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Preparation method of refined-TiC-particle-enhanced titanium-based composite material

A titanium-based composite material and particle reinforcement technology, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc. Controlled effect of applied pressure

Pending Publication Date: 2020-09-15
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Subsequent treatment processes in carbon nanotube-reinforced titanium matrix composites currently reported include hot rolling and forging. Hot rolling and forging have problems such as difficult control of deformation and uneven structure.

Method used

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  • Preparation method of refined-TiC-particle-enhanced titanium-based composite material
  • Preparation method of refined-TiC-particle-enhanced titanium-based composite material
  • Preparation method of refined-TiC-particle-enhanced titanium-based composite material

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Embodiment 1

[0024] Embodiment 1: A kind of method of refinement TiC particle reinforced titanium-based composite material in this embodiment is carried out according to the following steps:

[0025] Step 1. Insulate 1g of carbon nanotubes at 300°C for 1h, cool to room temperature, take out, add 30ml of concentrated nitric acid, place in a hydrothermal reaction kettle, react at 150°C for 1h, cool to room temperature, take out, wash until neutral, and place in a vacuum Dry in a drying oven at 80°C for 6h.

[0026] Step 2: According to the weight ratio Ti:CNTs=98.5:1.5, add 40g of powder into the nodular ink tank, the ratio of ball to material is 1:5, the speed is 300r / min, add 30ml of absolute ethanol as the ball milling medium and mill for 4 hours, then use a vacuum of 60°C Dry in a drying oven for 10 hours, and then sieve through a 200-mesh sieve.

[0027] Step 3. Put the composite powder obtained in step 2 into a graphite mold of φ20×12, and obtain carbon nanotubes at a heating rate of ...

Embodiment 2

[0029] Embodiment 2: A kind of method of refinement TiC particle reinforced titanium-based composite material in this embodiment is carried out according to the following steps:

[0030] Step 1. Insulate 1g of carbon nanotubes at 400°C for 1h, cool to room temperature, take out, add 40ml of concentrated nitric acid and place in a hydrothermal reaction kettle, react at 180°C for 1h, cool to room temperature, take out, wash until neutral, and Dry in a vacuum oven at 80 °C for 6 h.

[0031] Step 2: According to the weight ratio Ti:CNTs=98.5:1.5, add 40g of powder into the nodular ink tank, the ratio of ball to material is 1:5, the speed is 200r / min, add 30ml of absolute ethanol as the ball milling medium and ball mill for 6h, then use a vacuum at 60°C Dry in a drying oven for 10 hours, and then sieve through a 200-mesh sieve.

[0032] Step 3. Put the composite powder obtained in step 2 into a graphite mold of φ20×12, and obtain carbon nanotubes at a heating rate of 100°C / min, a ...

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Abstract

The invention discloses a preparation method of a refined-TiC-particle-enhanced titanium-based composite material. In order to solve the problems that in a carbon-nano-tube-enhanced titanium-based composite material, along with increasing of the content of MWCNTs, both the proportion of a TiC enhanced phase and the grain size are increased, and consequently the mechanical property of the compositematerial is improved not obviously, a subsequent annealing process is adopted to achieve grain refinement, carbon solid solution strengthening and dispersion strengthening of TiC particles and residual MWCNTs, and the harness, abrasion resistance and yield strength of the composite material are further improved. The method comprises the specific steps: 1, carbon nano tubes are purified; 2, titanium powder and the purified carbon nano tubes are subjected to mechanical ball-milling according to a certain proportion, absolute ethyl alcohol is adopted as a ball-milling medium, and after ball-milling for a certain time, a mixture is taken out, subjected to vacuum drying and sieved; 3, the composite material is prepared through a low-temperature quick-discharge plasma sintering technology; and4, annealing treatment is conducted. According to the composite material prepared through the method, TiC enhancesome grains are fine, the interface bonding strength is high, and the comprehensive mechanical property is excellent.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotube-reinforced titanium-based composite materials, in particular to a method for in-situ synthesis of TiC-reinforced titanium-based composite materials and annealing to improve mechanical properties. Background technique [0002] Titanium-based composites are a composite material that has developed rapidly in recent years. Generally speaking, it has higher specific strength, specific stiffness, wear resistance, thermal stability and high temperature durability than corresponding titanium alloys. Among them, the in-situ synthesis method is to synthesize the reinforcing phase in the matrix in situ by adding elements and chemically reacting with the matrix. Its advantages lie in the firm combination of the matrix and the reinforcement, less pollution, easy processing, and low cost. Carbon nanotubes are an ideal carbon source for in situ synthesis of TiC particles due to their low density, high Y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F3/24B22F9/04C22C1/10C22C1/05C22C14/00C22F1/02C22F1/18C01B32/168
CPCB22F3/24B22F9/04B22F2003/248B22F2009/043C22C1/05C22C14/00C22F1/02C22F1/183C01B32/168Y02P10/25
Inventor 欧阳德来胡满银崔霞
Owner NANCHANG HANGKONG UNIVERSITY
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