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A kind of wet-mixing preparation method of nickel-based high-temperature olefin alloy powder

A high-temperature alloy and olefin alloy technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of poor dispersion, easy to react with superalloy matrix elements, and affect the mechanical properties of the alloy, and achieve the effect of fine powder particle size

Inactive Publication Date: 2020-01-21
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the method of adding graphene to superalloys to prepare graphene / superalloy composite powders, it is not only necessary to solve the large density difference between superalloys and graphene, which is difficult to disperse, but also to prepare graphene / superalloy composite powders. A series of thermal processes such as chemical forming, these thermal process temperatures often exceed 1000 ° C, if the dispersion between graphene and superalloy powder is poor, it is easy to react with superalloy matrix elements at high temperature, and ultimately affect the mechanical properties of the alloy

Method used

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  • A kind of wet-mixing preparation method of nickel-based high-temperature olefin alloy powder
  • A kind of wet-mixing preparation method of nickel-based high-temperature olefin alloy powder
  • A kind of wet-mixing preparation method of nickel-based high-temperature olefin alloy powder

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Effect test

Embodiment 1

[0030] The powder superalloy was smelted in a ZG25 vacuum induction furnace to prepare the FGH96 powder superalloy master alloy ingot. Then, 20 kg of superalloy powder was prepared by argon atomization method (AA method), and the powder was sieved to obtain FGH96 superalloy powder with a particle size of -250 mesh. Graphene oxide nanosheets were prepared by redox method. 1g of graphene oxide nanosheets was divided into 2 parts on average, dissolved in 300ml of alcohol respectively, and the graphene oxide solution was ultrasonically treated with a cell pulverizer. Ultrasonic working time for 40 minutes. The graphene oxide solution after sonication was left to stand for 2 hours, and the excess alcohol on the upper part of the container was removed. Evenly divide the prepared 2kg of FGH96 into 10 parts, each with 200g of powder, add the powder into the graphene oxide solution, and use a mechanical stirrer to continuously stir. Fully stir the graphene oxide / superalloy mixed powd...

Embodiment 2

[0032]The ZG25 vacuum induction furnace was used to smelt the powder superalloy, and the U720 superalloy master alloy ingot was prepared. Then, 10 kg of superalloy powder was prepared by argon atomization method (AA method), and the powder was sieved to obtain U720 superalloy powder with a particle size of -300 mesh. Graphene oxide nanosheets were prepared by the redox method, and the graphene oxide nanosheets with a weight of 360g were divided into 6 parts on average, dissolved in 300ml alcohol respectively, and the graphene oxide solution was ultrasonically treated with a cell pulverizer, and the ultrasonic working time for 30 minutes. The graphene oxide solution after sonication was left to stand for 2 hours, and the excess alcohol on the upper part of the container was removed. The prepared 6kg U720 was evenly divided into 6 parts, each with 1kg powder, and the powder was added to the graphene oxide solution, and a mechanical stirrer was used to continuously stir. Fully ...

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Abstract

The invention proposes a method for preparing nickel-based high-temperature olefin alloy powder, which adopts a wet mixing method to prepare nickel-based high-temperature olefin alloy powder. Firstly, the graphene oxide flakes are selected and dissolved in water to prepare a certain amount of graphene oxide solution; then the superalloy powder prepared by argon atomization method (AA) or plasma rotating electrode method (PREP) is added to the graphene oxide solution In the process, ultrasonic vibration and stirring make graphene oxide flakes dispersed on the surface of superalloy powder particles; the mixed graphene oxide / superalloy powder is washed, filtered, and dried in an oven; finally, the dried graphene oxide / superalloy powder is The superalloy powder is put into a stainless steel sheath, vacuum degassed and heated to prepare graphene / superalloy composite powder.

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] With the further demand of the aviation industry for material performance, nickel-based composite materials are also widely developed and used. In recent decades, research on carbon materials has been a research hotspot at the forefront of science. Research on carbon materials as reinforcements for nickel-based superalloy composites is increasing. Graphene, as a kind of carbon material, is the toughest, most conductive and thermally conductive material discovered so far, and is known as a new generation of strategic materials. Graphene has excellent characteristics such as high carrier mobility, high current density, high strength, and high thermal conductivity, especially excellent mechanical properties, which are 2-3 orders of magnitude higher than ordinary metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04B22F1/00
CPCB22F9/04B22F1/068
Inventor 吉传波王晓峰邹金文杨杰肖程波张晓艳戴圣龙
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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