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Fluidized bed device for coating film on surface of diamond, method and product prepared through method

A surface coating and fluidized bed technology, applied in the direction of gaseous chemical plating, metal material coating process, coating, etc., can solve the difficulty of controlling the uniformity of the coating surface, the difficulty of covering the entire surface of powder materials, and the efficiency Low and other issues

Active Publication Date: 2016-10-05
宁波晨鑫维克工业科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After electroless copper plating on the surface of diamond powder, the chemical bond between diamond and copper is not well bonded, resulting in low bonding force
[0006] The magnetron sputtering method is used to deposit a metal layer or carbide layer on the diamond surface to improve the bonding force between diamond and metal. This method has high equipment cost, low efficiency, and it is difficult to control the uniformity of the coating surface, especially in powder. Material full surface coating
[0007] Diamond powder with excellent surface coating uniformity and excellent bonding performance between coating and diamond cannot be obtained by the above method, which seriously hinders its development.

Method used

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  • Fluidized bed device for coating film on surface of diamond, method and product prepared through method
  • Fluidized bed device for coating film on surface of diamond, method and product prepared through method
  • Fluidized bed device for coating film on surface of diamond, method and product prepared through method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0189] Embodiment 1 prepares the diamond 1 of surface coating coating

[0190] Use the fluidized bed device of diamond powder surface coating coating of the present invention, wherein heating element is molybdenum, the step of preparing the diamond of surface coating coating is as follows:

[0191] 1) Add 10nm diamond powder into the fluidized bed, and use the turbo screw lifter to adjust the gas guide rod so that it fits the mesh nozzle.

[0192] 2) Turn on the hydrogen mass flow meter, the hydrogen enters the atomic hydrogen generator through the outer ring gas pipe, and is heated by the tantalum heating wire, and the atomic hydrogen enters the fluidized bed from the side slit of the mesh nozzle.

[0193] 3) Hydrogen enters the fluidized bed through the central gas pipe and the mixing tank, and the diamond powder is fluidized by adjusting the mass flow meter. Heat the fluidized bed to 900°C, turn on the mass flow meter, and hydrogen and methane enter the fluidized bed throu...

Embodiment 2

[0198] Embodiment 2 prepares the diamond 2 of surface coating coating

[0199] Use the fluidized bed device of diamond powder surface coating coating of the present invention, wherein heating element is graphite, the step of preparing the diamond of surface coating coating is as follows:

[0200] 1) Add 10nm diamond powder into the fluidized bed, and use the turbo screw lifter to adjust the gas guide rod so that it fits the mesh nozzle.

[0201] 2) Turn on the hydrogen mass flow meter, the hydrogen enters the atomic hydrogen generator through the outer ring gas pipe, and is heated by the tantalum heating wire, and the atomic hydrogen enters the fluidized bed from the side slit of the mesh nozzle. Hydrogen enters the fluidized bed through the central gas pipe and mixing tank, and the diamond powder is fluidized by adjusting the mass flow meter.

[0202] 3) Heat the fluidized bed to 1000°C, turn on the mass flow meter, and hydrogen and methane enter the fluidized bed through th...

Embodiment 3

[0206] Embodiment 3 prepares the diamond 3 of surface coating coating

[0207] Use the fluidized bed device of diamond powder surface coating coating of the present invention, wherein heating element is molybdenum, the step of preparing the diamond of surface coating coating is as follows:

[0208] 1) Add 10nm diamond powder into the fluidized bed, and use the turbo screw lifter to adjust the gas guide rod so that it fits the mesh nozzle.

[0209] 2) Turn on the hydrogen mass flow meter, the hydrogen enters the atomic hydrogen generator through the outer ring gas pipe, and is heated by the tantalum heating wire, and the atomic hydrogen enters the fluidized bed from the side slit of the mesh nozzle. Hydrogen enters the fluidized bed through the central gas pipe and mixing tank, and the diamond powder is fluidized by adjusting the mass flow meter.

[0210] 3) Heat the fluidized bed to 1050°C, turn on the mass flow meter, and hydrogen and methane enter the fluidized bed through ...

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Abstract

The invention relates to a fluidized bed device for coating a film on the surface of diamond and particularly discloses a fluidized bed device. The fluidized bed device comprises a fluidized bed, a raw material air source and an atomic hydrogen generating device. The invention further discloses a method for coating a film on the surface of diamond powder through the fluidized bed device and diamond prepared through the method, and the surface of the diamond is coated with the film. The diamond prepared through the method is low in graphitization degree, uniform in coating layer and controllable in diamond powder particle size.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a fluidized bed device and method for coating the surface of diamond powder. Background technique [0002] Diamond powder is the hardest material in industrial production, and its hardness characteristics are usually used as processing and grinding materials widely. Many of its excellent properties have been gradually discovered and excavated, such as high thermal conductivity at room temperature, extremely low thermal expansion coefficient, low friction coefficient, good chemical stability, large band gap, and high sound propagation speed. It has a broad application market in the fields of electronic industry, mechanical processing, geological drilling and mining industry. [0003] However, when diamond powder is processed or applied at high temperature, it is prone to graphitization, which will greatly reduce its mechanical strength, so it needs to be coated on its s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/442
Inventor 戴丹江南马付根褚伍波白华吕继磊虞锦洪
Owner 宁波晨鑫维克工业科技有限公司
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