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Ti-Mn-Si intermetallic compound porous material and preparation method thereof

An intermetallic compound, ti-mn-si technology, applied in the field of porous materials, can solve the problems of insufficient oxidation resistance, weak rigidity, poor corrosion resistance, etc., to achieve good pore structure stability and microstructure uniformity, enhanced The effect of metallurgical bonding and reducing energy consumption of sintering

Active Publication Date: 2018-09-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a Ti-Mn-Si intermetallic compound porous material and its preparation method to solve the problems of weak rigidity, poor corrosion resistance and oxidation resistance in polymer porous materials and metal porous materials. Insufficient performance and other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 31.5g of titanium powder, 34.5g of manganese powder, and 34g of silicon powder, put the weighed materials into a ball mill for mixing, the ball milling atmosphere is inert gas protection, the ball to material ratio is 2:1, 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. After drying, use a 60-mesh sieve to sieve, and use the undersize. Adopt molding equipment to carry out pressing, and pressing pressure is controlled at 150MPa. Put the cold compact in a hydrogen furnace for degreasing, the degreasing temperature is 450°C, the holding time is 120 minutes, and the heating rate is controlled at 2°C / min. The degreased green body is put into a vacuum furnace for two-stage reaction sintering. In the first stage, the reaction temperature is 800°C, the heating rate is controlled at 15°...

Embodiment 2

[0027] Weigh 20g of titanium powder, 55g of manganese powder, and 25g of silicon powder, put the weighed 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 48 hours. Stir the material with a spiral mixer, and add 15mL of stearic acid alcohol solution, including 5g of stearic acid, and dry it in a vacuum drying oven at a temperature of 80°C for 100 minutes. After drying, use a 60-mesh sieve to sieve, and use the undersize. Adopt molding equipment to carry out pressing, and pressing pressure is controlled at 100MPa. Put the cold compact into a hydrogen furnace for degreasing, the degreasing temperature is 400°C, the holding time is 200 minutes, and the heating rate is controlled at 3°C / min. The degreased green body is put into a vacuum furnace for two-stage reaction sintering. The reaction temperature in the first stage is 850°C, the heating rate is controlled at 20°C / min, ...

Embodiment 3

[0029] Weigh 50g of titanium powder, 20g of manganese powder, and 30g of silicon powder, put the weighed 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 12 hours. Use a spiral mixer to turn the material, and add 15mL of stearic acid alcohol solution, including 5g of stearic acid, and dry it in a vacuum drying oven at a temperature of 70°C for 120 minutes. After drying, use a 60-mesh sieve to sieve, and use the undersize. Adopt molding equipment to carry out pressing, and pressing pressure is controlled at 300MPa. Put the cold compact in a hydrogen furnace for degreasing, the degreasing temperature is 450°C, the holding time is 120 minutes, and the heating rate is controlled at 2°C / min. The degreased green body is put into a vacuum furnace for two-stage reaction sintering. In the first stage, the reaction temperature is 800°C, the heating rate is controlled at 15°C / min,...

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Abstract

The invention relates to a Ti-Mn-Si intermetallic compound porous material and a preparation method thereof. The Ti-Mn-Si intermetallic compound porous material is prepared from raw materials in partsby weight: 20-60 parts of Ti, 15-55 parts of Mn and 25-65 parts of Si. The preparation method comprises the steps that the raw materials are weighed and mixed, and mixed powder is obtained; a stearicacid alcoholic solution is added while the materials are turned over, then the mixture is dried in a vacuum drying box, and sieved by adopting a 60-mesh sieve, and a screen underflow is taken and used; pressing is conducted by adopting cold-pressing forming equipment, and a cold-pressing green body is obtained; the cold-pressing green body is subjected to degreasing in a hydrogen or inert gas furnace, the degreasing temperature is 400-500 DEG C, the heat preservation time is 120-240 minutes, the warming rate is controlled to be 1-5 DEG C / min, and a degreased green body is obtained; the degreased green body is placed in a vacuum furnace to be subjected to two-stage reaction sintering; and after sintering is ended, the cooling speed is controlled to be 10-20 DEG C / min, the product is cooledto be at the room temperature, and the Ti-Mn-Si intermetallic compound porous material is obtained. The prepared Ti-Mn-Si intermetallic compound porous material is stable in quality, has the good repeatability, and is suitable for being used in the fields of filtration and electrode materials and the like.

Description

technical field [0001] The invention belongs to the technical field of porous materials, and in particular relates to a Ti-Mn-Si intermetallic compound porous material and a preparation method thereof. Background technique [0002] Currently, porous materials mainly include polymer materials and inorganic materials. Among them, inorganic porous materials mainly include ceramic materials and metal materials. Porous materials are widely used in energy, separation, catalysis and other fields. However, polymer porous materials have problems such as insufficient strength, poor high temperature resistance, and insufficient corrosion resistance of organic solvents. Metal porous materials, such as traditional porous titanium, porous stainless steel, and porous nickel alloys, have defects such as weak rigidity, poor corrosion resistance, and insufficient oxidation resistance. Ceramic porous materials have problems such as weak thermal shock resistance and poor machinability. [0...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C22/00C22C30/00C22C1/08
CPCB22F3/1121C22C14/00C22C22/00C22C30/00
Inventor 江垚王重贺贺跃辉沈波涛李文浩
Owner CENT SOUTH UNIV
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