US4734339A
Expired / Lapsed
US
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Body with superhard coating
Assignee: Santrade Ltd
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Filing: 1985-06-24
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Granted: 1988-03-29
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Expires: 2005-06-24
Abstract
Abstract The present invention relates to a compound body consisting of a substrate with a surface coating of one or more dense, finegrained diamond layers, where the diamond grains are directly bonded to each other. Extreme hardness makes the compound body suitable for wear parts- and tools applications. Very good heat conductivity and an extremely high electrical isolation resistance makes the compound body extremely useful to lead away heat in electronic components.
Inventors
- 👤 Herbert Schachner
- 👤 Heinz Tippmann
- 👤 Benno Lux
- 👤 Klas G. Stjernberg
- 👤 Anders G. Thelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/02; C23C16/0272; C23C16/0281; C23C30/00; C23C30/005
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
118 words
Compound body comprising a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of Group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
Claim 2
Dependent Claim
118 words
Compound body comprising a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of Group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
Claim 3
Dependent Claim
37 words
Compound body according to claim 1 characterized in that the core comprises an alloy with the main component a metal from group 1b to 7b and 8 in the periodic system, or any of these metals only.
Claim 4
Dependent Claim
18 words
Compound body according to claim 1 characterized in that the core comprises a noble metal, copper or aluminium.
Claim 5
Dependent Claim
44 words
Compound body according to claim 1 characterized in that the core comprises one or more hard phases of metal oxides, metal carbides, metal nitrides, metal borides or mixtures or solutions thereof, where the metal belongs to group 4b to 6b in the periodic system.
Claim 6
Dependent Claim
20 words
Compound body according to claim 4 characterized in that the core material contains a metal belonging to the iron group.
Claim 7
Dependent Claim
35 words
Compound body according to claim 1 characterized in that the core comprises at least one of the oxides of Al, Zr or Si or at least one of the nitrides of B, Si or Al.
Claim 8
Dependent Claim
14 words
Compound body according to claim 1 characterized in that the core consists of Si-Al-O-N.
Claim 9
Dependent Claim
16 words
Compound body according to claim 1 characterized in that the bonding layer is a noble metal.
Claim 10
Dependent Claim
21 words
Compound body according to claim 1 characterized in that the total thickness of the coating is between 0.1 and 500 μm.
Claim 11
Dependent Claim
18 words
Compound body of claim 9 wherein the total thickness of the coating is between 0.5 and 100 μm.
Claim 12
Dependent Claim
15 words
Compound body of claim 1 wherein the metal which forms a stable carbide is Ti.
Claim 13
Dependent Claim
136 words
In a drawing die having a drawing surface, the improvement which comprises using as the drawing surface a compound body comprising a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
Claim 14
Dependent Claim
136 words
In a drawing die having a drawing surface, the improvement which comprises using as the drawing surface a compound body comprising a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
Claim 15
Dependent Claim
147 words
In an electronic component including a portion requiring at least one of extremely good thermal conductivity and high electrical isolation, the improvement which comprises using as the portion a compound body comprsing a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
Claim 16
Dependent Claim
147 words
In an electronic component including a portion requiring at least one of extremely good thermal conductivity and high electrical isolation, the improvement which comprises using as the portion a compound body comprsing a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
Claim 17
Dependent Claim
136 words
In a cutting tool including a wear surface, the improvement which comprises using as the wear surface a compound body comprising a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
Claim 18
Dependent Claim
136 words
In a cutting tool including a wear surface, the improvement which comprises using as the wear surface a compound body comprising a core of a material taken from the group consisting of a metal, metal alloy, metal-bonded hard metal compound, ceramic or mixtures thereof, said core being at least partly covered with a layer of one or more CVD-deposited layers of polycrystalline diamond, each said CVD-deposited layer being from 0.1 to 10 μm thick and being bonded to the substrate by a layer of a material selected from the group consisting of a noble metal, a metal which forms a stable carbide and a compound with the formula Me(C x N y O z B t ) where Me is a metal of group 4b through 6b of the Periodic Table, Al or Si and 0.45<x+y+z+t<2.1.
References Cited (Backward Citations)
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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) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |