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Diamond coated with functionally graded coating

A functional gradient and diamond technology, applied in coating, metal material coating process, sputtering plating, etc., can solve the problems of high cost and difficult to meet the needs of industrial applications, so as to improve the utilization rate and facilitate the promotion of industrial applications , Improve the effect of sharpness and life

Active Publication Date: 2019-03-12
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 to meet the needs of industrial applications

Method used

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  • Diamond coated with functionally graded coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take by weighing 2000g particle size and be 40 / 45 order, the diamond base particle that intensity is D60, cleaning and roughening (5wt% NaOH ultrasonic cleaning is then water-washed; With 3wt% HCl cleaning and then water-washing to neutrality; Add 10wt% HNO 3 Boil in medium for 10min, carry out roughening treatment, and wash to neutral), adopt resistance heating evaporation process to deposit a layer of elemental Fe on the surface of diamond base particles, the weight of deposited Fe is 20g, and form a functional layer on the surface of diamond. The coated diamond particles are vacuum-dried and stored. Design an alloy system with a weight ratio of 65%Fe-25%Cu-5%Ni-5%Sn, and use water atomization process to produce 200kg of pre-alloyed powder with a particle size of 400 mesh, the oxygen content of the powder is less than 3000ppm, and the laser median The particle size d50 value is 13-17μm, and the bending strength of the powder sintered body is >1100MPa. Weigh 500g powd...

Embodiment 2

[0028] Take by weighing 2000g particle size and be 40 / 45 order, the diamond base particle that intensity is D60, cleaning and roughening (5wt% NaOH ultrasonic cleaning is then water-washed; With 3wt% HCl cleaning and then water-washing to neutrality; Add 10wt% HNO 3 Boil in medium for 10min, carry out coarsening treatment, and wash to neutral), adopt resistance heating evaporation process to deposit a layer of elemental Ti on the surface of diamond base particles, the weight of the deposited Ti is 10g, and form a primary functional layer on the surface of diamond. The coated diamond particles are vacuum-dried and stored. Weigh 500g of water atomized pre-alloyed powder with a weight ratio of 65%Fe-25%Cu-5%Ni-5%Sn, the powder particle size is 400 mesh, the oxygen content is 1100MPa, mix this alloy powder with 50g of alcohol solution of polyvinylpyrrolidone K90 with a mass concentration of 1%, and evenly coat it with a primary functional layer in the coating equipment The surfac...

Embodiment 3

[0030] Take by weighing 2000g particle size and be 40 / 45 order, the diamond base particle that intensity is D60, cleaning and roughening (5wt% NaOH ultrasonic cleaning is then water-washed; With 3wt% HCl cleaning and then water-washing to neutrality; Add 10wt% HNO 3 Boil in medium for 10 minutes, carry out roughening treatment, and wash to neutral), adopt electron beam heating evaporation process to deposit a layer of elemental Cr on the surface of diamond base particles, the weight of deposited Cr is 20g, and form a primary functional layer on the surface of diamond , the coated diamond particles are vacuum-dried and stored. Weigh 500g of water atomized pre-alloyed powder with a weight ratio of 65%Fe-25%Cu-5%Ni-5%Sn, the powder particle size is 400 mesh, the oxygen content is 1100MPa, mix this alloy powder with 50g of alcohol solution of polyvinylpyrrolidone K90 with a mass concentration of 1%, and evenly coat it with a primary functional layer in the coating equipment The s...

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Abstract

The invention relates to diamond coated with a functionally graded coating and belongs to the technical field of hard particle materials. The diamond coated with the functionally graded coating comprises a chemical bonding layer applied on the surface of diamond base particles, a metallurgical combining layer applied on the surface of the chemical bonding layer and a matrix transition connection layer covering the surface of the metallurgical combining layer, wherein the chemical bonding layer is formed by coating of carbide forming elements, the metallurgical combining layer is formed by cladding of Fe-Cu-Ni-Sn water atomized prealloyed powder, and the matrix transition connection layer is formed by cladding of Fe-Cu water atomized prealloyed powder or Fe-Cu-Sn water atomized prealloyed powder. The diamond forms good preset type holding through chemical bonding and soaking during sintering formation, direct contact holding of the matrix for the diamond in the diamond product is converted into holding of the matrix for a metal function layer, so that the holding feature, form and capacity of the matrix for the diamond are changed, the effective utilization rate of the diamond is greatly improved, and the sharpness and service life of a diamond tool are improved.

Description

technical field [0001] The present invention relates to the technical field of hard particle materials. More specifically, the present invention relates to a metal gradient functional material with three layers of different functions coated on the surface of a diamond single crystal, forming a chemical bonding layer and a metallurgical bond on the surface of the diamond in sequence. Layer, carcass transition connection layer, effectively improving the ability of the binder in the diamond product to consolidate and hold the diamond. Background technique [0002] Diamond tools with a metal matrix that are sintered using metal binders as the bonding material for diamond base particles account for most of the diamond tool products. However, due to the high interfacial energy between the diamond base particles and the metal or alloy, the diamond surface cannot be infiltrated by ordinary metals or alloys. The diamond base particles are only mechanically embedded in the metal matri...

Claims

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Application Information

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IPC IPC(8): B22F1/02B22F5/00B22F1/00C23C14/24C23C14/35C23C14/06C23C16/32C22C38/16C22C38/08
CPCB22F1/0003C22C38/008C22C38/08C22C38/16C23C14/0635C23C14/24C23C14/35C23C16/32B22F5/00B22F2005/001B22F1/17
Inventor 邱瑜铭董书山
Owner JIANGSU FENGTAI TOOLS