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A kind of preparation method of graphene and titanium alloy composite powder ball milling

A composite powder and titanium alloy technology, which is applied in the field of powder titanium alloy materials, can solve the problems that graphene is difficult to uniformly disperse and interface bonding is not good, and achieve the effects of improving interface bonding, avoiding over-temperature oxidation, and controlling precise process parameters

Active Publication Date: 2019-06-28
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to propose a method for preparing graphene and titanium alloy composite powder by ball milling for the problem that graphene is difficult to disperse uniformly in titanium alloy powder and the interface is not well bonded

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  • A kind of preparation method of graphene and titanium alloy composite powder ball milling
  • A kind of preparation method of graphene and titanium alloy composite powder ball milling
  • A kind of preparation method of graphene and titanium alloy composite powder ball milling

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preparation example Construction

[0023] The preparation method comprises the following steps:

[0024] (1) Accurately weigh 0.1% to 10% of the mass of titanium alloy powder and add graphene oxide nanosheets into a beaker filled with absolute ethanol. The accuracy of the electronic balance is 0.01g; use a high-speed mechanical stirrer to stir, the stirrer The working time is 20min to 30min, the speed is 4000r / min to 6000r / min, and then ultrasonic dispersion treatment is carried out with an ultrasonic cell pulverizer to prepare a solution with relatively uniform dispersion of graphene oxide. The working time of the ultrasonic cell pulverizer is 30min to 40min, The working frequency is vibration 2s, gap 3s;

[0025] (2) Mix the titanium alloy powder with relatively uniform particle size and the graphene oxide solution obtained in step (1) and put it into the quantitative agate ball milling tank of the omnidirectional planetary ball milling equipment, and add an appropriate amount of absolute ethanol to the ball ...

Embodiment 1

[0034] Add 5.0 g of feathery, translucent graphene oxide nanosheets prepared by the redox method to a beaker of 500 ml of absolute ethanol, and stir with a high-speed mechanical stirrer. The stirring time is 20 min, and the rotation speed is 5000 r / min, and then use an ultrasonic cell pulverizer to carry out ultrasonic dispersion treatment to prepare a solution with relatively uniform dispersion of graphene oxide. The working time of the ultrasonic cell pulverizer is 40min.

[0035] Mix 995g of titanium alloy powder with a particle size of 53 μm to 106 μm with the above-mentioned graphene oxide solution and put it into the quantitative agate ball milling tank of the omnidirectional planetary ball milling equipment, and add an appropriate amount of absolute ethanol to the ball milling tank to make the balls and materials The total volume with absolute ethanol is less than 2 / 3 of the volume of the ball milling tank. After sealing, open the ball milling equipment for ball milling...

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Abstract

The invention belongs to the field of powder titanium alloy materials, and relates to a nano material and titanium alloy composite powder preparing method, in particular to a graphene and titanium alloy composite powder ball milling preparing method. Firstly, an oxidized graphene nano sheet is added in absolute ethyl alcohol, a high-speed mechanical stirrer and an ultrasonic cell pulverizer are adopted for scattering treatment, and an oxidized graphene solution is prepared; then titanium alloy powder and the oxidized graphene solution are arranged in all-direction planet ball milling equipmentto be subjected to controlled-temperature ball milling mixing; then, obtained oxidized graphene and titanium alloy powder muddy liquid is subjected to low-speed continuous stirring till oxidized graphene and titanium alloy composite powder slurry is formed; and after drying treatment, the graphene and titanium alloy composite powder is obtained. By means of the method, good interface bonding is formed between graphene and titanium alloy powder, and dispersibility of the graphene in the titanium alloy powder is greatly improved.

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 composite powder, in particular to a method for preparing graphene and titanium alloy composite powder by ball milling. Background technique [0002] With the leapfrog development of advanced weapons and equipment such as aero-engines, higher requirements are put forward for the comprehensive performance of titanium alloy materials. The performance of titanium alloy prepared by traditional technology has approached or reached the limit, and the search for new transformative technology to modify titanium alloy has attracted great attention from all over the world. Due to its excellent mechanical properties and physical and chemical properties, graphene has quickly become an ideal reinforcement for structural-functional integration materials, which provides a new idea for the development of titanium alloy ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04B22F1/00
Inventor 弭光宝黄旭曹京霞张晓艳
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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