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

A technology of rare earth oxide and spherical powder, which is applied in the field of metal powder materials to achieve the effect of refining microstructure and mechanical properties, improving fluidity and increasing proportion

Active Publication Date: 2019-12-31
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • 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 surface and preparation method for titanium or titanium alloy spherical powder
  • Titanium or titanium alloy spherical powder with rare earth oxide distributed on surface and preparation method for titanium or titanium alloy spherical powder
  • Titanium or titanium alloy spherical powder with rare earth oxide distributed on surface and preparation method for titanium or titanium alloy spherical powder

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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 titanium or titanium alloy spherical powder with rare earth oxide distributed on the surface. Flaky rare earth oxide with the equivalent diameter being 100-1000nm and the thickness being 20-50nm is in dispersed distribution on the surface of the powder; and with formation of the rare earth oxide, the surface properties of the powder and the adhesion performance among the powder are changed, bonding among the powder is reduced, the quantity of satellite powder is reduced, the quality of the powder is improved, and a new raw material selection is provided for 3D printingof titanium or titanium alloy. In addition, the invention further provides a preparation method for the titanium or titanium alloy spherical powder. In the method, by using the titanium or titanium alloy and rare earth metals, including yttrium, neodymium and gadolinium, as raw materials and controlling technological parameters of a vacuum induction melting gas atomization powder preparation, oxidation of the rare earth metals before being unmolten is reduced, the fluidity of a melt is improved, a pressure difference between a smelting chamber and an atomization chamber is increased, and preparation of the titanium or titanium alloy spherical powder with the rare earth oxide distributed on the surface is realized.

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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IPC IPC(8): B22F1/02B22F1/00C22C14/00B22F9/08B33Y70/00B33Y40/00
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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