Hard coating
US-2018073124-A1 · Mar 15, 2018 · US
Cutting tool
US11033969B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11033969-B2 |
| Application number | US-201916636521-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 26, 2019 |
| Priority date | Aug 24, 2018 |
| Publication date | Jun 15, 2021 |
| Grant date | Jun 15, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A cutting tool includes a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of Al x Cr (1-x) N, the layer B being composed of Al y Ti (1-y) N, the layer A being composed of a domain region and a matrix region, the domain region having a composition ratio of Cr larger than that of Cr of the matrix region, wherein x has a range of 0.5≤x≤0.8 and y has a range of 0.5≤y≤0.7.
First claim
Opening claim text (preview).
The invention claimed is: 1. A cutting tool comprising a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of Al x Cr (1-x) N, the layer B being composed of Al y Ti (1-y) N, the layer A being composed of a domain region and a matrix region, the domain region being a region present as a plurality of portions dispersed in the matrix region along the layer A in a direction parallel to an interface of the layer A and the layer B, the matrix region being a region disposed to surround each of the plurality of portions constituting the domain region, the domain region having a composition ratio of Cr larger than that of Cr of the matrix region, wherein x has a range of 0.5≤x≤0.8 and y has a range of 0.5≤y≤0.7. 2. The cutting tool according to claim 1 , wherein the layer A has a thickness of 0.2 nm or more and 3 μm or less. 3. The cutting tool according to claim 1 , wherein the layer B has a thickness of 0.2 nm or more and 3 μm or less. 4. The cutting tool according to claim 1 , wherein the multilayer structure layer has a thickness of 0.5 μm or more and 30 μm or less.
Assignees
Inventors
Classifications
on hard metal substrates · CPC title
Coatings including alternating layers following a pattern, a periodic or defined repetition · CPC title
with layers graded in composition or physical properties · CPC title
including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides · CPC title
characterized by the composition of the alternating layers · CPC title
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- What does patent US11033969B2 cover?
- A cutting tool includes a substrate and a coating that coats a surface of the substrate, the coating including a multilayer structure layer composed of at least one layer A and at least one layer B alternately deposited from a side closer to the substrate toward a side closer to a surface, the layer A having an average composition of Al x Cr (1-x) N, the layer B being composed of Al y Ti (1-y) …
- Who is the assignee on this patent?
- Sumitomo Electric Hardmetal Corp
- What technology area does this patent fall under?
- Primary CPC classification C23C14/0641. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 15 2021 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).