US5851680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron-doped titanium nitride coatings and coated parts
Assignee: Tecmachine SA
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Filing: 1997-01-27
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Granted: 1998-12-22
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Expires: 2017-01-27
Abstract
Abstract There is disclosed a titanium nitride doped with boron crystallizing with the same structure as titanium nitride TiN and having a Vickers microhardness greater than approximately 50 GPa. There is also disclosed an anti-wear coating comprising this titanium nitride doped with boron. There are also disclosed parts such as metal parts, tungsten carbide parts and cermet parts, for example, including a coating of this type.
Inventors
- 👤 Christophe Heau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:05
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C04; C04B; C04B41/00; C04B41/009; C01; C01B; C01B21/00; C01B21/06; C01B21/0602; C01B21/076; C04B41/45; C04B41/50; C04B41/5053; C04B41/5062; C04B41/5068; C04B41/80; C04B41/81; C04B41/85; C04B41/87; C23C14/0641; C23C16/00; C23C16/22; C23C16/30; C23C16/34; C01P; C01P2002/00; C01P2002/50; C01P2002/52; C01P2002/54; C01P2002/70; C01P2002/72
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
24 words
Titanium nitride doped with boron, crystallizing with the same structure as titanium nitride TiN, and having a Vickers microhardness greater than approximately 50 GPa.
Claim 2
Dependent Claim
24 words
Titanium nitride doped with boron, crystallizing with the same structure as titanium nitride TiN, and having a Vickers microhardness greater than approximately 50 GPa.
Claim 3
Dependent Claim
35 words
Titanium nitride doped with boron as claimed in claim 1 wherein the relative proportions of its three constituents (nitrogen, titanium and boron), expressed in atomic percentages, are as follows: 4%<B<28% 18%<N<34%, the remainder being titanium.
Claim 4
Dependent Claim
27 words
Titanium nitride doped with boron as claimed in claim 2 wherein the atomic percentages of its nitrogen, titanium and boron constituents are in proportions such that: ##EQU2##
Claim 5
Dependent Claim
15 words
Titanium nitride doped with boron as claimed in claim 1 including a single metallurgical phase.
Claim 6
Dependent Claim
15 words
A coating as claimed in claim 1 having a thickness greater than approximately 1 μm.
Claim 7
Dependent Claim
18 words
An anti-wear coating comprising a compound as claimed in any one of claims 1 to 4 or 5.
Claim 8
Dependent Claim
33 words
A part having a coating of titanium nitride doped with boron, the doped nitride crystallizing with the same structure as titanium nitride TiN, and having a Vickers microhardness greater than approximately 50 GPa.
Claim 9
Dependent Claim
33 words
A part having a coating of titanium nitride doped with boron, the doped nitride crystallizing with the same structure as titanium nitride TiN, and having a Vickers microhardness greater than approximately 50 GPa.
Claim 10
Dependent Claim
21 words
A part as claimed in claim 7 selected from the group consisting of metal parts, tungsten carbide parts and cermet parts.
Claim 11
Independent Claim
51 words
A method for protecting a part from wear which comprises subjecting the part to a vacuum and depositing on such part in the vacuum titanium nitride doped with boron, the doped nitride crystallizing with the same structure as titanium nitride TiN, and having a Vickers microhardness greater than approximately 50 GPa.
Claim 12
Independent Claim
51 words
A method for protecting a part from wear which comprises subjecting the part to a vacuum and depositing on such part in the vacuum titanium nitride doped with boron, the doped nitride crystallizing with the same structure as titanium nitride TiN, and having a Vickers microhardness greater than approximately 50 GPa.
Claim 13
Dependent Claim
14 words
The method claimed in claim 9 wherein said vacuum deposition is by cathode sputtering.
Claim 14
Dependent Claim
22 words
The method claimed in claim 9 including the step of vaporizing a titanium-boron compound is vaporized in a rarefied atmosphere containing nitrogen.
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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) | 2001-12-21 | 2002-06-22 | 2002-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-21 | 2006-06-22 | 2006-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-21 | 2010-06-22 | 2010-12-22 | $7700.00 | Window Closed / Lapsed |