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Nano silicon carbide and nano cerium oxide synergetically enhanced metal matrix micro-nano powder and preparing method thereof

A technology of nano-silicon carbide powder and nano-cerium oxide, applied in the direction of coating, etc., to achieve good application prospects, improve wettability, and strong engineering practicability

Inactive Publication Date: 2014-07-02
JIANGSU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this invention is to solve the problem that the existing laser wear-resistant modification technology still lacks a high-quality metal-based micro-nano powder with high light absorption and anti-wear effects, and to invent a nano-silicon carbide and nano-oxidized Cerium synergistically enhanced high-absorbance anti-wear metal-based micro-nano powder and its preparation method provide a new powder material for the wider application of laser wear-resistant modification technology

Method used

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  • Nano silicon carbide and nano cerium oxide synergetically enhanced metal matrix micro-nano powder and preparing method thereof
  • Nano silicon carbide and nano cerium oxide synergetically enhanced metal matrix micro-nano powder and preparing method thereof

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example 1

[0038] The materials used in this embodiment: nanometer silicon carbide powder with an average particle size of 20nm and a mass fraction of 2.25%; nanometer cerium oxide powder with an average particle size of 20nm and a mass fraction of 3%; the micron metal powder is Al-Si alloy powder, The average particle size is 50μm, and the mass fraction is 94.75%. The metal-based micro-nano powder enhanced by nano-silicon carbide and nano-cerium oxide is prepared by the above method steps. The specific parameters are: the ethanol in the mixed solution of ethanol and water used in the nano suspension The volume ratio is 50%; the ball milling compound parameters are: the ball milling speed is 200 rpm, the ball-to-material ratio is 8:1, and the ball milling time is 1 hour. Observed by scanning electron microscope, the prepared micro-nano powder maintains the spherical characteristics of micron powder ( figure 1 ), the surface is covered with a large amount of nano silicon carbide powder and ...

example 2

[0040] The materials used in this example: nano silicon carbide powder with an average particle size of 10nm and a mass fraction of 1.5%; nano cerium oxide powder with an average particle size of 10nm and a mass fraction of 2%; the micron metal powder is Al-Si alloy powder with an average The particle size is 50μm, and the mass fraction is 96.5%; the metal-based micro-nano powder enhanced by nano-silicon carbide and nano-cerium oxide is prepared by the above method steps. The specific parameters are: the ethanol in the mixed solution of ethanol and water used in the nano suspension The volume ratio is 30%; the ball milling compound parameters are: the ball milling speed is 100 rpm, the ball-to-material ratio is 5:1, and the ball milling time is 0.5 hours. Observed by scanning electron microscope, in the prepared micro-nano powder, nano-silicon carbide powder and nano-cerium oxide powder are coated on the surface of micron metal particles with high dispersibility characteristics ...

example 3

[0042] The materials used in this example: nano silicon carbide powder with an average particle size of 30nm and a mass fraction of 3%; nano cerium oxide powder with an average particle size of 30nm and a mass fraction of 4%; the micron metal powder is Al-Si alloy powder with an average The particle size is 50μm, and the mass fraction is 93%. The metal-based micro-nano powder enhanced by nano-silicon carbide and nano-cerium oxide is prepared by using the above method steps. The specific parameters are: ethanol in the mixed solution of ethanol and water used in the nano suspension The volume ratio is 70%; the ball milling compound parameters are: the ball milling speed is 300 rpm, the ball-to-material ratio is 10:1, and the ball milling time is 1.5 hours. Observed by scanning electron microscope, in the prepared micro-nano powder, nano-silicon carbide powder and nano-cerium oxide powder are coated on the surface of micron metal particles with high dispersibility characteristics t...

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Abstract

A metal-based micro-nano powder synergistically reinforced by nano-silicon carbide and nano-cerium oxide and a preparation method thereof, characterized in that the metal-based micro-nano powder consists of 1.5-3% by mass percentage of nano-silicon carbide powder, 2-4% Nano cerium oxide powder and 93~96.5% micron metal powder, the sum of various components is 100%; the manufacturing method is to prepare the pre-prepared single-phase nano-silicon carbide suspension and single-phase nano-cerium oxide suspension Mixing and ball milling to obtain a silicon carbide / cerium oxide dual-phase nano-suspension, and then ball-milling and compounding the obtained suspension with the micron metal powder obtained from spheroidization pretreatment and drying to obtain the micro-nano powder with a core-shell structure of the present invention. The invention can make the micro-nano powder have good wear resistance and high laser absorption rate, and can meet the current mainstream technology of laser forming - the requirement of direct powder feeding laser forming technology to transport powder, and has strong engineering practicability and good application prospects.

Description

technical field [0001] The invention relates to a metal-based micro-nano powder and a preparation method thereof, in particular to a metal-based micro-nano powder for laser surface wear-resistant modification and a preparation method thereof, in particular to a synergistic Enhanced highly light-absorbing anti-wear metal-based micro-nano powder and a preparation method thereof. Background technique [0002] Compared with other surface wear-resistant modification technologies, laser surface wear-resistant technology has many advantages such as metallurgical bonding interface, fine structure, controllable composition, less thermal influence, etc., coupled with the high flexibility and high efficiency of laser processing , low pollution and easy realization of computer control and other optical processing characteristics, making it one of the surface wear-resistant modification technologies that has attracted much attention. However, the existing powders for laser surface wear-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/02B22F1/00
Inventor 袁晓明王宏宇金镜许瑞华庞婧黎向锋姜银方沈清朱林童
Owner JIANGSU UNIV
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