Reinforcing phase-reinforced composite powder with functional layers for fusion technology, method of preparation and application thereof

A technology of composite powder and reinforcing phase, which is applied in coating, melt spraying, transportation and packaging, etc. It can solve the problems of reduced nucleation effect and easy agglomeration, and achieves good load transfer, improved oxidation resistance and hardness and the effect of wear resistance

Active Publication Date: 2022-04-19
HARBIN ENG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem that the existing nanoparticle powder mixing method is prone to agglomeration and reduce its nucleation effect, and provides a composite powder reinforced with a functional layer for fusion technology and its preparation method and application

Method used

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  • Reinforcing phase-reinforced composite powder with functional layers for fusion technology, method of preparation and application thereof
  • Reinforcing phase-reinforced composite powder with functional layers for fusion technology, method of preparation and application thereof
  • Reinforcing phase-reinforced composite powder with functional layers for fusion technology, method of preparation and application thereof

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specific Embodiment approach 1

[0033] Specific implementation mode 1: This embodiment is used in the fusion technology to strengthen the composite powder with the reinforcing phase of the functional layer, which is made of 96wt.% ~ 98wt.% metal-based powder as the matrix powder, and 4wt.% ~ 2wt.% has a functional layer structure The reinforced phase is composed of a doped phase, wherein the reinforced phase is a graphene nanosheet or a graphene oxide sheet with a sheet diameter of micron;

[0034] The preparation method of the reinforcing phase with a functional layer structure is realized according to the following steps:

[0035] Add non-metallic nanoparticles into the mixed solution containing nickel salt, ultrasonically disperse evenly to obtain a reaction solution, add the reinforcing phase treated with palladium chloride into the reaction solution, stir the reaction ultrasonically, and obtain a functional compound after washing and drying. Reinforcement phase of layer structure;

[0036] The reaction...

specific Embodiment approach 2

[0039] Embodiment 2: This embodiment differs from Embodiment 1 in that the metal-based powder is a spherical metal-based powder with a particle size of 100-300 mesh.

specific Embodiment approach 3

[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the metal-based powder is titanium-based alloy powder, nickel-based alloy powder, cobalt-based alloy powder, iron-based alloy powder, copper-based alloy powder, One or mixed powder of aluminum-based alloy powder.

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Abstract

A composite powder reinforced with a functional layer for fusion technology and its preparation method and application. The invention belongs to the field of composite materials. It solves the problem that the existing nanoparticle powder mixing method is prone to agglomeration and reduces its nucleation effect. The problem. The reinforcing phase reinforced composite powder with functional layer in the present invention is composed of 96wt.%-98wt.% metal base powder as matrix powder, and 4wt.%-2wt.% graphene material with functional layer as doping phase. The preparation method of the reinforcing phase with a functional layer: adding non-metallic nanoparticles into a mixed solution containing nickel salt to obtain a reaction solution, adding the reinforcing phase treated with palladium chloride into the reaction solution for reaction. In the invention, nanoparticles are introduced into the alloy powder through the medium action of the reinforcing phase, and the non-metallic nanoparticles have good compatibility with the alloy powder, and can be uniformly dispersed in the alloy powder.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a reinforced phase-reinforced composite powder with a functional layer structure and a preparation method and application thereof. Background technique [0002] During laser, electron beam, or plasma melting, the melting and solidification kinetics tend to lead to microstructures with large columnar grains and periodic cracks. It has been shown that such problems can be addressed by introducing controlled solidification nucleating nanoparticles during additive manufacturing. Therefore, how to introduce nanoparticles into alloy powder has become an urgent problem to be solved. Most of the existing methods use powder mixing to directly add nanoparticles into the alloy powder. Although this method is easy to operate, it also has great disadvantages. Due to the small size of nanoparticles, they are prone to agglomeration, which greatly reduces the nucleation effect. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/18B22F1/12B22F9/04C23C18/18C23C18/36C23C24/10C23C4/06
CPCB22F1/0003C23C18/36C23C18/1662C23C18/1666C23C18/1893B22F9/04C23C24/103C23C4/06B22F2009/043B22F1/17
Inventor 崔秀芳李大燕金国温鑫房永超张丹石磊李健万思敏张学润
Owner HARBIN ENG UNIV
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