Method for preparing carbon nanotube and aluminum borate whisker hybrid reinforced aluminum-matrix composite material

A technology of aluminum borate whiskers and carbon nanotubes, which is applied in the field of preparation of micron and nanofiber hybrid reinforced aluminum matrix composite materials, can solve the problems of difficult uniform distribution of reinforcing phases, poor interface bonding, and difficult dispersion of carbon nanotubes, etc. Excellent performance, good compression resistance, good interface bonding effect

Inactive Publication Date: 2010-11-03
HARBIN INST OF TECH
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Problems solved by technology

[0003] In order to solve the problems of poor performance, poor interfacial bonding and difficulty in uniform distribution of two reinforcement phases of carbon nanotubes and whiskers, the present invention provides a Preparation method of carbon nanotube and aluminum borate whisker hybrid reinforced aluminum matrix composite
[0005] The present invention adopts nickel-plated carbon nanotubes and aluminum borate whiskers to prepare the two evenly distributed, obtains a prefabricated block with good compression resistance, and solves the problems that the carbon n

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  • Method for preparing carbon nanotube and aluminum borate whisker hybrid reinforced aluminum-matrix composite material
  • Method for preparing carbon nanotube and aluminum borate whisker hybrid reinforced aluminum-matrix composite material
  • Method for preparing carbon nanotube and aluminum borate whisker hybrid reinforced aluminum-matrix composite material

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specific Embodiment approach 1

[0008] Specific Embodiment 1: In this embodiment, the preparation method of carbon nanotubes and aluminum borate whiskers hybrid reinforced aluminum matrix composite materials is carried out according to the following steps: 1. After pretreatment of carbon nanotubes and aluminum borate whiskers, wet mixing, wet mixing The mixing temperature is 80-100°C, wherein the weight ratio of carbon nanotubes and aluminum borate whiskers is 2-5: 34-40; 2. Pour the mixture in step 1 into the prefabricated block pressing mold, and then add the mixture unidirectionally Then pressurize the mixture in one direction within 5 to 10 minutes to a pressure of 3 to 5 MPa, and hold the pressure for 5 to 12 hours to obtain a prefabricated block; 3. Put the prefabricated block in a drying oven for drying, first at 60°C Conditional drying for 1.5 to 2.5 hours, then raise the temperature to 80°C for 1.5 to 2.5 hours, then raise the temperature to 95°C for 0.5 to 1.5 hours, then raise the temperature to 12...

specific Embodiment approach 2

[0018] Embodiment 2: This embodiment is different from Embodiment 1 in that: the wet mixing temperature in step 1 is 85-95°C. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0019] Embodiment 3: This embodiment is different from Embodiment 1 in that: the wet mixing temperature in step 1 is 85°C. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention relates to a method for preparing a carbon nanotube and aluminum borate whisker hybrid reinforced aluminum-matrix composite material, which relates to a method for preparing an aluminum-matrix composite material which is simultaneously reinforced by microfibers and nanofibers. The method solves the problem that the aluminum-matrix composite material prepared by the conventional method for preparing aluminum-matrix composite materials has poor performance, low interface bonding and difficult uniform distribution of two wild phases of carbon nanotubes and whiskers. The method comprises the following steps of: 1, mixing raw materials by a wet process; 2, preparing a prefabricated block; 3, drying the prefabricated block; 4, sintering the prefabricated block; and 5, casting molten aluminum alloy into a mould provided with the prefabricated block and applying pressure on the mould to obtain the carbon nanotube and aluminum borate whisker hybrid reinforced aluminum-matrix composite material. In the method, the two wide phases of the carbon nanotubes and the whiskers are uniformly distributed, and the carbon nanotube and aluminum borate whisker hybrid reinforced aluminum-matrix composite material prepared by the method has high performance and high interface bonding.

Description

technical field [0001] The invention relates to a preparation method of a micron and nanometer fiber hybrid reinforced aluminum matrix composite material. Background technique [0002] Due to the different properties of various reinforcing materials, hybrid composite materials complement each other, especially due to the hybrid effect, which will obviously improve or improve some properties of the original single reinforcing material, and at the same time greatly reduce the raw material cost of composite materials. Aluminum matrix composites are the most concerned type of materials among metal matrix composites. There are many preparation methods for hybrid aluminum matrix composites, including powder metallurgy, in-situ reaction composite method, squeeze casting method, low pressure infiltration method, stirring method, etc. It has been reported that hybrid reinforced aluminum matrix composites are superior to single reinforced composites in room temperature mechanical prop...

Claims

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Application Information

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IPC IPC(8): C22C47/12C22C101/22
Inventor 张学习钱明芳于天明李爱兰耿林
Owner HARBIN INST OF TECH
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