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Method for adding mesoscopic-scale three-dimensional strengthening phase into metal

A technology of strengthening phase and metal, applied in metal processing equipment, metal material coating technology, additive manufacturing, etc., can solve the problems of easy introduction of impurities, difficulty in improving the distribution state of strengthening phase, low production efficiency, etc. Greatly enhance the toughening effect, the effect of improving the strength

Inactive Publication Date: 2019-01-01
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly ball milling and wet mixing methods for adding graphene or graphite flake reinforcement phase to metals, but both of them have the problems of low production efficiency and easy introduction of impurities, and it is difficult to improve the reinforcement phase in the metal matrix in the later stage of powder metallurgy. distribution status in

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  • Method for adding mesoscopic-scale three-dimensional strengthening phase into metal
  • Method for adding mesoscopic-scale three-dimensional strengthening phase into metal
  • Method for adding mesoscopic-scale three-dimensional strengthening phase into metal

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a metal matrix composite material added with a mesoscale three-dimensional strengthening phase, the steps of the method are as follows:

[0027] Step 1. Ultrasonic cleaning and drying of 100 g of nickel-based alloy powder with a powder particle size of 50-200 μm is carried out, and then transferred to a graphite crucible. The chemical composition and weight percentage of the nickel-based alloy are: Cr19.15%, Fe17.95% , Nb5.12%, Mo3.15%, Ti0.97%, Al0.48%, Co≤0.09, C≤0.05, the balance is Ni, the scanning electron microscope photo of nickel-based alloy powder is as follows figure 1 shown. Then put the crucible into the middle of the furnace tube of the plasma chemical vapor deposition vacuum device, and evacuate the device to not less than 1×10 -2 After Pa, methane gas is introduced, the flow rate of methane gas is 30sccm, the pressure in the vacuum speed control device is adjusted to 300Pa, and then the radio frequency source is turned on, the powe...

Embodiment 2

[0034] A method for preparing a metal matrix composite material added with a mesoscale three-dimensional strengthening phase, the steps of the method are as follows:

[0035] Step 1. Ultrasonic cleaning and drying of 100 g of nickel-based alloy powder with a powder particle size of 50-200 μm is carried out, and then transferred to a graphite crucible. The chemical composition and weight percentage of the nickel-based alloy are: Cr19.15%, Fe17.95% , Nb5.12%, Mo3.15%, Ti0.97%, Al0.48%, Co≤0.09, C≤0.05, and the balance is Ni. Then put the crucible into the middle of the furnace tube of the plasma chemical vapor deposition vacuum device, and evacuate the device to not less than 1×10 -2 After Pa, methane gas is introduced, the flow rate of methane gas is 30sccm, the pressure in the vacuum speed control device is adjusted to 300Pa, and then the radio frequency source is turned on. After the deposition, turn off the radio frequency source, stop feeding methane gas, feed argon gas, c...

Embodiment 3

[0040] A method for preparing a metal matrix composite material added with a mesoscale three-dimensional strengthening phase, the steps of the method are as follows:

[0041] Step 1. Ultrasonic cleaning and drying of 100 g of spherical nickel-based alloy powder with a powder particle size of 50-200 μm is carried out and then transferred to a graphite crucible. The chemical composition and weight percentage of the nickel-based alloy are: Cr19.15%, Fe17.95 %, Nb5.12%, Mo3.15%, Ti0.97%, Al0.48%, Co≤0.09, C≤0.05, and the balance is Ni. Then put the crucible into the middle of the furnace tube of the plasma chemical vapor deposition vacuum device, and evacuate the device to not less than 1×10 -2 After Pa, methane gas is introduced, the flow rate of methane gas is 30sccm, the pressure in the vacuum speed control device is adjusted to 300Pa, and then the radio frequency source is turned on, the power of the radio frequency source is 300W, and the temperature is raised to 750°C at the...

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Abstract

The invention provides a method for adding a mesoscopic-scale three-dimensional strengthening phase into metal. The method comprises the following steps: firstly, putting metal based alloy powder intoa plasma chemical vapor deposition vacuum device; introducing methane gas, and adjusting methane gas flow, pressure of the vacuum device, radio frequency power, heating temperature and deposition time to obtain graphite sheet / metal-based composite material powder with an in-situ grown three-dimensional graphite sheet; then carrying out compacting formation on the graphite sheet / metal-based composite material powder; finally, carrying out thermal treatment to prepare a graphite sheet / metal-based composite material. By adopting the method provided by the invention, the graphite sheet with a three-dimensional mesoscopic scale is uniformly dispersed in a metal matrix under the condition that the graphite sheet and the metal matrix have a good binding force, so that the problems that the graphite sheet is difficult to disperse uniformly in the metal matrix and the binding force is poor are solved and the aim of strengthening and toughening metal through the graphite sheet is realized. Themethod is used for preparing the three-dimensional mesoscopic-scale graphite sheet strengthened metal-based composite material, has a simple and efficient technology and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for adding a mesoscale three-dimensional reinforcement phase to metal, which belongs to the reinforcement preparation technology of metal-based materials. Background technique [0002] Metal matrix composites are composite materials based on metals and alloys, which are reinforced with high-performance reinforcing fibers, whiskers, and particles. Compared with traditional metals or alloys, metal matrix composites have the advantages of high specific strength, good wear resistance, good high temperature performance, corrosion resistance, oxidation resistance and good fatigue performance. [0003] By adjusting the distribution state of the reinforcing phase in the metal matrix, the comprehensive properties of metal matrix composites can be effectively improved, and a composite structure with more strengthening and toughening effects can be realized. Single-layer graphene or multi-layer graphene (graphite sheet) has exce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05B22F1/02C23C16/26C23C16/505B22F3/105B22F3/15B22F3/24B33Y10/00C22C19/05C22C9/00C22C14/00B22F1/16
CPCC22C1/05C22C9/00C22C14/00C22C19/056C23C16/26C23C16/4417C23C16/505B22F3/105B22F3/15B22F3/24B33Y10/00B22F2998/10B22F2003/248B22F2003/1051B22F10/00B22F1/16B22F10/36B22F10/64B22F10/28B22F10/20Y02P10/25
Inventor 陈冬生周海涛刘大博罗飞田野罗炳威祁洪飞
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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