US5260141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond coated products
Assignee: University of Minnesota System
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Filing: 1991-11-29
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Granted: 1993-11-09
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Expires: 2011-11-29
Abstract
Abstract A method is provided for preparing a diamond coating on a substrate. The method includes a first step of applying a partial diamond coating having an effective amount of void area therein to the work surface of a substrate. In a follow-up step the void area in the partial coating is filled with binder, preferably metallic binder. In a later step, diamond projecting outwardly from the binder is further grown, to generate a covering portion or a head portion extending over, and in protective relationship with, the binder or binder material. According to the present invention preferred products are also provided.
Inventors
- 👤 Chung-hsien Tsai
- 👤 John C. Nelson
- 👤 Joachim V. R. Heberlein
- 👤 Emil Pfender
- 👤 William W. Gerberich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:53
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/02; C23C16/0272; C23C16/271; C23C16/276; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12535; Y10T428/12625; Y10T428/12771; Y10T428/12861; Y10T428/12937
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
92 words
A diamond coated product comprising: (a) a substrate having a work surface thereon; (b) a diamond coating positioned on said substrate work surface; said diamond coating comprising diamond crystal material having base portions in communication with said substrate; said diamond crystal material base portions having spaces therebetween; and, (c) binder material in said spaces between said diamond crystal material base portions; said binder material having an outer surface spaced from said substrate; (i) said diamond crystal material including a head portion extending in continuous covering relation over said binder material outer surface.
Claim 2
Dependent Claim
92 words
A diamond coated product comprising: (a) a substrate having a work surface thereon; (b) a diamond coating positioned on said substrate work surface; said diamond coating comprising diamond crystal material having base portions in communication with said substrate; said diamond crystal material base portions having spaces therebetween; and, (c) binder material in said spaces between said diamond crystal material base portions; said binder material having an outer surface spaced from said substrate; (i) said diamond crystal material including a head portion extending in continuous covering relation over said binder material outer surface.
Claim 3
Dependent Claim
12 words
A product according to claim 1 wherein said substrate comprises tool steel.
Claim 4
Dependent Claim
18 words
A product according to claim 1 wherein said binder material is between about 3 and 15 microns thick.
Claim 5
Dependent Claim
12 words
A product according to claim 1 wherein said binder material comprises nickel.
Claim 6
Dependent Claim
20 words
A product according to claim 1 wherein said diamond material head portion is between about 2 and 7 microns thick.
Claim 7
Dependent Claim
49 words
A product according to claim 1 wherein: (a) said substrate comprises tool steel; (b) said binder comprises nickel and occupies between about 5% and about 30% of the area of the substrate work surface; and, (c) said diamond material head portion is between about 2 and 7 microns thick.
Claim 8
Dependent Claim
88 words
A diamond coating prepared according to a method including the steps of: (a) applying a partial diamond coating to a work surface of a substrate and leaving an effective amount of void area on the work surface, not covered by diamond coating, for receipt of binder to secure the partial diamond coating; (b) covering the void area in the partial diamond coating with binder; and, (c) following the step of covering the void area with binder, growing a continuous diamond coating over the binder to cover the binder.
Claim 9
Dependent Claim
88 words
A diamond coating prepared according to a method including the steps of: (a) applying a partial diamond coating to a work surface of a substrate and leaving an effective amount of void area on the work surface, not covered by diamond coating, for receipt of binder to secure the partial diamond coating; (b) covering the void area in the partial diamond coating with binder; and, (c) following the step of covering the void area with binder, growing a continuous diamond coating over the binder to cover the binder.
Claim 10
Dependent Claim
209 words
A diamond coating prepared according to a method including the steps of: (a) applying a partial diamond coating, to a work surface of a substrate and leaving an effective amount of void area on the work surface, not covered by diamond coating, for receipt of binder to secure the partial diamond coating; (i) said step of applying a partial diamond coating comprising applying a coating having a first average thickness; and, (ii) said step of applying a partial diamond coating comprising chemical vapor deposition of diamond from a thermal plasma plume; (b) filling the void area on the work surface and the partial diamond coating with binder; (i) said step of filling the void area with binder comprising filling the void area with a binder depth of between about 10% and about 80% of the first average thickness; and, (ii) said step of filling void area with binder further comprising electrodeposition of metal binder in the void; and, (c) growing further diamond coating over the binder to form a continuous diamond coating over the binder; (i) said step of growing further diamond coating over the binder comprising a step of chemical vapor deposition of diamond from a thermal plasma plume, to expand diamond crystals in the partial diamond coating.
Claim 11
Dependent Claim
209 words
A diamond coating prepared according to a method including the steps of: (a) applying a partial diamond coating, to a work surface of a substrate and leaving an effective amount of void area on the work surface, not covered by diamond coating, for receipt of binder to secure the partial diamond coating; (i) said step of applying a partial diamond coating comprising applying a coating having a first average thickness; and, (ii) said step of applying a partial diamond coating comprising chemical vapor deposition of diamond from a thermal plasma plume; (b) filling the void area on the work surface and the partial diamond coating with binder; (i) said step of filling the void area with binder comprising filling the void area with a binder depth of between about 10% and about 80% of the first average thickness; and, (ii) said step of filling void area with binder further comprising electrodeposition of metal binder in the void; and, (c) growing further diamond coating over the binder to form a continuous diamond coating over the binder; (i) said step of growing further diamond coating over the binder comprising a step of chemical vapor deposition of diamond from a thermal plasma plume, to expand diamond crystals in the partial diamond coating.
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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) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |