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US4554201A
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Multilayer coatings of metal-cutting tools
Assignee: Vsesojuzny Nauchno-Issledovatelsky Institut Instrumenta
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Filing: 1984-05-01
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Granted: 1985-11-19
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Expires: 2004-05-01
Abstract
Abstract A multilayer coating of metal-cutting tools is composed of alternating layers of two components. One of these is a nitride or carbide of a metal of group IV. The other is a nitride, carbide, boride or silicide of a metal of group VI. The layer thickness of the group IV metal compound is from 0.05 to 0.5 μm, and the layer thickness of the group VI metal compound constitutes 15 to 40 percent of the layer thickness of the group IV metal compound. The multilayer coating is preferably intended for application to metal-cutting tools used for machining high-alloyed materials.
Inventors
- 👤 Anatoly A. Andreev
- 👤 Igor V. Gavrilko
- 👤 Alexei G. Gavrilov
- 👤 Anatoly S. Vereschaka
- 👤 Viktor P. Zhed
- 👤 Valentin G. Padalka
- 👤 Andrei K. Sinelschikov
- 👤 Vladimir T. Tolok
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:07
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/40; C23C28/42; C23C28/04; C23C28/044; C23C28/44; C23C30/00; C23C30/005; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
41 words
A multilayer coating of metal-cutting tools composed by alternating layers of two components, one being a nitride or carbide of a metal of group IV, and the other being a nitride, carbide, boride or silicide of a metal of group VI.
Claim 2
Dependent Claim
41 words
A multilayer coating of metal-cutting tools composed by alternating layers of two components, one being a nitride or carbide of a metal of group IV, and the other being a nitride, carbide, boride or silicide of a metal of group VI.
Claim 3
Dependent Claim
53 words
A multilayer coating of metal-cutting tools as claimed in claim 1, characterized in that the layer thickness of group IV metal compound is from 0.05 to 0.5 μm, and the layer thickness of group VI metal compound amounts to 15 to 40 percent of the layer thickness of the group IV metal compound.
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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) | 1988-11-18 | 1989-05-20 | 1989-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-18 | 1993-05-20 | 1993-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-18 | 1997-05-20 | 1997-11-19 | $7700.00 | Window Closed / Lapsed |