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Ball milling preparation method for nickel-based high-temperature graphene alloy powder

A technology of superalloy and alkene alloy, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of difficult metal-based graphene composite materials, difficult to uniformly disperse graphene, low graphene density, etc., and achieve fine powder particle size, The effect of more uniform powder particle size and lower manufacturing cost

Inactive Publication Date: 2016-04-06
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The low density of graphene, poor dispersion performance, and the thermal stability of the graphene-metal matrix interface are all important factors restricting the research of graphene-metal composites. Therefore, it is difficult to obtain metal-based graphene composites by traditional melting methods.
Due to the large difference in density between graphene and nickel-based superalloys, it is difficult to disperse graphene evenly in superalloy powders by directly mixing graphene with superalloy powders

Method used

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  • Ball milling preparation method for nickel-based high-temperature graphene alloy powder
  • Ball milling preparation method for nickel-based high-temperature graphene alloy powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] FGH96 powder superalloy master alloy ingot was prepared by ZG25 vacuum induction melting furnace. Then the superalloy powder was prepared by argon atomization method (AA method), and the powder was sieved by SNC ultrasonic vibration sieving machine for 2 to 3 times to obtain FGH96 superalloy powder with a particle size of -200 mesh. Planetary ball milling was performed on the obtained superalloy powder with uniform particle size. The ball milling time was 16 hours, the ball-to-material ratio was 10:1, and the ball milling speed was 150r / min.

[0031] Graphene nanosheets were prepared by redox method. 1.5g graphene nanosheets were dissolved in 200mL alcohol, and the graphene solution was ultrasonically treated with a cell pulverizer. The ultrasonic working time was 40 minutes, and the ultrasonic frequency was vibration 2s, gap 5s.

[0032] Add the prepared 2kgFGH96 into the graphene solution, and keep stirring with a mechanical stirrer. After fully stirring the graphen...

Embodiment 2

[0035] A 500kg vacuum induction furnace was used to smelt the powder superalloy to prepare the FGH99 superalloy master alloy ingot. Then, the superalloy powder was prepared by argon atomization method (AA method), and the powder was sieved to obtain FGH99 superalloy powder with a particle size of -270 mesh. Planetary ball milling was performed on the obtained superalloy powder with uniform particle size, the ball milling time was 24 hours, the ball-to-material ratio was 10:1, and the ball milling speed was 200r / min.

[0036] Graphene nanosheets were prepared by a redox method. 2 g of graphene nanosheets was dissolved in 400 mL of alcohol, and the graphene solution was ultrasonically treated with a cell pulverizer for 40 minutes.

[0037] Add the prepared 5kgFGH96 into the graphene solution, and keep stirring with a mechanical stirrer. The graphene / superalloy mixed powder was fully stirred for 2 hours, washed with water for 3 times, and dried in a drying oven. Adjust the dryi...

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Abstract

The invention provides a preparation method for nickel-based high-temperature graphene alloy powder. A planetary ball milling method is adopted to prepare the nickel-based high-temperature graphene alloy powder. In order to solve the problems that graphene is small in density and poor in dispersing performance, and in the preparing process of a melt, an interface reaction is likely to happen, the planetary ball milling manner is adopted for the high-temperature alloy powder, a high-temperature alloy powder sheet of a laminated structure is prepared, and then, the laminated high-temperature alloy powder is added into a graphene solution to be continuously and mechanically stirred so as to enable the graphene to be evenly dispersed on the high-temperature alloy powder sheet; then, the graphene / high-temperature alloy powder sheet is washed and dried, and finally, the graphene / high-temperature alloy powder sheet is loaded in a stainless steel sheath to be subjected to vacuum heating and gas removing; and adsorbed gas of the surface of composite powder is removed, and the nickel-based high-temperature graphene alloy composite powder is prepared.

Description

technical field [0001] The invention relates to a method for preparing an alloy powder, in particular to a method for preparing a nickel-based high-temperature alkene alloy powder. Background technique [0002] Graphene has sp 2 The honeycomb-shaped quasi-two-dimensional C atomic crystal of hybrid orbitals was first isolated from graphite by A.K.Geim and K.S. Novoselo in 2004 and can exist stably. It is currently the thinnest material in the world with a thickness of one single atom. Graphene not only has excellent electrical properties (electron mobility as high as 200,000 crn at room temperature 2 V -1 S -1 ), light weight, good thermal conductivity (3000~5000Wm -1 K -1 ), large specific surface area (2630m 2 g -1 ), its Young's modulus (1100GPa) and fracture strength (125GPa) are also comparable to carbon nanotubes. [0003] Because graphene has high strength, high conductivity, and high specific surface area, it is expected to obtain high-performance composite ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/04B22F1/00
CPCB22F9/04B22F1/068
Inventor 吉传波邹金文王晓峰周磊肖程波张晓艳戴圣龙
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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