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Spherical tantalum powder, preparation thereof and application of spherical tantalum powder in 3D printing

A tantalum powder and spherical technology, which is applied in the field of metal powder preparation and spherical tantalum powder preparation, can solve the problems of high oxygen content, low strength, unsatisfactory particle size uniformity, etc., and achieves high spheroidization rate, excellent performance, The effect of improving the spheroidization rate

Active Publication Date: 2022-06-24
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the existing spherical Ta powder preparation process, such as spheroidization rate, unsatisfactory uniformity of particle size, low strength, and high oxygen content, the first purpose of the present invention is to provide a preparation method of spherical tantalum powder , aiming to improve the spheroidization rate, particle size uniformity and strength of spherical Ta powder

Method used

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  • Spherical tantalum powder, preparation thereof and application of spherical tantalum powder in 3D printing
  • Spherical tantalum powder, preparation thereof and application of spherical tantalum powder in 3D printing
  • Spherical tantalum powder, preparation thereof and application of spherical tantalum powder in 3D printing

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Embodiment 1

[0045] A preparation method of spherical tantalum powder, the method uses micron-scale irregular tantalum powder prepared by nano-reduction method as raw material, and performs plasma spheroidization treatment under 2L / min (2sccm) methane auxiliary gas to prepare irregular tantalum powder. Spherical tantalum powder.

[0046] The main parameters controlling the RF plasma spheroidization system include the following:

[0047] In the plasma spheroidization process, the pressure in the reactor is 14.7PSIA

[0048] The gate current set by the plasma spheroidization process is 0.45A

[0049] The plate voltage set by the plasma spheroidization process is 8.0KV

[0050] The plate current set by the plasma spheroidization process is 4.0A

[0051] The feeding speed set by the plasma spheroidization process is 8g / min

[0052] The argon sheath gas pressure set by the plasma spheroidization process is 90L / min

[0053] The central gas pressure of argon gas set by the plasma spheroidiza...

Embodiment 2

[0058] A preparation method of spherical tantalum powder, the method uses micron-scale irregular tantalum powder (same as Example 1) prepared by nano-reduction method as raw material, and carries out plasma spheroidization under the auxiliary gas of 2L / min acetylene, and the irregular The tantalum powder is prepared into spherical tantalum powder.

[0059] The main parameters controlling the RF plasma spheroidization system include the following:

[0060] In the plasma spheroidization process, the pressure in the reactor is 14.7PSIA

[0061] The gate current set by the plasma spheroidization process is 0.45A

[0062] The plate voltage set by the plasma spheroidization process is 8.0KV

[0063] The plate current set by the plasma spheroidization process is 4.0A

[0064] The feeding speed set by the plasma spheroidization process is 8g / min

[0065] The argon sheath gas pressure set by the plasma spheroidization process is 90L / min

[0066] The central gas pressure of argon g...

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Abstract

The invention relates to a preparation method of spherical tantalum powder, which is characterized in that tantalum powder is subjected to plasma spheroidizing treatment in a mixed gas containing a protective gas and an auxiliary gas, and the auxiliary gas is a C1-C4 hydrocarbon compound. The invention further provides the tantalum ball prepared through the method and application of the tantalum ball in 3D printing. Plasma spheroidizing treatment is innovatively carried out under carrier gas containing C1-C4 hydrocarbon compounds, combined control over components and concentration of the hydrocarbon compounds is further matched, synergy can be achieved accidentally, the spheroidizing rate and particle size distribution of the prepared particles can be improved accidentally, in-situ dispersion strengthening can be achieved, and the particle size distribution of the particles can be improved accidentally. The application requirements in the aspect of 3D printing are better met.

Description

technical field [0001] The invention belongs to the field of metal powder preparation, in particular to the field of preparation of spherical tantalum powder. Background technique [0002] Metal tantalum has good biocompatibility and has been more and more widely used in the biomedical field. However, as a biomedical material, traditional metal materials still have problems of metal implant-bone interface bonding and stress shielding. The problem of metal prosthesis-bone interface bonding is particularly prominent in artificial joint replacement. In the early stage of bioartificial joint implantation, its stability depends on the tight press-fit between the prosthesis and the autologous bone, while the long-term stability mainly depends on the osseointegration between the prosthesis-bone interface. The age of the patient, the state of the bone bed, the stability of the prosthesis press fit, and the surrounding stress state will all affect the healing of the prosthesis-bone ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F1/065B22F1/142B22F1/052B22F10/28B33Y70/00
CPCB22F9/14B22F10/28B33Y70/00Y02P10/25
Inventor 陈超张桃梅周科朝
Owner CENT SOUTH UNIV
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