US5318840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear resistant coating films and their coated articles
Assignee: Mitsubishi Materials Corp
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Filing: 1993-01-27
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Granted: 1994-06-07
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Expires: 2013-01-27
Abstract
Abstract Disclosed is a wear resistant boronitride film layer having a chemical composition of (Al x Ti 1-x )(B y N 1-y ), where 0.05<x<0.75, and 0.02<y<0.12. The film layer is coated on the surface of a substrate to a thickness of 0.5 to 8 μm. With this construction, it is possible to obtain films superior in wear resistance to (Al x Ti 1-x )N films. Further, the substrates coated with the films include a WC based super hard alloy, TiCN-based cermet, and a ceramic.
Inventors
- 👤 Tsutomu Ikeda
- 👤 Toshiki Satoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:15
CPC Classifications
C; C23; C23C; C23C30/00; C23C30/005; C23C14/00; C23C14/06; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
52 words
A wear resistant coating film layer having high hardness, which is formed directly on the surface of a substrate, said film comprising a boronitride having the following chemical composition: (Al.sub.x Ti.sub.1-x)(B.sub.y N.sub.1-y) where 0.05≦x≦0.75 0.02≦y≦0.12 wherein the thickness of said film layer is within the range of from 0.5 to 8 μm.
Claim 2
Dependent Claim
52 words
A wear resistant coating film layer having high hardness, which is formed directly on the surface of a substrate, said film comprising a boronitride having the following chemical composition: (Al.sub.x Ti.sub.1-x)(B.sub.y N.sub.1-y) where 0.05≦x≦0.75 0.02≦y≦0.12 wherein the thickness of said film layer is within the range of from 0.5 to 8 μm.
Claim 3
Dependent Claim
33 words
A wear resistant film coated cutting tool comprising a WC-based super hard alloy, TiCN-based cermet or ceramic as substrate, the surface of which is coated with said hard film layer of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |