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In situ endogenous nano (tic-al 3 ti)/al porous composite material and preparation method thereof

A nanoporous, in-situ endogenous technology, applied in the field of preparation of porous materials, to achieve the effects of high hardness, improved wear resistance, and excellent ductility

Active Publication Date: 2021-01-05
杭州吉研纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the use of combustion synthesis reaction method for endogenous nano-TiC and Al 3 Ti-reinforced Al-based porous composites and their preparation methods have not been reported, especially under the condition of using multi-walled carbon nanotubes (MWCNTs) as carbon source and without the participation of additives such as pore-forming agents (TiC-Al 3 Preparation of Ti) / Al Porous Composite

Method used

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  • In situ endogenous nano (tic-al <sub>3</sub> ti)/al porous composite material and preparation method thereof
  • In situ endogenous nano (tic-al <sub>3</sub> ti)/al porous composite material and preparation method thereof
  • In situ endogenous nano (tic-al <sub>3</sub> ti)/al porous composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] A kind of in situ endogenous nanometer (TiC-Al 3 The preparation method of Ti) / Al porous composite material, comprises the following steps:

[0051] (1) Ultrasonic dispersion treatment of MWCNTs:

[0052] Step 1.1: Add 6.21g of MWCNTs into 2000ml of ethanol, and then stir in 60KHz ultrasonic wave for 4 hours at room temperature to disperse carbon nanotube clusters into a linear suspension. Among them, MWCNTs outer diameter: 5-30nm, length: 5-60μm, purity>95.0%.

[0053] (2) Preparation of MWCNTs-Ti-Al precursor powder:

[0054] Step 2.1: Wet mixing and drying of MWCNTs-Ti-Al: 13.99 g of Al powder with a particle size of 2000 mesh and a purity of >99.95% and 29.80 g of Ti powder with a particle size of 3000 mesh and a purity of >99.95% were added to the MWCNTs ethanol suspension middle. At room temperature, the ethanol solution of the MWCNTs-Ti-Al mixture was electromagnetically stirred for 3 hours at a rotational speed of 1000 r / min; then ultrasonically oscillated f...

Embodiment 2

[0066] A kind of in situ endogenous nanometer (TiC-Al 3 The preparation method of Ti) / Al porous composite material, comprises the following steps:

[0067] (1) Ultrasonic dispersion treatment of MWCNTs:

[0068] Step 1.1: Add 5.97g of MWCNTs into 1500ml of ethanol, and then stir in 60KHz ultrasonic wave for 3 hours at room temperature to disperse carbon nanotube clusters into a linear suspension. Among them, MWCNTs outer diameter: 5-30nm, length: 5-60μm, purity>95.0%.

[0069] (2) Preparation of MWCNTs-Ti-Al precursor powder:

[0070] Step 2.1: Wet mixing and drying of MWCNTs-Ti-Al: 10.59 g of Al powder with a particle size of 1600 mesh and a purity of >99.95% and 33.44 g of Ti powder with a particle size of 2500 mesh and a purity of >99.95% were added to the MWCNTs ethanol suspension middle. At room temperature, the ethanol solution of the MWCNTs-Ti-Al mixture was electromagnetically stirred for 5 hours at a rotational speed of 500 r / min; then ultrasonically oscillated fo...

Embodiment 3

[0082] A kind of in situ endogenous nanometer (TiC-Al 3 The preparation method of Ti) / Al porous composite material, comprises the following steps:

[0083] (1) Ultrasonic dispersion treatment of MWCNTs:

[0084] Step 1.1: Add 5.75g of MWCNTs into 1000ml of ethanol, and then stir in 20KHz ultrasonic wave for 4 hours at room temperature to disperse carbon nanotubes into a linear suspension. Among them, MWCNTs outer diameter: 5-30nm, length: 5-60μm, purity>95.0%.

[0085] (2) Preparation of MWCNTs-Ti-Al precursor powder:

[0086] Step 2.1: Wet mixing and drying of MWCNTs-Ti-Al: 7.44 g of Al powder with a particle size of 1200 mesh and a purity of >99.95% and 36.81 g of Ti powder with a particle size of 2000 mesh and a purity of >99.95% were added to the MWCNTs ethanol suspension middle. At room temperature, the ethanol solution of the MWCNTs-Ti-Al mixture was electromagnetically stirred for 1 hour at a rotational speed of 2000 r / min; then ultrasonically oscillated for 3 hours...

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Abstract

The invention discloses an in-situ endogenous nanometer (TiC-Al3Ti) / Al porous composite material and a preparation method thereof. The porous composite material comprises the following components of,in percentage by mass, 19-25% of Al, 35-60% of TiC and 20-40% of Al3Ti. The preparation method comprises the following steps of (1) carrying out ultrasonic dispersion on MWCNTs, (2), preparing MWCNTs-Ti-Al precursor powder, and (3), blank pressing, combustion synthesis and porous formation. The porous composite material combines the common advantages of porous ceramic material and porous metal material and has excellent performances such as low density and high hardness, pore structure has the function of saving lubricating oil, and the wear resistance can be greatly improved; meanwhile, sintering, reaction and porous formation are completed in one step, so that the preparation process is simple, the required heat energy is low, the reaction time is short, a pore-forming agent does not need to be added, and environmental pollution is avoided.

Description

technical field [0001] The present invention relates to the preparation method of porous material, relate in particular to an in-situ endogenous nanometer (TiC-Al 3 Ti) / Al porous composite material and its preparation method. Background technique [0002] Porous materials are composed of pores with a certain volume fraction as beneficial components and continuous homogeneous or heterogeneous matrix. Because of their pores with a certain pore size range, large specific surface area, and adsorption capacity, they can achieve filtration, Adsorption, separation, catalysis, sound insulation, shock resistance and other functions are widely used in chemical industry, metallurgy, medicine, biology and environmental protection and other fields. Among them, inorganic porous materials with wide application value currently mainly include ceramics and metals. Ceramic porous materials have excellent properties such as good stability, high temperature resistance, and corrosion resistance,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/11B22F3/14B22F3/03B22F3/10C22C29/10C22C30/00C22C29/00C22C1/08
CPCB22F3/03B22F3/1039B22F3/1118B22F3/14C22C29/005C22C29/067C22C29/10C22C30/00
Inventor 杨宏宇刘林邱丰舒世立陈靓瑜邵勇石凤健
Owner 杭州吉研纳米科技有限公司