Coated cutting tool
US-2024287680-A1 · Aug 29, 2024 · US
Diamond coated tool
US9302327B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9302327-B2 |
| Application number | US-201013139799-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 8, 2010 |
| Priority date | Aug 11, 2009 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
The present invention provides a diamond coated tool which is resistant to exfoliation at an interface between a base material and a diamond layer. The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 μm and not more than 10 μm and an average length of roughness profile elements RSm of not less than 1 μm and not more than 100 μm, and that the diamond layer has a plurality of cavities extending from a portion bordering on the base material in a crystal growth direction.
First claim
Opening claim text (preview).
The invention claimed is: 1. A diamond coated tool comprising: a base material; and a diamond layer coating a surface of said base material, the surface of said base material having an arithmetic average roughness Ra of not less than 0.1 μm and not more than 10 μm and an average length of roughness profile elements RSm of not less than 1 μm and not more than 100 μm, said diamond layer having a plurality of cavities extending from a portion bordering on said base material in a crystal growth direction, wherein in a given section taken through said diamond coated tool at a plane including said base material and said diamond layer, the number of said cavities relative to a length of said base material is not less than 1×10 3 /cm and not more than 1×10 6 /cm, and wherein said cavities have a width of not less than 5 nm and not more than 200 nm relative to the crystal growth direction and a length of not less than 10 nm and not more than 1 μm in the crystal growth direction. 2. The diamond coated tool according to claim 1 , wherein said diamond layer is made of polycrystalline diamond. 3. The diamond coated tool according to claim 1 , wherein said diamond layer is formed by chemical vapor deposition process.
Assignees
Inventors
Classifications
- B23B27/148Primary
Composition of the cutting inserts · CPC title
polycrystalline [PCD] · CPC title
- C23C16/0227Primary
by cleaning or etching · CPC title
Diamond only · CPC title
applied by chemical vapour deposition [CVD] · CPC title
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Frequently asked questions
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- What does patent US9302327B2 cover?
- The present invention provides a diamond coated tool which is resistant to exfoliation at an interface between a base material and a diamond layer. The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roug…
- Who is the assignee on this patent?
- Yoshida Katsuhito, Yoshida Shigeru, Seki Yuichiro, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification B23B27/148. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 05 2016 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).