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Preparation method of controllable volume fraction Ti2AlCp/Al base composite material

A composite material and volume fraction technology, which is applied in the field of aluminum matrix composite materials, can solve the problems of difficult preparation of reinforcement prefabricated blocks, and achieve the effects of controllable reinforcement content, increased hardness, and simple preparation process

Inactive Publication Date: 2016-01-06
江苏华旺新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a method for preparing a novel particle-reinforced aluminum-based composite material, which solves the problem of difficulty in the preparation of reinforcement prefabricated blocks by avoiding the use of binders, and controls the reinforcement in the composite material by adding aluminum powder to the prefabricated blocks. The content in the final preparation of Ti by squeeze casting method 2 AlC Particle Reinforced Al Matrix Composites

Method used

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  • Preparation method of controllable volume fraction Ti2AlCp/Al base composite material
  • Preparation method of controllable volume fraction Ti2AlCp/Al base composite material
  • Preparation method of controllable volume fraction Ti2AlCp/Al base composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Ti 2 AlC with 20% Ti by volume 2 AlC p Preparation of Al / Al composites

[0027] Step 1: Calculate the required Ti according to formulas (1) and (2) 2 The quality of AlC powder and Al powder and use the precision balance that precision is 0.1mg to weigh out their quality respectively, carry out 12 hours mechanical mixing with absolute ethanol by weight ratio, then mix The final powder was dried in an electric blast drying oven at a temperature of 70° C. for 15 hours.

[0028] Step 2: Put the dried mixed powder in a glass beaker, then spray distilled water into the powder raw material, and stir the powder while spraying distilled water until it is in a semi-wet state that is uniform, fluffy and non-agglomerated. Then it is slowly poured into a cylindrical steel mold, and the semi-wet mixed powder is flattened without applying downward pressure, and cold-pressed on a four-column universal hydraulic press. Slowly pressurize when pressing, control the press to slowly pr...

Embodiment 2

[0032] Ti 2 AlC with 45% Ti by volume 2 AlC p Preparation of Al / Al composites

[0033] Step 1: Calculate the required Ti according to formula (1) 2 The quality of the AlC powder was weighed by a precision balance with an accuracy of 0.1 mg.

[0034] Step 2: Put the weighed Ti 2AlC powder is placed in a glass beaker, and then distilled water is sprayed into the powder raw material, and the powder is stirred while spraying distilled water until it presents a semi-wet state that is uniform, fluffy and non-agglomerated. Then it is slowly poured into a cylindrical steel mold, and the semi-wet mixed powder is flattened without applying downward pressure, and cold-pressed on a four-column universal hydraulic press. Slowly pressurize when pressing, control the press to slowly press down the mold pressure head to the height h mark of the prefabricated block, no need to hold the pressure, and then slowly demold it and place it in an 80°C electric blast drying oven for 24 hours to d...

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Abstract

The invention discloses an extrusion casting method of a controllable volume fraction Ti2AlCp / Al composite material, relates to a preparation method of a reinforcement prefabricated block, and belongs to the field of aluminum base composite materials. The invention solves the problem of difficult preparation of a particle reinforced aluminum base composite material prefabricated block, realizes the reinforcement content controllability, and proposes a brand new extrusion casting method of the controllable volume fraction Ti2AlCp / Al composite material. The preparation process comprises preparation of a reinforcement prefabricated block raw material, cold pressing formation of a prefabricated block, and extrusion casting preparation of a Ti2AlCp / Al aluminum base composite material. The method for preparing the reinforcement prefabricated block is simple in process, needs no complex adhesive screening process, is excellent in particle dispersibility of the prefabricated block, and is controllable in reinforcement content.

Description

technical field [0001] The invention belongs to the field of aluminum-based composite materials and is mainly applied to the preparation of particle-reinforced aluminum-based composite materials. Background technique [0002] Particle-reinforced aluminum matrix composites have high specific strength and specific modulus, low thermal expansion coefficient, good thermal conductivity, and have the advantages of simple preparation process and easy secondary processing. They are the current research and development focus of metal matrix composites. High-tech fields such as aviation, electronics, automobiles and advanced weapon systems have broad application prospects. Ti 2 AlC ternary compound is a new type of compound that has attracted much attention recently. It has high strength and high modulus, good electrical conductivity and processability, and has certain plasticity. It is an excellent candidate material for new particle reinforcements. The commonly used preparation me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/00C22C1/10C22C21/00
Inventor 张东方李惠李宜彬张新疆张璟伟
Owner 江苏华旺新材料有限公司
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