at 350MPa. Put the cold compact into a hydrogen furnace for degreasing, the degreasing temperature is 450°C, the holding time is 180 minutes, and the heating rate is controlled at 2°C / min. The degreased green body is put into a vacuum furnace for three-stage reaction sintering. The reaction temperature in the first stage is 850°C, the heating rate is controlled...

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Abstract

The invention relates to a Ni-Mn-Mo-Si intermetallic compound porous material. The Ni-Mn-Mo-Si intermetallic compound porous material comprises the following components in parts by weight: 50-75 partsof Ni, 10-20 parts of Mn, 10-15 parts of Mo, and 5-15 parts of Si. The invention also relates to a preparation method of the abovementioned Ni-Mn-Mo-Si intermetallic compound porous material. The method comprises the steps of weighing Ni, Mn, Mo and Si powder; mixing; performing ball milling on the mixture to obtain mixed powder; overturning the materials and synchronously adding a stearic alcohol solution; drying the mixture in a vacuum drying box; screening the mixture through a 60-mesh screen after drying; taking the screen underflow; performing cold pressing; degreasing a cold-pressed blank; transferring the cold-pressed blank into a vacuum furnace for three-stage reaction sintering; and cooling the product to reach the room temperature after sintering. The prepared Ni-Mn-Mo-Si intermetallic compound porous material is stable in quality, high in repeatability, and applicable to the fields such as the field of filtering and the field of electrode materials.

Description

technical field [0001] The invention belongs to the technical field of porous materials, and in particular relates to a Ni-Mn-Mo-Si intermetallic compound porous material and a preparation method thereof. Background technique [0002] At present, nickel metal porous materials are paid attention to and researched as electrode materials because of their good electrochemical catalytic properties. However, traditional nickel metal porous materials have disadvantages such as poor rigidity, insufficient corrosion resistance, weak electrochemical catalytic activity, and insufficient oxidation resistance. [0003] Ni-Mn-Mo-Si intermetallic compounds are based on nickel-based alloys, introducing intermetallic compound-forming elements, and generating Ni-Mn-Mo-Si intermetallic compound porous materials through element powder reaction synthesis. Among them, a high-temperature solid solution phase can be formed between Ni and Mn, and a Ni phase can be formed between Ni and Mo. 4 Mo, N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/08B22F3/11B22F3/10
CPCB22F3/1007B22F3/11C22C19/03
Inventor 江垚王重贺贺跃辉沈波涛李文浩
Owner CENT SOUTH UNIV
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