Tantalum-niobium alloy powder and preparation method thereof

A technology of tantalum-niobium alloy and niobium alloy, which is applied in the field of tantalum-niobium alloy powder material and its preparation by laser additive manufacturing, can solve the problems of low density requirements and inapplicability of formed parts, and reduce the high-temperature dehydrogenation treatment process. , Improve product quality and ensure the effect of powder spheroidization rate

Pending Publication Date: 2021-12-28
CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this technical solution is used to prepare parts by additive manufacturing, because the powder is in the shape of a polyhedron, it is easy to have defects such as cavities and fine cracks on the surface of the formed part. However, medical implants do not require high density of the formed part, and even porous parts are more suitable for cells. Adhesion and growth, while in the preparation of conventional parts, high density and flat surface of the parts are required, so it is not suitable for conventional metal laser additive manufacturing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present invention will be further described below by taking the preparation of Ta60Nb40 alloy powder as an example.

[0042] Its preparation process comprises the following steps:

[0043] 1) Ingredients: master alloy is used for smelting, high-purity tantalum powder and niobium powder are used as raw materials, mixed powder of 60% tantalum and 40% niobium is prepared according to the alloy ratio, and the powder is melted by an arc melting furnace to prepare Ta60Nb40 tantalum-niobium alloy casting ingot; spare.

[0044] 2) Hydrogenation crushing and plasma spheroidization pulverization: Ta60Nb40 alloy ingots are put into the hydrogenation reaction kettle, and the reaction kettle is pumped to below 1pa by gas replacement, and argon gas is introduced, and the process is repeated for more than three times. Finally, the argon gas is extracted, the hydrogen gas valve is opened, the temperature of the reactor is raised, and hydrogen gas is introduced at the same time. At...

Embodiment 2

[0048] The present invention will be further described below by taking the preparation of Ta60Nb40 alloy powder as an example.

[0049] Its preparation process comprises the following steps:

[0050] 1) Ingredients: master alloy is used for smelting, high-purity tantalum powder and niobium powder are used as raw materials, mixed powder of 60% tantalum and 40% niobium is prepared according to the alloy ratio, and the powder is melted by an arc melting furnace to prepare Ta60Nb40 tantalum-niobium alloy casting ingot; spare.

[0051] 2) Hydrogenation crushing and plasma spheroidization pulverization: Ta60Nb40 alloy ingots are put into the hydrogenation reaction kettle, and the reaction kettle is pumped to below 1pa by gas replacement, and argon gas is introduced, and the process is repeated for more than three times. Finally, the argon gas is extracted, the hydrogen gas valve is opened, the temperature of the reactor is raised, and hydrogen gas is introduced at the same time. At...

Embodiment 3

[0055] The present invention will be further described below by taking the preparation of Ta65Nb35 alloy powder as an example.

[0056] Its preparation process comprises the following steps:

[0057] 1) Ingredients: Master alloy is used for smelting, and high-purity tantalum powder and niobium powder are used as raw materials. Mixed powder of 65% tantalum and 35% niobium is prepared according to the alloy ratio, and the powder is melted by an arc melting furnace to prepare Ta65Nb35 tantalum-niobium alloy casting ingot; spare.

[0058] 2) Hydrogenation crushing and plasma spheroidization pulverization: Ta65Nb35 alloy ingot is put into the hydrogenation reaction kettle, and the reaction kettle is pumped to below 1pa by gas replacement, and argon gas is introduced, and the process is repeated for more than three times. Finally, the argon gas is extracted, the hydrogen gas valve is opened, the temperature of the reactor is raised, and hydrogen gas is introduced at the same time. ...

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PUM

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Abstract

The invention discloses a tantalum-niobium alloy powder and a preparation method thereof. By aiming at the requirement of laser additive manufacturing, through component design optimization and preparation process optimization, hydrotreating and plasma spheroidizing technologies are organically combined, a tantalum-niobium alloy containing Ta with the mass percent being 40%-80% and Nb with the mass percent being 20%-60% is selected, the spherical tantalum-niobium alloy powder with the sphericity degree larger than or equal to 90% is prepared, and the requirement of laser additive manufacturing can be met.

Description

technical field [0001] The invention relates to the field of tantalum-niobium alloys, in particular to a tantalum-niobium alloy powder material which can be used for laser additive manufacturing and a preparation method thereof. [0002] technical background [0003] Additive manufacturing technology is a kind of rapid prototyping technology. It is a technology based on a three-dimensional model, using materials such as metal powder or plastic, to construct three-dimensional three-dimensional parts by scanning layer by layer and stacking layer by layer. This technology combines various disciplines such as CAD / CAM, optics, numerical control and material science, and has a wide range of applications. The main heat sources of metal additive manufacturing equipment are divided into laser and electron beam. [0004] In modern times where material science is increasingly developed, higher requirements are put forward for high-end metal materials, such as ultra-high-speed aircraft,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/02C22C27/02
CPCC22C27/02B22F9/023
Inventor 李晓庚曹玄扬周朝辉李杜
Owner CHANGSHA ADVANCED MATERIALS IND RES INST CO LTD
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