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A diamond composite coating tool and its preparation method

A composite coating and diamond technology, which is applied in the direction of metal material coating process, coating, gaseous chemical plating, etc., can solve the problems of diamond coating peeling off, affecting the service life of diamond coating tools, and complicated treatment process

Active Publication Date: 2020-02-18
FUNIK ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding force between the diamond coating and the cemented carbide in the existing diamond coating tools is weak, and the diamond coating is prone to fall off during use, which seriously affects the service life of the diamond coating tools
[0003] At present, researchers have proposed a variety of methods to enhance the bonding force between the diamond coating and the substrate, but this method has very strict requirements on the substrate during the preparation of the diamond coating or the pretreatment process is too complicated. Very cumbersome, it is difficult to guarantee the quality of diamond-coated tools

Method used

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  • A diamond composite coating tool and its preparation method
  • A diamond composite coating tool and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0028] A preparation method for a diamond composite coating cutter, comprising the following steps:

[0029] Prepare the seed crystal solution with diamond particles with a particle size of 5-10nm, silicon carbide powder with a particle size of 0.2-0.6μm, and water at a mass ratio of 1:30:1000, and mix the diamond particles with ultrasonic to obtain a diamond particle suspension liquid; the silicon carbide powder and the diamond particle suspension are mixed uniformly to obtain a seed crystal solution; the particle number concentration of the diamond particles in the diamond particle suspension is 10 16 ~10 19 / g;

[0030] For seeding, place the cemented carbide substrate in a seed crystal solution to ultrasonically seed crystals, form a diamond mixed seed crystal on the surface of the cemented carbide substrate, and then dry to obtain a cemented carbide substrate after seeding;

[0031] The diamond composite coating was deposited using the mixed gas of hydrogen, methane and...

Embodiment 2

[0033] A preparation method for a diamond composite coating cutter, comprising the following steps:

[0034] Prepare the diamond particles with a particle size of 5-10 nm in the seed crystal solution, 0.2-0.6 μm silicon carbide powder and water, weigh them according to a mass ratio of 1:30:1000, and mix the diamond particles with ultrasonic to obtain a diamond particle suspension; The silicon carbide powder and the diamond particle suspension are uniformly mixed to obtain a seed crystal solution; the particle number concentration of the diamond particles in the diamond particle suspension is 10 16 ~10 19 / g;

[0035] Seeding the cemented carbide substrate in a seed crystal solution for ultrasonic treatment, forming a diamond mixed seed crystal on the surface of the cemented carbide substrate, and obtaining the cemented carbide substrate after the seed crystal;

[0036]The diamond composite coating was deposited using the mixed gas of hydrogen, methane and tetramethylsilane a...

Embodiment 3

[0038] A preparation method for a diamond composite coating cutter, comprising the following steps:

[0039] Prepare the diamond particles with a particle size of 5-10 nm in the seed crystal solution, 0.2-0.6 μm silicon carbide powder and water, weigh them according to a mass ratio of 1:30:1000, and mix the diamond particles with ultrasonic to obtain a diamond particle suspension; The silicon carbide powder and the diamond particle suspension are uniformly mixed to obtain a seed crystal solution; the particle number concentration of the diamond particles in the diamond particle suspension is 10 16 ~10 19 / g;

[0040] The seed crystal first cleans and sandblasts the cemented carbide substrate in sequence, and then places the cemented carbide substrate in the seed crystal solution for ultrasonic treatment, forming a diamond mixed seed crystal on the surface of the cemented carbide substrate, and obtaining the seed crystal cemented carbide substrate;

[0041] The diamond compo...

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Abstract

The invention provides a diamond composite coating layer cutter and a preparation method thereof. The preparation method comprises the following steps: a hard alloy basal body is put in seed crystal solution for ultrasonic processing; diamond mixed seed crystals are formed on the surface of the hard alloy basal body; the seed crystal solution consists of diamond particles, silicon carbide powder and water; hydrogen, methane and tetramethylsilane mixed gas is used as a reaction gas source; and a chemical vapor deposition method is adopted to deposit a diamond composite coating layer on the surface of the hard alloy basal body with the diamond mixed seed crystals to obtain the diamond composite coating layer cutter. The invention further provides the diamond composite coating layer cutter prepared by the method; and the method can effectively improve the bonding force between the coating layer and the hard alloy basal body, and prolongs the service life of the cutter.

Description

technical field [0001] The invention belongs to the field of coated cutting tools, and in particular relates to a diamond composite coating cutting tool and a preparation method thereof. Background technique [0002] With the development of technology, the requirements for industrial tools are getting higher and higher, such as processing carbon fiber and high-silicon-aluminum materials, which require tools with extremely high wear resistance. Diamond-coated tools are gradually being used because of their good hardness and wear resistance. People pay attention. However, in the existing diamond-coated tools, the bonding force between the diamond coating and the cemented carbide is weak, and the diamond coating is prone to fall off during use, which seriously affects the service life of the diamond-coated tools. [0003] At present, researchers have proposed a variety of methods to enhance the bonding force between the diamond coating and the substrate, but this method has ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C16/27C23C16/02
CPCC23C16/0272C23C16/271
Inventor 许立马宁李丙文
Owner FUNIK ULTRAHARD MATERIAL