Titanium or titanium alloy spherical powder with rare earth oxide distributed on the surface and preparation method thereof

A rare earth oxide, spherical powder technology, applied in the field of metal powder materials, achieves the effects of low preparation cost, high composition uniformity, and increased pressure difference

Active Publication Date: 2020-11-03
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is very little research and related process development on the use of rare earth metal alloying to improve powder properties, optimize powder preparation processes, and then regulate the microstructure and properties of 3D printed titanium or titanium alloys.

Method used

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  • Titanium or titanium alloy spherical powder with rare earth oxide distributed on the surface and preparation method thereof
  • Titanium or titanium alloy spherical powder with rare earth oxide distributed on the surface and preparation method thereof
  • Titanium or titanium alloy spherical powder with rare earth oxide distributed on the surface and preparation method thereof

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Effect test

Embodiment 1

[0030] In this embodiment, the TC4 titanium alloy spherical powder surface is diffusely distributed with flake Y with an equivalent diameter of 100nm to 1000nm and a thickness of 20nm to 50nm. 2 o 3 , the titanium alloy spherical powder is composed of the following elements by mass percentage: Y 0.32%, O 0.12%, Al 5.95%, V 4.20%, the total amount of other impurity elements C, H and N is not more than 0.1%, and the balance is Ti ; where Al and V are alloying elements.

[0031] The surface is diffusely distributed with flake Y 2 o 3 The preparation method of the TC4 titanium alloy spherical powder comprises the following steps:

[0032] Step 1, cleaning the rare earth metal Y of 0.06kg and the TC4 titanium alloy of 19.94kg respectively, and then mixing them to obtain mixed raw materials;

[0033] Step 2. Put the mixed raw materials obtained in Step 1 into the water-cooled copper crucible in the melting chamber of the vacuum induction melting gas atomization equipment, and th...

Embodiment 2

[0056] In this embodiment, the TC4 titanium alloy spherical powder surface is diffusely distributed with flake Nd with an equivalent diameter of 100nm to 1000nm and a thickness of 20nm to 50nm. 2 o 3 , the titanium alloy spherical powder is composed of the following elements by mass percentage: Nd 0.12%, O0.08%, Al 6.20%, V 4.16%, the total amount of other impurity elements C, H and N is not more than 0.1%, and the balance is Ti ; where Al and V are alloying elements.

[0057] The surface is diffusely distributed with flake Nd 2 o 3 The preparation method of the TC4 titanium alloy spherical powder comprises the following steps:

[0058] Step 1, the rare earth metal Nd of 0.02kg and the TC4 titanium alloy of 19.98kg are respectively cleaned, and then mixed to obtain mixed raw materials;

[0059] Step 2. Put the mixed raw materials obtained in Step 1 into the water-cooled copper crucible in the melting chamber of the vacuum induction melting gas atomization equipment, and th...

Embodiment 3

[0064] In this embodiment, the TC4 titanium alloy spherical powder surface is dispersedly distributed with flake Gd having an equivalent diameter of 100nm to 1000nm and a thickness of 20nm to 50nm. 2 o 3 , the titanium alloy spherical powder is composed of the following elements by mass percentage: Gd 0.29%, O 0.10%, Al 5.76%, V 3.84%, the total amount of other impurity elements C, H and N is not more than 0.1%, and the balance is Ti ; where Al and V are alloying elements.

[0065] The surface is diffusely distributed with flake Gd 2 o 3 The preparation method of the TC4 titanium alloy spherical powder comprises the following steps:

[0066] Step 1, the rare earth metal Gd of 0.06kg and the TC4 titanium alloy of 19.94kg are respectively cleaned and processed, and then mixed to obtain mixed raw materials;

[0067] Step 2. Put the mixed raw materials obtained in Step 1 into the water-cooled copper crucible in the melting chamber of the vacuum induction melting gas atomizatio...

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Abstract

The invention discloses a titanium or titanium alloy spherical powder with rare earth oxides distributed on the surface. The dispersed distribution on the surface of the powder is a plate-shaped rare earth oxide with an equivalent diameter of 100nm to 1000nm and a thickness of 20nm to 50nm. The formation of the rare earth oxide is changed. Improve the surface properties of the powder and the adhesion between the powders, reduce the bonding between the powders, reduce the number of satellite powders, improve the quality of the powders, and provide new raw material options for titanium or titanium alloy 3D printing. In addition, the present invention also provides a method for preparing the titanium or titanium alloy spherical powder, which uses titanium or titanium alloy and rare earth metals yttrium, neodymium, and gadolinium as raw materials, and controls the process of vacuum induction melting gas atomization powder parameter, which reduces the oxidation of rare earth metals before melting, improves the fluidity of the melt, increases the pressure difference between the melting chamber and the atomization chamber, and realizes the preparation of titanium or titanium alloy spherical powder with rare earth oxides on the surface. .

Description

technical field [0001] The invention belongs to the technical field of metal powder materials, in particular to a titanium or titanium alloy spherical powder with rare earth oxides distributed on the surface and a preparation method thereof. Background technique [0002] Titanium or titanium alloy 3D printing has very broad application prospects in aerospace, biomedical and automotive fields. At present, the two main types of titanium or titanium alloy 3D printing technologies are: powder feeding method and powder spreading method. Both methods use spherical titanium or titanium alloy spherical powder with good fluidity as raw material, and the performance of the powder raw material depends to a large extent. It affects the performance of titanium or titanium alloy 3D printed devices. The spherical titanium or titanium alloy spherical powder prepared by gas atomization is the most used in the field of 3D printing. However, the titanium or titanium alloy spherical powder pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F1/00C22C14/00B22F9/08B33Y70/10B33Y40/00
CPCB22F1/0003C22C14/00B22F9/082B33Y70/00B33Y40/00B22F2009/0848B22F2009/0844B22F2009/0824B22F1/16
Inventor 王利卿谈萍汤慧萍李增峰赵少阳殷京瓯沈垒
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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