Nanostructure-containing polycrystalline diamond, polycrystalline diamond composite sheet and preparation method thereof

A polycrystalline diamond and nanostructure technology, applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve the problems of lack of strong bonding, overcome the difficulties in the preparation process, improve the comprehensive mechanical properties of hardness and toughness, The effect of overcoming cleavage brittle fracture

Inactive Publication Date: 2019-09-13
姜文辉
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In nano-diamond aggregates, although nano-scale diamond particles are contained, there is a lack of strong bonding

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nanostructure-containing polycrystalline diamond, polycrystalline diamond composite sheet and preparation method thereof
  • Nanostructure-containing polycrystalline diamond, polycrystalline diamond composite sheet and preparation method thereof
  • Nanostructure-containing polycrystalline diamond, polycrystalline diamond composite sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0051] Example 1: Preparation of nanostructure-containing polycrystalline diamond

[0052] Commercially available Kabuna polytype nanostructured polycrystalline diamond particles and microscale single crystal diamond particles are used as raw materials for synthesizing polycrystalline diamond. The cabuna polytype nanostructured polycrystalline diamond particles are synthesized by the blast shock wave method, and they contain 99.0% to 99.5% (weight percent) of diamond, and have a nominal size of 10 microns and are in the form of lumps. Micron-scale single crystal diamond particles were synthesized by static HPHT method, and they contained 99.5 wt. % diamond with a nominal size of 10 microns and were in the form of lumps. The two diamond particles were mixed in a mass ratio of 1:1. These diamond particles are treated with high temperature alkali and acid solution to further remove impurities. High temperature alkali solution treatment is to mix diamond particles with sodium hy...

Example Embodiment

[0053] Example 2: Preparation of nanostructure-containing polycrystalline diamond compacts

[0054] Commercially available Kabuna polytype nanostructured polycrystalline diamond particles and microscale single crystal diamond particles are used as raw materials for synthesizing polycrystalline diamond. Kabuna polytype nano-structured polycrystalline diamond particles are synthesized by an explosion shock wave method, and they contain 99.0% to 99.5% (weight percent) of diamond, and have a nominal size of 10 microns and are in the form of lumps. Micron-scale single crystal diamond particles were synthesized by static HPHT method, and they contained 99.5 wt. % diamond with a nominal size of 10 microns and were in the form of lumps. These diamond particles are treated with high temperature alkali and acid solution to further remove impurities. High temperature alkali solution treatment is to mix diamond particles with sodium hydroxide (NaOH) in a mass ratio of 1:5, heat to 500°C ...

Example Embodiment

[0056] Example 3: Preparation of nanostructure-containing thermally stable polycrystalline diamond and nanostructure-containing thermally stable polycrystalline diamond compacts

[0057] In this example, the samples used in the test are the polycrystalline diamond containing nanostructures in Example 1 and the polycrystalline diamond compacts containing nanostructures in Example 2. The metal binder-cobalt is removed with a mixed acid. The volume composition of the mixed acid is: 25% nitric acid (concentration of 95wt.%) and 75% hydrochloric acid (concentration of 36wt.%), and the decobalt depth is about 0.2 mm. Prepared separately A thermally stable polycrystalline diamond containing nanostructures and a thermally stable polycrystalline diamond compact containing nanostructures are produced.

[0058] In the present invention, the preparation method of nanostructure-containing polycrystalline diamond and polycrystalline diamond composite sheet is similar to the preparation meth...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a nanostructure-containing polycrystalline diamond for cutting tools, grinding tools, drill tools and wear parts, a polycrystalline diamond composite sheet and a preparationmethod thereof. The polycrystalline diamond layer in the polycrystalline diamond or the polycrystalline diamond composite sheet is composed of continuous and bonded diamond components and a catalyticmaterial located in the gaps thereof, wherein the diamond component comprises a nanostructured polycrystal (polycrystalline) diamond particles, which are micron-sized and Carbonado-type nanostructuredpolycrystalline diamond particle raw materials prepared by an explosion method. The catalytic material located in the gaps may be partially or completely removed to enhance the thermal stability of the polycrystalline diamond or polycrystalline diamond composite sheet. The preparation method comprises sintering the diamond particles under the conditions of high temperature and high pressure withthe help of the catalytic material, wherein the diamond particles comprise the Carbonado-type nanostructured polycrystalline diamond particles.

Description

technical field [0001] The invention relates to a polycrystalline diamond containing nanostructures, a polycrystalline diamond composite sheet and a preparation method thereof for cutting tools, abrasive tools, drilling tools and wear-resistant parts. They are used in road and bridge construction, mechanical processing, Stone processing, mining, oil drilling and mining and other fields. Background technique [0002] Polycrystalline diamond (Polycrystalline Diamond, referred to as PCD) has been well known. It is a diamond sintered body composed of a large number of diamond particles with diamond-to-diamond bonding (that is, Diamond-to-Diamond, referred to as D-D bonding). The preparation of polycrystalline diamond is usually by sintering and bonding fine diamond particles together under high temperature and high pressure with the assistance of catalyst materials. The catalyst materials promote the formation of D-D bonds between diamond particles. The catalyst materials are co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B22F3/14B22F1/00B22F7/08C22C26/00B82Y40/00
CPCB22F3/14B22F7/08C22C26/00B82Y40/00B22F1/054
Inventor 姜文辉
Owner 姜文辉
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap