Nano ceramic metal composite powder for 3D printing and application

A 3D printing and metal composite technology, applied in metal processing equipment, transportation and packaging, additive processing, etc., can solve the problems of easy agglomeration of nano-ceramic particles, poor matrix interface bonding, poor wettability, etc., and achieve nano-ceramic phase distribution. The effect of uniformity, solving agglomeration and low cost

Active Publication Date: 2020-11-17
CENT SOUTH UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the fact that the currently prepared nano-ceramic metal composite powder is difficult to meet the requirements of 3D printing technology for powder sphericity, fluidity and particle size distribution, and during the preparation of nano-ceramic phase-reinforced metal matrix composites, nano-ceramic particles are easy to agglomerate and interface with the matrix. To solve the problem of poor bonding, the present invention proposes a nano-ceramic-metal composite powder for 3D printing and its application. Micron-sized ceramic particles are used as raw materials to prepare nano-ceramic-metal spherical composite powder, and nano-ceramic-reinforced composite powder is prepared by 3D printing technology. metal composite
In the process of 3D printing,

Method used

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  • Nano ceramic metal composite powder for 3D printing and application
  • Nano ceramic metal composite powder for 3D printing and application
  • Nano ceramic metal composite powder for 3D printing and application

Examples

Experimental program
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Example Embodiment

[0042] Example 1:

[0043] Nano-ceramic metal composite powder and its application for 3D printing to René104 nickel-based superalloy as the substrate, the average particle diameter of 2.5μm TiC ceramic phase particles are reinforced, the added mass percentage of 2.0%.

[0044] Particle size of the base material is a nickel-base superalloy René104 spherical powder of 15 ~ 53μm, the group of nickel-base superalloy René104 divided into: 20.6Co ~ 13Cr ~ 3.4Al ~ 3.9Ti ~ 3.8Mo ~ 2.1W ~ 2.4Ta ~ 0.9Nb ~ 0.05Zr ~ 0.03B ~ 0.04C ~ balance is Ni.

[0045] The 3D printing method for a metal composite powder and nano-ceramic application, the following steps:

[0046] (1) the first ratio of the average particle diameter of 2.5μm TiC particle partial René104 nickel-base superalloy powder are mixed (ratio 2: 3), then wet-milled using a high energy ball mill was added dry milling process, nano-ceramics obtained composite powder particles uniformly distributed;

[0047] (2) in an inert gas atmosphe...

Example Embodiment

[0060] Example 2:

[0061]Metal nano-ceramic composite powder according to the present invention is a method for 3D printing, using one of the Chinese patent (CN108480625A) based selective laser melting technique silicon carbide particle reinforced aluminum matrix composite material forming process, the preparation of spherical composite powder, and processing parameters using SLM Chinese Patent (CN108480625A) embodiment, the preparation of SiC / AlSi10Mg composites. include:

[0062] Selection of a spherical average particle size of 30μm AlSi10Mg powder as a base, the average particle size of 10μm SiC powder reinforcing particles, wherein the mass fraction of SiC powder of 10%, both at 99.9% purity, specific preparation steps are as follows:

[0063] (1) the first ratio of the average particle diameter of 10μm and the particles of SiC powder mixing portion AlSi10Mg (ratio 1: 2), then wet-milled using a high energy ball mill was added dry milling process to obtain a composite cera...

Example Embodiment

[0073] Example 3:

[0074] Nano-ceramic metal composite powder and its application for 3D printing to TC4 titanium alloy as a base, a mean particle size of 5μm TiB 2 It is reinforced with ceramic particles, the added mass percentage of 2.0%. The matrix material having a particle size of TC4 alloy spherical powder of 53 ~ 106μm.

[0075] The 3D printing method for a metal composite powder and nano-ceramic application, the following steps:

[0076] (1) the ratio of the first TiB 2 The ceramic particles and the mixing portion TC4 alloy powder (ratio 2: 3), then wet-milled using a high energy ball mill was added dry milling process, nano-composite powder to obtain a uniform distribution of ceramic particles;

[0077] (2) in an inert gas atmosphere, the step (1) to give a composite powder was placed in a plasma apparatus for the ball of the ball, and cooled to obtain spherical composite powder of nano ceramic particles are uniformly distributed;

[0078] (3) The step (2) obtained spher...

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Abstract

The invention provides nano ceramic metal composite powder for 3D printing and application. A metal material is used as a matrix, and ceramic particles are used as a reinforcing phase. One or more ceramic particles of micron-sized TiC, TiB2, WC, SiC, CrC, Al2O3, Y2O3 and TiO2 are used as raw materials, the mass percent of the added ceramic particles is 0.5-10.0%, through a specific ball milling process, plasma spheroidization, airflow classification and screening, the metal composite powder with high sphericity, good fluidity, narrow particle size range and uniformly distributed nano-ceramicsis obtained, and the high requirement of a 3D printing technology for powder is met; and a nano-ceramic reinforced metal composite material is prepared through the 3D printing technology. According tothe prepared metal composite material, nano ceramic phases are uniformly distributed, and the metal composite material has excellent mechanical properties. Micron-sized ceramic particles are adopted,uniform dispersion is achieved through nanocrystallization, and the cost is low; and parts in any complex shape can be integrally formed and prepared, and the material utilization rate is increased.

Description

technical field [0001] The invention provides a nano-ceramic-metal composite powder for 3D printing and its application, belonging to the technical field of metal-based composite materials and additive manufacturing. Background technique [0002] Ceramic reinforced metal matrix composites have the advantages of high specific strength, specific modulus, high temperature resistance, small thermal expansion coefficient, wear resistance, corrosion resistance, and good dimensional stability. Nano-ceramics reinforced metal matrix composites can maintain good toughness while improving mechanical properties such as strength and hardness. [0003] Additive Manufacturing (AM) technology is a technology that accumulates and superimposes materials point by point and layer by layer through the principle of discrete accumulation to form a three-dimensional entity. At present, there are three main types of metal additive manufacturing technologies: selected laser melting (SLM) technology,...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/105B33Y70/10B33Y10/00
CPCB22F1/0003B33Y70/10B33Y10/00B22F1/14Y02P10/25
Inventor 刘祖铭魏冰农必重吕学谦任亚科曹镔艾永康
Owner CENT SOUTH UNIV
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