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Preparation method for mixed powder of graphene and titanium alloy

A technology for mixing powder and titanium alloy, applied in the field of powder titanium alloy material, can solve the problems of easy agglomeration of graphene nanosheets, difficulty in uniform mixing of graphene and titanium alloy, etc., achieves simple operation method, optimizes interface characteristics, and avoids over-temperature The effect of oxidation

Active Publication Date: 2017-03-22
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that graphene nanosheets are easy to agglomerate, graphene and titanium alloy are difficult to mix uniformly, etc., and propose a process method combining ultrasonic dispersion and mechanical stirring to prepare graphene and titanium alloy mixed powder

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  • Preparation method for mixed powder of graphene and titanium alloy
  • Preparation method for mixed powder of graphene and titanium alloy
  • Preparation method for mixed powder of graphene and titanium alloy

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preparation example Construction

[0024] The preparation method comprises the following steps:

[0025] (1) Put the Φ(45-150)mm titanium alloy ingot or rod into the argon atomization powder making equipment, turn on the argon atomization powder making equipment to prepare spherical titanium alloy powder, and then transfer to the ultrasonic vibrating screen In the analyzer, after 2 to 3 times of vibrating sieving, the spherical titanium alloy powder with a particle size of 30 μm to 150 μm and an oxygen content of less than 1000 ppm is obtained.

[0026] (2) Graphene nanosheets were prepared by the redox method. Under the field emission scanning electron microscope, the graphene nanosheets were feathery and translucent, with typical wrinkled structure characteristics, such as figure 1 shown; then, accurately weigh 0.1-10% of the titanium alloy powder mass graphene nanosheets and add to the beaker filled with absolute ethanol, the electronic balance accuracy is 0.01g.

[0027] (3) Turn on the high-speed dispersi...

Embodiment 1

[0037] (1) Prepare 1# titanium alloy powder by using plasma rotating electrode atomization powder making equipment, and then sieve the prepared powder twice to obtain 750 g of 1# titanium alloy powder with a particle size of 100-150 μm;

[0038] (2) Add 3g of graphene nanosheets prepared by the redox method to 100ml-500ml of absolute ethanol, and use a high-speed disperser to stir and mix. The graphene solution is prepared by the cell pulverizer. The working time of the ultrasonic cell pulverizer is 40 minutes, and the working frequency is 2 seconds of vibration and 3 seconds of gap;

[0039] (3) Transfer the 1# titanium alloy powder obtained in step (1) and the graphene solution prepared in step (2) to the 500ml specification batching tank of the temperature-controlled mechanical stirring device, and after sealing, open the temperature-controlled mechanical stirring device for uniform Mix to prepare graphene and 1# titanium alloy mixed powder slurry, the stirring speed is 500...

Embodiment 2

[0042] (1) 2# titanium alloy powder was prepared by argon atomization powder making equipment, and the prepared powder was sieved twice to obtain 600 g of 2# titanium alloy powder with a particle size of 50 μm to 100 μm;

[0043] (2) Add 2g of graphene nanosheets prepared by the redox method to 100ml-500ml of absolute ethanol, and use a high-speed dispersing agitator for stirring and mixing treatment. The graphene solution is prepared by the cell pulverizer. The working time of the ultrasonic cell pulverizer is 40 minutes, and the working frequency is 2 seconds of vibration and 3 seconds of gap;

[0044] (3) Transfer the 2# titanium alloy powder obtained in step (1) and the graphene solution prepared in step (2) to the 500ml specification batching tank of the temperature-controlled mechanical stirring device respectively, and after sealing, open the temperature-controlled mechanical stirring device for uniform Mix to prepare graphene and 2# titanium alloy mixed powder slurry, th...

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Abstract

The invention belongs to the field of powder titanium alloy materials and relates to a preparation method for mixed powder of nanometer materials and titanium alloy, in particular to the preparation method for mixed powder of graphene and titanium alloy. Firstly, spherical titanium alloy powder is prepared by the method of argon atomization or plasma rotation electrode atomization; then, accurately weighed graphene nanosheets are added to absolute ethyl alcohol, dispersion treatment is conducted by a high-speed dispersion stirrer and an ultrasound cell pulverizer, and a graphene solution is prepared; finally, the spherical titanium alloy powder and the graphene solution are stirred and mixed in a quantitative burdening tin of a temperature-controlled mechanical stirring device, mixed powder slurry of the graphene and the titanium alloy is prepared, and the mixed powder of the graphene and the titanium alloy is obtained after drying treatment and vacuum degassing. According to the preparation method for the mixed powder of the graphene and the titanium alloy, the dispersion performance of the graphene nanosheets in the titanium alloy powder is improved, the operation method is easy, the technological parameters are accurately controlled, the preparation method is suitable for batch preparation of the mixed powder of the graphene and the titanium alloy, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the field of powdered titanium alloy materials, and relates to a method for preparing nanometer material and titanium alloy mixed powder, in particular to a method for preparing graphene and titanium alloy mixed powder. Background technique [0002] With the leapfrog development of advanced weapons and equipment and the progress of lightweight technology for large components, higher requirements are put forward for the comprehensive performance of titanium alloy materials. The performance of titanium alloys prepared by traditional technology has approached or reached the theoretical limit. Therefore, in recent years, the search for new transformative technologies to modify titanium alloys has attracted great attention from all over the world. [0003] Due to its excellent mechanical properties and physical and chemical properties, graphene has quickly become an ideal reinforcement for structural-functional integration materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08
CPCB22F1/0003B22F9/082B22F9/14
Inventor 弭光宝王旭东沙爱学张晓艳戴圣龙
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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