A nano-oxide particle/nickel-based superalloy composite spherical powder for high-energy beam 3D printing and its preparation method

A nickel-based superalloy and nano-oxide technology, which is applied in the field of 3D printing manufacturing, can solve the problems affecting the forming quality of high-energy beam 3D printing, the easy agglomeration of nano-scale reinforced particles, and the reduction of the sphericity of powder particles, so as to achieve a simple and easy preparation method. line, excellent dispersion, good fluidity

Active Publication Date: 2021-08-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the long-term mixing of powder by high-energy ball milling will greatly reduce the sphericity of powder particles, resulting in a significant drop in powder fluidity, which seriously affects the forming quality of high-energy beam 3D printing; and it is difficult to completely solve the problem that nano-scale reinforced particles are easy to agglomerate, resulting in Agglomeration and segregation of nanoreinforced particles in finished products printed by high-energy beam 3D printing

Method used

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  • A nano-oxide particle/nickel-based superalloy composite spherical powder for high-energy beam 3D printing and its preparation method
  • A nano-oxide particle/nickel-based superalloy composite spherical powder for high-energy beam 3D printing and its preparation method

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Embodiment 1

[0028] A nano-Al for high energy beam 3D printing 2 o 3 / Ni-based superalloy composite spherical powder and preparation method thereof, taking Ni-based superalloy as 100% by mass, nanometer Al 2 o 3 Powder accounted for 1%; Nano Al 2 o 3 The particle size of the nickel-based superalloy powder is 40nm, and the particle size of the nickel-based superalloy powder is 50μm.

[0029] The nano-Al 2 o 3 / Ni-based superalloy composite powder preparation method:

[0030] Step 1: Dissolve 0.5% polyethylene glycol dispersion / adhesive in 5% ethanol solvent to form a dispersion solution, add 1% Al 2 o 3 Nano-scale reinforcement particles were added to the solution, and subjected to high-energy ultrasonic crushing and dispersion treatment for 10 minutes;

[0031] Step 2: ultrasonically agitating the dispersed liquid after crushing in step 1 for 30 minutes to form a suspension of nano-reinforced particles;

[0032] Step 3: adding spherical nickel-based superalloy powder to the suspe...

Embodiment 2

[0035] A Nano ThO for High Energy Beam 3D Printing 2 / Ni-based superalloy composite spherical powder and preparation method thereof, taking nickel-based superalloy powder as 100% by mass percentage, nanometer ThO 2 Powder is 2%; Nano ThO 2 The particle size of the nickel-based superalloy powder is 30nm, and the particle size of the nickel-based superalloy powder is 40μm.

[0036] The Nano ThO 2 / Ni-based superalloy composite powder preparation method:

[0037] Step 1: Dissolve 1% polyethylene glycol dispersing / adhesive agent in 10% ethanol solvent to form a dispersion solution, add nano-scale reinforcing particles into the solution, and perform high-energy ultrasonic crushing and dispersion treatment for 25 minutes;

[0038] Step 2: ultrasonically agitating the dispersed liquid after crushing in step 1 for 40 minutes to form a suspension of nano-reinforced particles;

[0039] Step 3: adding spherical nickel-based superalloy powder to the suspension of nano-reinforced parti...

Embodiment 3

[0042] A Nano Y for High Energy Beam 3D Printing 2 o 3 / Ni-based superalloy composite spherical powder and preparation method thereof, taking nickel-based superalloy powder as 100% by mass, Y 2 o 3 Powder is 3%; Nano Y 2 o 3 The particle size of the nickel-based superalloy powder is 50nm, and the particle size of the nickel-based superalloy powder is 20μm.

[0043] The Nano Y 2 o 3 / Ni-based superalloy composite powder preparation method:

[0044] Step 1: Dissolve 1% polyethylene glycol dispersing / adhesive agent in 10% ethanol solvent to form a dispersion solution, add nano-scale reinforcing particles into the solution, and perform high-energy ultrasonic crushing and dispersion treatment for 30 minutes;

[0045] Step 2: ultrasonically agitating the dispersed liquid after crushing in step 1 for 40 minutes to form a suspension of nano-reinforced particles;

[0046] Step 3: adding spherical nickel-based superalloy powder to the suspension of nano-reinforced particles obta...

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Abstract

The invention discloses a nano-oxide particle / nickel-based superalloy composite spherical powder for high-energy beam 3D printing, wherein nano-scale oxide reinforcement particles are distributed on the surface of micron-sized spherical nickel-based superalloy powder; the nickel-based superalloy The purity of the powder is above 99%, and the particle size is 20‑50 μm; the nanoscale oxide reinforcement particles are made of nano Y 2 o 3 , ThO 2 or Al 2 o 3 Powder, the particle size of the powder is 30-100nm, and the mass fraction added is 1-10%. This kind of composite spherical powder has narrow particle size distribution, high sphericity, and good fluidity, which meets the requirements of 3D printing technology. The nano-reinforced particles in the 3D printed finished material are distributed in a single particle, and the 3D printed finished parts have excellent performance. The invention also discloses a preparation method of nano-oxide particle / nickel-based superalloy composite spherical powder for high-energy beam 3D printing.

Description

technical field [0001] The invention belongs to the technical field of 3D printing and manufacturing, and in particular relates to a nano-oxide particle / nickel-based superalloy composite spherical powder for high-energy beam 3D printing and a preparation method thereof. Background technique [0002] Nickel-based superalloys are widely used in aerospace, aviation and other fields because of their excellent high-temperature service performance. Compared with traditional casting, mechanical cutting and other processing methods, high-energy beam 3D printing such as laser and electron beam can break through the limitations of complex space shapes and high-temperature forming conditions, and has developed into a high-precision, complex-shaped nickel-based superalloy aerospace parts. Main forming method. The 3D printing powder material is a key factor in determining the quality of 3D printing products, and determines the forming capability boundary of 3D printing technology. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B33Y70/10
CPCB33Y70/00B22F1/16
Inventor 汪涛吴小玉彭明媚聂云鹏
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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