Unlock instant, AI-driven research and patent intelligence for your innovation.

A metal-based nanocomposite powder material, preparation method and application thereof

A nano-composite, metal powder technology, used in metal processing equipment, additive processing, transportation and packaging to achieve the effect of promoting diffusion and transfer, high sphericity and good fluidity

Active Publication Date: 2021-07-13
PEKING UNIV
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can realize the deagglomeration of nanoparticles and the coating process of alloy powder in the liquid phase, the nanoparticles are easy to re-agglomerate on the surface of the alloy powder during the stirring, drying and sieving process of the liquid phase, and the prepared composite powder material In the alloy powder surface, there are large nanoparticle aggregates

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A metal-based nanocomposite powder material, preparation method and application thereof
  • A metal-based nanocomposite powder material, preparation method and application thereof
  • A metal-based nanocomposite powder material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0051] In a first exemplary embodiment of the present disclosure, a method for preparing a metal matrix nanocomposite powder material is provided.

[0052] figure 1 It is a flowchart of a method for preparing a metal-based nanocomposite powder material according to an embodiment of the present disclosure. figure 2 For such figure 1 Schematic diagram of the implementation of the preparation method of the metal-based nanocomposite powder material shown.

[0053] refer to figure 1 and figure 2 As shown, the preparation method of the metal-based nanocomposite powder material in this embodiment includes: step S11, step S12 and step S13.

[0054] In step S11, micron-scale spherical metal powder and nano-scale reinforcing phase powder are prepared.

[0055] In the step S11 , it includes: sieving the micron-sized spherical metal powder to obtain the micron-sized spherical metal powder with a particle size of 20 μm˜60 μm.

[0056] In an embodiment of the present disclosure, the...

no. 2 example

[0088] In a second exemplary embodiment of the present disclosure, a metal matrix nanocomposite powder material is provided, the metal matrix nanocomposite powder is prepared by the above preparation method.

[0089] The metal-based nanocomposite powder material is a composite material of micron-scale spherical metal powder and nano-scale strengthening phase powder, wherein the micron-scale spherical metal powder includes several spherical metal powder particles; the surface of the metal powder particles is evenly coated with non-agglomerated nano-scale strengthening phase powder particles.

[0090] In one embodiment, the tungsten-based composite powder prepared by the above preparation method is taken as an example.

[0091] In this embodiment, spherical tungsten powder with a particle size of 20 μm to 30 μm and La with a particle size of 40 nm 2 o 3 The powder is used as raw material, with 99% by mass of spherical tungsten powder, 1% of La 2 o 3The powder is the material...

no. 3 example

[0099] In the third exemplary embodiment of the present disclosure, a raw material for metal additive manufacturing, powder injection molding and other powder metallurgy is provided, which is prepared by any of the above-mentioned preparation methods or includes any of the above-mentioned metal-based Nanocomposite powder materials. Due to the good fluidity and high bulk density of the metal-based nanocomposite powder materials prepared by the above preparation method, they can be used as raw materials for metal additive manufacturing, powder injection molding or other powder metallurgy processes, and can solve the problem of high-energy ball milling in the preparation of composite powders. The technical problems of poor fluidity, easy introduction of impurities, and the difficulty of preparing composite powders uniformly coated with reinforcing phase particles without agglomeration by conventional coating technology.

[0100] To sum up, the present disclosure provides a metal-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

A metal-based nanocomposite powder material, a preparation method and its application, the preparation method comprising: preparing a micron-scale spherical metal powder and a nano-scale reinforcement phase powder and placing the two in a mixing tank according to a predetermined ratio for a mixing operation to obtain Pre-coated powder with preliminary coating effect; utilize high-energy mechanical dispersion equipment to process the pre-coated powder. The high-energy mechanical dispersion equipment includes a grinding chamber and a rotation speed of 10 4 Rotors with more than one revolution per minute use the high-speed rotation of the rotor and the airflow generated in the grinding chamber to drive the pre-coated powders to collide and shear each other, unravel the agglomeration of nanoparticles on the surface of the pre-coated powders, and obtain A metal-based nanocomposite powder material in which the surface of the metal powder particles is evenly coated with nano-scale reinforcement phase powder particles. The composite powder material has good fluidity, high bulk density, mature and stable process, is suitable for large-scale industrial production, and can be used in metal additive manufacturing, powder injection molding and other fields.

Description

technical field [0001] The disclosure belongs to the technical field of powder metallurgy and metal additive manufacturing, and relates to a metal-based nanocomposite powder material, a preparation method and an application thereof. Background technique [0002] Metal-based nanocomposites are new composite materials composed of metals and their alloys as the matrix and one or more nanoscale metal or non-metallic particles as the reinforcing phase. Compared with traditional metal matrix composites, the interfacial bonding force of metal matrix nanocomposites is stronger, and the distribution of nano-reinforced phases in the matrix is ​​more uniform, so this material can overcome some limitations of single materials or traditional metal matrix composites, It has higher specific strength, specific modulus and other properties. At present, metal-based nanocomposites represented by titanium carbide-reinforced titanium alloys, silicon carbide-reinforced aluminum alloys, and oxide...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F1/00B22F9/04B22F3/22B33Y70/10
CPCB22F9/04B22F3/225B33Y70/00B22F2009/043B22F1/052B22F1/065B22F1/16
Inventor 王道宽易新庞甲飞
Owner PEKING UNIV