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A kind of surface metallized diamond composite particle

A technology of diamond particles and composite particles, which is applied in diamond, metal material coating technology, vacuum evaporation plating, etc., can solve the problems of difficult diamond-impregnated tools and high cost, and achieve the effect of improving holding properties and effective utilization

Active Publication Date: 2022-03-04
JIANGSU FENGTAI TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it contains a large amount of precious metals, and the cost is too high, so it is difficult to apply to diamond impregnated tools

Method used

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  • A kind of surface metallized diamond composite particle
  • A kind of surface metallized diamond composite particle
  • A kind of surface metallized diamond composite particle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] With 40 / 45 mesh intensity as the diamond particle base material of D60 as the starting particle, cleaning and roughening (5wt% NaOH ultrasonic cleaning and then water washing; washing with 3wt% HCl to neutrality; adding 10wt% HNO 3Boil in medium for 10min, carry out roughening treatment, and wash to neutral), pass Ar and CH in the plasma etching reaction chamber 4 Perform plasma etching, the gas pressure of etching gas is 10Pa, the flow rate of Ar is 60sccm, CH 4 The flow rate is 12sccm; after etching, heat treatment is carried out at 700 ° C for 5 minutes; then the average particle size is 10 μm Ti alloy powder (28wt% Cu, 72wt% Ti) and the diamond particle substrate after the above-mentioned plasma etching treatment Mixed and placed in a quartz crucible, and placed in a vacuum chamber to evacuate, then heated to 750 ° C for 1 hour to deposit a layer of Ti-Cu alloy layer with a thickness of about 0.5 μm on the surface of the diamond particle substrate, and by XRD Anal...

Embodiment 2

[0028] With 40 / 45 mesh intensity as the diamond particle base material of D60 as the starting particle, cleaning and roughening (5wt% NaOH ultrasonic cleaning and then water washing; washing with 3wt% HCl to neutrality; adding 10wt% HNO 3 Boil in medium for 10min, carry out roughening treatment, and wash to neutral), pass Ar and CH in the plasma etching reaction chamber 4 Perform plasma etching, the gas pressure of etching gas is 10Pa, the flow rate of Ar is 60sccm, CH 4 The flow rate is 12sccm; heat treatment is carried out at 700° C. for 5 minutes after etching; then the average particle diameter is 10 μm Ti alloy powder (10wt% Cu, 90wt% Ti) and the diamond particle substrate after the above-mentioned plasma etching treatment Mixed and placed in a quartz crucible, and placed in a vacuum chamber to evacuate, then heated to 750 ° C for 1 hour to deposit a layer of Ti-Cu alloy layer with a thickness of about 0.5 μm on the surface of the diamond particle substrate, and by XRD ...

Embodiment 3

[0030] With 40 / 45 mesh intensity as the diamond particle base material of D60 as the starting particle, cleaning and roughening (5wt% NaOH ultrasonic cleaning and then water washing; washing with 3wt% HCl to neutrality; adding 10wt% HNO 3 Boil in medium for 10min, carry out roughening treatment, and wash to neutral), pass Ar and CH in the plasma etching reaction chamber 4 Perform plasma etching, the gas pressure of etching gas is 10Pa, the flow rate of Ar is 100sccm, CH 4 The flow rate is 20sccm; after etching, heat treatment is carried out at 750 ° C for 5 minutes; then the average particle size is 10 μm Ti alloy powder (25wt% Ni, 75wt% Ti) and the diamond particle substrate after the above-mentioned plasma etching treatment Mixed and placed in a quartz crucible, and placed in a vacuum chamber to evacuate, then heated to 750 ° C for 1 hour to deposit a layer of Ti-Ni alloy layer with a thickness of about 0.5 μm on the surface of the diamond particle substrate, and by XRD An...

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Abstract

The invention relates to a surface metallized diamond composite particle, which belongs to the technical field of surface coating. The surface metallized diamond composite particle of the present invention comprises a diamond particle base material processed by plasma etching, the surface of the diamond particle base material is formed with a Ti alloy layer containing primary TiC through an evaporation process, and the surface of the Ti alloy layer is coated with Fe-Cu pre-coated Alloy powder layer. The diamond composite particle of the present invention significantly improves the holding property of the impregnated diamond matrix to abrasive grains by forming metallurgical bonding and surface metallization, and can greatly improve the effective utilization rate of diamond particles when used as an impregnated diamond tool.

Description

technical field [0001] The invention relates to the technical field of surface coating, and more specifically, the invention relates to a surface metallized diamond composite particle for impregnated diamond tools. Background technique [0002] Impregnated diamond tools are the main type of diamond tools, including various drill bits and circular saw blades, etc., which are characterized by the distribution of diamond particles on the surface and inside of the metal or hard alloy matrix, because the matrix material is made of diamond particles randomly When the impregnation is wrapped, when the tool is working, the carcass material must be worn away first to make the diamond particles protrude from the surface of the carcass to work as a cutting edge. Due to the high interfacial energy between diamond and metal or alloy, the surface of diamond cannot be infiltrated by general metal or alloy, so that the cutting edge height of diamond in work is low, and the shedding rate is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/24C23C14/18C23C14/02C01B32/28
CPCC23C14/022C23C14/18C23C14/24C01B32/28
Inventor 邱瑜铭董书山
Owner JIANGSU FENGTAI TOOLS
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