Single-crystal diamond and method of manufacturing the same
US-2024175167-A1 · May 30, 2024 · US
Composite sintered body
US10457606B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10457606-B2 |
| Application number | US-201515119973-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 16, 2015 |
| Priority date | Apr 30, 2014 |
| Publication date | Oct 29, 2019 |
| Grant date | Oct 29, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A composite sintered body includes a diamond phase and a non-diamond carbon phase. A non-diamond carbon phase occupancy rate is higher than 0% and not higher than 30%. The non-diamond carbon phase occupancy rate is a percentage of an area of the non-diamond carbon phase to a total area of one arbitrarily specified cross section of the composite sintered body. As a result, there is provided a high wear-resistant, high local wear-resistant and high chipping-resistant diamond-containing composite sintered body suitably used as a material for a wear-resistant tool, a cutting tool and the like.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composite sintered body comprising a diamond phase and a non-diamond carbon phase, a non-diamond carbon phase occupancy rate being not lower than 1% and not higher than 30%, the non-diamond carbon phase occupancy rate being a percentage of an area of the non-diamond carbon phase to a total area of one arbitrarily specified cross section of the composite sintered body, an average particle size of sintered diamond particles forming the diamond phase being not smaller than 50 nm and not larger than 800 nm, and an average particle size of sintered non-diamond carbon particles forming the non-diamond carbon phase being not smaller than 80 nm and not larger than 1300 nm, wherein the non-diamond carbon phase is a graphite phase. 2. The composite sintered body according to claim 1 , wherein a Knoop hardness of the composite sintered body is not lower than 50 GPa.
Assignees
Inventors
Classifications
with diamond bits {or cutting inserts} · CPC title
Cutting tools of which the bits or tips {or cutting inserts} are of special material · CPC title
Preparation (by using ultra-high pressure B01J3/06; by crystal growth C30B29/04) · CPC title
obtained from carbonaceous particles with or without other non-organic components · CPC title
Graphite · CPC title
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- What does patent US10457606B2 cover?
- A composite sintered body includes a diamond phase and a non-diamond carbon phase. A non-diamond carbon phase occupancy rate is higher than 0% and not higher than 30%. The non-diamond carbon phase occupancy rate is a percentage of an area of the non-diamond carbon phase to a total area of one arbitrarily specified cross section of the composite sintered body. As a result, there is provided a hi…
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification C01B32/25. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 29 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).