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Rapid in-situ preparation method of CNTs (at) TC4 composite powder

An in-situ preparation and composite powder technology, applied in the direction of process efficiency improvement, coating, gaseous chemical plating, etc., can solve the problems of uneven catalyst particle size, unsuitable for large-scale promotion, expensive equipment cost, etc., to achieve cost Low, good scalability, low equipment requirements

Active Publication Date: 2021-10-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Catalyst attachment techniques such as precipitation deposition method, impregnation method, electroless plating, magnetron sputtering, etc. can effectively attach catalyst nanoparticles to the surface of metal powder, but these methods either have uneven catalyst particle size, long time period, or inconvenient operation. , expensive equipment and high cost, not suitable for large-scale promotion

Method used

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  • Rapid in-situ preparation method of CNTs (at) TC4 composite powder
  • Rapid in-situ preparation method of CNTs (at) TC4 composite powder

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Embodiment 1

[0022] A rapid in-situ preparation method of CNTs@TC4 composite powder, comprising the following steps:

[0023] (1) Surface treatment of TC4 powder: first place 10g of TC4 powder in deionized water for 5-10 minutes, then pour out the deionized water and put it in absolute ethanol for 5-10 minutes, repeat three times to finally get a surface without grease TC4 powder;

[0024] (2) Preparation of nano-catalyst particles on the surface of TC4 powder: configure 0.0025mol / L Fe(NO 3 ) 3 9H 2 O solution, the step The obtained TC4 powder is spread into an aluminum box placed in the electrophoresis tank as a cathode, and then the electrolyte solution is poured into the stainless steel anode, and the electrodeposition is performed after connecting the wires. Then, the Fe 3+ It is reduced to Fe elemental substance on the cathode and deposited on the surface of TC4 powder as the cathode, the voltage is 6V, the deposition time is 30min, ultrasonic dispersion is carried out every 5mi...

Embodiment 2

[0027] A rapid in-situ preparation method of CNTs@TC4 composite powder, comprising the following steps:

[0028] (1) Surface treatment of TC4 powder: first place 10g of TC4 powder in deionized water for 5-10 minutes, then pour out the deionized water and put it in absolute ethanol for 5-10 minutes, repeat three times to finally get a surface without grease TC4 powder;

[0029] (2) Preparation of nano-catalyst particles on the surface of TC4 powder: configure 0.0025mol / L Fe(NO 3 ) 3 9H 2 O solution, the step The obtained TC4 powder is spread into an aluminum box placed in the electrophoresis tank as a cathode, and then the electrolyte solution is poured into the stainless steel anode, and the electrodeposition is performed after connecting the wires. Then, the Fe 3+ It is reduced to Fe elemental substance on the cathode and deposited on the surface of TC4 powder as the cathode, the voltage is 8V, the deposition time is 20min, ultrasonic dispersion is performed every 5min;...

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Abstract

The invention discloses a rapid in-situ preparation method of CNTs (at) TC4 composite powder. The method comprises the following steps of attaching nano iron particles on the surface of TC4 powder through an electrophoretic deposition technology, and growing carbon nanotubes on the surface of the TC4 powder in situ in combination with a plasma enhanced chemical vapor deposition technology; carrying out deoiling and degreasing pretreatment on the TC4 powder, then preparing a ferric nitrate solution by taking deionized water as a solvent, flatly laying the degreased TC4 powder on an aluminum sheet serving as a cathode, putting the aluminum sheet into a container containing an electrolyte solution, carrying out electro-deposition so as to prepare a catalyst precursor for growing a carbon nanotube on the surface of the TC4 powder, finally, carrying out in-situ growth of the carbon nano tube by using a plasma enhanced chemical vapor deposition method. The carbon nanotubes prepared by the method are uniformly distributed and have a relatively high length-diameter ratio, so that the improvement of various properties of the subsequently prepared carbon nanotube reinforced titanium-based composite material is facilitated.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a rapid in-situ preparation method of CNTs@TC4 composite powder. Background technique [0002] Ti-6A1-4V (TC4) titanium alloy, due to its excellent comprehensive performance, has broad application prospects in aerospace, metallurgy, ships, automobiles, biomedicine and many other fields, and has been used as a wide range of matrix materials , and carbon nanotubes are considered ideal reinforcements in composites due to their excellent mechanical properties. Carbon nanotubes (CNTs) and titanium alloy particles to form a composite powder (CNTs@TC4 composite powder) is an important raw material for the preparation of carbon nano-reinforced titanium-based composites by current powder metallurgy, 3D printing and other methods. The new carbon nano-reinforced titanium-based composite material has higher specific strength and specific elastic modulus than traditio...

Claims

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Application Information

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IPC IPC(8): C23C16/26C23C16/44C23C16/50C23C16/02B22F1/02
CPCC23C16/26C23C16/50C23C16/4417C23C16/0227C23C16/0272Y02P10/25
Inventor 陈俊锋卢锐涵孙君伟梁庆津池海涛
Owner FUZHOU UNIV