Surface-coated cutting tool
US-2017312830-A1 · Nov 2, 2017 · US
Coated cutting tool
US12544837B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12544837-B2 |
| Application number | US-202017619315-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 17, 2020 |
| Priority date | Jun 19, 2019 |
| Publication date | Feb 10, 2026 |
| Grant date | Feb 10, 2026 |
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Abstract
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A coated cutting tool includes a substrate and a coating, wherein the coating has a (Ti,Al)N multilayer of alternating cubic Ti 1-x Al x N sub-layers, 0.60≤x≤0.75, and cubic+hexagonal Ti 1-y Al y N sub-layers, 0.60≤y≤0.75. The average cubic Ti 1-x Al x N sub-layer thickness is from 75 to 450 nm and the average cubic+hexagonal Ti 1-y Al y N sub-layer thickness is from 50 to 300 nm. The number of each of the cubic Ti 1-x Al x N sub-layers and cubic+hexagonal Ti 1-y Al y N sub-layers is from 2 to 50.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A coated cutting tool for metal machining comprising a substrate and a coating, wherein the coating includes a (Ti,Al) N multilayer of alternating cubic Ti 1-x Al x N sub-layers, 0.60≤x≤0.75, and cubic+hexagonal Ti 1-y Al y N sub-layers, 0.60≤y≤0.75, an average cubic Ti 1-x Al x N sub-layer thickness being from 75 to 450 nm and an average cubic+hexagonal Ti 1-y Al y N sub-layer thickness being from 70 to 300 nm, a number each of cubic Ti 1-x Al x N sub-layers and cubic+hexagonal Ti 1-y Al y N sub-layers being from 2 to 50. 2 . The coated cutting tool according to claim 1 , wherein the average cubic Ti 1-x Al x N sub-layer thickness is from 150 to 400 nm. 3 . The coated cutting tool according to claim 1 , wherein the average cubic+hexagonal Ti 1-y Al y N sub-layer thickness is from 70 to 250 nm. 4 . The coated cutting tool according to claim 1 , wherein a thickness ratio of the cubic Ti 1-x Al x N sub-layer to the cubic+hexagonal Ti 1-y Al y N sub-layer is from 5:1 to 1:1. 5 . The coated cutting tool according to claim 1 , wherein for the cubic Ti 1-x Al x N sub-layer, 0.64≤x≤0.70. 6 . The coated cutting tool according to claim 1 , wherein for the cubic+hexagonal Ti 1-y Al y N sub-layer, 0.64≤y≤0.70. 7 . The coated cutting tool according to claim 1 , wherein the number each of cubic Ti 1-x Al x N sub-layers and cubic+hexagonal Ti 1-y Al y N sub-layers is from 3 to 40. 8 . The coated cutting tool according to claim 1 , wherein the difference between x in the cubic Ti 1-x Al x N sub-layer and y in the cubic+hexagonal Ti 1-y Al y N sub-layer is less than 0.09. 9 . The coated cutting tool according to claim 1 , wherein x equals y. 10 . The coated cutting tool according to claim 1 , wherein a total thickness of the (Ti,Al) N multilayer is from 0.5 to 10 μm. 11 . The coated cutting tool according to claim 1 , wherein in 2theta XRD of a whole (Ti,Al) N multilayer I(0 0-1 0)/I(2 0 0), is from 0.05 to 0.75. 12 . The coated cutting tool according to claim 1 , wherein the cubic Ti 1-x Al x N sub-layer and the cubic+hexagonal Ti 1-y Al y N sub-layer are cathodic arc evaporation deposited layers.
Assignees
Inventors
Classifications
- C23C28/044Primary
coatings specially adapted for cutting tools or wear applications · CPC title
Electric arc evaporation · CPC title
on metallic substrates or on substrates of boron or silicon · CPC title
Nitrides (C23C14/0617 takes precedence) · CPC title
Titanium aluminium nitride · CPC title
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- What does patent US12544837B2 cover?
- A coated cutting tool includes a substrate and a coating, wherein the coating has a (Ti,Al)N multilayer of alternating cubic Ti 1-x Al x N sub-layers, 0.60≤x≤0.75, and cubic+hexagonal Ti 1-y Al y N sub-layers, 0.60≤y≤0.75. The average cubic Ti 1-x Al x N sub-layer thickness is from 75 to 450 nm and the average cubic+hexagonal Ti 1-y Al y N sub-layer thickness is from 50 to 300 nm. The number of…
- Who is the assignee on this patent?
- Sandvik Coromant Ab
- What technology area does this patent fall under?
- Primary CPC classification C23C28/044. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 10 2026 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).