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A kind of spherical nickel powder and its preparation method and application

A nickel powder, spherical technology, applied in the field of spherical nickel powder and its preparation, can solve the problems of low sphericity and uniformity, limited degree of spheroidization of nickel powder, etc., to make up for poor thermal conductivity at high temperature, hinder deposition growth, ensure The effect of uniformity

Active Publication Date: 2022-04-15
WESTERN BAODE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a spherical nickel powder and its preparation method and application, so as to solve the problems of limited spheroidization degree, low sphericity and low uniformity of nickel powder in the prior art

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  • A kind of spherical nickel powder and its preparation method and application
  • A kind of spherical nickel powder and its preparation method and application
  • A kind of spherical nickel powder and its preparation method and application

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preparation example Construction

[0028] Based on this, reference figure 1 As shown, the embodiment of the present invention discloses a method of preparing spherical nickel powder, which mainly includes the steps of:

[0029] 101. The hierarchical nickel powder to be treated is added to a solution system containing a cationic surfactant, and the modified nickel powder is obtained.

[0030] In this step, nickel is limited due to its high temperature thermal conductivity difference, thereby greatly affecting its subsequent applications, so it is initially modified.

[0031] By adding the hierarchical nickestic powder to be treated, modified nickel powder can be obtained after cleaning, and the modified graphene can be achieved by electrostatic adsorption.

[0032] The above-described hierarchical nickel powder refers to a nickel powder after the airflow classification. After the gas flow is graded, the particle size distribution of the nickel powder is narrowed and can be prepared for subsequent spheroidization tre...

Embodiment 1

[0083] The cationic surfactant (silane coupling agent KH550) was added to ethanol, stirred for 10 min, configure a solution system containing a cationic surfactant; a solution system containing a cationic surfactant containing an electrolytic nickel powder in a configuration of a cationic surfactant. In the mixing of 30 min, the modification of the electrolytic nickel powder was completed, and the modified nickel powder was obtained after cleaning with ethanol solution; where the moisture of the cationic surfactant (silane coupling agent KH550) and nickel powder (electrolyte nickel powder) 1:10.

[0084] The modified nickel powder was added to the oxidized graphene dispersion at low speed stirring to obtain a modified nickel powder coated with graphene oxide. Among them, the mass ratio of the modified nickel powder in the oxide in graphene dispersion liquid is 2: 1000.

[0085] The oxidized graphene coated modified nickel powder was placed in a plasma gel device for spheroidization...

Embodiment 2

[0087] The cationic surfactant (silane coupling agent KH560) was added to ethanol, stirred for 15 min, configured to obtain a solution system containing a cationic surfactant; a solution system containing a cationic surfactant containing a cationic surfactant in a configuration of a cationic surfactant in a presence of a cationic surfactant in a cleaned 65 ° C. The mixture was stirred for 20 min, and the modification of carbonyl nickel powder was completed. After washing with ethanol solution, the modified nickel powder was obtained; wherein the mass ratio of the cationic surfactant (silane coupling kH560) and nickel powder (carbonyl nickel powder) was 2:10.

[0088] The modified nickel powder was added to the oxidized graphene dispersion at low speed stirring to obtain a modified nickel powder coated with graphene oxide. Among them, the mass ratio of the modified nickel powder in the oxide oxide dispersion liquid is 3: 1000.

[0089] The oxidized graphene coated modified nickel p...

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Abstract

The invention provides a spherical nickel powder and its preparation method and application. The method comprises: adding the graded nickel powder to be treated into a solution system containing a cationic surfactant, and obtaining modified nickel powder after cleaning; adding the graphene oxide dispersion to obtain graphene oxide-coated modified nickel powder; the graphene oxide-coated modified nickel powder is spheroidized by plasma spheroidization equipment to obtain spherical nickel powder. The invention realizes the modification of nickel powder by graphene oxide through the effect of electrostatic adsorption, and has high universal applicability to plasma spheroidization equipment. The introduction of graphene oxide effectively makes up for the problem of poor high-temperature thermal conductivity of nickel powder, thereby improving the Spheroidization degree and uniformity of nickel powder.

Description

Technical field [0001] The present invention relates to the field of metal powder material, and more particularly to a spherical nickel powder and a preparation method thereof. Background technique [0002] 3D printing process is a new type of printing technology, the metal powder is the most important ring in the 3D printing process, using spherical metal powder, the product is printed, the shrinkage is small, it is difficult to deform, and the mechanical properties are stable, and the traditional metal powder Compared to the performance of the product improved. [0003] The metal powder used in the 3D printing process, in addition to good plasticity, it is necessary to meet the high powder spheroidation rate, good sphericalness, and high uniformity. Nickel powder is a metal powder commonly used in a 3D printing process. However, since the high temperature mobility of nickel is low, the high temperature thermal conductivity is poor, resulting in a limited geoscopolity of the nic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/16B22F1/14B22F1/145B22F1/065
Inventor 任尚远李荣曹卜元刘高建李永利王苗
Owner WESTERN BAODE TECH CO LTD