TiB2-Ni-based metal-ceramic composite feed for thermal spraying and preparation method of TiB2-Ni-based metal-ceramic composite feed

A technology of ceramic composite and composite structure, applied in metal processing equipment, metal material coating process, coating and other directions, to achieve the effects of excellent fluidity, improved bonding strength and toughness, and high sphericity

Inactive Publication Date: 2018-08-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different from traditional preparation methods, the plasma spheroidization method can obtain powders with extremely high sphericity and fluidity. However, when plasma spheroidization is used to prepare high-performance sphericity powders, it has high requirements for the fluidity of the original powder. The original powder Often cannot pass through the plasma spheroidization system smoothly

Method used

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  • TiB2-Ni-based metal-ceramic composite feed for thermal spraying and preparation method of TiB2-Ni-based metal-ceramic composite feed
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  • TiB2-Ni-based metal-ceramic composite feed for thermal spraying and preparation method of TiB2-Ni-based metal-ceramic composite feed

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Effect test

Embodiment 1

[0053] This embodiment provides a kind of TiB for thermal spraying 2 - Ni-based metal-ceramic composite structure feeding material and preparation method thereof, the metal-ceramic nano-composite structure feeding material is made of TiB 2 It is prepared by combining spray drying and plasma spheroidization technology with a volume ratio of 1:1 with Ni-based alloy.

[0054] A kind of TiB for thermal spraying 2 -The preparation method of Ni base cermet composite structure feeding material, comprises the steps:

[0055] (1) Under an argon protective atmosphere, add TiB with a volume ratio of 1:1 to the stirring mill 2 powder and Ni-based alloy powder, then add industrial alcohol of 2 / 3 of the volume of the mixing tank as a process control agent, and add polyethylene glycol as a binder, wherein polyethylene glycol and mixed powder (TiB 2 Powder and Ni-based alloy powder, the same below) with a mass ratio of 1:100, finally add zirconia balls as grinding media, and then grind for...

Embodiment 2

[0061] This embodiment provides a kind of TiB for thermal spraying 2 - Ni-based metal-ceramic composite structure feeding material and preparation method thereof, the metal-ceramic nano-composite structure feeding material is made of TiB 2 It is prepared by combining spray drying and plasma spheroidization technology with a volume ratio of 1:1 with Ni-based alloy.

[0062] A kind of TiB for thermal spraying 2 -The preparation method of Ni base cermet composite structure feeding material, comprises the steps:

[0063] (1) Under an argon protective atmosphere, add TiB with a volume ratio of 1:1 to the stirring mill 2 Powder and Ni-based alloy powder, then add industrial alcohol of 2 / 3 of the volume of the mixing tank as a process control agent, add polyethylene glycol as a binder, wherein the mass ratio of polyethylene glycol to mixed powder is 10:100, and finally Add zirconia balls as the grinding medium, then grind for 4 hours at a speed of 800rpm to obtain the slurry of co...

Embodiment 3

[0069] This embodiment provides a kind of TiB for thermal spraying 2 - Ni-based metal-ceramic composite structure feeding material and preparation method thereof, the metal-ceramic nano-composite structure feeding material is made of TiB 2 It is prepared by combining spray drying and plasma spheroidization technology with a volume ratio of 1:1 with Ni-based alloy.

[0070] A kind of TiB for thermal spraying 2 -Ni base cermet composite structure feeding material and preparation method thereof, comprising the steps of:

[0071] (1) Under an argon protective atmosphere, add TiB with a volume ratio of 1:1 to the stirring mill 2 powder and Ni-based alloy powder, then add industrial alcohol of 2 / 3 of the volume of the mixing tank as a process control agent, add polyethylene glycol as a binder, wherein the mass ratio of polyethylene glycol to mixed powder is 20:100, and finally Add zirconia balls as the grinding medium, then grind for 4 hours at a speed of 800rpm to obtain the slu...

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Abstract

The invention discloses TiB2-Ni-based metal-ceramic composite feed for thermal spraying and a preparation method of the TiB2-Ni-based metal-ceramic composite feed. The preparation method comprises thefollowing steps: (1) in a protective atmosphere, adding TiB2 powder and Ni-based alloy powder into a stirring grinder, adding a process control agent, a binding agent and a grinding medium, and thencarrying out grinding, so as to obtain slurry of composite powder A; (2) carrying out spray granulation on the slurry of the composite powder A in a spray drying system, so as to obtain composite powder B; (3) carrying out heat preservation on the composite powder B in drying equipment, so as to obtain composite powder C; and (4) passing the composite powder C through a spheroidizing system, so asto obtain high-sphericity composite powder. The powder prepared through the preparation method disclosed by the invention is high in flowability and excellent in performance; the demand of thermal spraying equipment for the powder flowability can be met; the problem that nanometer metal-ceramic composite powder is hard to spray can be solved; and the improvement of the coating surface performancecan be facilitated.

Description

technical field [0001] The invention belongs to the field of cermet composite structure feeding for thermal spraying, in particular to a TiB for thermal spraying 2 -Ni-based cermet composite structure feeding material and preparation method thereof Background technique [0002] Titanium diboride (TiB 2 ) is a hard phase with excellent performance. It has the characteristics of ultra-high hardness (microhardness 34GPa), high melting point (2980°C), excellent resistance to high temperature oxidation (anti-oxidation temperature in air can reach 1000°C), and has excellent performance. Excellent wear resistance, high temperature resistance and oxidation resistance. TiB with hexagonal close-packed structure 2 Composed of ionic bonds and covalent bonds, it is the most stable compound among boron and titanium elements, showing good acid and alkali corrosion resistance and molten metal corrosion resistance. These excellent properties make TiB 2 Become the best reinforcing phase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/10B22F9/14B22F1/00C23C4/06
CPCC23C4/06B22F9/10B22F9/14B22F1/10
Inventor 曾德长邹永鸣邱兆国吴姚莎张友生
Owner SOUTH CHINA UNIV OF TECH
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