A polycrystalline diamond composite sheet with good thermal conductivity and its preparation method
A technology of polycrystalline diamond and thermal conductivity, applied in metal processing equipment, manufacturing tools, turning equipment, etc., can solve the problem of low thermal conductivity of polycrystalline diamond composite sheets, achieve excellent mechanical and thermal properties, and high Young's modulus And the effect of tensile strength and high hardness
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0036] The polycrystalline diamond compact sheet with good thermal conductivity in this embodiment includes a cemented carbide substrate and a polycrystalline diamond layer disposed on the cemented carbide substrate, and the polycrystalline diamond layer is composed of the following raw materials by weight: graphene cladding 80% diamond-coated fine powder, 10.5% of submicron diamond fine powder, 0.3% of carbon nanotubes, 0.2% of graphene and 9% of binder; It is composed of micropowders with four particle size distributions of ~12µm and 20~25µm, of which the particle size of 4~6µm accounts for 5% of the total graphene-coated diamond micropowder, and the particle size of 5~10µm accounts for the total graphene-coated diamond micropowder. 17% of the total amount of graphene-coated diamond micro-powders with a particle size of 8-12 µm, accounting for 28% of the total graphene-coated diamond micro-powder, and 20-25 µm particle size accounting for 50% of the total graphene-coated diam...
Embodiment 2
[0050] The polycrystalline diamond compact sheet with good thermal conductivity in this embodiment includes a cemented carbide substrate and a polycrystalline diamond layer disposed on the cemented carbide substrate, and the polycrystalline diamond layer is composed of the following raw materials by weight: graphene cladding 90% of diamond-coated micropowder, 5% of submicron diamond micropowder, 0.2% of carbon nanotubes, 0.1% of graphene and 4.7% of binder; the graphene-coated diamond micropowder includes particle sizes of 2-4µm, 5-10µm, 8 ~12µm, 20~25µm four particle size distribution micropowders, the weight percentages of the four particle size micropowders in the graphene-coated diamond micropowder are 15%, 15%, 25%, 45% respectively; the sub-micron diamond The particle size of the micropowder is 0.5-1.0 μm; the graphene in the raw material of the polycrystalline diamond layer is a graphene nanosheet with a thickness of 6-8 nm and a width of 5 μm; the carbon nanotube is a m...
Embodiment 3
[0063] The polycrystalline diamond compact sheet with good thermal conductivity of this embodiment includes a cemented carbide base and a polycrystalline diamond layer disposed on the cemented carbide base, and the polycrystalline diamond layer is composed of the following raw materials by weight: graphene cladding 85% of diamond-coated micropowder, 7.75% of submicron diamond micropowder, 0.25% of carbon nanotubes, 0.15% of graphene and 6.85% of binder; the graphene-coated diamond micropowder includes particle sizes of 2-4µm, 5-10µm, 8 ~12µm, 20~25µm four particle size distribution micropowders; the weight percentages of the four particle sizes in the graphene-coated diamond micropowder are 10%, 16%, 26.5%, 47.5% respectively; the submicron diamond The particle size of the micropowder is 0.5-1.0 μm; the graphene in the raw material of the polycrystalline diamond layer is a graphene nano-sheet with a thickness of 6-8 nm and a width of 5 μm; the carbon nanotubes are multi-walled ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More